K Service Source Power Macintosh/Server G3 Minitower
K Service Source Hot Issues Power Macintosh/Server G3 Minitower
Hot Issues Introduction - 1 Introduction This chapter is designed to highlight unique or highpriority product issues that you should be aware of before servicing the Power Macintosh G3 Minitower or Macintosh Server G3 computers. This chapter alerts you to important issues and provides links to other areas in the manual where more complete information can be found. This chapter is not intended to replace other parts of this manual; it merely provides a pointer to pertinent information in those chapters.
Hot Issues Shared Logic Board - 2 Shared Logic Board The Power Macintosh G3 Desktop, G3 Minitower, and Macintosh Server G3 computers use the same logic board, but there are jumper settings that differ between them (see “Jumper Location J28” and “Jumper Location J16” in the Troubleshooting chapter). Processor Module Vs.
Hot Issues Power Supply Jumper - 3 Power Supply Jumper The Power Macintosh/Server G3 Minitower logic board has a power supply jumper installed at J28. The setting of this jumper differs between the Power Mac G3 Desktop and Power Mac/Server G3 Minitower models. Failure to install this jumper in the correct position may result in a computer that won’t boot up. (See “Jumper Location J28” in the Troubleshooting chapter.
Hot Issues Warranty Sticker - 4 Troubleshooting chapter.) Warranty Sticker There is a warranty sticker that covers the processor module jumper. The customer’s warranty is void if this sticker is tampered with. Service Providers must replace this sticker if they have removed it during servicing to protect the customer’s warranty. (See “Processor Module” in the Take-Apart chapter.) Power Supply Voltage Setting There is a switch on the back of the power supply that controls the voltage setting.
Hot Issues Voltage Regulator - 5 Switch” in the Basics chapter for more information, including an international voltage chart.) Voltage Regulator There is a removable voltage regulator on the logic board, which comes with the logic board and can also be ordered as a separate module. (See “Voltage Regulator” in the Troubleshooting chapter.
Hot Issues ROM DIMM - 6 ROM DIMM The Power Mac/Server G3 Minitower logic board uses a ROM DIMM as opposed to soldered ROM. You should not remove the ROM DIMM from the logic board. (See “Logic Board” in the Take-Apart chapter for instructions on how to prepare the logic board for return to Apple Computer.) SDRAM DIMMs The Power Mac/Server G3 Minitower uses SDRAM DIMMs.
Hot Issues SGRAM Video Memory - 7 SGRAM Video Memory Power Mac/Server G3 computers use SGRAM video memory. Use only SGRAM SO-DIMMs in these machines. Never install the 256K or 512K video memory DIMMs used in older Macintosh computers. (See “SGRAM Video Memory” in the Basics chapter.) EIDE Bus Issue If you have only one device connected to the EIDE bus, the device must be plugged into the first EIDE connector on the logic board (the one closer to the rear panel), which is marked J9.
Hot Issues Master/Slave Support - 8 Master/Slave Support Some Power Mac/Server G3 computers support adding two ATA/IDE devices to the same ATA/IDE channel, or what is commonly known as master and slave. This configuration provides user with the ability to add additional hard drives or removal media devices to their system. Because the cabling is different, you cannot replace ATA drives with SCSI drives and vice versa. (See “Support for Master and Slave” in the Basics chapter.
Hot Issues DVD-ROM Disk Damage - 9 the Take-Apart chapter.) DVD-ROM Disk Damage The Power Macintosh G3 Minitower and Macintosh Server G3 offer DVD-ROM drives as a build-to-order option. It is important to note that DVD disks are much more prone to damage than CD-ROM disks. Any type of scratch or other abuse may result in a disk that is unreadable. (See “DVDROM Drive Technology” in the Basics chapter.
Hot Issues HFS+ Formatted Drives - 10 HFS+ Formatted Drives Hard drives that ship with the Version 2 Power Macintosh G3 logic board (part number 661-2063) use a file format called Mac OS Extended format, also referred to as HFS+. Norton Utilities version 3.5 is not compatible with Mac OS and version 3.5.1 and earlier can result in hard drive corruption and loss of all data on the hard drive.
Hot Issues PM G3 Minitower "Sleep/Beep" Issue - 11 PM G3 Minitower "Sleep/Beep" Issue A problem has been reported with some of the AV I/O cards installed in the Power Macintosh G3 Minitower computer. Systems with the problem exhibit the following symptoms: The computer goes into sleep mode and begins beeping about 2 times a second. Then one of three things happens: 1 The computer wakes itself up after 3 to 4 seconds. 3 The user is unable to wake the computer.
Hot Issues PM G3 Minitower "Sleep/Beep" Issue - 12 To resolve this issue, replace the AV I/O card (p/n 6611456) only if the customer's system meets both of the following criteria: • The computer has a serial number date range of xxx42xxxxxx-xxx47xxxxxx; and • The AV I/O card has not been repaired already (see "Identifying Repaired Cards" below).
Hot Issues Power-On Issue - 13 Power-On Issue If you experience a power-on issue with the Power Macintosh G3 Minitower or Macintosh Server G3 where the power supply fan is spinning, but there is no boot tone, no hard drive noise, no power LED, and no video, you may have an improperly installed or faulty voltage regulator. You should always reseat and/or replace the voltage regulator before replacing the logic board. (See “System” symptom/ cures in the Troubleshooting chapter.
K Service Source Basics Power Mac/Server G3 Minitower
Basics Overview - 1 Overview The Power Macintosh/ Server G3 Minitower chassis design allows you to access the logic board and its components without having to remove the power supply or any drives. This flexible design makes this computer easy to service and upgrade. The Power Mac/Server G3 Minitower has a unique PERCH slot that accepts an I/O card that determines the audio and video capabilities of the computer.
Basics Features - 2 Features There are standard features available with every Power Macintosh G3 Minitower computer as well as build-toorder features that are optional. The standard and optional features are listed below: Standard Power Mac G3 Minitower Features: • 233 MHz, 266 MHz, or 300 MHz PowerPC G3 microprocessor • RAM expandable to 384 MB in three DIMM card slots using 64-bit, 168-pin, JEDEC-standard, 3.
Basics Features - 3 • 4 GB or 6 GB ATA hard drive • CD-ROM ATAPI drive at 24X speed (unless customer orders DVD-ROM drive) • 1.4 MB SuperDrive • Three expansion bays for adding internal 3.
Basics Features - 4 Optional Build-to-Order Power Mac G3 Minitower Features: • 100 MB SCSI Iomega or ATAPI Zip drive in the expansion bay • Ultra Wide SCSI PCI card • 4 GB or 9 GB Ultra Wide 3.
Basics Features - 5 • • • • • • • • • • • • • • backside L2 cache (300 MHz) on processor module Built-in 2D and 3D hardware graphics acceleration PERCH slot to support Apple I/O cards One modem slot on I/O cards for optional fax/modem card 4 GB or 9 GB Ultra Wide 3.5” SCSI hard drive(s) Ultra Wide SCSI PCI card 10/100 BaseT ethernet card Three expansion bays for adding internal 3.
Basics Features - 6 • • • • in standard Server G3 configuration with 10/100 BaseT ethernet card and Ultra Wide SCSI PCI card; one to two slots filled only in build-to-order G3 Minitower configurations with 10/100 BaseT ethernet card and/or Ultra Wide SCSI PCI card) Voltage switch Fan speed thermally controlled Energy Saver control panel 2 MB video RAM expandable to 4 MB or 6 MB with 3.
Basics Features - 7 Software included with Macintosh Server G3 Units: • Mac OS 8.1, specifically tuned for server use • AppleShare IP 5.0 server software • Apple Network Administrator Toolkit network management software • SoftRAID volume management software • Virex 5.
Basics Data Buses - 8 Data Buses The data buses on the Power Macintosh G3 Minitower and Macintosh Server G3 include: • Narrow SCSI-1: The SCSI-1 chain transfers data at up to 5 MB per second. The narrow SCSI-1 chain supports up to seven internal and external SCSI devices. The Narrow SCSI-1 bus is used to connect the ZIP drive (if present) and any SCSI-1 hard drives.
Basics Data Buses - 9 connectors, and if an ATA hard drive is installed, it uses the second connector). In the standard G3 Minitower configuration, both channels are in use. In the standard G3 Server configuration, one EIDE channel is available. Note: Some Power Mac G3 system use a Master/Slave interface. See “Support for Master and Slave” later in this section for more information.
Basics Data Buses - 10 Table 1: Internal Buses on G3 Server and Minitower Interface Connector Type Notes Max # of Drives Max Data Transfer Rate SCSI-31 (Ultra Wide) 68-Pin Requires Ultra Wide SCSI PCI card. 32 EIDE 40-Pin There are two EIDE connectors on the logic board. 23 SCSI-24 (Fast) 50-Pin Requires Ultra Wide SCSI PCI card. 7 10 MB per second SCSI-1 (Narrow) 50-Pin Standard connector on logic board. Used to connect internal devices to Narrow SCSI-1 bus (e.g. ZIP drive).
Basics Data Buses - 11 Notes for Table 1: 1 The Ultra Wide SCSI PCI card is optional on G3 Minitower and standard on G3 Server. The Apple Ultra Wide SCSI card and cable allow you to connect a maximum of 3 devices to this bus. 2 Physical space inside the computer limits this number to 3. 3 The ATAPI CD-ROM drive, ATAPI DVD-ROM drive, and ATA hard drive (if present) use this bus. 4 Ultra Wide SCSI PCI card is optional on G3 Minitower and standard on G3 Server.
Basics Data Buses - 12 Narrow SCSI-1 Bus All internal and external devices on the SCSI-1 chain must have unique ID numbers. SCSI ID numbers 0 through 6 are available. Always terminate the last internal and the last external SCSI-1 device, as shown in the following graphic. If you connect only internal devices or only external devices, the computer will automatically terminate one end of the chain. Terminate the last external SCSI device.
Basics Data Buses - 13 Ultra Wide SCSI-3 Bus Ultra Wide SCSI support is offered on the Power Macintosh G3 Minitower (optional feature) and G3 Server (standard feature) via an Ultra Wide SCSI PCI card (p/n 661-2011). If present, this card is installed in the first PCI slot on the logic board. You can connect a total of three internal devices to the Ultra Wide SCSI-3 bus.
Basics Data Buses - 14 If present, the Ultra Wide internal hard drive (SCSI ID 0) is connected to the Ultra Wide SCSI-3 bus. Floppy drive CD-ROM drive You can install Ultra Wide SCSI devices in these expansion bays.
Basics Data Buses - 15 All devices on the same SCSI bus must have unique ID numbers, but devices on different SCSI buses may use the same SCSI ID number. (For example, you could have a removable media drive with ID number 3 connected to the Narrow SCSI-1 bus and a hard drive with ID number 3 connected to the Ultra Wide SCSI-3 bus.) Some of the drives that were installed at the factory, as well as the SCSI card itself, have already reserved certain SCSI ID numbers on the Ultra Wide SCSI-3 bus.
Basics Data Buses - 16 Table 2: Assigning Ultra Wide SCSI ID Numbers Ultra Wide SCSI ID # Device 0 Factory-installed hard drive (terminated) 1 Factory-installed hard drive (optional) 2—6 Available (but not recommended) 7 8 —15 SCSI PCI card (terminated) Available Important: The factory-installed internal hard drive and the SCSI card are both terminated. Other SCSI devices you install and connect to the internal Ultra Wide SCSI-3 bus must not be terminated, or the computer will malfunction.
Basics Data Buses - 17 EIDE Bus The internal EIDE bus supports the internal CD-ROM or DVD-ROM drive. You can connect another EIDE device, such as an EIDE hard drive, to the second channel of the EIDE bus. (Note that in the standard G3 Minitower configuration, there is already an ATA hard drive attached to the second EIDE channel. Some build-to-order G3 Minitowers, however, come with the optional Ultra Wide SCSI card and Ultra Wide SCSI hard drive, in which case the second EIDE channel is available.
Basics Data Buses - 18 devices to the EIDE bus. If you are connecting a single device to the EIDE bus, you should use the J9 connector (the one closer to the rear panel). If you plug a single device into the J10 EIDE connector and leave J9 empty, the device may not boot. If the Power Macintosh G3 Minitower ships with two EIDE devices (a CD-ROM or DVD-ROM drive and an ATA hard drive), both EIDE connectors (J9 and J10) will be automatically used. Service Providers should keep the J9 vs.
Basics Data Buses - 19 provides user with the ability to add additional hard drives or removal media devices to their system. The Power Macintosh G3 Minitower and Macintosh Server G3 units that support this feature can only be identified by looking at the logic board itself and verifying the revision of the built-in video ASIC made by ATI Technologies.
Basics Data Buses - 20 Configuring or Connecting Master/Slave Devices Each IDE channel can support either one or two devices. All Power Macintosh G3's have two ATA/IDe channels. ATA/IDE devices each contain their own integrated controllers, and so in order to maintain order on the channel, it is necessary to have some way of differentiating between the two devices.
Basics Data Buses - 21 Devices are designated as master or slave using jumpers, small connectors that fit over pairs of pins to program the drive through hardware. Each hard drive manufacturer uses a different combination of jumpers (usually named differently) for specifying whether its drive is master or slave on the channel.
Basics Data Buses - 22 drives the master, or both the slave will likely result in a very confused system. Note: It makes no difference which connector on the ATA/ IDE cable is used in a standard ATA/IDE setup, because it is the jumpers that control master and slave, not the cable. As long as one device is jumpered as master and the other as slave, any two ATA/IDE or ATAPI devices should work together on a single channel.
Basics Expansion Bays - 23 Expansion Bays It is important to remember that customers may upgrade their drives or have different types of drives installed in the drive bays. You can replace the hard drive with a 3.5-inch hard drive (1-inch high). You can replace the floppy drive with a 5.25-inch or smaller device (maximum 1 inch high). The CD-ROM drive, Zip drive (Power Mac G3 only), and lower expansion bays accept a 5.25-inch or smaller device (maximum 1.625 inches high).
Basics Expansion Bays - 24 Internal hard drive Floppy drive CD-ROM drive This expansion bay accepts a 5.25" (or smaller) EIDE or SCSI device (1.625" high or shorter). Some models come with a Zip drive already installed here. This expansion bay accepts a 5.25" (or smaller) EIDE or SCSI device (1.625" high or shorter).
Basics Ultra Wide SCSI Card - 25 Ultra Wide SCSI Card Ultra Wide SCSI support is offered on the Power Macintosh G3 Minitower (optional feature) and G3 Server (standard feature) via an Ultra Wide SCSI PCI card (p/n 661-2011). If present, this card is installed in the first PCI slot on the logic board. Connecting Additional Internal Devices If you add an internal drive to the Ultra Wide SCSI bus, you need to assign it a SCSI ID number in the 8 to 15 range.
Basics Ultra Wide SCSI Card - 26 Ultra Wide SCSI devices to the computer, you must install a second Ultra Wide SCSI card. To install a second Ultra Wide SCSI card, follow these guidelines: • Use a single-channel card if possible. • If you need to add a dual-channel Ultra Wide SCSI card, contact the PCI card vendor to verify compatibility with the Power Macintosh G3 Minitower and Macintosh Server G3.
Basics Ultra Wide SCSI Card - 27 • • • • • • • • • • • • Advanced Data Streaming Technology (ADS) RAID Ready Embedded RISC I/P processor Ultra SCSI connector: Fine pitch 68-pin “P” Flash ROM BIOS PCI 2.1 compliant Large command FIFO Supports disconnect/reconnect Asynchronous I/O support Multiple initiator support SCSI-3 tagged command queuing SCSI Manager 4.
Basics Ultra Wide SCSI Card - 28 40 MB/sec. per channel; asynchronous data rate— 12 MB/sec. • SCSI interface: SCSI-1, SCSI-2, SCSI-3, Ultra SCSI • Electrical signals: Single-ended versions • Extensive device support: Up to 105 Through Logical Unit Numbers (LUN’s) (Wide and Narrow devices) Cable Length Limits When using Ultra SCSI single-ended devices, you can connect up to 8 devices if the total cable length is no longer than 1.5 meters (about 4.5 feet). If total cable length is between 1.5 meters and 3.
Basics Ultra Wide SCSI Card - 29 approximately 18 feet (this is a combined figure of both internal and external cable lengths). You should keep cable lengths as short as possible to ensure high signal quality and performance. If you connect a combination of Wide 16-bit devices and Narrow 8-bit devices on the same connector (not recommended), Wide devices must be connected first (closest to the connector), followed by the Narrow devices.
Basics 10/100 BaseT Ethernet Card - 30 10/100 BaseT Ethernet Card The specifications for the 10/100 BaseT ethernet card, which is an optional feature in the G3 Minitower and standard in the Server G3, are as follows: • Open Transport: Mac OS 8.1 or later, AppleShare, AppleTalk, NetWare for Macintosh, TCP-IP • Connector: RJ-45 (for 10BaseT and 100BaseT) • Media, 10BaseT: Cat 3, 4, or 5 UTP on 2 pairs up to 100M • Media, 100BaseT: Cat 5 UTP on 2 pairs up to 100M • Bus interface: PCI revision 2.0 and 2.
Basics 10/100 BaseT Ethernet Card - 31 • Controllers: DECchip 21140, 32-bit internal processor per channel
Basics DVD-ROM Drive Technology - 32 DVD-ROM Drive Technology DVD stands for Digital Versatile Disc, an audio/video/data standard based on high-density next-generation optical discs. Apple Computer offers a DVD-ROM drive through the build-to-order (BTO) program which is capable of playing DVD-ROM disks. Warning: DVD disks are much more prone to damage than CD-ROM disks. Any type of scratch or other abuse may result in a disk that is unreadable.
Basics DVD-ROM Drive Technology - 33 DVD discs can hold nearly 26 times the amount of data that can be stored on a conventional CD. This capacity virtually eliminates the need to swap discs in the middle of a game or application and at the same time reduces the cost and the number of discs necessary to hold the data. The following table clearly illustrates the difference between CD and DVD storage possibilities.
Basics DVD-ROM Drive Technology - 34 Table 3: Storage Capacities Disc Type Diameter Sides & Layers Capacity Playback Time (video) CD-ROM 120mm SS 650 MB Max 74 min audio DVD-5 120mm SS/SL 4.7 GB Over 2 hours of video DVD-9 120mm SS/DL 8.5 GB Approx. 4 hours DVD-10 120mm DS/SL 9.4 GB Approx. 4.
Basics DVD-ROM Drive Technology - 35 To squeeze all this information onto the CD-sized disc, DVD disc designers: 1)made track spacing and the pits and lands used to record data nearly half the size of the original CD design; 2) made the discs double sided and added another data layer to each side creating a potential for four layers of data per disc. The figure below illustrates the layers of a DVD disc.
Basics DVD-ROM Drive Technology - 36 DVD Layers
Basics DVD-ROM Drive Technology - 37 Compared to CD, DVD uses smaller pits and a more closely spaced track.The result is a significant increase in data density. The higher Numerical Aperture (NA) lens of DVD helps the laser focus on the smaller pits. Like CD, DVD is 120 mm (4-3/4 inches) in diameter. Like CD, DVD is 1.2 mm thick composed of (2) 0.6 mm substrates bonded together. The new DVD Players will be able to play existing music CDs.
Basics DVD-ROM Drive Technology - 38 Table 4: CD vs. DVD Comparison CD DVD Disc Diameter 120mm 120mm Disc Thickness 1.2mm 1.2mm Disc Structure Single substrate Two bonded 0.6mm substrates Laser Wavelength 780nm (infrared) 650 and 635nm (red) Numerical Aperature 0.45 0.60 Track Pitch 1.6um 0.74um Shortest Pit/Land Length 0.83um 0.
Basics DVD-ROM Drive Technology - 39 Table 4: CD vs. DVD Comparison CD DVD Data Layers 1 1 or 2 Data Capacity Approx. 680 MB Single Layer: 4.7 GBx2 Dual Layer: 8.5 GBx2 Data Transfer Rate Mode 1: 153.6 KB/sec Mode 2: 176.
Basics DVD-ROM Drive Technology - 40 Apple DVD-ROM Drive Specs The Apple DVD-ROM Drive is an ATAPI drive. It uses an IDE port on the Macintosh for connection to the computer. Below are some of the specs for the drive. Note that the above transfer rate info varies from the data below. The numbers above reflect the DVD specification where the below numbers are for the drive that Apple is shipping.
Basics DVD-ROM Drive Technology - 41 Transfer Rate DVD: 2,705 KB/second CD Mode 1: 1,293 to 3,000 KB/second CD Mode 2: 1,474 to 3,429 KB/second Disk Format Support DVD 9660 Bridge (DVD-ROM Book, DVD-Video Book) RedBook, Yellow-Book, CD-ROM XA, DA-I Bridge, Photo-CD, Video CD, CD-I Ready, CD-G, Multi-session (Photo-CD, CD Extra) Note: To be able to play the DVD-Video disks, you must have an additional PCI decoder card installed that will allow the playback of movie disks.
Basics DVD-ROM Drive Technology - 42 you will need to purchase a PCI decoder card. DVD Software Drivers Apple DVD-ROM UDF Volume Access These two extensions will allow a DVD disk to be mounted on the desktop. DVD disks use a format called universal disk format (UDF) to store data on the disks. All DVD disks are formatted UDF; this includes DVD-VIDEO and DVD-ROM disks.
Basics DVD-ROM Drive Technology - 43 File Management System Micro UDF & ISO9660 Universal Disk Format (UDF) is a file system standard that supports both rewritable and write-once media. It is a cross-platform data format that allows transparent interchange of data via optical discs or CD-ROMs. UDF also defines methods for reading, writing and other operations. Discs that are read on a Mac OS-based computer may also be read on a DOS, UNIX or Windows based computer.
Basics DVD-ROM Drive Technology - 44 supported either software or hardware updates to allow the drive to be upgraded so that it could write UDF. The first generation of DVD drives could not read CD-R media and in some cases actually damaged the media. UDF Features • Enables operating system independent interchange on optical media. • Designed to support the massive capacities of optical jukeboxes. • Only ISO standard file system for WORM media (Write Once Read Many).
Basics DVD-ROM Drive Technology - 45 Stand-alone players use UDF while computer applications use the UDF bridge format, which consists of both ISO-9660 CD-ROM format and UDF.
Basics FireWire Technology - 46 FireWire Technology This section explains what FireWire technology is and gives specific information on Apple Computer’s FireWire card, which ships as an optional build-to-order module on the Power Macintosh G3 Minitower. FireWire Defined FireWire technology refers to Apple Computer’s crossplatform implementation of the high-speed serial data bus (defined by IEEE Standard 1394-1995) that can move large amounts of data between computers and peripheral devices.
Basics FireWire Technology - 47 • A physically small thin serial cable - replaces today's bulky and expensive interfaces • Easy to use - no need for terminators, device IDs, screws, or complicated set-ups • Hot pluggable - devices can be added and removed while the bus is active • Scalable - the Standard defines 100, 200, and 400 Mbps devices and can support the multiple speeds on a single bus • Flexible - the Standard supports freeform daisy chaining and branching for peer-to-peer implementations • Fast,
Basics FireWire Technology - 48 FireWire technology speeds up the movement of multimedia data and large files and enables the connection of digital consumer products -- including digital camcorders, digital video tapes, digital video disks, set-top boxes, and music systems -- directly to a personal computer. Devices can be connected in any combination of branching and chaining, as long as no loops are formed. A FireWire bus can support up to 16 consecutive cable hops of 4.5 meters each.
Basics FireWire Technology - 49 Isochronous data transfer provides guaranteed data transport at a pre-determined rate. This is especially important for multimedia applications where uninterrupted transport of time-critical data and just-in-time delivery reduce the need for costly buffering. This leads to perhaps one of the most important uses of FireWire as the digital interface for consumer electronics and AV peripherals. FireWire is a peer-to-peer interface.
Basics FireWire Technology - 50 buffers to capture digital video. FireWire will gradually improve upon existing interfaces such as SCSI. FireWire provides higher speed, lower cost, and is more user friendly than most existing interfaces. SCSI products such as scanners, CDROMs, disk drives, and printers are already evaluating when they will move to FireWire. FireWire has the bandwidth capacity to replace and consolidate most other peripheral connection communication methods in use today.
Basics FireWire Technology - 51 card is Apple Computer’s first implementation of FireWire technology. This card is designed to work with digital video camcorders and decks that use the DV format and have a FireWire port (sometimes marked IEEE 1394 or DV IN/ OUT). The FireWire DVC hardware and software, together with a non-linear editing application, allow the user to capture DV movie clips to their hard disk. They can view the clips in MoviePlayer or other QuickTime 3.
Basics FireWire Technology - 52 200 Mbps and supports a single digital video camera. The external FireWire cable, which ships with the card, connects any one of the 6-pin, external connectors on the card to a 4-pin connector on the digital video camera. The Apple FireWire Card is designed to keep the network alive even if the Macintosh is shut down. Loss of power to the Macintosh will not affect the operation of a FireWire card as long as it can draw power from other cards on the bus.
Basics FireWire Technology - 53 Connecting the FireWire DVC Card The 6-pin connector on the external FireWire cable plugs into the card and the 4-pin connector plugs into the camera’s DV port. Both connectors snap into place when properly engaged. A third-party cable is required in order to connect two computers together (or if the camera has a 6pin FireWire port).
Basics FireWire Technology - 54 Installing the FireWire Card Software To install the Apple FireWire Card software: 1 Insert the FireWire CD. 3 Follow the on-screen instructions. 2 4 Double-click the Installer icon. Restart the computer. Important: An extension called FireWire Support may be located in a folder titled FireWire in the Apple Extras folder on the Macintosh.
Basics The DDS-3 Tape Drive - 55 The DDS-3 Tape Drive The Power Macintosh G3 Minitower and Macintosh Server G3 offer a DDS-3 tape drive as a build-to-order option. This internal DDS-3 tape backup drive and accompanying software can perform full or partial backup and restore procedures for all of the data on the computer’s hard drives. In addition, the tape drive automatically performs error correction and data compression of the files that are backed up and restored.
Basics The DDS-3 Tape Drive - 56 Storage (DDS) computer-grade tape, part number DGD 125P, with 12 GB capacity (125 meters/410 feet). Once you insert a tape, it takes about 24 seconds for it to load. When you eject a tape, it takes about 20 seconds for it to unload. The DDS-3 tape drive comes with a cleaning cassette that customers should use to clean the tape-drive heads. The intervals at which the tape drive should be cleaned depends on how often it is used.
Basics The DDS-3 Tape Drive - 57 cleaning process is completed, the drive automatically ejects the cassette. Customers are advised to keep a record of how many times they use the cleaning cassette. After 25 uses, it should be replaced. (For best results, use Sony part number DG5CL/2.) Status Lights Underneath the tape drive opening are three lights that inform you of the status of tape operations. The lights are labeled (left to right) Busy, Tape, and Status.
Basics The DDS-3 Tape Drive - 58 Table 5: Status Lights Light Behavior Busy Tape Status Off Not busy Not loaded Steady on SCSI active Loaded Tape is write-protected Flash 11 Drive active Loading/unloading Cleaning tape inserted Warning-tape has high number of errors Cleaning needed Flash 22 Flash 33 Waiting for tape to reset Flash 44 (See footnotes on following page.
Basics The DDS-3 Tape Drive - 59 1 Flash 1 - the light flashes .25 seconds on, .25 seconds off. 2 Flash 2 - the light flashes 3.5 seconds on, .5 seconds off. 3 Flash 3 - the light flashes .25 seconds on, one second off. 4 Flash 4 - the light flashes twice every 1.25 seconds.
Basics The DDS-3 Tape Drive - 60 Operating Environment The tape drive will not operate properly in high humidity. Be sure to adhere to the environmental requirements for the server described in the technical information that came with the computer. In addition, follow the recommendations for use that came with the tape cassette. Follow these guidelines to avoid temperature problems: – Avoid exposing cassettes to extreme heat or cold. For example, don’t store a cassette in a car in bright sunlight.
Basics The Cuda Chip - 61 The Cuda Chip The Cuda is a microcontroller chip. Its function is to • Turn system power on and off • Manage system resets from various commands • Maintain parameter RAM (PRAM) • Manage the Apple Desktop Bus (ADB) • Manage the real-time clock Many system problems can be resolved by resetting the Cuda chip (see Symptom Charts for examples). Press the Cuda reset button on the logic board to reset the Cuda chip.
Basics Resetting the Logic Board - 62 Resetting the Logic Board Resetting the logic board can resolve many system problems (refer to “Symptom Charts” for examples). Whenever you have a unit that fails to power up, you should follow this procedure before replacing any modules. 1 Unplug the computer. 3 Disconnect the power supply cable from the logic board and then press the Power On button. (See “Logic Board Diagram” later in this chapter to locate the Power On button.
Basics Resetting the Logic Board - 63 6 Reassemble the computer and test the unit. Note: This procedure resets the computer’s PRAM. Be sure to check the computer’s time/date and other system parameter settings afterwards.
Basics Sound - 64 Sound The sound system for the Power Macintosh/Server G3 computers is implemented entirely on the I/O cards (there are two versions available for the Power Macintosh G3 and one available for the Macintosh Server G3). The I/O cards support 16-bit stereo sound output and input, available simultaneously.
Basics Sound - 65 The Power Macintosh G3 also records sound from several sources: • A microphone connected to the line-level sound input jack • The sound-in ports on the video input module • Analog sound from optional communications cards • A compact disc in the CD-ROM player • Analog sound from the cross-platform card in a PCI slot With each sound input source, sound playthrough can be enabled or disabled.
Basics Sound - 66 Sound Output All sound output features for the Power Macintosh/Server G3 computer are provided by an I/O card. The Audio I/O card provides one mini jack for sound output on the back of the enclosure. The AV I/O card (not available for the Macintosh Server G3) provides three sound output connectors—two RCA jacks for right and left sound out, and one 1/8-inch mini jack for a stereophonic phone plug. The output jacks are connected to the sound amplifier.
Basics Sound - 67 Sound Input The I/O cards provide a stereo sound input jack on the back of the enclosure for connecting an external Apple PlainTalk line-level microphone (not standard equipment on the Macintosh Server G3) or other sound source pair of linelevel signals. The sound input jack accepts a standard 1/8inch stereophonic phone plug (two signals plus ground). Note: The microphone for the Macintosh LC and LC II does not work with the I/O cards.
Basics Sound - 68 • Sound playback—computer-generated sound is sent to the speaker and the sound output jacks. • Sound playback with playthrough—computer sound and sound input are mixed and sent to the speakers and sound output jacks. • Sound record with playthrough—input sound is recorded and also sent to the speakers and sound output jacks.
Basics Video Input and Output - 69 Video Input and Output The AV I/O card (not available for the Macintosh Server G3) supports video input and output of composite and S-video signals. The card supports input and output of NTSC, PAL, and SECAM video formats. The AV I/O card accepts video from an external source and displays it in a window on the computer’s display.
Basics Video Input and Output - 70 The card can accept video input from an external device, such as a VCR or camcorder.
Basics Running a G3 Server without a Monitor - 71 Running a G3 Server without a Monitor You can use software such as the Apple Network Administrator Toolkit and a video terminator (p/n 9223470) to run the G3 Server remotely from another computer, thereby allowing you to disconnect the monitor attached to the Server.
Basics Running a G3 Server without a Monitor - 72 4 5 Attach a video terminator to the monitor port on the back panel of the server and then turn on the server again. Follow the instructions that came with the remote access software for logging in to and controlling the server. Note: If you want to connect a monitor at a later time, you must turn off the server before you connect the monitor. The table on the following page explains the DIP switch functions for the video terminator.
Basics Running a G3 Server without a Monitor - 73 Table 6: DIP Switch Function Chart Resolution Monitor Sep. Sync1 C. Sync 12 C.
Basics Running a G3 Server without a Monitor - 74 Table 6: DIP Switch Function Chart Resolution Monitor Sep. Sync1 C. Sync 12 C.
Basics Running a G3 Server without a Monitor - 75 Notes for Table 3: 1 Sep. Sync: denotes Separate Synchronization. 2 C. Sync 1: denotes Composite Synchronization Type 1 (DB15 Pin 3 connected to HD15 Pin 13). 3 C. Sync 2: denotes Composite Synchronization Type 2 (DB15 Pin 3 & 15 connected to HD15 Pin 13). 4 Sync On Grn: denotes Synchronization on Green.
Basics The DAV Connector - 76 The DAV Connector The AV I/O Personality card has a digital audio video (DAV) connector. The DAV connector allows a PCI expansion card to access the AV I/O card video input data bus and associated control signals. The PCI card can use the digital video bus on the AV I/O card to transfer real-time video data to the computer. The PCI expansion card can contain a hardware video compressor or other video processor.
Basics Voltage Switch - 77 Voltage Switch Voltage Switch The voltage switch must be set correctly to avoid damaging the computer. Insert a screw driver in the slot to set the switch to show “115” for voltages between 100 and 130. Set the switch to show “230” for voltages between 200 and 270. Some countries use two standardized voltages. If you aren’t sure which voltage is available, check with the electricity supply company before plugging in the computer.
Basics Voltage Switch - 78 Here is a table listing voltages for some countries: Country Voltage Japan 100 Jamaica, Taiwan 110 South Korea Peru Brazil, Lebanon Philippines 100 or 220 110 or 220 110–220 115 Bermuda, Canada, Puerto Rico, United States, Venezuela 120 Saudi Arabia 127 or 220 Mexico Hong Kong 127 200
Basics Voltage Switch - 79 Country Voltage India, South Africa 220–250 Australia, Kuwait, Malta, New Zealand, Northern Ireland, Papua New Guinea, Oman, Qatar, United Kingdom 240 Bahrain, Chile, China (People’s Republic), Czechoslovakia, Egypt, Greenland, Hungary, Iceland, Iran, Jordan, Liechtenstein, Nepal, Paraguay, Poland, Romania, United Arab Emirates, Russia and the Commonwealth of Independent States (CIS), Yemen, Yugoslavia 220 Israel, Pakistan, Singapore Austria, Belgium, Denmark, Finland,
Basics PowerPC G3 and Backside Cache - 80 PowerPC G3 and Backside Cache Backside cache is a significant architectural design change from earlier PowerPC processors. The main advantage of the backside cache architecture is the speed of the dedicated CPU-to-L2 cache interface. Using the dedicated bus allows the CPU to access the fast L2 cache storage through a high speed bus without addressing the slower system bus or competing with other devices attached to the system bus.
Basics SDRAM DIMMs - 81 PowerPC G3, and a 2.5 L2 bus ratio, the backside cache bus speed will be 100MHz, twice the speed of the system bus. SDRAM DIMMs Three DRAM expansion slots on the logic board accept 3.3 V SDRAM unbuffered 8-byte DIMMs. The 168-pin DIMM has a 64-bit-wide data bus per bank. The minimum bank size supported is 2 MB, and the largest is 64 MB. The largest DIMM supported is a two-bank DIMM of 128 MB using 64 Mbit SDRAM devices.
Basics SGRAM Video Memory - 82 of the same size are installed. Any supported size DIMM can be installed in any DIMM slot, and the combined memory of all the DIMMs installed will be configured as a contiguous array of memory. Important: Power Mac/Server G3 computers use SDRAM DIMMs. DIMMs from older Macintosh computers are not compatible and should not be used even though they fit into the Power Mac/Server G3 DRAM DIMM slots.
Basics SGRAM Video Memory - 83 supports a 4 MB SGRAM SO-DIMM that is 32-bit wide, 144-pin, fast-paged, 83 MHz/12 ns cycle time or faster. Important: Use only SGRAM SO-DIMMs. Never use the 256K or 512K video memory DIMMs used in older computers.
Basics DIMM Slots - 84 DIMM Slots Video Memory Expansion Slot DRAM DIMM Slots ROM Slot (Do not remove the ROM DIMM.
Basics Peripheral Component Interconnect (PCI) - 85 Peripheral Component Interconnect (PCI) The Peripheral Component Interconnect (PCI) expansion slots accept 6.88-inch and 12.283-inch PCI cards. Because the PCI bus is an industry standard, most existing PCI 2.0compliant cards (with the addition of a Mac OS-specific software driver) will work in these computers. PCI offers significantly higher performance than the NuBus architecture used in previous Macintosh models.
Basics Front View - 86 Front View Floppy Drive CD-ROM Drive CD-ROM Drive Open/Close Button Zip Drive Expansion Bay Power Button / Power-on Light Speaker Note: The Power Mac G3 Minitower computer comes with a Zip drive (as shown); the Macintosh Server G3 does not.
Basics Rear View - 87 Rear View SCSI Port Apple Desktop Bus (ADB) Port Ethernet Port (10Base-T) Printer Port External Modem Port Monitor Port Internal Modem Card (optional) Expansion Slot Access Covers Internal Hard Drive Lockable Cover Latch Power Socket Monitor Power Socket Sound Input Port Sound Output Port Security Lock Port
Basics Logic Board Diagram - 88 Logic Board Diagram Power Supply PERCH Jumper Block Slot Ethernet ADB Port Port Monitor Serial SCSI Port Ports Port Internal SCSI Connector CUDA Reset Button IDE Connector PCI Slots Power Supply Connector Video Memory SO DIMM Floppy Drive Connector Voltage Regulator Processor Jumper Block Battery LED Speaker Power CD ROM On/Off Audio DIMM DRAM DIMM Microprocessor
Basics Fan Installation - 89 Fan Installation One or two auxiliary fans may be installed in the baffle handle. Third-party PCI card manufacturers may suggest these fans be installed based on the thermal characteristics of their cards. Two sets of four fan screw posts indicate where you can install these fans. Fans must be positioned so they pull air into the computer, not push air out. Be sure the screws don’t extend down into the space where PCI cards or cables may be present.
Basics Fan Installation - 90 Fan Screw Posts Fan Screw Posts Screw Installation Direction Air Flow Direction
Basics Repair Strategy - 91 Repair Strategy Service the Power Mac/Server G3 computers through module exchange and parts replacement. Customers can request on-site service from an Apple Authorized Service Provider Plus (AASP+) Apple Assurance (US only), or Apple Canada Technical Answerline (Cananda only). They can also choose carry-in service from an AASP.
Basics Repair Strategy - 92 Large businesses, universities, and K-12 accounts must provide a purchase order on all transactions, including orders placed through the AppleOrder (US only) or ARIS (Canada only) system. USA Ordering US Service providers not enrolled in AppleOrder may fax their orders to Service Provider Support (512-9088125) or mail them to Apple Computer, Inc.
Basics Repair Strategy - 93 Canadian Ordering Canadian Service providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada (1-800-903-5284). For Canadian inquiries, please call Service Provider Support at 905-513-5782 and select option #3.
Basics Warranty/AppleCare/ARIS - 94 Warranty/AppleCare/ARIS US Only The Power Macintosh G3 computers are covered under the Apple One-Year Limited Warranty. The AppleCare Service Plan is also available for these products. Service Providers are reimbursed for warranty and AppleCare repairs made to these computers. For pricing information, refer to “Service Price Pages.” Canada Only The Power Macintosh G3 computers are covered under AppleCare.
The Power Macintosh G3 Series: Innovative Product Design for Affordable High Performance A little background Two decades ago, Apple made its name by bringing advanced technology to mainstream users through extraordinarily easy-to-use products. In particular, we gained a reputation for success in pioneering the educational use of computers and championing the advancement of multimedia technology.
Graphics controller and video expansion 3 PCI slots Audio/Video card slot In addition, the logic board design of the Power Macintosh G3 systems exhibits the following characteristics in these vital areas: Processor. These computers use the innovative, next-generation PowerPC G3 processor, which was designed specifically to provide increased power at affordable cost. It does so through three major innovations: a state-of-the-art 0.
The PowerPC G3 Processor: Taking the Macintosh to the Next Level A little background Nearly six years ago, Apple, IBM, and Motorola joined forces to create a new processor technology that would bring the performance advantages of the RISC (Reduced Instruction Set Computing) architecture—at that time limited to costly workstations—to personal computers.
Learning to look beyond megahertz The performance enhancements of the PowerPC G3 processor significantly reduce the usefulness of clock speed in attempting to compare computer performance. Apple systems based on this processor consistently outperform systems with higher clock speeds—in fact, they also outperform Pentium II–based systems. Some examples follow. • A 250-megahertz Macintosh PowerBook G3 is faster than a 266-megahertz Pentium II desktop.
K Service Source Specifications Power Macintosh/Server G3 Minitower
Specifications Introduction - 1 Introduction Specifications information for this product can be found in this chapter and also in the Spec Database, which you can access in one of three ways: — Launch it directly by double-clicking the Apple Spec Database runtime alias at the top level of the Main Service Source CD. — Select "Apple Spec Database" from the Service Source drop-down main menu. — Click the Acrobat toolbar icon for the database, which is near the right end of the toolbar with the letters "SP.
Specifications Processor - 2 Processor CPU Minitower Server Processor Bus PowerPC G3 RISC microprocessor running at 233 MHz, 266 MHz, or 300 MHz Built-in FPU Original logic board requires system software version 8.0 or later with appropriate Enabler version; Version 2 of the logic board requires system software version 8.1 or later with system enabler 777 Requires system software version 8.
Specifications Memory - 3 Memory SDRAM Minitower Server Uses 168-pin, 64-bit, 70 ns or faster, 3.3 V, unbuffered synchronous dynamic access memory (SDRAM) DIMMs (1K, 2K, or 4K refresh rate) 32 MB standard, expandable to 384 MB 64 MB or 128 MB standard, expandable to 384 MB Cache Supports 512K cache module, 3.3 V with SRAM and 178-pin card ROM 4 MB ROM on 160-pin DIMM, 64-bit ROM data bus width Video RAM 2 MB expandable to 4 MB or 6 MB using 32-bit wide, 144-pin, 3.
Specifications I/O Interfaces - 4 I/O Interfaces SCSI Port External SCSI connector is 25-pin D-type connector; supports up to seven SCSI devices Serial Port Two serial ports support AppleTalk and GeoPort serial protocols; accept 8-pin or 9-pin plugs ADB Port One Apple Desktop Bus port for a keyboard, mouse, etc.
Specifications Expansion I/O Interfaces - 5 Three PCI expansion slots, compatible with all PCI 2.0 specification-compliant cards with the addition of Mac OSspecific software driver (not NuBus compatible); accepts three PCI cards (6.88" or 12.283"), or three 15 W cards, or two 25 W cards Three SCSI expansion bays for 3.
Specifications I/O Devices - 6 I/O Devices Keyboard AppleDesign Keyboard Mouse ADB Mouse II Microphone Apple PlainTalk microphone standard
Specifications Disk Storage - 7 Disk Storage Hard Drive Minitower Server 4 GB or 6 GB internal ATA hard drive standard; 4 GB or 9 GB Ultra Wide hard drive optional One or two 4 GB Ultra Wide hard drives standard; 9 GB Ultra Wide hard drive optional Floppy Drive One Apple SuperDrive 1.
Specifications Video - 8 Video Video Display Modes Graphics Acceleration Built-in monitor port supports: • 640 x 480, 800 x 600, 832 x 624 at 32 bits per pixel • 1024 x 768, 1152 x 870, 1280 x 1024, 1600 x 1200 at 16 bits per pixel Built-in graphics controller, 2D and 3D hardware graphics acceleration of 2D QuickDraw graphics
Specifications I/O Cards - 9 I/O Cards PERCH Slot 182-pin microchannel connector (PERCH slot connector) that supports Apple Audio I/O or Audio and Video I/O cards; Note: PERCH slot does not accept PCI cards Audio/Video Sound on Minitower and Server Optional front jack for headphones Rear jack for stereophonic speakers One built-in speaker Supports 16 bits/channel stereo input and output External 1/8" jack for sound in Sample rates of 11.025, or 22.050, or 44.
Specifications Video on Minitower Modem Slot I/O Cards - 10 Video input and output through RCA or S-Video connectors Accepts NTSC, PAL, or SECAM format YUV format for digital video input Video display in 320 x 240 pixel window Pixel expansion for 640 x 480 pixel maximum display Video overlay capability Bi-directional digital audio video (DAV) 60-pin connector for adding video processor on PCI card 112-pin connector to accept optional fax/modem card Note: Does not carry PCI signals
Specifications Electrical - 11 Electrical Line Voltage 100–130 V or 200–240 V depending on voltage switch setting Frequency 50—60 Hz Maximum Power 161 W, 1.
Specifications Physical - 12 Physical Dimensions Height: Width: Depth: Weight: 385 mm; 15.15 in 245 mm; 9.64 in 435 mm; 17.75 in 15 kg; 33.
Specifications Environmental - 13 Environmental Operating Temperature 50 to 104° F (10 to 40° C) Storage Temperature -40 to 116° F (-40 to 47° C) Relative Humidity 5–95% noncondensing Maximum Altitude 10,000 ft.
Power Macintosh G3 Series The Power Macintosh G3 series features exciting Apple innovations in processor technology and system architecture that significantly increase both performance and expandability, to enhance your productivity and encourage your creativity. These systems are designed to transform your ideal vision of professional computing into affordable reality.
Power Macintosh G3 Series Technical Specifications Processor and memory • 266-, 300-, or 333-MHz PowerPC G3 processor • 512K or 1MB backside level 2 cache on processor module; 133-, 150-, or 16-MHz dedicated 64-bit backside bus • 66-MHz system bus • Integrated floating-point unit and 64K on-chip level 1 cache (32K for data and 32K for instruction) • At least 32MB of SDRAM (3.
Power Macintosh G3 Series Desktop and Minitower Computers Ordering Information For detailed information about the currently available configurations, see the chart below. All models also include an internal 1.44MB floppy disk drive; keyboard and mouse; Mac OS 8.1 (which includes Internet access software); complete setup, learning, and reference documentation; and limited warranty.
Macintosh Server G3 The Macintosh Server G3 brings Apple’s recent desktop system innovations into the server world. It builds on the features behind the stunning success of the Power Macintosh G3 computer line by offering additional capabilities designed to enhance workgroup efficiency, such as high-capacity storage and state-of-the-art collaboration, productivity, and reliability software. The result is a unique server solution combining high performance with ease of use and economy.
Macintosh Server G3 Technical Specifications Processor and memory • 233-, 266-, or 300-MHz PowerPC G3 processor • 512K or 1MB backside level 2 cache on processor module; 117-, 133-, or 150-MHz dedicated 64-bit backside bus • Integrated floating-point unit and 64K level 1 on-chip cache (32K for data and 32K for instruction) • 66-MHz system bus • 64MB or 128MB of SDRAM; supports up to 384MB via three DIMM slots • 64-bit memory bus Storage • Internal 1.
K Service Source Take Apart Power Macintosh/Server G3 Minitower
Take Apart Side Access Panel - 1 Side Access Panel No preliminary steps are required before you begin this procedure.
Take Apart Side Access Panel - 2 1 Press the release button and pull the side access panel away from the computer.
Take Apart Floppy Drive - 3 Floppy Drive Note: This topic includes instructions for removing the floppy drive bezel, floppy drive shield, drive carrier, and floppy drive. Before you begin, remove the side access panel.
Take Apart Floppy Drive - 4 1 Gently pry up the tab on the left side of the floppy drive bezel, swing the bezel open, and remove the bezel from the right edge of the floppy drive. Replacement Note: Place the two latches on the right side of the bezel into the two slots in the right side of the bezel shield before connecting the bezel to the left edge of the drive.
Take Apart Floppy Drive - 5 2 3 Using a Phillips screwdriver, remove the two floppy drive shield screws. Remove the floppy drive shield.
Take Apart Floppy Drive - 6 4 5 Disconnect the floppy drive cable from the back of the floppy drive. Slide the floppy drive carrier and drive out of the front of the computer.
Take Apart Floppy Drive - 7 Replacement Note: When inserting the drive into the computer, make sure the drive carrier aligns with the carrier guides. The carrier should slide between five metal tabs below and two metal tabs above the left and right edges of the carrier.
Take Apart Floppy Drive - 8 Note: Perform the following procedure if you are replacing the floppy drive. 6 7 Using a Phillips screwdriver, remove the four carrier mounting screws. Lift the drive off the carrier.
Take Apart CD-ROM or DVD-ROM Drive - 9 CD-ROM or DVD-ROM Drive Note: This topic includes instructions for removing the CD-ROM or DVD-ROM drive and their associated bezels, shields, and carriers. Special instructions for cable routing for Master/Slave configurations can be found at the end of this section. Before you begin, remove the side access panel.
Take Apart CD-ROM or DVD-ROM Drive - 10 1 Gently pry up the tab on the left side of the drive bezel, swing the bezel open, and remove the bezel from the right edge of the chassis. Replacement Note: Place the two latches on the right side of the bezel into the two slots in the right side of the bezel shield before connecting the bezel to the left edge of the drive.
Take Apart CD-ROM or DVD-ROM Drive - 11 2 3 Using a Phillips screwdriver, remove the two shield screws. Remove the drive shield.
Take Apart CD-ROM or DVD-ROM Drive - 12 4 5 Disconnect the following cables from the back of the CD-ROM or DVDROM drive: • Power cable • IDE data cable • CD audio cable Slide the drive and carrier out of the computer.
Take Apart CD-ROM or DVD-ROM Drive - 13 Replacement Note: When inserting the drive into the computer, make sure the drive carrier aligns with the carrier guides. The carrier should slide between five metal tabs below and two metal tabs above the left and right edges of the carrier.
Take Apart CD-ROM or DVD-ROM Drive - 14 Note: Perform the following procedure if you are replacing the CD-ROM or DVD-ROM drive. 6 7 Using a Phillips screwdriver, remove the four carrier mounting screws. Lift the drive off the carrier.
Take Apart CD-ROM or DVD-ROM Drive - 15 Master/Slave Cable Routing Some G3 Minitower logic boards support master and slave IDE configurations, allowing you to connect two devices to a single IDE channel. These boards ship with a special split IDE cable that also supports master and slave configurations. The graphic at left shows how the split master/slave IDE cable connects to the devices in the unit.
Take Apart CD-ROM or DVD-ROM Drive - 16 The graphic at left shows how the split master/slave IDE cable connects to the logic board. The same connector is used for both the regular IDE and master/ slave IDE cables.
Take Apart Zip Drive - 17 Zip Drive Note: This topic includes instructions for removing the Zip drive bezel, Zip drive shield, drive carrier, and Zip drive. Special instructions for cable routing for Master/Slave configurations can be found at the end of this section. Before you begin, remove the side access panel.
Take Apart Zip Drive - 18 1 Gently pry up the tab on the left side of the Zip drive bezel, swing the bezel open, and remove the bezel from the right edge of the Zip drive. Replacement Note: Place the two latches on the right side of the bezel into the two slots in the right side of the bezel shield before connecting the bezel to the left edge of the drive.
Take Apart Zip Drive - 19 2 3 Using a Phillips screwdriver, remove the two Zip drive shield screws. Remove the Zip drive shield.
Take Apart Zip Drive - 20 4 5 Disconnect the power cable and SCSI cable from the back of the Zip drive. Slide the Zip drive carrier and drive out of the front of the computer.
Take Apart Zip Drive - 21 Replacement Note: When inserting the drive into the computer, make sure the drive carrier aligns with the carrier guides. The carrier should slide between five metal tabs below and two metal tabs above the left and right edges of the carrier.
Take Apart Zip Drive - 22 Note: Perform the following procedure if you are replacing the Zip drive. 6 7 Using a Phillips screwdriver, remove the four carrier mounting screws. Lift the drive off the carrier.
Take Apart Zip Drive - 23 Master/Slave Cable Routing Some G3 Minitower logic boards support master and slave IDE configurations, allowing you to connect two devices to a single IDE channel. These boards ship with a special split IDE cable that also supports master and slave configurations. The graphic at left shows how the split master/slave IDE cable connects to the devices in the unit.
Take Apart Zip Drive - 24 The graphic at left shows how the split master/slave IDE cable connects to the logic board. The same connector is used for both the regular IDE and the master/slave IDE cables.
Take Apart Hard Drive - 25 Hard Drive Note: This topic includes instructions for removing the drive carrier and hard drive. Before you begin, remove the side access panel.
Take Apart Hard Drive - 26 1 2 3 Using a Phillips screwdriver, remove the two hard drive screws. Disconnect the power cable and IDE data cable from the back of the hard drive. Slide the hard drive carrier and drive out of the computer.
Take Apart Hard Drive - 27 Replacement Note: When inserting the drive into the computer, make sure the drive carrier aligns with the metal tabs in the drive bay.
Take Apart Hard Drive - 28 Note: Perform the following procedure if you are replacing the hard drive. 4 5 Using a Phillips screwdriver, remove the four carrier mounting screws. Slide the drive forward out of the carrier.
Take Apart Open the Chassis - 29 Open the Chassis Before you begin, carefully lay the computer on its side with the side access panel facing up. 1 Unlock the top chassis by moving the two green locking latches upward and outward.
Take Apart Open the Chassis - 30 2 Using the handle, gently swing the top chassis up and out until it rests firmly on the work surface.
Take Apart Power Supply - 31 Power Supply Before you begin, remove the following: • Side access panel • Hard drive
Take Apart Power Supply - 32 1 2 3 Disconnect the power cables from the logic board. Release the power cables from the cable tie wrap. Using a Phillips screwdriver, remove the two power supply fan mounting screws.
Take Apart Power Supply - 33 4 Using a Phillips screwdriver, remove the four power supply mounting screws.
Take Apart Power Supply - 34 5 6 Remove the interior power supply screws. Thread the power cables through the opening in the top chassis and lift the power supply and fan assembly from the computer.
Take Apart Power Supply - 35 7 Remove the two screws securing the power supply to the mounting bracket. Replacement Note: When replacing the power supply and fan assembly, you must tie up the power supply cables with a tie wrap and secure the tie wrap to the internal chassis. Also, be sure that all cables are pulled through the chassis opening as far as possible to prevent interference with the fan assembly.
Take Apart Power Supply - 36 IMPORTANT: You must set the power supply voltage switch to the correct setting (115V in the U.S.) to avoid damaging the computer. See “Voltage Switch” in Basics for instructions and an international voltage chart. The switch is accessible through the computer’s rear panel when the power supply is installed. IMPORTANT: There is a power supply jumper on the logic board located next to the PCI slots.
Take Apart Fan - 37 Fan Before you begin, remove the following: • Side access panel • Hard drive • Power supply
Take Apart Fan - 38 1 Using a Phillips screwdriver, remove the interior power supply mounting screws and disconnect the power supply-to-fan connector.
Take Apart Fan - 39 Replacement Note: Before removing the fan, notice the direction in which the fan is installed. Replace the fan in the same direction (i.e. insert the fan into the housing so that 1) the fan cable is nearest the open end of the housing, and 2) the label on the fan is not visible). 2 Remove the four screws securing the fan to the fan housing and lift out the fan.
Take Apart Speaker Bezel - 40 Speaker Bezel Before you begin, do the following: • Remove the side access panel • Open the chassis
Take Apart Speaker Bezel - 41 1 2 Gently pry up the four tabs on the top side of the speaker bezel and swing it open. Release the eight tabs on the bottom side of the speaker bezel and remove the bezel from the computer.
Take Apart Speaker - 42 Speaker Note: This topic includes instructions for removing the speaker housing, speaker, and fan cable.
Take Apart Speaker - 43 1 2 3 Carefully lay the computer on its side. Disconnect the speaker cable from the logic board. Press in the two latches on the sides of the speaker housing and slide the housing straight up out of the computer.
Take Apart PCI Cards - 44 PCI Cards Note: the FireWire and Ultra Wide SCSI PCI cards have unique installation procedures, which are explained in separate takeapart topics following this procedure.
Take Apart PCI Cards - 45 1 Using a Phillips screwdriver, remove the screw securing the PCI card to the rear panel.
Take Apart PCI Cards - 46 2 Using both hands, gently pull straight out on the card to remove it. Replacement Note: Align the PCI card with the expansion slot and press in firmly until the connector is seated. Do not force the card or you may damage the connector pins. If you feel resistance, remove the card and try installing it again. Once the card is securely inserted into the PCI slot, replace the screw that holds the PCI card frame to the rear panel.
Take Apart Ultra Wide SCSI PCI Card - 47 Ultra Wide SCSI PCI Card The ultra wide SCSI card installs like any other PCI card (see the PCI Cards take-apart topic for more information); however, the ultra wide SCSI card must be installed in the first PCI slot (that is, the PCI slot nearest the video card). In addition, the ultra wide SCSI cable must be routed in a very specific manner. The procedure for installing and routing the ultra wide SCSI cable is explained on the following pages.
Take Apart Ultra Wide SCSI PCI Card - 48 1 Attach the end of the ultra wide SCSI cable that has just one connector to the ultra wide SCSI PCI card. Note: The ultra wide cable folds as shown about 4 inches from the connector that attaches to the ultra wide SCSI card.
Take Apart Ultra Wide SCSI PCI Card - 49 2 Route the cable along the back edge of the chassis and away from the logic board being sure to leave plenty of room between the ultra wide SCSI cable and the heatsink. Note: The ultra wide cable should be at least a 1/2 inch away from the heatsink when the chassis is closed.
Take Apart Ultra Wide SCSI PCI Card - 50 3 4 Stuff the unused SCSI cable (if present) behind the power cable and through the first cut out in the drive chassis. Note: If the unused SCSI cable is attached to the logic board, it must be terminated. The IDE cable (if present) should also be behind the power cable and fed through the first cut out in the drive chassis.
Take Apart Ultra Wide SCSI PCI Card - 51 5 Tape down the ultra wide SCSI cable two times to the internal chassis and fold the cable as shown before feeding it through the internal chassis. Note: The edge of the cable fold should be over the handle baffle.
Take Apart Ultra Wide SCSI PCI Card - 52 6 Once you feed the ultra wide SCSI cable through the internal chassis, tape the cable to the plastic fan baffle (which is behind the power supply), being careful not to cover the vents on the power supply with the tape. Note: Be sure to use the Kapton tape that is on the service parts list to tape the cable in place.
Take Apart Ultra Wide SCSI PCI Card - 53 7 8 9 Attach the very end of the ultra wide SCSI cable (i.e., the very last connector) to the ultra wide hard drive, which in most cases will be installed above the power supply. Note: Two extra connectors are provided in the middle of the ultra wide SCSI cable in case additional ultra wide hard drives are installed in the third and fourth drive bays.
Take Apart FireWire PCI Card - 54 FireWire PCI Card Before you begin, do the following: • Remove the side access panel • Open the chassis Note: The FireWire card comes from the factory installed in the middle PCI slot.
Take Apart FireWire PCI Card - 55 1 2 Disconnect the internal FireWire cable from the card. Using a Phillips screwdriver, remove the screw securing the FireWire card to the rear panel and gently lift up on the card to remove it.
Take Apart FireWire PCI Card - 56 Replacement Note: The following steps explain how to route and reconnect the FireWire cable. 3 4 After connecting the internal FireWire cable to the card, route the cable along the edge of the logic board. Tuck the cable underneath the corner of the logic board to keep it out of the way. Run the internal FireWire cable through the opening in the drive chassis as shown.
Take Apart FireWire PCI Card - 57 5 Run the FireWire cable up to meet the drives. Then, connect the very end of the FireWire cable to the power supply cable.
Take Apart FireWire PCI Card - 58 6 Connect the second to last connector on the FireWire cable to the back of the CD-ROM or DVD-ROM drive.
Take Apart FireWire PCI Card - 59 Note: The graphic at left shows the internal FireWire cable and each of its connectors.
Take Apart Processor Module - 60 Processor Module Before you begin, do the following: • Remove the side access panel • Open the chassis
Take Apart Processor Module - 61 1 Remove the screw that holds the processor module wire to the logic board. Replacement Note: The processor module wire attaches to the top of the logic board (not underneath). When screwing down the wire, be careful not to damage the capacitor that is next to the screw hole. Use a manual screw driver to avoid damaging the capacitor.
Take Apart Processor Module - 62 Warning: The heat sink may be hot to the touch. 2 While pressing down on the top of the clip that secures the heatsink, use a small flatblade screwdriver to lift up on the front tab of the clip to release it.
Take Apart Processor Module - 63 3 Lift up the clip and remove it from heatsink.
Take Apart Processor Module - 64 4 Lift up the heatsink to remove it from the processor module.
Take Apart Processor Module - 65 5 Lift the metal lever at the left of the processor module.
Take Apart Processor Module - 66 6 Pick up the processor module by the edges and gently lift straight up to remove it. Be careful not to bend the pins underneath the module. IMPORTANT: If you are only replacing the processor module, stop here. If, however, you are removing the processor module in order to replace the logic board, continue on to the next page. Replacement Note: Don’t force the processor module.
Take Apart Processor Module - 67 7 Remove the warranty sticker and red jumper block located next to the battery if replacing the logic board only. IMPORTANT: When replacing the processor module, you must change the processor jumper block and warranty sticker to be compatible with the processor module you are installing. Failure to install the jumper block properly will result in a unit that does not power on. See the instructions on the following page.
Take Apart Processor Module - 68 8 Processor Jumper Block Pin1 Pin1 Pin1 233 MHz 266 MHz 300 MHz Black Red White Battery The graphic at left shows how the processor module jumper should be installed. You will either install a red jumper (for the 233 MHz processor), a white jumper (for the 266 MHz processor), or a black jumper (for the 300 MHz processor). Be sure to cover the pins as shown and to install the jumper block with the gold connector pins facing down towards the board.
Take Apart Processor Module - 69 Replacement Note: Position the processor module evenly over the processor module slot and make sure the card is seated evenly. Press down gently on the processor module to install it. Never force the module into place or you may damage the gold connector pins on the underside. Flip down the metal lever that secures the processor module to the board. Replace the heat sink on top of the processor module.
Take Apart Logic Board - 70 Logic Board Before you begin, do the following: • Remove side access panel • Remove PCI cards (if present) • Remove I/O card • Open chassis Note: Before you replace the logic board, you should verify that the problem is not with the voltage regulator. Refer to the Troubleshooting chapter for more information.
Take Apart Logic Board - 71 1 2 Disconnect all cables from the logic board. Using a Phillips screwdriver, remove the logic board mounting screws, one of which attaches the processor module wire to the logic board. Replacement Note: The processor module wire attaches to the top of the logic board (not underneath). Be careful not to damage the nearby capacitor when screwing down the processor wire.
Take Apart Logic Board - 72 3 4 5 Release the two plastic latches on the front of the logic board. Replacement Note: Make sure the latches reengage the logic board. Slide the logic board forward far enough for the ports to clear the openings in the I/O panel. Lift the board out of the computer.
Take Apart Logic Board - 73 PCI slots). If the logic board is installed in the PM G3 Minitower, this jumper must cover the pins marked “PS”. Failure to install this jumper correctly will result in a computer that will not boot up. Note: Replacement logic boards come with the J28 jumper pre-installed in the PM G3 Desktop configuration; that is, the jumper comes installed on the “Mac” pins.
Take Apart Logic Board - 74 jumper with a new warranty sticker, which comes with the replacement logic board. This sticker must be in place to protect the customer’s product warranty. IMPORTANT: If you are replacing the logic board and the new logic board does not come with a voltage regulator, you must transfer the voltage regulator from the old logic board to the new board.
Take Apart Logic Board - 75 Replacement Note: As a final step, you must reconnect all cables to the logic board. Depending on which version of the G3 Minitower logic board you have, you will either see a regular IDE cable or a split master/ slave IDE cable. Both versions of the IDE cable attach to the same connector on the logic board. The graphic at left shows the split master/slave IDE cable connected.
Take Apart I/O Card - 76 I/O Card Before you begin, do the following: • Remove the side access panel • Open the chassis
Take Apart I/O Card - 77 1 2 3 From the back side of the computer, remove the single screw that attaches the I/O card to the rear panel. Remove the two I/O card mounting screws that attach the I/O card to the metal chassis. Gently lift up on the I/O card to remove it from the computer.
Take Apart Voltage Regulator - 78 Voltage Regulator Before you begin, do the following: • Remove the side access panel • Open the chassis
Take Apart Voltage Regulator - 79 1 Press down on the two white levers on either side of the voltage regulator to release it. Lift up on the voltage regulator to remove it from the logic board.
Take Apart Modem Card - 80 Modem Card Before you begin, do the following: • Remove the side access panel • Open the chassis • Remove the I/O Card
Take Apart Modem Card - 81 1 Lay the I/O card on a flat surface and gently lift up on the modem card to remove it. Replacement Note: Align the modem card evenly over the modem slot on the I/O card and press down gently to install the card. Do not force the modem card into the slot.
Take Apart Chassis Locking Latches - 82 Chassis Locking Latches Before you begin, remove the side access panel.
Take Apart Chassis Locking Latches - 83 1 Remove the screw and washer and remove the locking latch.
Take Apart Chassis Handle - 84 Chassis Handle Before you begin, remove the side access panel.
Take Apart Chassis Handle - 85 1 Lift the retainer latch while sliding the handle toward the back of the computer.
Take Apart Top Cover - 86 Top Cover Before you begin, remove the following: • Side access panel • Floppy drive • Hard drive
Take Apart Top Cover - 87 1 2 Release the three tabs holding the top cover by pushing the front tab toward the back of the unit and the back two tabs toward the front of the unit (see arrows). Slide the top cover toward the stationary panel side to remove it from the chassis.
Take Apart I/O Panel - 88 I/O Panel Before you begin, remove the following: • Side access panel • PCI cards (if present) • I/O card • Logic board
Take Apart I/O Panel - 89 1 2 3 Using a small flatblade screwdriver, lift up on the two EMI shield stop tabs at either end of the I/O panel shield to release the tabs. Using the same flatblade screwdriver, gently lift up on the three plastic tabs at the bottom of the I/O panel to release them. Swing the panel up, release the top two tabs, and remove the I/O panel and shield from the computer.
Take Apart Rear Panel - 90 Rear Panel Before you begin, remove the following: • Side access panel • PCI cards (if present) • I/O card
Take Apart Rear Panel - 91 1 2 Using a small flatblade screwdriver, gently release the top five tabs and two bottom tabs on the rear panel. Lift the rear panel from the computer to remove it.
Take Apart Stationary Panel - 92 Stationary Panel Before you begin, remove the following: • Side access panel • PCI cards (if present) • I/O card • Logic board • I/O panel • Rear panel • Speaker bezel
Take Apart Stationary Panel - 93 1 Using a flatblade screwdriver, release the six latches holding the stationary panel to the chassis.
Take Apart Stationary Panel - 94 2 3 4 Lift the chassis slightly and slide the stationary panel forward. Push the light/power actuator in toward the case so that it is released from the stationary panel. Remove the panel from the computer.
Take Apart Logic Board Latch - 95 Logic Board Latch Before you begin, remove the following: • Side access panel • PCI cards (if present) • Logic board • I/O panel • AV module video in/out • Rear panel • Speaker bezel • Stationary panel
Take Apart Logic Board Latch - 96 1 2 Carefully lay the computer on its side so the bottom of the chassis is exposed. Using a flatblade screwdriver, release the tab holding the logic board latch to the underside of the chassis.
Take Apart Logic Board Latch - 97 3 Slide the logic board latch forward and remove it from the computer.
Take Apart Light Pipe/Power Actuator - 98 Light Pipe/Power Actuator Before you begin, remove the following: • Side access panel • PCI cards (if present) • I/O card • Logic board • I/O panel • Rear panel • Speaker bezel • Stationary panel
Take Apart Light Pipe/Power Actuator - 99 1 Lift the end of the LED cable slightly and remove the light pipe lamp from the light pipe/power actuator.
Take Apart Light Pipe/Power Actuator - 100 2 Press in the two latches on the sides of the actuator and slide it forward out of the chassis.
Take Apart Chassis - 101 Chassis Remove the following: • Side access panel • PCI cards (if present) • I/O card • Logic board • I/O panel • Rear panel • Speaker bezel • Stationary panel • Light/Power actuator • Speaker • Floppy drive • CD-ROM or DVD-ROM drive • Zip drive • Hard drive
Take Apart Chassis - 102 • • • • Bottom drives Power supply Locking chassis latches Chassis handle
K Service Source Upgrades Power Macintosh/Server G3 Minitower
Upgrades PCI or I/O Cards - 1 Shield Port Access Cover Screw Port Access Cover PCI or I/O Cards Before you begin, open the chassis. 1 2 Remove the screw that holds the port access cover in place. Pull out the access cover. Note: If you remove all three port access covers, be sure the sheet metal shield remains under the edge of the logic board.
Upgrades PCI or I/O Cards - 2 3 I/O Card Screw Align the card connector with the expansion slot and press straight down until the connector inserts all the way into the slot. Note: It may be helpful to hold the card slightly away from the port access opening until the card fits into the slot. Note: If the PCI card is a full 12 inches, be sure it fits into one of the three card guides at the front of the computer.
Upgrades PCI or I/O Cards - 3 4 I/O Card Screw 5 6 Port Access PCI Slot 12-Inch PCI Card Guides If you meet resistance, pull the card out and try again. To test the connection, pull the card up gently. The card should remain firmly in place. Reinstall the screw to secure the card in place.
Upgrades DRAM - 4 DRAM DRAM DIMM Connectors Notches DRAM Slot (1 of 3) Ejector Before you begin, open the chassis. Note: DIMM shape and components may vary. 1 Ribs (inside slot) To remove existing DRAM DIMMs to make room for new ones, push down on the ejectors.
Upgrades DRAM - 5 2 DRAM DIMM Connectors Notches DRAM Slot (1 of 3) Ejector Ribs (inside slot) 3 Align DIMM notches with DRAM slot ribs. Note: The DIMM is designed to fit in the slot only one way. With ejectors open, press the DIMM into the slot. Note: Slot may have one or two ejectors.
Upgrades VRAM - 6 VRAM SGRAM SO-DIMM Rib SGRAM SO-DIMM Video Memory Slot Notch Connectors Before you begin, open the chassis. Note: SGRAM DIMM shape and components may vary. 1 To remove existing SGRAM DIMM, spread arms of video memory slot apart slightly. The SGRAM DIMM will pop up.
Upgrades VRAM - 7 2 SGRAM SO-DIMM Rib SGRAM SO-DIMM Video Memory Slot Notch Connectors 3 Align SGRAM DIMM notches with VRAM slot ribs. Note: SGRAM DIMM fits into slot only one way. Press the SGRAM DIMM into the slot. Note: SGRAM DIMM should be flat and parallel to the logic board.
Upgrades Modem Card - 8 Modem Card Before you begin, do the following: • Remove the side access panel • Open the chassis • Remove the I/O Card
Upgrades Modem Card - 9 1 2 Insert a small flatblade screwdriver in the modem slot cover on the I/O card. Gently twist the screwdriver to pop out the metal modem slot cover.
Upgrades Modem Card - 10 1 Holding the modem card at a slight angle to the I/O card, insert the metal lip on the modem card’s connector panel through the opening in the I/O card.
Upgrades Modem Card - 11 2 3 Gently swing down the modem card so that it is aligned on top of the modem card slot on the I/O card. Gently press down evenly on the modem card to install it. Be sure the card is properly seated.
Upgrades Modem Card - 12 4 Reinstall the I/O card in the computer. Be sure to insert the three screws that secure the I/O card to the metal chassis.
K Service Source Troubleshooting Power Macintosh/Server G3 Minitower
Troubleshooting General/ - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the cures in the order presented. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. (Note: If you have replaced a module, reinstall the original module before you proceed to the next cure.
Troubleshooting New Components Theory of Operation/Voltage Regulator - 2 New Components Theory of Operation New components on the Power Macintosh G3 and Macintosh Server G3 logic board and new strategies for parts replacement make troubleshooting these systems significantly different from previous models. Take a moment to read and understand how each of these new components interacts with the system.
Troubleshooting New Components Theory of Operation/Processor Module - 3 Processor Module The logic board comes with a removable processor module. You can replace this module when the logic board or processor module fails. The processor module sits in a ZIF socket for easy removal. Processor modules can be ordered from Service, and each is shipped with the appropriate jumper configuration block to place in location J16. The processor should rarely fail. Replace it only as a last resort.
Troubleshooting New Components Theory of Operation/Jumper Location J16 - 4 Jumper Location J16 The jumper block you place at location J16 configures the board to work with different processor modules. Use the appropriate jumper block, identified by color, for each processor module. Refer to “Processor Module” in Take-Apart for instructions. Processor Speed Jumper Color 266 White 233 300 Red Black The jumper block is protected by a void-warranty sticker.
Troubleshooting New Components Theory of Operation/Jumper Location J28 - 5 Jumper Location J28 Jumper location J28 controls which power supply the logic board can accommodate. When you receive a Power Macintosh G3/Macintosh Server G3 logic board from Service, you need to place the jumper in the proper location. The power supply used in the Power Macintosh G3 Desktop computer is different from the power supply used in the Power Macintosh G3 Minitower and Macintosh Server G3 computers.
Troubleshooting New Components Theory of Operation/I/O Cards - 6 I/O Cards Power Macintosh G3/Macintosh Server G3 computers require an I/O card that moves video and/or audio from the main logic board. These cards are placed in the PERCH connector on the main logic board. If the card is not seated correctly, different symptoms appear. Look in the Symptom Charts for details on troubleshooting these cards. Note: the computer will boot up without the I/O card installed, but they will not operate properly.
Troubleshooting New Components Theory of Operation/HFS+ Formatted Drives - HFS+ Formatted Drives Some Power Macintosh G3 Minitower computers ship with hard drives that are formatted with HFS and some later models ship with hard drives that are formatted with HFS+ (also referred to as Mac OS Extended format). (Note: the hard drives in all Macintosh Server G3 computers are formatted with HFS+.
Troubleshooting New Components Theory of Operation/HFS+ Formatted Drives Note: When diagnosing hard drive problems, it is important to verify whether or not the customer may have used the wrong disk repair software for their drive before assuming that the problem is hardware related. If you experience problems with a hard drive that has been formatted with HFS+, Apple Computer recommends using the version of Disk First Aid included on the system software CD that shipped with the unit.
Troubleshooting New Components Theory of Operation/HFS+ Formatted Drives Use the Get Info command in system 8.1 to determine how a hard drive has been formatted. Drives formatted with HFS will appear as “Mac OS Standard”, while drives formatted with HFS+ will appear as “Mac OS Extended.” For more information on HFS+ formatting of hard drives, refer to the Technical Info Library, article # 30344.
Troubleshooting Cleaning Procedure for Card Connectors/HFS+ Formatted Drives Cleaning Procedure for Card Connectors It is possible for residue to build up on the gold edge connector pins on some PCI cards, which could cause a variety of symptoms. If you are having problems with a PCI card, inspect the connector pins with a magnifying glass. If you find residue, use a pencil eraser to gently clean the pins.
Troubleshooting Power Supply Verification/Verification Procedure - 11 Power Supply Verification The Power Macintosh G3 logic board requires a “trickle” power of +5V in order to power-up. If this trickle power is not present, the system will not power-up. If the system fails to power-up, follow the procedure outlined below to determine whether or not the problem is related to the power supply. Note: In order to verify the power supply you will need a voltmeter.
Troubleshooting Power Supply Verification/Verification Procedure - 12 1. Plug in a known-good power cord into the back of the computer. Note: Do NOT power on the computer. Note: For the next steps, refer to Figure 1 on the next page to identify the pins indicated. 2. Connect the black lead of the voltmeter to pin 16 of the power supply connector. Connect the red lead of the voltmeter to pin 9 (purple wire) of the 20-pin power supply cable. The voltmeter should measure approximately +5V.
Troubleshooting Power Supply Verification/Verification Procedure - 13 Figure 1.
Troubleshooting Power Supply Verification/Verification Procedure - 14 3. Power up the computer by pressing the On/Off button on the front of the Power Mac G3. Note: Verify that the power on/ off cable is plugged into connector J30. If the computer powers up normally then the power supply is OK. If the power supply does not power up, continue on to the next step. 4. Check to see if the power supply fan is spinning.
Troubleshooting Power Supply Verification/Verification Procedure - 15 voltmeter should measure approximately +3.3V. If you do not measure +3.3V, re-check the voltmeter connections and check for voltage again. If voltage is still not present, replace the power supply; otherwise, continue on to the next step. 6. Connect the black lead of the voltmeter to pin 16 of the power supply connector. Connect the red lead of the voltmeter to pin 4 (red cable) of the 20-pin power supply cable.
Troubleshooting Power Supply Verification/Verification Procedure - 16 approximately +12V. If you do not measure +12V, re-check the voltmeter connections and check for voltage again. If voltage is still not present, replace the power supply; otherwise, continue on to the next step. 8. The testing is complete. You have just verified that the power supply is not faulty and is not the cause of the “No powerup” problem.
Troubleshooting Symptom Charts/System - 17 Symptom Charts System Fan on power supply is running, but no startup chime, screen is black, drive not accessed at startup, and no LED on front of system 1 2 3 4 5 Verify power supply voltage switch is set correctly for your region (see “Voltage Switch” in Basics chapter for more information). Check jumper block J28. Be sure setting is correct for type of power supply installed (see “Logic Board” in Take-Apart chapter for more information).
Troubleshooting Symptom Charts/System - 18 6 7 8 9 Reseat ROM DIMM. Replace voltage regulator. Replace logic board. Replace processor module. Fan is running, LED is on, drive is accessed at startup, but no startup chime and screen is black Reseat ROM DIMM. No apparent power, fan isn’t running, no LED 1 2 3 4 5 Verify power cord is attached securely at both ends. Verify that the power outlet is good. Verify ADB cable is good and connected properly.
Troubleshooting Symptom Charts/System - 19 Apart chapter for more information). 6 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics chapter for instructions.) 7 Reset logic board. (Refer to “Resetting the Logic Board” in Basics chapter for instructions.) 8 Replace power cord. 9 Reseat voltage regulator. 10 Check the power supply by following the procedures in “Power Supply Verification” outlined earlier in this troubleshooting chapter. 11 Replace logic board.
Troubleshooting Symptom Charts/System - 20 Computer begins to power up, the fan and hard drive are spinning, the power LED is lit, but there is no video and the boot chime is followed by sound of breaking glass 1 2 Clicking, chirping, thumping, or rubbing 1 3 4 5 2 3 4 Reseat ROM DIMM. Reseat DRAM DIMMs. (Note: the computer does not ship with any on-board memory. You must have a DRAM DIMM installed for the computer to boot properly.
Troubleshooting System shuts down intermittently Symptom Charts/System - 21 5 6 7 8 Replace logic board. Replace floppy drive cable. Replace floppy drive. Replace I/O card. 1 Make sure air vents are clear. Thermal protection circuitry may shut down system. After 30 to 40 minutes, system should be OK. Make sure power cord is plugged in firmly. Replace power cord. Check battery. Reset Cuda chip. (Refer to “The Cuda Chip” in Basics chapter for instructions.) Reset logic board.
Troubleshooting System intermittently crashes or hangs Symptom Charts/System - 22 1 2 3 4 5 6 7 Verify system software is version 8.0 or later with enabler 770 for G3 Minitower, or version 8.1 or later with appropriate software extensions for G3 Server. Verify software is known-good. Do a clean install of system software. Verify software is Power Macintosh compatible (contact developer). Also, try booting with extensions off to determine if there are system init problems. Clear parameter RAM.
Troubleshooting During startup, following message is displayed, "This startup disk will not work on this Macintosh model...." Symptom Charts/System - 23 1 2 3 Verify startup disk is good. Verify system software is version 8.0 or later with enabler 770 for G3 Minitower, or version 8.1 or later with appropriate software extensions for G3 Server. Do a clean install of system software.
Troubleshooting Symptom Charts/Error Chords - 24 Error Chords One-part error chord (sound of breaking glass) sounds during startup sequence 1 2 3 4 5 Disconnect IDE data cable from hard drive and reboot system. If startup sequence is normal, initialize hard drive. Test unit again with IDE data cable connected. If error chord still sounds, replace hard drive. Disconnect floppy drive cable from floppy drive and reboot system. If startup sequence is normal, replace floppy drive. Reseat processor module.
Troubleshooting Symptom Charts/Video - 25 Video Screen is black, but boot tone is present, drive operates, fan is running, and LED is lit 1 2 3 4 5 6 7 8 9 Adjust brightness on monitor. Clear parameter RAM. Hold down
Troubleshooting Screen is black, no boot tone and drive does not operate, but fan is running and LED is lit Symptom Charts/Video - 26 1 2 3 4 5 6 Boot tone is present and screen lights up, but nothing is displayed on screen 1 2 3 4 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics chapter for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics chapter for instructions.) Remove all SDRAM DIMMs and try replacing them one at a time to test. Replace any bad DIMMs.
Troubleshooting Horizontal flickering lines when viewing Apple Video Play application with video mirroring on Symptom Charts/Video - 27 5 6 Replace logic board. Replace processor module. 1 Replace the Audio/Video card with a Version II Audio/Video card (p/n 661-2044).
Troubleshooting Symptom Charts/Floppy Drive - 28 Floppy Drive Internal floppy drive does not operate 1 2 3 4 5 Replace floppy disk with known-good disk. Replace floppy drive cable. Replace floppy drive. Replace logic board. Replace processor module. During system startup, disk ejects; display shows icon with blinking "X" 1 2 3 4 5 Replace disk with known-good system disk. Replace floppy drive cable. Replace floppy drive. Replace logic board. Replace processor module.
Troubleshooting Symptom Charts/Floppy Drive - 29 4 5 Replace logic board. Replace processor module. Drive attempts to eject disk, but doesn’t 1 2 Reseat floppy drive bezel and drive so bezel slot aligns correctly with drive. Replace floppy drive. Internal floppy drive runs continuously 1 2 3 4 5 Replace disk with known-good floppy disk. Replace floppy drive cable. Replace floppy drive. Replace logic board. Replace processor module. MS-DOS drive does not recognize a disk formatted on a 1.
Troubleshooting Symptom Charts/Hard Drive - 30 Hard Drive Single internal hard drive does not operate; drive doesn’t spin 1 2 No internal SCSI drives operate 1 3 2 3 4 5 6 7 Replace hard drive power cable. Replace hard drive. If problem resolved, reinstall IDE device driver and system software. Replace power supply. Verify there are no duplicate SCSI device addresses on a single SCSI bus. Disconnect external SCSI devices and check for proper termination.
Troubleshooting Works with internal or external SCSI devices but not with both Symptom Charts/Hard Drive - 31 1 2 3 4 Verify there are no duplicate SCSI device addresses Replace terminator on external SCSI device. Verify that SCSI device at end of internal SCSI data cable is only device terminated. Refer to appropriate manual to troubleshoot defective external device.
Troubleshooting Symptom Charts/Peripherals - 32 Peripherals Cursor does not move 1 2 6 7 Check mouse connection. Inspect inside of mouse for buildup of dirt or other contaminants. Clean mouse if necessary. If mouse was connected to keyboard, connect mouse to computer ADB port instead. If mouse works, replace keyboard. Replace ADB cable. If mouse does not work in any ADB port on computer, replace mouse. Replace logic board. Replace processor module. 1 2 3 Boot from floppy or bootable CD.
Troubleshooting Double-click doesn’t open application, disk, or server Symptom Charts/Peripherals - 33 1 2 5 Remove duplicate system folders. Clear parameter RAM. Hold down
Troubleshooting Symptom Charts/Peripherals - 34 Known-good serial printer does not work 1 2 3 4 5 6 Verify you have correct version of system software. Verify that Chooser is set correctly. Reinstall correct printer drivers. Do clean install of system software. Replace printer interface cable. Replace logic board. Retain customer's DIMMs. Known-good network printer does not print 1 2 3 4 Check network connections. Verify you have correct version of system software.
Troubleshooting Symptom Charts/CD-ROM Drive - 35 CD-ROM Drive CD-ROM drive does not work 1 2 Try using known-good compact disc. Replace CD-ROM drive mechanism. Macintosh does not display CD-ROM icon once CD is inserted in drive 1 2 3 Try using known-good compact disc. Verify CD-ROM software is installed. Reinstall CD-ROM software. You may have to use an external CD-ROM drive. Reseat CD-ROM data cable at logic board connector as well as at CD-ROM connector. Replace CD-ROM drive mechanism.
Troubleshooting Symptom Charts/Miscellaneous - 36 Miscellaneous No sound from speaker 1 2 3 4 5 6 7 Ethernet connection drops off line by itself Disconnect any microphones or external speakers. Verify that volume setting in Control Panel is adequate and mute is not checked. Clear parameter RAM. Hold down
K Service Source Exploded View Power Macintosh/Server G3 Minitower
Exploded View 2 Rear Panel 922-3297 Rear Drive Carrier 922-2600 Hard Drive 4GB IDE 661-1342 4GB UW SCSI661-2050 9GB UW SCSI 661-2047 Power Supply Bracket 922-3288 Modem Apple/GV 56.
Power Macintosh G3 Minitower Screw Matrix 922-2739 w/lock washer 922-3636 Power Supply Mounting (2) (underside of swinging chassis) Power Supply to Fan Housing (4) Power Supply Interior (2) Floppy Drive to Carrier (4) CD-ROM Drive to Carrier (4) Zip-Drive to Carrier (4) Hard Drive Bracket to Chassis (2) 0 1 8 1 3 1 5 3 4 8 2 8 4 0 1 1 8 1 3 1 5 3 4 8 2 8 4 922-3268 922-3644 w/lock washer Hard Drive Bracket to Hard Drive (4) Latch (1)ea 0 1 8 1 Scale Scale 1 3 1 5 3 4 8 2 8 4 0 1 1 8 1
033-1009 AV Card Update 4/7/98 7:18 PM Page 1 About Your Optional Power Macintosh Audio/ Video Card The information in this update describes the additional capabilities of Power Macintosh computers that are equipped with an optional Audio/Video (AV ) card. For more information on setting up or using your Power Macintosh computer, see the setup manual that came with you computer.
033-1009 AV Card Update 4/7/98 7:18 PM Page 2 RCA-type plug If your equipment has a different connector, you can purchase an adapter at an electronics supply store. Connecting Audio Equipment Using the RCA Ports To connect audio equipment using the RCA ports on the AV card, follow the steps below. For instructions on connecting an audio device using the standard sound input and output ports, see the setup manual that came with your computer.
033-1009 AV Card Update 4/7/98 7:18 PM Page 3 Connecting Video Equipment The Power Macintosh AV card provides additional ports for connecting video equipment so that you can view TV and other video images on your computer monitor and store the images on your hard disk. You can also view the Macintosh desktop on a television screen attached to the computer and record images from the desktop to a videocassette recorder ( VCR).
033-1009 AV Card Update 4/7/98 7:18 PM Page 4 Note: The S-video input port is compatible with both seven-pin and four-pin S-video connectors. Important The S-video connector is a round plug with several small metal pins. It resembles other Macintosh connectors, such as those for a printer, modem, mouse, or keyboard. Don’t confuse the connectors; they’re not interchangeable.
033-1009 AV Card Update 4/7/98 7:18 PM Page 5 If the S-video connector doesn’t slide easily into the port, check the pin alignment and try again. Don’t use force, which could damage the computer or cable. 4 Plug the RCA-type connectors on the audio cables into the left and right RCA Audio Out ports on the VCR or camera. 5 Plug the RCA-type connectors on the audio cables into the left and right RCA input ports (-) on the computer.
033-1009 AV Card Update 4/7/98 7:18 PM Page 6 S-video connection for input from a camera - Audio input ports (left and right) S-video Out port Audio Out ports (left and right) æ S-video input port S-video cable Dual RCA-plug cable (available at most electronics supply stores) Composite video connection for input from a camera - Audio input ports (left and right) Video Out port Audio Out ports (left and right) ˜ Composite video input port Triple RCA-plug cable (available at most electronics sup
033-1009 AV Card Update 4/7/98 7:18 PM Page 7 Connecting Video Equipment for Output From the Computer You can connect a VCR to record computer images and audio on videotape. The VCR records what is happening on the computer’s monitor, sounds generated by the computer, and speech spoken into a microphone if one is connected. This capability is useful for creating video presentations or software demonstrations.
033-1009 AV Card Update 4/7/98 7:18 PM Page 8 Depending on whether your equipment has S-video or composite video (RCA-type) ports, your finished connections should look like one of the following: S-video connection for output from the computer - Audio output ports (left and right) Æ S-video output port S-video In port S-video cable Audio In ports (left and right) VCR Dual RCA-plug cable (available at most electronics supply stores) Composite video connection for output from the computer - Audio outp
033-1009 AV Card Update 4/7/98 7:18 PM Page 9 Connecting a Television You can connect to your computer any television that has either an S-video or composite video input port and Audio In ports. The television displays a mirror image of the computer monitor display, and (if the television has speakers) plays the sounds generated by the computer. This capability is especially useful for giving presentations if you have a largescreen television.
033-1009 AV Card Update 4/7/98 7:18 PM Page 10 Television used as a monitor with a composite video connection - Audio output ports (left and right) Video In port Audio In ports (left and right) Â Composite video output port TV Triple RCA-plug cable (available at most electronics supply stores) 2 Turn on the television and the computer. 3 Click the TV Mirroring icon in the Control Strip, and choose Turn TV Mirroring On from the menu that appears.
033-1009 AV Card Update 4/7/98 7:18 PM Page 11 To turn off TV Mirroring, click the TV Mirroring icon in the Control Strip, and choose Turn TV Mirroring Off from the menu that appears. Power Macintosh AV Card Specifications Video Input m m m m m m Type: composite or S-video Standards supported: NTSC, PAL, and SECAM Resolution supported: 320 x 240, which scales to any size up to the size of the monitor Polarity: sync negative Voltage level: 0.7 Vpp minimum, 1.0 Vpp typical, 1.
3-0926.BTO Update 4/7/98 6:45 PM Page 1 Update: About Your Build-To-Order Macintosh Congratulations on purchasing your Macintosh computer. Since you chose the components of your computer, parts of it may differ from what’s described in the manual that came with it. This update addresses the differences and also includes information on additional components not covered in the manual.
3-0926.BTO Update 4/7/98 6:45 PM Page 2 10/100Base-T Ethernet Card Specifications m m m m m m m m m Open Transport: Mac OS 7.5.2 or later, AppleShare, AppleTalk, NetWare for Macintosh, TCP/IP Connector: RJ-45 (for 10Base-T and 100Base-T) Media, 10Base-T: Cat 3, 4, or 5 UTP on 2 pairs up to 100 meters (m) Media, 100Base-T: Cat 5 UTP on 2 pairs up to 100 m Bus interface: PCI revision 2.0 and 2.1, share interrupt A Channel speeds: IEEE Auto Negotiation of 10Base-T and 100Base-T Communications: IEEE 802.
3-0926.BTO Update 4/7/98 6:45 PM Page 3 About the Ultra Wide SCSI Bus Up to three internal devices can be connected to the Ultra Wide SCSI bus on this card. All devices on the same SCSI bus must have unique ID numbers, but devices on different SCSI buses may use the same SCSI ID number. (For example, you could have a removable media drive with ID number 3 connected to the computer’s built-in regular SCSI-1 bus and a hard disk with ID number 3 connected to the Ultra Wide SCSI-3 bus.
3-0926.BTO Update 4/7/98 6:45 PM Page 4 Ultra Wide SCSI Card Specifications m m m m m m m m m m m m m Automatic termination Advanced Data Streaming Technology (ADS) RAID-ready Embedded RISC I/P processor Ultra SCSI connector: Fine pitch 68-pin “P” Flash ROM BIOS PCI 2.1 compliant Large command FIFO Supports disconnect/reconnect Asynchronous I/O support Multiple initiator support SCSI-3 tagged command queuing SCSI Manager 4.
3-0926.BTO Update 4/7/98 6:45 PM Page 5 Using Disk Utilities and Formats With RAID Drive Setup, the disk utility from Apple Computer, should not be used with RAID volumes. You must manage your RAID volumes using the RAID application. Important To set up your RAID volumes to take advantage of Mac OS Extended (HFS Plus) format: 1 Create and set up your RAID volumes using the RAID application. 2 Quit the RAID application and return to the Finder.
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3-0926.BTO Update 4/7/98 6:45 PM Page 7 Apple FireWire Card The optional Apple FireWire Card is designed to work with digital video camcorders and decks that use the DV format and have a FireWire port (sometimes marked IEEE 1394 or DV IN/OUT). The included hardware and software, together with a non-linear editing application, allow you to capture DV movie clips to your hard disk. You can view the clips in MoviePlayer or other QuickTime 3.0 applications, and edit and render the DV movies.
3-0926.BTO Update 4/7/98 6:45 PM Page 8 To connect your Macintosh to a DV camera, plug the 6-pin connector into the Apple FireWire Card and the 4-pin connector into the camera’s DV port. Both of these connectors snap into place when properly engaged. If you want to connect two computers together (or if your device has a 6-pin FireWire port), you can obtain cables through an AV equipment retailer or electronics store.
3-0926.BTO Update 4/7/98 6:45 PM Page 9 DVD-ROM Drive If you chose the DVD-ROM option for your computer, you have a DVD-ROM drive in place of the CD-ROM drive. This type of drive is used in the same way as a CD-ROM drive, but allows you to use a wider range of disc formats: m DVD-ROM m CD-ROM (Modes 1 and 2) m CD-ROM XA (Mode 2, Forms 1 and 2) m CD-I (Mode 2, Forms 1 and 2) m CD-Audio m Photo CD m video CD Disc speeds and capacities vary depending upon the type of disc used.
