K Service Source Power Macintosh G3/Macintosh Server G3 (Blue and White) Power Macintosh G3 (Blue and White), Macintosh Server G3 (Blue and White), Macintosh Server G3 with Mac OS X Server
K Service Source Hot Issues Power Macintosh G3/Macintosh Server G3 (Blue and White)
Hot Issues Introduction - 1 Introduction This chapter is designed to highlight unique or high-priority product issues that you should be aware of before servicing the Power Macintosh G3/Macintosh Server G3 (Blue and White) computer. Note: To avoid confusion with other products called “G3,” Service Source and Price Pages documentation added the words “Blue and White” after the product name.
Hot Issues Processor Module vs. Card - 2 Processor Module vs. Card Whereas previous Power Macintosh computers featured a user-installable processor card, this logic board uses a processor module that must not be removed by the customer (see “Processor Module” in the Take Apart chapter). Processor Module Jumper The Power Macintosh G3/Macintosh Server G3 logic board has a processor module jumper installed at J25.
Hot Issues Warranty Sticker - 3 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. Apple-authorized 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 I/O Card - 4 I/O Card Some I/O functions on the Power Macintosh G3/Macintosh Server G3 logic board are handled through a removable I/O card that must be installed for the computer to operate properly. SDRAM DIMMS The DIMM modules used in any previous Power Macintosh or Power Macintosh G3 computer model are not compatible with the Power Macintosh G3/Macintosh Server G3 (Blue and White) computers described in this manual.
Hot Issues SDRAM DIMMS - 5 Characteristics of the memory to be used in Power Macintosh G3/Macintosh Server G3 (Blue and White) are: • PC-100 SDRAM • 3.3 Volt unbuffered only • 168-pin module • Data width = 64 bits wide • Contains a correctly programmed Serial Presence Detect ROM (256 bytes) • Sizes of 32 MB, 64 MB, 128 MB in 64 Mbit technology are qualified. • Sizes of 128 MB and 256 MB in 128 Mbit technology are qualified. • Maximum DIMM height £ 2.
Hot Issues SDRAM DIMMS - 6 Do not use: • parity SDRAM DIMMs. • ECC (error correcting) SDRAM DIMMs. • registered or buffered SDRAM • DIMMs with fewer than 4 or more than 16 devices (irrespective of any PC-100 sticker or claims) (For more information see “SDRAM DIMMs” in the Basics chapter or refer to the Memory Guide.) “PC-100” is an Intel-driven standard for DIMMs compatible with Intel 100 MHz systems. Intel requires prominent marking of the DIMM as PC-100, and requires the speed code to be listed as well.
Hot Issues SDRAM DIMMS - 7 DIMMs installed in the machine, and set memory timing equal to the slowest DIMM. Therefore, for maximum performance use only 2-2-2 speed codes. However, the difference in application performance between the speed codes is small. Power Macintosh G3/ Macintosh Server G3 (Blue and White) typically ships with a single 3-2-2 DIMM. This may change over time. Power Macintosh G3/Macintosh Server G3 (Blue and White) is not compatible with all defined PC-100 DIMM sizes and organizations.
Hot Issues SDRAM DIMMS - 8 Power Macintosh G3/Macintosh Server G3 (Blue and White). However, there have been some recent efforts to qualify PC100 SDRAM for later versions of G3. Zero MB of memory is soldered to the Power Macintosh G3/ Macintosh Server G3 (Blue and White) main logic board. If the all four of the DIMM slots are empty, the machine will not operate. A single-frequency tone will be generated indicating that no memory is installed. The DRAM DIMMs can be installed one or more at a time.
Hot Issues SGRAM Video Memory - 9 memory configuration will be 1024 Mbytes (1.0 gigabyte). When using 256 MB DIMMs in a Power Macintosh G3/ Macintosh Server G3 (Blue and White), be sure that the device technology that comprises the DIMM is 128 Mbit and not 64 Mbit or 256 Mbit. SGRAM Video Memory The Power Macintosh G3/Macintosh Server G3 (Blue and White) computer does not include built-in video RAM nor a slot for video RAM expansion on the main logic board.
K Service Source Basics Power Macintosh G3/Macintosh Server G3 (Blue and White)
Basics Overview - 1 Overview The Power Macintosh G3 computer is Apple’s leading performance and multiple configuration system for creative content customers. This Power Macintosh G3 provides a fast system architecture supported by improved and faster microprocessors, memory access, PCI bus, and I/O. Click the movie icon at the left to view a QuickTime VR movie of the Power Macintosh G3.
Basics Features - 2 Features There are standard features available with every Power Macintosh G3 computer, as well as configure-to-order features that are optional. The standard and optional features are listed below: • Microprocessor : PowerPC G3 microprocessor running at a clock frequency of 300 MHz, 350 MHz, 400 MHz, or 450 MHz depending on model and configuration. • Cache: 512K or 1 MB of backside second-level (L2) cache on processor module.
Basics Features - 3 • RAM: Four DIMM slots for 168-pin industry standard SDRAM (synchronous dynamic access memory) DIMMs (dual inline memory modules). Maximum memory with all four slots occupied is 1024 MB. • ROM: New World ROM-in-RAM implementation with 1 MB of BootROM. • Graphics acceleration: 2D and 3D hardware graphics acceleration using the ATI RAGE 128 GL graphics controller on the 66 MHz 2D/3D accelerated graphics card.
Basics Features - 4 • Hard drives: Standard Macintosh configurations include one internal Ultra ATA hard drive, or one, two, or three internal Ultra2 LVD SCSI drives. • Expansion bays: Three expansion bays, one of which is occupied by an Ultra DMA/33 hard drive or one Ultra2 LVD SCSI drive. Two bays are available for adding other devices connected to a PCI controller card. • CD-ROM drive: Internal 24x or 32x ATAPI CD-ROM drive.
Basics Features - 5 • Zip drive: Optional 100 MB ATAPI Zip drive. If the Zip drive option is not installed at the time of purchase, data and power connectors are provided to add an ATAPI Zip drive to the system. A bezel for the Zip configuration will need to be installed. The Zip device should be deviceselect jumpered as Device 1. • USB ports: The computer comes with two USB ports, a USB mouse, and a USB keyboard that has two additional USB ports.
Basics Features - 6 • Keyboard: Apple USB keyboard with function keys and inverted-T cursor motion keys. It is also a bus-powered USB hub with two USB ports. • Mouse: Apple USB mouse operating as a low-speed (1.5 Mbps) USB device. • PCI card expansion slots: Three slots for 33 MHz, 32-bit or 64-bit, up to a 12-inch PCI card; one slot for a 66 MHz 32-bit PCI card, normally occupied by the accelerated graphics card. • Power switch: Soft power controlled from the Apple USB keyboard and front power button.
Basics Features - 7 • Fan speed control: The speed of the fan is thermally controlled and is automatically set to the lowest possible speed to minimize noise. The fan speed varies according to the temperature inside the enclosure. This is a function provided by the fan, and is not under software control. • Energy saving: Sleep, startup, and shutdown scheduling can be controlled with an Energy Saver control panel.
Basics Configure-to-Order - 8 Configure-to-Order The build-to-order options that follow are available from the Apple Store. For more information view the build-toorder options online at the following address: http:// store.apple.com.
Basics Front and Rear View - 9 Front and Rear View
Basics Right Side View - 10 Right Side View
Basics Left Side View - 11 Left Side View
Basics Internal Locator - 12 Internal Locator Power Supply CD-ROM/DVD-ROM Drive Bay Zip Drive (optional) Fan Drive Bay 1 Drive Bay 2 Drive Bay 3 Monitor Card Logic Board
Basics I/O Panel/Rear View - 13 I/O Panel/Rear View FireWire Ports (2) Lockable Cover Latch (ADB) Port Ethernet Port (10/100 Twisted-pair) Internal Modem Card (optional) USB Ports (2) Monitor Port (PCI Slot 1 or 2) Sound Input Port Expansion Slots (PCI slots 2-4) Sound Output Port Lock Down Location
Basics Logic Board Diagram - 14 Logic Board Diagram Monitor Card Slot Sound In & Sound Out Ports USB Ports A&B PCI Slots Ethernet Connector ADB Firewire Ports (2) J1 IDE Modem Connector J15 Ultra2 ATA J23 Power S5 Power Button S4 Cuda Button SDRAM DIMM Slots VOID Warrenty Seal if Broken Battery J8 CD Audio J31 Processor J34 J25 Front Panel Plug-In Speaker Jumper Block Board Slot (w/sticker) J2 Firewire Power
Basics RAM Expansion - 15 RAM Expansion The Power Macintosh G3 logic board provides four PC-100 DIMM slots, supporting a maximum of 256 MB per DIMM, for a total of 1 GB. Compatible DRAM DIMMs must meet all the following specifications: • PC-100 Synchronous DRAM (SDRAM) • 3.3 volt • 64-bit wide, 168-pin module • maximum of 16 memory devices on the DIMM • unbuffered; do not use registered or buffered Synchronous DRAM (SDRAM) • maximum height of 2.
Basics RAM Expansion - 16 Note: Zero MB of memory is soldered to the Power Macintosh G3 logic board. If all four of the DIMM slots are empty, the machine will not operate. A single-frequency tone will be generated indicating that no memory is installed. No Video RAM Expansion The Power Macintosh G3 computer does not include built-in video RAM nor a slot for video RAM expansion on the main logic board.
Basics RAM Expansion - 17 No L2 Cache Expansion The back-side L2 cache is integrated into the design of the microprocessor module. No cache expansion is possible without replacing the entire module.
Basics DVD-ROM and DVD MPEG2 Decode Card Module - 18 DVD-ROM and DVD MPEG2 Decode Card Module The DVD-ROM drive configuration includes an DVD MPEG2 decode card module. The DVD MPEG2 decode card module supports viewing DVD video movies on a monitor connected to the 15-pin video output port on the PCI 2D/3D accelerated graphics card.
Basics Peripheral Component Interconnect (PCI) - 19 Peripheral Component Interconnect (PCI) The Power Macintosh G3 computer includes four PCI expansion slots. Three of the slots are 5V, 64-bit, 33 MHz slots that support both 32-bit and 64-bit PCI cards that are compliant with the PCI V2.1 specification. The other slot, is a 3.3V, 32-bit, 66 MHz slot dedicated to a 2D/3D accelerated graphics card. The 66 MHz PCI slot conforms to the PCI V2.
Basics Peripheral Component Interconnect (PCI) - 20 Expansion Card Power Requirements The combined power consumption of expansion cards must not exceed the limits specified for the Macintosh model. To avoid damaging the computer and expansion card, do not install any expansion card without first checking the documentation for that card.
Basics Drives Installed - 21 Drives Installed There are five internal drive bays. Three are in the lower part of the computer and two are in front on top. In many configurations, a single hard drive is installed in the lower part of the computer, and a CD-ROM, DVD-ROM, or DVD-RAM drive and Zip drive fill the upper bays. The computer supports additional drives, which fit in the lower part of the computer.
Basics Drives Installed - 22 The computer provides support for the following types of internal hard drives: • ATA devices (includes ATA, ATA-2, and ATA-3 devices, which are also called IDE or EIDE devices) • Ultra ATA devices (sometimes called ATA-4 devices) • Fast SCSI (with the PCI card) • Ultra SCSI (with the PCI card) • Standard SCSI (with the PCI card) • Wide Ultra SCSI devices (with the PCI card included in some configurations) • Ultra2 LVD SCSI devices (with the PCI card included in some configurati
Basics Drives Installed - 23 Ultra ATA Drives The Power Macintosh G3/Macintosh Server G3 (Blue and White) can accommodate either one or two internal Ultra ATA drives in the lower part of the computer, drive bay 3. (The U-shaped carrier, available for version 2 enclosures, allows installation of two ATA drives, stacked vertically.
Basics Drives Installed - 24 installed in the lower part of the computer in drive bay 1, near the front of the computer. If it came with two drives, the second one is installed in drive bay 2. If a third drive is installed, it’s in drive bay 3. The factory sets the drive in bay 1 to start up. The startup drive can be changed in the control panel. Additional internal Ultra2 LVD SCSI devices connect to the data cable supporting the drive that came with the computer.
Basics Drives Installed - 25 Other Types of SCSI Drives The SCSI card inside the Power Macintosh G3 supports other types of Wide Ultra SCSI drives, as well as Ultra2 LVD SCSI devices. However, if you mix the different kinds, the system will operate at the speed of the slowest device. If you want optimal performance using the card, use only Ultra2 LVD SCSI devices. To maintain optimal performance using another kind of SCSI device, add a PCI card that supports the device.
Basics Drives Installed - 26 ATAPI CD-ROM Drive The Power Macintosh G3 computer has a 24x- or 32x-speed internal ATAPI CD-ROM drive. The CD-ROM drive supports the worldwide standards and specifications for CD-ROM and CD-digital audio discs described in the Sony/Philips Yellow Book and Red Book. The drive can read CD-ROM, CD-ROM XA, CD-I, and PhotoCD discs as well as play audio discs. The CD-ROM drive has a sliding tray to hold the disc.
Basics Drives Installed - 27 Optional ATAPI Zip Drive The Zip drive is an ATAPI drive and is connected as device 1 (slave) in an ATA Device 0/1 (master/slave) configuration on the ATA-3 channel of the main logic board. Optional DVD-ROM Drive The optional DVD-ROM drive is fully compatible with existing CD-ROM media. The drive supports CD-ROM at 32x speed maximum and DVD at 5x constant linear velocity (CLV).
Basics I/O Ports - 28 I/O Ports ADB Port The Power Macintosh G3 computer has an Apple Desktop Bus (ADB) port for ADB devices and ColorSync control of Apple monitors. The ADB port is functionally the same as on other Macintosh computers. USB Ports The Power Macintosh G3 computer has two Universal Serial Bus (USB) ports that are used to connect the keyboard and mouse as well as additional I/O devices such as printers, scanners, and low-speed storage devices.
Basics I/O Ports - 29 mouse similar to the USB keyboard and mouse introduced with the iMac computer. Keyboard The computer comes with an Apple USB keyboard. An extension cable is provided for installations where the computer is located on the floor or away from the immediate desktop area. Mouse The Apple USB mouse is designed to work with the computer by way of the USB ports. The mouse case is round and has the same two-tone color design as the case of the computer.
Basics I/O Ports - 30 FireWire Ports The computer includes two external FireWire IEEE 1394 ports on the rear panel of the enclosure. The features of the FireWire ports are: • high-speed serial I/O supports 100, 200, and 400 Mbps (megabits per second) • provide 15 watts of power when the computer system is on • accepts external power input on FireWire bus when system is off No SCSI Ports The Power Macintosh G3 computer does not include built-in internal or external SCSI device connectors.
Basics I/O Ports - 31 Ethernet Port The Power Macintosh G3 computer has a built-in 10/100 Mbps Ethernet port. The user can connect it to either a 10Base-T or a 100Base-TX hub; the port will automatically recognize which type of hub is connected. The connector for the Ethernet port is a an RJ-45 connector on the back of the computer. The Ethernet interface in the Power Macintosh G3 computer conforms to the ISO/IEC 802.3 specification, where applicable.
Basics Internal Modem - 32 Internal Modem The Power Macintosh G3 computer includes an option for an internal modem. The modem interface to the main logic board is a 70-pin connector. The external I/O connector for the modem is an RJ-11 connector located on the rear of the computer. The modem has the following features: • modem bit rates up to 56 Kbps (supports K56flex and V.90 modem standards) • fax modem bit rates up to 14.
Basics Sound - 33 Sound The Power Macintosh G3 is not configured as a typical AVstyle Power Macintosh in that it does not have RCA jacks for sound in and out, nor additional video in and out ports. Instead is relies on external FireWire devices for providing advanced audio/video capabilities. Sound System The sound system for the Power Macintosh G3 computer supports 44.1 kHz 16-bit stereo sound output and input, available simultaneously.
Basics Sound - 34 output jack. The Power Macintosh G3 computer also records sound from several sources: an analog sound source connected to the line-level sound input jack, analog sound from the modem card connected to the internal modem connector, or a compact disc in the CD-ROM player. With each sound input source, sound playthrough can be enabled or disabled. Sound Output The Power Macintosh G3 computer provides one 3.5-mm mini jack for sound output on the back of the enclosure.
Basics Sound - 35 The Burgundy IC provides the stereo sound output to both the internal speakers and the sound output jack.
Basics Sound - 36 Note: The Apple PlainTalk microphone requires power from the main computer, which it obtains by way of an extra-long, 4-conductor plug that makes contact with a 5-volt pin inside the sound input jack. The sound input jack has the following electrical characteristics: • input impedance: 20 kW • maximum input level without distortion: 2.5 V peak to peak (Vpp) maximum • line-level microphone voltage range of 0.28 V to 2.
Basics Sound - 37 Digitizing Sound The sound circuitry digitizes and records sound as 44.1 kHz 16-bit samples. If a sound sampled at a lower rate on another computer is played as output, the Sound Manager transparently upsamples the sound to 44.1 kHz prior to outputting the audio to the Burgundy sound IC. The preferred sound sampling rate for output is specified in the Monitors and Sound control panel when the sound input is not in use.
Basics - 38 The Burgundy IC provides separate sound buffers for input and for stereo output so that the computer can record and send digitized sound to the sound outputs simultaneously.
Basics The Cuda Chip - 39 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. (The Cuda reset button (S4) is near the battery.
Basics Resetting the Logic Board - 40 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 - 41 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 Voltage Switch - 42 Voltage Switch The power supply is not self-configuring for different input voltages. The voltage switch is delivered preconfigured for the input voltage of the region in which the unit is originally purchased. If the computer is moved to another location where the input voltage is different, a voltage switch must be adjusted to accommodate the voltage change. The switch has two positions that support voltage ranges of 100 to 130 V or 220 to 270 V.
Basics Repair Strategy - 43 Repair Strategy Service the Power Macintosh G3/Macintosh Server G3 (Blue and White) 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 - 44 White) and Macintosh Server G3 (Blue and White) “Service Price Pages.” 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 - 45 For US inquiries, please call Service Provider Support at 800-919-2775 and select option #1. Canadian Ordering Canadian Service providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada (800-903-5284). For Canadian inquiries, please call Service Provider Support at 905-513-5782 and select option #3.
Basics Warranty/AppleCare/ARIS - 46 Warranty/AppleCare/ARIS US Only 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 Power Macintosh G3 computers are covered under AppleCare.
K Service Source Specifications Power Macintosh G3 / Macintosh Server G3 (Blue and White)
Specifications Introduction - 1 Introduction Specifications information for this product can be found in the Spec Database, which you can access at Service Source Online (http://service.info.apple.com) or on Service Source CD. Spec Database at Service Source Online From the Service Source Online home page, click Troubleshoot and Repair to access the main repair procedures page.
Specifications Hard Drive Specifications 6 GB - 5400 rpm drive Typical Seek Times: 2 ms Average: <10 ms Track-to-Track: 2 ms Full Stroke: 20 ms Average Rotational Latency: 5.56 ms Rotational Speed: 5400 rpm Internal Data Rate: up to 132 MB/s Data Transfer Rates (Buffer-to-Host) ATA PIO Mode 4: 16.6 MB/sec DMA Mode 2: 16.6 MB/sec Ultra DMA/33: 33.
Specifications Ultra SCSI-3: 20 MB/s Buffer Size: 128 KB Typical Power On to Drive Ready: 15 s 12G - 5400 rpm drive Typical Seek Times: 2 ms Average: 9.5 ms Track-to-Track: 2 ms Full Stroke: 18 ms Average Rotational Latency: 5.
Specifications Hard Drive Specifications - 4 Data Transfer Rates (Buffer-to-Host) ATA Ultra DMA/33: 33.3 MB/s PIO Mode 4: 16.6 MB/s DMA Mode 2: 16.6 MB/s Buffer Size (Ultra ATA): 512 MB Typical Power On to Drive Ready: 9.5 s 9 GB SCSI Drives IBM Hard Drives - DDRS - 34560 / 39130 DDRS - 34560 / 39130 7200 rpm drive Data buffer (read, look ahead buffer, write cache): 512 KB (see note 2) Rotational speed: 7200 RPM Latency (average): 4.17 ms Media transfer rate: 108.6 to 171.
Specifications Hard Drive Specifications - 5 Interface transfer rate (SCSI max): 20 MB/s, 40 MB/s, and 80 MB/s (see note 3) Minimum sustained data rate: 8.3 to 13.3 MB/s and 8.4 to 13.4 MB/s Seek time (typical read) Average: 7.5 ms Track-to-track: 0.8 ms Full track: 15.0 ms 10,000 rpm drive Media data rate (banded): 187.2 to 243.7 Mbps Internal formatted transfer rate 17.5 to 23.3 MB/s Interface transfer rate (max): 80 MB/s, 160 MB/s, 200 MB/s Access times (pop. avg.) Average read: 5.3/6.
Specifications Hard Drive Specifications - 6 Configuration Interface Fast, Fast Wide, SCA-2, SCSI-3 (ULTRA) Fast & Wide, SCA-2, ULTRA-2 SCSI Formatted capacity (512 bytes): 9.1 GB Number of disks: 5 Number of heads: 10 Areal density (maximum): 1.56 Gbit/sq. inch Recording density (maximum): 156 KB/sq.
Specifications Hard Drive Specifications - 7 Latency (average): 4.17 ms Media transfer rate: 108.6 to 171.1 Mbps Interface transfer rate (SCSI max) 20 MB/s, 40 MB/s, 80 MB/s (see note 3) Minimum sustained data rate: 8.3 to 13.3 MB/s, 8.4 to 13.4 MB/s Seek time (typical read) Average: 7.5 ms Track-to-track: 0.8 ms Full track: 15.0 ms Reliability Non recoverable read errors: < 10 in 10E14 bits read PFA/S.M.A.R.T.: Yes Power Startup current (average) 0.27 A (5 V), 2.00 A (12 V) Idle (average) 5.3 to 7.
Specifications Power consumption Efficiency index 0.0012 to 0.0008 W/MB (see note 4) Physical dimensions Height: 25.4 mm Width: 101.6 mm Depth: 146.0 mm Mass (max.): 630 g Environmental characteristics Operating Temperature: 5° to 55° C Relative humidity (non condensing): 8 to 90 percent Shock (half-sine wave): 10 G (11 ms), 65 G (2 ms) Vibration (random) horizontal: 0.67 G (5 to 500 Hz) Vibration (random) vertical: 0.
Specifications Hard Drive Specifications - 9 Non-Operating Temperature: 0° to 65° C Relative humidity (non condensing): 5 to 95 percent Shock (half-sine wave): 75 G (11 ms), 175 G (2 ms) Vibration (random) horizontal: 1.04 G (2 to 200 Hz) Vibration (random) vertical: 1.04 G (2 to 200 Hz) Notes 1. MB = 1,000,000 Bytes; 1 GB = 1,000,000,000 Bytes 2. Upper 128 KB used for firmware 3. 40 MB/s represents SCSI-3 Fast-20 and Wide 4.
K Service Source Take Apart Power Macintosh G3/Macintosh Server G3 (Blue and White)
Take Apart - 1 Tools • Flatblade screwdriver • Phillips screwdriver • Allen wrench (2.
Take Apart Opening the Computer - 2 Opening the Computer No preliminary steps are required before you begin this procedure.
Take Apart Opening the Computer - 3 1 2 Lift the latch to unlock the right side panel. Note: Make sure security bar is in the unlock position. Gently lower the side panel onto a clean, ESDsafe mat, to avoid scratching the case. Lower the side panel until it lies flat.
Take Apart Logic Board - 4 Logic Board Before you begin, open the side access panel and remove the following: • PCI cards (if present) • video card • FireWire board (if present) • modem (if present)
Take Apart Logic Board - 5 1 2 Disconnect all the cables from the logic board. Using a Phillips screwdriver, remove the logic board mounting screws and standoff that attaches to the FireWire board (if present).
Take Apart Logic Board - 6 3 4 Tilt the logic board so that the ports clear the openings in the I/O panel. Lift the board out of the computer. Important: If you are replacing the logic board, you must transfer the processor module, processor jumper, and DRAM from the original logic board to the replacement board. See the Take Apart instructions for the “Processor Module” for more information.
Take Apart Logic Board - 7 also cover the processor 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. Note: Before returning the logic board to Apple, remove the processor module, processor jumper block and warranty sticker, DRAM, the Video I/O card, and any PCI cards (if present).
Take Apart Hard Drive, IDE /ATA - 8 Hard Drive, IDE / ATA Before you begin, open the side access panel. Note: This computer can accommodate either one or two internal Ultra ATA drives in the lower part of the computer, drive bay 3. (The U-shaped carrier, available for version 2 enclosures, allows installation of two ATA drives, stacked vertically.
Take Apart Hard Drive, IDE /ATA - 9 Hard Drive Carriers: Version 1 and Version 2 (Flat and U-shaped) Power Macintosh G3/Macintosh Server G3 computers use three different hard drive carriers for installing drives in the lower part of the unit. The version 1 carrier extends the width of the computer and holds up to three drives. The version 2 flat carrier is the width of a single drive; up to three carriers can be installed in the computer.
Take Apart Hard Drive, IDE /ATA - 10 Version 1 1 l 2 3 4 Disconnect the main power cable and the Ultra ATA hard drive data cable from the logic board. Disconnect the hard drive power cable (P3) from the back of the hard drive in bay 3. Remove the screw securing the retainer to the hard drive carrier. Remove the hard drive retainer.
Take Apart Hard Drive, IDE /ATA - 11 5 Slide the carrier toward the rear of the computer to unhook the carrier tabs from the chassis slots. Lift the carrier and drive out of the chassis.
Take Apart Hard Drive, IDE /ATA - 12 6 7 Remove the four screws from the underside of the hard drive carrier. Lift the hard drive off the carrier. Note: Return drives without cables or carriers. Exchange Apple hard drive modules in Apple packaging. Failure to comply with this requirement may result in a packaging noncompliance charge. Refer to the parts database for more information.
Take Apart Hard Drive, IDE /ATA - 13 Version 2 Note: The procedure illustrated here shows a drive attached to the version 2 flat carrier. The procedure is similar for removing drives attached to a version 2 Ushaped carrier. See the Replacement Notes at the end of this topic for additional steps related to the Ushaped carrier. 1 Disconnect the Ultra ATA hard drive data cable and the hard drive power cable (P3) from the hard drive.
Take Apart Hard Drive, IDE /ATA - 14 2 Remove the hard drive carrier mounting screw.
Take Apart Hard Drive, IDE /ATA - 15 3 4 Pull the drive carrier back and lift up at an angle to release the carrier tabs from the slots in the chassis. Remove the carrier and drive from the computer.
Take Apart Hard Drive, IDE /ATA - 16 5 6 If you’re returning the drive to Apple, remove the screws that mount the hard drive to the carrier. Lift the hard drive from the carrier. Note: Return drives without cables or carriers. Exchange Apple hard drive modules in Apple packaging. Failure to comply with this requirement may result in a packaging noncompliance charge. Refer to the service parts database for more information.
Take Apart Hard Drive, IDE /ATA - 17 Replacement Note: To install two drives in the version 2 U-shaped carrier, install the first drive in the bottom of the carrier. Then place the second drive in the carrier’s upper bay and attach screws through the sides of the carrier into the sides of the drive. Note that tightening screws on the left side of the carrier bends the arms of the carrier into the drive, holding it securely.
Take Apart Hard Drive, IDE /ATA - 18 Replacement Note: When reconnecting a dual-drive ATA cable to drives installed in a U-shaped carrier, be sure to attach the end connector to the drive in the bottom of the carrier.
Take Apart Hard Drive, Ultra2 LVD SCSI - 19 Hard Drive, Ultra2 LVD SCSI Before you begin, open the right side access panel. Note: If the unit has at least one internal Ultra2 LVD SCSI drive, an Ultra2 LVD SCSI PCI card, and a data cable inside the computer, you can connect additional internal and external Ultra2 LVD SCSI devices.
Take Apart Hard Drive, Ultra2 LVD SCSI - 20 terminator so you don’t need to add one. You can connect external Ultra2 LVD SCSI devices to the port on the rear of the computer. If the computer came with one Ultra2 LVD SCSI drive, it is installed in the lower part of the computer in drive bay 1, near the front of the computer. If it came with two drives, the second one is installed in bay 2. If a third drive is installed, it’s in bay 3. Usually the computer uses the drive in bay 1 to start up.
Take Apart Hard Drive, Ultra2 LVD SCSI - 21 Drive Front Pin 1 Jumper SCSI ID = 0 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 You must assign a SCSI ID number to every additional device and the number must not conflict with the ID number already assigned to a drive on the SCSI chain. One factory-installed drive has ID 0; a second factoryinstalled drive has ID 1; a third drive has ID 2. The SCSI PCI card has ID 7. See the illustration for placing the jumper for ID 1 and 2.
Take Apart Hard Drive, Ultra2 LVD SCSI - 22 Hard Drive Carriers: Version 1 and Version 2 (Flat and U-shaped) Power Macintosh G3/Macintosh Server G3 computers use three different hard drive carriers for installing drives in the lower part of the unit. The version 1 carrier extends the width of the computer and holds up to three drives. The version 2 flat carrier is the width of a single drive; up to three carriers can be installed in the computer.
Take Apart Hard Drive, Ultra2 LVD SCSI - 23 Version 1 1 Disconnect the Ultra2 SCSI data cable from the Ultra2 SCSI card.
Take Apart Hard Drive, Ultra2 LVD SCSI - 24 2 3 4 Disconnect the main power cable and the SCSI hard drive power cable (P5). Replacement Note: The power cables attach to drives as follows: P5 attaches to bay 1 P2 attaches to bay 2 P3 attaches to bay 3 Remove the screw on the hard drive retainer. Remove the hard drive retainer.
Take Apart Hard Drive, Ultra2 LVD SCSI - 25 5 Pull the hard drive carrier toward the rear of the computer to unhook the carrier from the chassis.
Take Apart Hard Drive, Ultra2 LVD SCSI - 26 6 7 8 Lift the carrier and drive out of the chassis. Remove the SCSI data cable and terminator (black plastic housing) from the top of the SCSI drive in bay 1. The SCSI cable and terminator are attached to the top of the drive with double-stick foam tape. Disconnect the SCSI cable from the back of the SCSI drive(s).
Take Apart Hard Drive, Ultra2 LVD SCSI - 27 9 If you’re returning the drive to Apple, remove the four screws from the hard drive carrier. 10 Lift the hard drive from the carrier. Note: Return drives without cables or carriers. Exchange Apple hard drive modules in Apple packaging. Failure to comply with this requirement may result in a packaging noncompliance charge. Refer to the service parts database for more information.
Take Apart Hard Drive, Ultra2 LVD SCSI - 28 Version 1 Carrier Replacement 1 2 3 Make sure any cables underneath the hard drive carrier are lying flat in place. Install the drive carrier in the computer. Align the carrier tabs on the front of the carrier with the chassis slots. Push down and forward on the carrier as you slide it into the slots until the pin locks into position.
Take Apart Hard Drive, Ultra2 LVD SCSI - 29 4 5 Install the hard drive retainer and screw into place. Connect all cables to the hard drive(s).
Take Apart Hard Drive, Ultra2 LVD SCSI - 30 Version 2 Note: The procedure illustrated here shows a drive attached to the version 2 flat carrier. The procedure is similar for removing drives attached to a version 2 Ushaped carrier, except that the U-shaped carrier is installed only in drive bay 3. See the Replacement Note at the end of this topic for additional steps related to the U-shaped carrier. 1 Disconnect the Ultra2 LVD SCSI cable from the Ultra2 LVD SCSI card.
Take Apart Hard Drive, Ultra2 LVD SCSI - 31 2 Disconnect the SCSI hard drive power cable (P5). Caution: Pull the SCSI power cable straight out of the connector on the drive. Any up or down motion to the connector could damage the drive. 3 Replacement Note: The power cables attach to drives as follows: P5 attaches to bay 1 P2 attaches to bay 2 P3 attaches to bay 3 Disconnect the Ultra2 LVD SCSI data cable from the hard drive.
Take Apart Hard Drive, Ultra2 LVD SCSI - 32 4 Remove the hard drive carrier mounting screw.
Take Apart Hard Drive, Ultra2 LVD SCSI - 33 5 6 Pull the drive carrier back and lift up at an angle to release the carrier tabs from the slots in the chassis. Remove the carrier and drive from the computer.
Take Apart Hard Drive, Ultra2 LVD SCSI - 34 7 If you’re returning the drive to Apple, remove the SCSI data cable and terminator (black plastic housing) from the top of the drive. The cable and terminator are attached to the drive with double-stick foam tape.
Take Apart Hard Drive, Ultra2 LVD SCSI - 35 8 9 If you’re returning the drive to Apple, remove the four screws from the hard drive carrier. Lift the hard drive from the carrier. Note: Return drives without cables or carriers. Exchange Apple hard drive modules in Apple packaging. Failure to comply with this requirement may reslut in a packaging noncompliance charge. Refer to the service parts database for more information.
Take Apart Hard Drive, Ultra2 LVD SCSI - 36 10 If you’re replacing the thermal pad on the drive, remove the old pad and apply the new pad to the same area on the drive. Important: Before installing a new 36 GB Ultra2 LVD SCSI IBM drive, you must apply a thermal pad in the area illustrated. Replacement Note: To install two drives in the version 2 U-shaped carrier, install the first drive in the bottom of the carrier.
Take Apart Hard Drive, Ultra2 LVD SCSI - 37 the second drive in the carrier’s upper bay and attach screws through the sides of the carrier into the sides of the drive. Note that tightening screws on the left side of the carrier bends the arms of the carrier into the drive, holding it securely.
Take Apart Carrier Support Plate - 38 Carrier Support Plate Note: Perform this procedure only on units with a version 2 chassis and only if you must replace the support plate or the cables below the plate.
Take Apart Carrier Support Plate - 39 1 Remove the two support plate mounting screws from the bottom of the unit.
Take Apart Carrier Support Plate - 40 2 Lift the plate at an angle and remove it from the computer.
Take Apart Video Card and DVD Decoder Module - 41 Video Card and DVD Decoder Module Before you begin, do the following: • Open the side access panel. • Remove the external video cable. Note: The video card is always installed in the short PCI slot, slot 1. The slot numbers are stamped on the rear access I/O panel.
Take Apart Video Card and DVD Decoder Module - 42 1 If a DVD decoder module is installed and you are replacing it, remove the module by pulling it straight off the card.
Take Apart Video Card and DVD Decoder Module - 43 2 3 Remove the video card mounting screw. Gently lift up on the video card to remove it from the PCI slot.
Take Apart Ultra2 LVD SCSI Card - 44 Ultra2 LVD SCSI Card Before you begin, open the side access panel.
Take Apart Ultra2 LVD SCSI Card - 45 1 2 3 Remove the Ultra2 LVD SCSI card mounting screw. Disconnect the Ultra2 LVD SCSI cable from the PCI card. Note: Make sure no other cable is attached (externally, or on the second internal connector if using the dual channel SCSI PCI card). Gently lift up on the Ultra2 LVD SCSI card to remove it from the PCI slot.
Take Apart FireWire Board - 46 FireWire Board Before you begin, open the side access panel.
Take Apart FireWire Board - 47 1 2 3 4 Remove the screw securing the FireWire board to the I/O panel. Remove the screw that secures the FireWire board to the metal standoff. Disconnect the FireWire cable, the short 3-pin cable from the back of the FireWire board or logic board. Gently lift up the FireWire board to remove it from the logic board connector.
Take Apart Modem - 48 Modem Before you begin, open the side access panel. Note: The modem is a buildto-order option or upgrade kit. If you’re installing a modem upgrade kit, refer to the “Modem Installation” section in the Upgrades chapter. If you are removing or replacing a faulty modem, continue with these procedures.
Take Apart Modem - 49 1 2 Remove the screw (located next to the modem port) that secures the modem to the I/O panel. Remove the screw that secures the modem leg standoff to the logic board.
Take Apart Modem - 50 3 4 Carefully disconnect the flexible modem cable from the logic board. Important: The modem cable is very fragile. Gently lift up the modem, to remove it from the logic board. Note: If the modem is being replaced, continue with the Take Apart procedures to remove the modem from the bottom modem shield.
Take Apart Modem - 51 5 6 With a jeweler’s screwdriver, pry the metal tabs up on the top shield. Carefully disconnect the flexible modem cable from the modem board.
Take Apart Modem - 52 7 Remove the screw securing the modem to the bottom shield.
Take Apart Modem - 53 8 Note: There are two tiny metal tabs on the inside of the bottom shield. The modem rests on these tabs so the modem does not make contact with the bottom shield. With a needlenose pliers, pinch the tiny metal tabs flat so the modem board can be removed from the bottom shield.
Take Apart Modem - 54 9. Carefully spread the sides of the bottom shield out just enough so the modem clears the tabs, and starts to fall out of the bottom shield. 10. Carefully remove the modem from the bottom shield. Replacement Note: After replacing an international modem, use the Modem Country Selector utility to set the modem to the correct country.
Take Apart Processor Module - 55 Processor Module Before you begin, open the side access panel.
Take Apart Processor Module - 56 1 Remove the screw that attaches the heatsink ground cable to the logic board. Replacement Note: If the heatsink has a braided cable, before reattaching it, push the two ends together to flex it. Then arrange the cable so that the crimps in each end are at right angles to each other, with the crimp in the chassis end of the cable pointing at the I/O end of the logic board.
Take Apart Processor Module - 57 The heatsink may be hot to the touch. ±Warning: 2 3 While pressing down on the top of the heatsink clip, use a small flatblade screwdriver to lift up and out on the front tab of the clip to release the heatsink clip. Remove heatsink clip.
Take Apart Processor Module - 58 4 Lift the heatsink off of the processor module.
Take Apart Processor Module - 59 5 Lift the lever to release the processor module.
Take Apart Processor Module - 60 6 Handle the processor by the edges and gently lift it straight up to remove. 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.
Take Apart Processor Module - 61 7 Remove the warranty sticker and jumper block if replacing the logic board only. yellow jumper:450 MHz white jumper: 400 MHz blue jumper: 350 MHz black jumper: 300 MHz Caution: When removing the jumper, be sure not to leave its inner metal clips on the old jumper connector. If the clips are left behind, install a new jumper on the new board. If you use a jumper without clips, the unit could fail to start up.
Take Apart Processor Module - 62 Important: When replacing the processor module, you must change the processor jumper block and warranty sticker to be compatible with the new processor module. 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 - 63 8 Processor Jumper Block 350MHz MHz 400 400MHz MHz 450 MHz 300 300MHz MHz 350 Blue Blue White White Yellow Black Black Install the jumper as shown. Be sure to cover the pins as shown and to install the jumper block with the gold connector pins facing toward the board. Replacement Note: Position the processor module over the slot, seat it evenly, and press down gently on the module to install it. Never use force or you may damage the connector pins on the underside.
Take Apart Processor Module - 64 Install a gap filler on a new processor. Caution: On modules with capacitors, make sure all capacitors show through the opening in the gap filler. Replace the heatsink, insert the clip onto the tab at the rear of the module, swing the clip over the heatsink, and secure the front latch.
Take Apart SDRAM DIMM - 65 SDRAM DIMM Before you begin, open the side access panel.
Take Apart SDRAM DIMM - 66 1 2 Push down on the connector clips to unlock the DIMM. Lift the memory module out of the slot.
Take Apart CD-ROM/DVD-ROM/DVD-RAM/Zip Drive Bezel - 67 CD-ROM/DVDROM/DVD-RAM/ Zip Drive Bezel Before you begin, open the side access panel.
Take Apart CD-ROM/DVD-ROM/DVD-RAM/Zip Drive Bezel - 68 1 2 From inside of the chassis, behind the front panel, push the two bezel tabs forward to release the drive bezel from the front panel. Disconnect the bezel from the hinge on the front left side to remove the bezel from the computer.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 69 CD-ROM, DVDROM, or DVDRAM Drive Before you begin, do the following: • Open the side access panel. • Remove the CD-ROM/ DVD-ROM/DVD-RAM/Zip drive bezel.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 70 1 Remove the two screws on the drive carrier. The drive carrier is removed from the computer as a unit. The drives are attached to the carrier.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 71 2 3 4 From inside the chassis, push the drive carrier forward about one inch.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 72 5 6 Continue sliding the drive carrier out of the computer. Important: The drive carrier may be difficult to push forward due to the EMI gasket and tape located on the underside of the carrier (directly below the Zip drive). When the carrier is out of the computer, remove the EMI shield from the back of the CD-ROM, DVD-ROM, or DVD-RAM drive.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 73 Note: Perform the following procedure if you are replacing the CD-ROM, DVD-ROM, DVD-RAM, or Zip drive. 7 8 Using a Phillips screwdriver, remove the four drive carrier mounting screws. Slide the drive(s) out of the carrier. Replacement Note: The DVD-RAM drive is not as tall as the CD-ROM and DVD-ROM drives.
Take Apart CD-ROM, DVD-ROM, or DVD-RAM Drive - 74 drive back into the carrier, lift the back of the drive slightly so that the drive is flush against the carrier. Replacement Note: When inserting the drive carrier into the computer, make sure the carrier tab slides into the hole on the stationary drive shelf.
Take Apart Zip Drive - 75 Zip Drive If removing the Zip drive, follow the procedures for removing the CD-ROM or DVD-ROM Drive. Important: The Zip/CD-ROM drive carrier may be difficult to push forward after removing the screws on the bezel. The EMI gasket/tape on the underside of the drive carrier (directly below the ZIP drive), holds the carrier securely in place. Continue pushing forward until the carrier is released.
Take Apart Fan - 76 Fan Before you begin, open the side access panel.
Take Apart Fan - 77 1 2 3 Remove the two screws on the fan bracket. Pull the fan bracket down to access the power-to-fan connector. Disconnect the powerto-fan connector.
Take Apart Fan - 78 4 Lift fan bracket out of the computer. Replacement Note: The fan bracket has two holes (on the top) that join with two tabs on the chassis. If the tabs aren’t inserted in the holes, the screws that secure the fan bracket to the chassis won’t align properly.
Take Apart Fan - 79 Perform the following procedure only if you are replacing the fan. 5 6 Using a Phillips screwdriver, remove the four screws securing the fan to the fan bracket. Lift the fan from the fan bracket.
Take Apart Power Supply - 80 Power Supply Before you begin, do the following: • Open the side access panel. • Remove the CD/DVDROM/Zip bezel. • Move the CD/DVD-ROM/ Zip drive carrier forward 1 inch.
Take Apart Power Supply - 81 1 Disconnect the following power cables: • cables P6 and P7, going to the CD-ROM/ Zip drive • cable P4 going to the front panel board • main power cable going to the logic board • cable(s) to other hard drives (if present)
Take Apart Power Supply - 82 2 Using a 2.5 mm allen wrench, remove the three screws on the rear vented panel.
Take Apart Power Supply - 83 3 4 On the inside of the chassis, remove the screw that attaches the power supply to the power supply shelf. Slide the power supply forward, towards the front of the computer. Manuever the power supply (clearing the security bar on the inside and upper chassis) and its cables out of the chassis.
Take Apart Power Supply - 84 and reattach it to the new power supply. Replacement Note: You must set the power supply voltage switch to the correct setting (115V in the U.S.) to avoid damaging the computer.
Take Apart Handle, Top Front - 85 Handle, Top Front No preliminary steps are required before you begin this procedure.
Take Apart Handle, Top Front - 86 1 2 Using a 2.5 mm allen wrench, remove the two allen screws. Lift the handle from the computer.
Take Apart Handle, Top Front - 87 Replacement Note: When installing the handles (top front and top rear) orient them so that the three tiny bumps on the handle are in the orientation shown in the photo. The handle won’t fit if it’s turned upside down. The top front and top rear handles are interchangeable.
Take Apart Handle, Top Rear - 88 Handle, Top Rear No preliminary steps are required before you begin this procedure.
Take Apart Handle, Top Rear - 89 1 2 Using a 2.5 mm allen wrench, remove the two allen screws. Lift the handle from the computer. Replacement Note: See prededing replacement note for orientation of the handles under “Handle, Top Front.
Take Apart Panel, Top - 90 Panel, Top Before you begin, remove the following: • top front handle • top rear handle
Take Apart Panel, Top - 91 1 2 Slide the top panel back, towards the power supply, to unhook the tabs. Lift the top panel from the chassis.
Take Apart Panel, Front - 92 Panel, Front Before you begin, remove the following: • top front handle • lower front support • lower front panel • CD-ROM/DVD-ROM/Zip drive bezel When the lower support is removed, the computer can be unstable.
Take Apart Panel, Front - 93 1 Open the side access panel. Locate the front panel tabs.
Take Apart Panel, Front - 94 2 3 Using a screwdriver, carefully push the tabs inward to release them from the chassis. Pull the front panel off the chassis.
Take Apart Panel, Rear, Vented - 95 Panel, Rear, Vented Before you begin, remove the following: • top rear handle • lower rear support When the lower support is removed, the computer can be unstable.
Take Apart Panel, Rear, Vented - 96 1 2 3 Open the side access panel. Remove the three 2.5 mm allen screws. Push in on the six tabs to release the panel from the chassis.
Take Apart Panel, Rear, Vented - 97 4 Once the tabs are released, carefully pull the rear panel forward to remove.
Take Apart Panel, Side, Right - 98 Panel, Side, Right Before you begin, remove the following: • PCI cards (if present) • video card • FireWire board (if present) • modem (if present) • logic board
Take Apart Panel, Side, Right - 99 1 Remove the four 2.5 mm allen screws on the side panel.
Take Apart Panel, Side, Right - 100 2 3 Open the side access panel. Remove the two Phillips screws attaching the side chassis frame to the panel latch.
Take Apart Panel, Side, Right - 101 4 5 Using a flatblade screwdriver or needlenose pliers, push or squeeze the plastic tabs (protruding through the side chassis panel), to release the right panel from the metal chassis. Remove the right side panel off the chassis.
Take Apart Panel, Side, Left - 102 Panel, Side, Left No preliminary steps are required before you begin this procedure.
Take Apart Panel, Side, Left - 103 1 Remove the four 2.5 mm allen screws on the side panel.
Take Apart Panel, Side, Left - 104 2 3 Open the side access panel. Remove the fan screws and drop the fan bracket down to access the plastic panel tabs (protruding through the side chassis) on the left side panel.
Take Apart Panel, Side, Left - 105 4 5 Using a needlenose pliers, squeeze the tabs (located behind the fan bracket) to release the left side panel from the metal chassis. Lift the left side panel off the chassis.
Take Apart Panel, Latch - 106 Panel, Latch Before you begin, open the side access panel and remove the following: • PCI cards (if present) • video card • FireWire board (if present) • modem (if present) • logic board • I/O panel
Take Apart Panel, Latch - 107 1 2 3 Remove the four Phillips screws holding the panel to the chassis. Note: Yellow arrows indicate tab locations. Slide the panel toward the hard drives, freeing the latch panel from the tabs on the chassis. Remove the latch panel.
Take Apart Panels, Lower Front and Lower Rear - 108 Panels, Lower Front and Lower Rear Before you begin, do the following: • Place the computer on its side. • Remove the front and/or rear support. When the lower support is removed, the computer can be unstable.
Take Apart Panels, Lower Front and Lower Rear - 109 Note: The computer is shown upside down. 1 Lift the lower front panel or the lower rear panel from the chassis. There are no screws holding these panels to the chassis. The front and rear supports (legs) hold them in place. Important: These panels are keyed. The notch goes on the access panel side.
Take Apart Supports, Front and Rear - 110 Supports, Front and Rear Before you begin, place the computer on an ESD mat and turn the unit upside down. When the lower supports are removed, the computer can be unstable.
Take Apart Supports, Front and Rear - 111 1 Using a 2.5 mm allen wrench, remove the four allen screws, two screws for each support.
Take Apart Supports, Front and Rear - 112 2 Lift the support off the computer.
Take Apart Panel, I/O Cover - 113 Panel, I/O Cover Before you begin, do the following: • Open the side access panel. • Remove the logic board.
Take Apart Panel, I/O Cover - 114 1 2 Remove the two screws on the I/O panel. Push the I/O panel inward to remove it from the chassis frame.
Take Apart Panel, I/O Cover - 115 Note: The I/O cover is difficult to remove, take your time prying the plastic tabs. 3 Using a jeweler’s screwdriver, working from right to left, carefully pry the plastic tabs away from the metal frame. As each tab is released, pull the I/O cover away from the frame.
Take Apart Speaker - 116 Speaker Before you begin, do the following: • Open the side access panel. • Remove the hard drive carrier. • Disconnect the main power cable from the logic board.
Take Apart Speaker - 117 1 Open the cable clamps. 3 Free the cable from the cable clamps and the fan bracket. 2 Disconnect the speaker cable from the logic board at J34.
Take Apart Speaker - 118 4 5 6 Push the speaker tab in and pull the speaker housing back to release. Remove the speaker housing from the computer. Remove the speaker from the speaker housing. Note: The speaker and speaker housing are separate parts.
Take Apart Front Panel Board - 119 Front Panel Board Before you begin, do the following: • Open the side access panel. • Remove the hard drive carrier to access the front panel cable. • Disconnect the main power cable from the logic board.
Take Apart Front Panel Board - 120 1 Disconnect the front panel cable, J2 cable (FireWire), and open the cable clamps.
Take Apart Front Panel Board - 121 2 3 4 Using a screwdriver, press tabs in on the front panel shield. Pull the front panel shield away from the chassis. Disconnect the three cables attaching to the front panel board. Replacement Note: Power cable P4 connects to the front panel board.
Take Apart Front Panel Board - 122 5 Push in and pry up on the three tiny metal tabs to release the front panel board from the front panel shield.
Take Apart I/O Panel - 123 I/O Panel Before you begin, do the following: • Open the side access panel. • Remove the logic board.
Take Apart I/O Panel - 124 1 Remove the two screws on the I/O panel.
Take Apart I/O Panel - 125 2 Tilt the I/O panel forward and remove.
K Service Source Troubleshooting Power Macintosh G3/Macintosh Server G3 (Blue and White)
Troubleshooting General/Block Diagram - 1 General Block Diagram
Troubleshooting General/Architecture of the Main Logic Board - 2 Architecture of the Main Logic Board The architecture of the main logic board is based on the PowerPC G3 microprocessor and these buses: the processor bus, two PCI buses, a primary 32-bit 66 MHz bus, and a secondary 64-bit 33 MHz bus. The processor bus connects the microprocessor, cache, and main memory; the primary PCI bus is for an Apple graphics card solution; the secondary PCI bus connects the I/O devices.
Troubleshooting General/Logic Board Diagram - 3 Logic Board Diagram Monitor Card Slot PCI Slots Sound In & Sound Out Ports USB Ports A&B Ethernet Connector ADB Firewire Ports (2) J1 IDE J15 Ultra2 ATA Modem Connector J23 Power S5 Power Button S4 Cuda Button SDRAM DIMM Slots Battery J8 CD Audio J31 Processor J34 J25 J2 Firewire Front Panel Plug-In Speaker Jumper Block Power Board Slot (w/sticker)
Troubleshooting General/Logic Board Troubleshooting - 4 Logic Board Troubleshooting Power-On Self Test There is a power-on self test that resides in the ROM of the Power Macintosh G3/Macintosh Server G3 (Blue and White). This test automatically runs whenever the Power Macintosh G3 is powered on after being fully shut down (the power-on self test does not run if the machine is only restarted). If a problem is detected during the test, you will not hear a normal startup chime.
Troubleshooting General/Logic Board Troubleshooting - 5 Resetting 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 real-time clock. Many system problems can be resolved by resetting the Cuda chip (see the Symptom/Cure tables for examples). Press the Cuda reset button on the logic board to reset the Cuda chip.
Troubleshooting General/Logic Board Troubleshooting - 6 Resetting the Logic Board Resetting the logic board can resolve many system problems (see the Symptom/Cure tables 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. 2. Press the Power On button on the front of the unit. 3. Open the side access panel. 4. Remove the battery from the logic board. 5.
Troubleshooting General/Logic Board Troubleshooting - 7 Note: This procedure resets the computer’s PRAM. Be sure to check the computer’s time/date and other system parameter settings afterwards. Logic Board Battery The battery on the logic board controls the stored system settings, such as date and time. It is important to note that the battery does not affect power at startup. The battery should be replaced if your system loses date and time settings.
Troubleshooting General/Logic Board LEDs - 8 Logic Board LEDs There are seven LEDs on the Power Macintosh G3/Macintosh Server G3 (Blue and White) computer. A graphic follows that identifies their logic board location. DS1 = ATA drive activity If a CD and/or Zip are attached to the ATA bus, this LED will illuminate at power/on restart time for a few seconds. After that, it is unlikely it will illuminate again in a trouble-free system.
Troubleshooting General/Logic Board LEDs - 9 DS4 and DS5 = USB power for downstream devices DS5 = USB port 1- lower DS4 = USB port 2- upper When illuminated, these LEDs indicate that the computer is providing power (+5 V) to downstream USB ports. USB devices do not need to be connected in order for these LEDs to illuminate.
Troubleshooting General/Logic Board LEDs - 10 a successful/normal boot, the sequence will look like: 1. Unit is powered on and other LEDs will illuminate while DS4 and DS5 are off. 2. Then DS4 and DS5 on for a second or two 3. Then off very briefly (1 sec) 4. Then back on (confirms secondary PCI bus is initialized and power now available) These two LEDs are often useful when troubleshooting an unpredictable system.
Troubleshooting General/Logic Board LEDs - 11 DS7 & DS8 = Power Indication In a working unit, these LEDs should be in sync with each other: both on or both off. If one LED is on and the other is off, there is a problem. DS9 = CPU Bus Request When illuminated, this LED indicates that the CPU is requesting the bus. This LED will rarely glow as brightly as the others (like the Ultra ATA LED) given that the CPU is not always requesting the bus, and when it does, the period of time is short.
Troubleshooting General/Logic Board LEDs - 12 Logic Board LEDs Locator DS1 DS4 DS6 DS7 DS8 DS9 DS5
Troubleshooting General/Processor and Jumper Block - 13 Processor and Jumper Block The logic board comes with a removable processor module. The processor should rarely fail and should be replaced only as a last resort. Processor modules can be ordered from Service. The jumper block you place at location J25 configures the board to work with different processor modules. Use the appropriate jumper block, identified by color, for each processor module.
Troubleshooting General/Processor and Jumper Block - 14 module. Failure to install the jumper block properly will result in a unit that does not boot up. Refer to “Processor Module” in Take Apart for processor and jumper installation instructions. Note: The jumper block is protected by a void-warranty sticker. End users are not allowed to remove this jumper block. If the sticker has been tampered with on a unit you receive for repair, do not honor the service warranty on the system.
Troubleshooting General/PCI Expansion Slots - 15 PCI Expansion Slots The logic board uses the industry-standard peripheral component interconnect (PCI) bus for an I/O expansion bus. The Power Macintosh G3 has a primary 66 MHz bus and a secondary 33 MHz PCI bus. The 66 MHz bus is a 32-bit multiplexed address and data bus. The 33 MHz bus is a 64-bit multiplexed address and data bus. The primary PCI bus, includes slot #1 (see graphic below), which accommodates only 32-bit 66 MHz +3.3V PCI cards.
Troubleshooting General/PCI Expansion Slots - 16 6.88-inch and 12.283-inch PCI cards as defined by the PCI Local Bus Specification, Revision 2.1. PCI cards are required to use the standard ISA fence described in the specification. The PCI slots support all the required PCI signals and certain optional PCI signals. The three 33 MHz PCI slots on the logic board support the optional 64-bit bus extension signals and cache support signals.
Troubleshooting General/PCI Expansion Slots - 17 board. (The slots are labeled on the back of the I/O panel cover.) 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 video I/O card installed, but they will not operate properly.
Troubleshooting General/SDRAM Do’s and Don’ts - 18 SDRAM Do’s and Don’ts Note: The Power Macintosh G3/Macintosh Server G3 (Blue and White) can only use PC-100 SDRAMs, which include a sticker that clearly shows “PC-100.” Sizes of 32 MB, 64 MB, 128 MB in 64 Mbit technology are qualified; sizes of 128 MB and 256 MB in 128 Mbit technology are qualified. Make sure the SDRAMs are • PC-100 SDRAM • 3.3 Volt unbuffered only • 168 pin modules • maximum DIMM height ≤ 2.
Troubleshooting General/SDRAM Do’s and Don’ts - 19 Do not use: • parity SDRAM DIMMs • ECC (error correcting) SDRAM DIMMs • registered or buffered SDRAM • DIMMs with fewer than 4 or more than 16 devices (irrespective of any PC-100 sticker or claims) The Power Macintosh G3/Macintosh Server G3 (Blue and White) is not compatible with all defined PC-100 DIMM sizes and organizations. In particular, do not use DIMMs using 256 Mbit SDRAMs; also, do not use DIMMs employing 32-bit wide SDRAMs.
Troubleshooting General/SDRAM Do’s and Don’ts - 20 recent efforts to qualify PC100 SDRAM for earlier versions of G3. Zero MB of memory is soldered to the Power Macintosh G3/ Macintosh Server G3 (Blue and White) main logic board. If all four of the DIMM slots are empty, the machine will not operate. A single-frequency tone will be generated indicating that no memory is installed. The DRAM DIMMs can be installed one or more at a time.
Troubleshooting General/Power Supply Verification - 21 Power Supply Verification The Power Macintosh G3 (Blue and White) logic board requires a “trickle” power of +5V to start up. If the system fails to start up, follow the procedure outlined below to determine whether the problem is related to the power supply. Note: To verify the power supply, you will need a volt meter. Verification Procedure Follow the procedures in the Take Apart chapter to access the power supply.
Troubleshooting General/Power Supply Verification - 22 1. Plug in a known-good power cord into the back of the computer. Note: Do not turn on the computer. Note: For the next steps, refer to Figure 1 to identify the pins indicated. 2. Connect the black lead of the volt meter to pin 16 of the 20pin power supply connector. Connect the red lead of the volt meter to pin 9 of the power supply connector. The volt meter should measure approximately +5V.
Troubleshooting General/Power Supply Verification - 23 3. Start up the computer by pressing the power button on the front of the computer. Note: Verify that the power cable is securely plugged into the front panel board. If the computer starts up normally, the power supply is OK. If the power supply does not start up, go to the next step. 4. Check to see if the power supply fan is spinning.
Troubleshooting General/Power Supply Verification - 24 not present, replace the power supply; otherwise, go to the next step. 6. Connect the black lead of the volt meter to pin 16 of the power supply connector. Connect the red lead of the volt meter to pin 4 of the power supply connector. The volt meter should measure approximately +5V. If you do not get a reading of +5V, re-check the volt meter connections and measure the voltage again.
Troubleshooting General/Power Supply Verification - 25 8. The testing is complete. You have just verified that the power supply is not the cause of the “System is completely dead” symptom.
Troubleshooting General/HFS Plus Formatted Drives - 26 HFS Plus Formatted Drives Some Power Macintosh G3 computers ship with hard drives that are formatted with HFS and some later models ship with hard drives that are formatted with HFS Plus (also referred to as Mac OS Extended format). The hard drives in the Power Macintosh G3 (Blue and White) and all Macintosh Server G3 computers are formatted with HFS Plus. Norton Utilities version 3.
Troubleshooting General/HFS Plus Formatted Drives - 27 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 Plus, Apple Computer recommends using the version of Disk First Aid included on the system software CD that shipped with the unit. Some other disk utility and disk locking programs are incompatible with Mac OS Extended format.
Troubleshooting General/HFS Plus Formatted Drives - 28 appear as “Mac OS Extended.” For more information on HFS Plus formatting of hard drives, refer to TIL article #30344.
Troubleshooting General/VGA-to-Macintosh Adapters - 29 VGA-to-Macintosh Adapters To avoid symptoms, “No video” or “Black Screen” situations do not use two VGA-to-Macintosh adapters (one on each end) on the video cable that connects a Power Macintosh G3/Macintosh Server G3 (Blue and White) to a monitor with a captive VGA connector.
Troubleshooting Symptom Charts/How to Use the Symptom Charts - 30 Symptom Charts How to Use the Symptom Charts The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the 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.
Troubleshooting Symptom Charts/System - 31 System System is completely dead 1 2 3 4 5 6 Check LEDS DS7 and DS8 on the logic board. In a working unit, these LEDs should be in sync with each other: both on or both off. If one LED is on and the other is off, there is a problem. Verify the power outlet is good. Try a known-good power cord. Make sure the voltage switch on the back of the power supply is set to the correct voltage.
Troubleshooting Symptom Charts/System - 32 7 Fan on power supply is running, but no startup tone, screen is black, drive not accessed at startup, and no LED on front of system 1 2 3 the Logic Board” earlier in this chapter for instructions.) Replace the logic board if the problem persists. Verify power supply voltage switch is set correctly for your region (see “Voltage Switch” in Basics chapter for more information). Check jumper block configuration at J25.
Troubleshooting Symptom Charts/System - 33 4 5 6 7 Fan is running, LED is on, drive is accessed at startup, no startup chime, and screen is black 1 2 Memory error dialog box message appears on the screen 1 3 Reseat DIMMS. Reset the logic board. Refer to “Resetting the Logic Board” mentioned earlier in this chapter. Replace logic board. Replace processor module. Reseat SDRAM DIMMs. Check jumper block configuration at J25.
Troubleshooting Symptom Charts/System - 34 2 3 Computer begins to power up, the fan and hard drive are spinning, the power LED is lit, but there is no video. 1 2 3 4 5 6 7 Verify that only PC-100 SDRAM DIMMs are installed and not EDO memory. Run MacTest Pro to locate the bad SDRAM. Replace the SDRAM with a known-good DIMM. Reseat SDRAM DIMMs. Refer to the “Power-On Self Test” section mentioned earlier in this chapter.
Troubleshooting Symptom Charts/System - 35 drives from the logic board. Do you have video? 8 Replace the video card. 9 Replace the logic board. 10 Replace the processor. Clicking, chirping, thumping, or rubbing 1 2 3 4 5 6 7 Remove all PCI cards and test unit. If problem does not occur with cards removed, begin replacing cards one at a time to determine which card is causing problem. Replace problem card with known-good card. Reseat the CD-ROM/Zip drive carrier and cables. Remove hard drive.
Troubleshooting Symptom Charts/System - 36 System shuts down intermittently 1 Check that the fan cable is connected and the fan is operational. 2 Make sure air vents are clear. Do not operate the computer with the access panel open, the heatsink could overheat. 3 Make sure power cord is plugged in firmly. 4 Replace power cord. 5 Check battery. 6 Reset Cuda chip. (Refer to “The Cuda Chip” in this chapter for instructions.) 7 Reset logic board.
Troubleshooting Symptom Charts/System - 37 system software with the CD that came with the unit. 3 Verify software is Power Macintosh compatible (contact developer). Also, try booting with extensions off to determine if there are system init problems. 4 Run Disk First Aid. 5 Test for bad memory. Run MacTest Pro in loop mode overnight to test the memory. If MacTest Pro finds a bad memory module, or other hardware, replace the hardware in question with a known-good module. 6 Clear parameter RAM.
Troubleshooting Symptom Charts/System - 38 During startup, following message is displayed, “This startup disk will not work on this Macintosh model....” 1 2 System freezes during normal operation 1 3 2 3 Verify startup disk is good. Verify system software is Mac OS 8.5.1 with Mac OS ROM 1.2. Perform a clean install of system software with the CD that came with the unit. Use the Extension Manager in Controls Panels. Boot with Extensions off by holding down the Shift key during startup.
Troubleshooting Symptom Charts/System - 39 4 5 6 7 only after you reconnect a particular USB device, replace that USB device. Test for bad memory. Run MacTest Pro in loop mode overnight to test the memory. If MacTest Pro finds a bad memory module, or other hardware, replace the hardware in question with a known-good module. Reset the logic board. Refer to “Resetting the Logic Board” mentioned earlier in this chapter. Replace the logic board. Replace the processor module.
Troubleshooting Symptom Charts/Error Beeps - 40 Error Beeps Computer beeps once at startup 1 2 3 4 5 6 7 Computer beeps twice at startup 1 2 One beep means that no RAM is installed or detected. Reseat the SDRAM and try again. If no SDRAM is present, install a known-good PC-100 SDRAM DIMM in the top slot and try again. If DRAM is present, replace it (one DIMM at a time, starting with the top DIMM slot) with a known-good PC-100 SDRAM DIMMs. Reseat processor module and try again.
Troubleshooting Computer beeps three times at startup Symptom Charts/Error Beeps - 41 3 4 5 Reseat processor module and try again. Replace processor module and try again. Replace logic board. 1 2 Three beeps means that no RAM banks passed memory testing. Replace the existing SDRAM one DIMM at a time with knowngood PC-100 SDRAM DIMMs. Reseat processor module and try again. Replace processor module and try again. Replace logic board.
Troubleshooting Symptom Charts/Video and Sound - 42 Video and Sound Screen is black, but boot tone is present, drive operates, fan is running, and LED is lit 1 2 3 4 5 Check video cable/card connections. If using a VGA to Macintosh adapter refer to “VGA-to-Macintosh Adapter” earlier in this chapter. Reseat SDRAM DIMMS. Make sure DIMMS are PC-100 DIMMS. Refer to “SDRAM DIMMS Do’s and Don’ts” in this chapter. Remove all SDRAM DIMMs and try replacing them one at a time to test. Replace any bad DIMMs.
Troubleshooting Symptom Charts/Video and Sound - 43 6 Reset Cuda chip. (Refer to “The Cuda Chip” in this chapter for instructions.) 7 Reset logic board. (Refer to “Resetting the Logic Board” in this chapter for instructions.) 8 Replace monitor cable. 9 Test with known-good monitor. Replace monitor if necessary. Refer to appropriate monitor manual to troubleshoot defective monitor. 10 Replace video card. 11 Replace processor module. 12 Replace logic board.
Troubleshooting Screen is black, there is no boot tone, and drive does not operate, but fan is running and LED is lit Symptom Charts/Video and Sound - 44 1 2 3 4 5 6 7 8 Check video cable/card connections. If using a VGA to Macintosh adapter refer to “VGA-to-Macintosh Adapter” earlier in this chapter. Check jumper block configuration at J25. Make sure jumper block is correct color for processor type installed (see “Jumper Location J25” earlier in this chapter for more information).
Troubleshooting Boot tone is present and screen lights up, but nothing is displayed on screen Symptom Charts/Video and Sound - 45 9 10 11 12 13 Replace monitor cable. Replace the video card. Replace processor module. Replace logic board. Replace power supply. 1 Check video cable/card connections. If using a VGA to Macintosh adapter refer to “VGA-to-Macintosh Adapter” earlier in this chapter. Reset Cuda chip. (Refer to “The Cuda Chip” in this chapter for instructions.) Reset logic board.
Troubleshooting Symptom Charts/Video and Sound - 46 8 9 Distorted Video 1 2 3 4 5 defective monitor. Replace processor module. Replace logic board. Adjust the focus using the Display Adjustment Utility on the MacTest Pro CD. Check the video cable. Check the video adapter is using one. Refer to “VGA-toMacintosh Adapter” earlier in this chapter. Adjust the screen geometry using the Display Adjustment Utility on the MacTest Pro CD.
Troubleshooting Symptom Charts/Video and Sound - 47 Erroneous text or characters appear on the screen 1 2 Check the keyboard and the keyboard connection. The system software may be corrupted. Reinstall system software. You must use the system software CD that came with the unit. Flashing question mark 1 Boot from the system CD to verify the hard drive can be seen on the desktop. If booting from a SCSI chain, make sure the hard drive priority numbers are set properly.
Troubleshooting Symptom Charts/Video and Sound - 48 Screen jitter 1 2 Reseat the video card. Replace the video card. No sound from computer’s speaker 1 2 3 4 Boot with a bootable CD and test. Boot with Extensions off and try again. 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 Command-Option-P-R during startup, until the Macintosh restarts.
Troubleshooting Symptom Charts/Hard Drive - 49 Hard Drive Single internal hard drive does not operate; drive doesn’t spin 1 2 3 4 5 6 No internal SCSI drives operate 1 2 3 Check if you can see the drive using Drive Setup from MacTest Pro. Reinstall the software drivers for the hard drive. Check all cable connections to the hard drive. Replace hard drive data cable. Verify hard drive power cable is OK. Try another power cable, such as P5, P2, or P3. Replace hard drive.
Troubleshooting Symptom Charts/Hard Drive - 50 4 5 6 7 Works with internal or external SCSI devices but not with both 1 2 3 4 5 6 7 8 If more than one SCSI device is on the SCSI chain, remove one device at a time and retest. Replace the bad drive. Replace internal SCSI data cable to which non-operational devices are attached. Reseat the SCSI PCI card. Replace the SCSI PCI card. Replace power supply. Verify there are no duplicate SCSI device addresses.
Troubleshooting Symptom Charts/CD-ROM and DVD-ROM Drives - 51 CD-ROM and DVD-ROM Drives CD-ROM tray won’t open 1 2 3 4 5 Verify CD-ROM software is good. Reinstall CD-ROM software. Reseat cables on the back of the CD-ROM drive. Reseat the CD-ROM data cable on the logic board. Try using known-good compact disc. Replace CD-ROM drive mechanism. CD-ROM icon does not appear on the desktop 1 2 3 4 5 6 Try using known-good compact disc. Reinstall CD-ROM software.
Troubleshooting “Cannot open” error message appears when Apple DVD Player launched Symptom Charts/CD-ROM and DVD-ROM Drives - 52 1 2 3 4 5 Make sure DVD-ROM drive is installed. If CD-ROM rather than DVD-ROM drive is installed, Apple DVD Player cannot launch. Quit all open applications and relaunch Apple DVD Player. Restart computer and relaunch Apple DVD Player. Turn off Chooser setting for automatically mounting servers at startup. For more information, see TIL article 30970.
Troubleshooting Symptom Charts/Zip Drive - 53 Zip Drive Zip drive does not operate 1 2 3 4 5 6 7 During system startup, Zip disk ejects 1 2 3 4 5 6 Replace Zip disk with known-good disk. Does the drive have power? Check that light blinks on front of the Zip drive. Reseat cables on the back of the Zip drive. Reinstall Zip software. Check device settings; device 0 (master), device 1 (slave) Replace IDE/ATA drive cable. Replace Zip drive. Replace logic board. Replace Zip disk with known-good disk.
Troubleshooting Zip Disk does not eject Symptom Charts/Zip Drive - 54 1 2 3 4 5 Switch off computer. Hold down mouse button while you switch computer on. Reinstall Zip software. Replace Zip drive. Replace IDE/ATA drive cable. Replace logic board. Zip drive attempts to eject disk, but doesn’t 1 2 Reseat Zip drive bezel so bezel slot aligns correctly with drive. Replace Zip drive. Zip drive runs continuously 1 2 3 4 5 Replace Zip disk with known-good disk. Reinstall Zip software. Replace Zip drive.
Troubleshooting Symptom Charts/Input Device Problems - 55 Input Device Problems Cursor does not move with the USB mouse 1 2 3 4 5 6 Disconnect and reconnect the mouse securely to the USB keyboard. Inspect inside of mouse for buildup of dirt or other contaminants. Clean mouse if necessary. Note: The mouse contains a ball and several rollers that must remain clean. If either the ball or rollers are dirty, the mouse might not track properly. Refer to Tech Info Library article 6491: “How To Clean A Mouse.
Troubleshooting Cursor moves, but clicking USB mouse button has no effect Symptom Charts/Input Device Problems - 56 1 2 3 4 5 Double-click doesn’t open application, disk, or server No response to any key on keyboard 1 2 3 Boot from bootable CD and test. If mouse is connected to keyboard, connect the mouse to one of the USB ports on the I/O panel instead. If the cursor moves, replace keyboard. If connected to I/O, try the other I/O connector. Does it work? Replace logic board. Replace USB mouse.
Troubleshooting Known-good USB printer does not work Symptom Charts/Input Device Problems - 57 4 5 Replace keyboard. Replace logic board. 1 Verify you have correct version of system software and printer driver installed. Open the Chooser and verify that you have the correct printer selected. If the printer is connected to a third-party USB hub, switch it to one of the USB ports on the I/O panel. If the printer works now, you have a bad third-party USB hub. Turn off unnecessary Extensions and try again.
Troubleshooting Symptom Charts/Input Device Problems - 58 3 4 Cursor does not move with the ADB mouse 1 2 3 4 Open the Chooser and verify that you have the correct printer selected. Does printer show up in Chooser? If so, perform clean install of system software and/or network and printer software. Verify that the mouse is connected securely to the ADB keyboard, monitor, or I/O panel connector. Inspect inside of mouse for buildup of dirt or other contaminants. Clean mouse if necessary.
Troubleshooting Symptom Charts/Input Device Problems - 59 5 If a known-good keyboard and mouse don’t work when connected to the I/O panel, replace logic board.
Troubleshooting Symptom Charts/Network Problems - 60 Network Problems Ethernet connection drops off line by itself 1 2 3 Try another Ethernet cable. Reinstall the Ethernet driver. Possible network problem. Troubleshoot the network. Unable to switch to the Ethernet network option in the control panel 1 Use a known-good Ethernet cable and connect properly to an known-good network. Reset parameter RAM. Hold down Command-Option-P-R during startup but before “Welcome to Macintosh” appears.
Troubleshooting Unable to see any network devices Symptom Charts/Network Problems - 61 1 2 3 4 5 6 Open the Network control panel and select the Ethernet option. Verify that you can now see devices on the network. Reset parameter RAM. Hold down Command-Option-P-R during startup but before “Welcome to Macintosh” appears. Boot from the system CD that came with the unit. Open the Network control panel and switch to Ethernet.
Troubleshooting Symptom Charts/Modem - 62 Modem The internal modem is not recognized. 1 2 3 4 5 6 7 Modem reports an error when dialing out 1 2 3 4 Make sure the correct CCL and extension files installed. Reseat the flexible modem cable on the logic board. Reinstall the CCL and modem extension. If the problem persists, reinstall the system software and try again. Zap PRAM by holding down Command-Option-P-R. Reseat the modem. Replace the modem. Replace the flexible modem cable.
Troubleshooting Symptom Charts/Modem - 63 Computer freezes when modem dials Extensions are in conflict or the Mac OS is corrupted. Enable only the Mac OS files in the Extensions Manager and any modem drivers needed. If the problem persists, reinstall the system software Modem is having trouble connecting to Online site 1 2 3 4 Use the Modem Country Selector utility to make sure the modem is set to the correct country. The phone line may have too much noise.
Troubleshooting Symptom Charts/Modem - 64 The system returns an error message when launching an Internet browser Browser software is not installed correctly. If necessary, reinstall the browser software. Note: Internet Explorer 4 and greater needs to be installed and not just drag copied. The dialup software will not initiate a connection 1 Modem is dropping its connection 1 2 2 3 Use the Modem Country Selector utility to make sure the modem is set to the correct country.
Troubleshooting Symptom Charts/Modem - 65 4 5 6 7 Modem disconnects after a period of time speed.) If the problem continues, contact the phone company to report the bad phone line. Verify that the user has call waiting on that phone line. With call waiting active, an incoming call can interrupt the connection. Disable call waiting using AT commands placed in the init string of the dialup application. Usually the string is *70. There may be a problem with the server to which you are connecting.
Troubleshooting Symptom Charts/Miscellaneous - 66 network administrator for more information. Modem is slow responding 1 2 Too many people are using the ISP's Internet services. When using an ISP, users need to remember that the ISP only has a limited amount of bandwidth to the Internet. If a large amount of people are dialing in, individual's speeds will be affected Check the phone line. The quality of the phone line can limit modem performance.
K Service Source Upgrades Power Macintosh G3/Macintosh Server G3 (Blue and White)
Upgrades DRAM Upgrade - 1 DRAM Upgrade DRAM-DIMM Slots (4) The Power Macintosh G3/ Macintosh Server G3 (Blue and White) can be expanded to a maximum of 1024 MB by adding DIMMs to any of the four DRAM DIMM slots on the main logic board. DIMMs from older Macintosh computers may physically fit in the slots, but they are not compatible and should not be used. Different size DRAM DIMMs can be installed in any order in any DIMM slot.
Upgrades DRAM Upgrade - 2 not need to be installed in pairs. It is recommended that DIMMs be installed in the first slot available closest to the center of the board (J-19), then adjacent slots J-20, J21, and J-22. Compatible DRAM DIMMs must meet all the following specifications: • PC-100 Synchronous DRAM (SDRAM) • 3.3 volt • 64-bit wide, 168-pin module • maximum of 16 memory devices on the DIMM • unbuffered; do not use registered or buffered Synchronous DRAM (SDRAM) • maximum height of 2.0 inches.
Upgrades DRAM Upgrade - 3 DRAM DIMM Installation Latch 1 Access Panel Access Panel 2 Lift the latch on the right side of the computer. Lower the access panel onto a clean, flat surface.
Upgrades DRAM Upgrade - 4 3 Notches DRAM Slot (1 of 4) 4 DRAM DIMM Connectors Ejector Ribs (inside slot) Align a DRAM DIMM in the DRAM slot so the notches line up with the ribs inside the slot. Push the DIMM down evenly until the ejectors snap into place. Note: To remove a DIMM, push down on the slot’s ejectors until they open and release the DIMM. Some DRAM slots may have only one ejector.
Upgrades Drive Upgrades - 5 Drive Upgrades CD-ROM/DVD-ROM Drive Bay Zip Drive Bay Drive Bay 1 Drive Bay 2 Drive Bay 3 The Power Macintosh G3/ Macintosh Server G3 (Blue and White) has five internal drive bays: three in the lower part of the computer and two in front on top. Standard Macintosh configurations include one internal Ultra ATA hard drive, or one, two, or three internal Ultra2 LVD SCSI drives.
Upgrades Drive Upgrades - 6 Ultra ATA Drives The Power Macintosh G3/Macintosh Server G3 (Blue and White) can accommodate either one or two internal Ultra ATA drives in the lower part of the computer, drive bay 3. (The U-shaped carrier, available for version 2 enclosures, allows installation of two ATA drives, stacked vertically.) Ultra2 LVD SCSI Drives Connect internal and external Ultra2 LVD SCSI devices using an internal PCI card and cable.
Upgrades Drive Upgrades - 7 However, the system will operate at the speed of the slowest device. For optimal performance using the Ultra2 LVD SCSI card, use only Ultra2 LVD SCSI devices. To maintain optimal performance using another kind of SCSI device, add a PCI card that supports the device. Supported Drives The Power Macintosh G3/Macintosh Server G3 (Blue and White) supports a maximum of three internal hard drives.
Upgrades Drive Upgrades - 8 • ATAPI drives, including CD-ROM, DVD-ROM, and Zip drives. Drive Front SCSI ID Numbers Pin 1 Jumper SCSI ID = 0 SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 If the computer came with one Ultra2 LVD SCSI drive, it has SCSI ID 0. If you are adding SCSI drives, the second drive is ID 1 and the third drive is ID 2. See the illustration for placing the jumper for ID 1 and 2. Note: The SCSI PCI card is ID 7. The drive in position 1 is the startup drive.
Upgrades Drive Upgrades - 9 Power Cable Bundle (Side view) Ribbon Cable Connector SCSI Drive Upgrade Procedure Before you begin, open the side access panel. Note: This procedure is based on computers using version 1 hard drive carriers. For version 2 hard drive carriers, see the version 2 instructions in the Take Apart hard drive topics.
Upgrades Drive Upgrades - 10 2 Screw Retainer 3 installed ATA drives. Disconnect the ribbon cable from the PCI card for any installed SCSI drives. Remove the screw from the rear of the drive carrier and remove the drive carrier retainer.
Upgrades Drive Upgrades - 11 4 Power Cable on Drive 5 6 Unplug the power cord from any hard drives attached to the drive carrier. Slide the drive carrier assembly toward the rear of the computer and lift it out. Assign a unique SCSI ID number to the drive being installed. See “SCSI ID Numbers” earlier in this chapter for more information.
Upgrades Drive Upgrades - 12 7 SCSI Hard Drive ATA Hard Drive 8 Drive Carrier 9 Screw Position the drive so that the drive’s connectors face away from the sheet metal side of the drive carrier. Screw the drive to the drive carrier with four screws. Connect the appropriate cable to the drive. Note: If you are installing a third-party SCSI card and cable, refer to the owner’s manual that came with the card.
Upgrades Drive Upgrades - 13 Note: The SCSI cable included with factoryinstalled SCSI drives has a built-in terminator block, so no terminator is needed. 10 Replace the drive carrier and slide it toward the front of the computer until it locks into position. Do not crimp any wires that are near or under the assembly. Power Cable P3 Power Cable P2 11 Replace the drive carrier retainer and screw it back in place.
Upgrades Drive Upgrades - 14 12 Plug the power cables into the hard ddrives. 13 Reconnect the main power cable bundle and the drives’ ribbon cable. Note: If you added a SCSI drive to a computer that came with an ATA drive, attach the main power cable bundle and the ATA ribbon cable to the main logic board and the SCSI ribbon cable to the SCSI PCI card.
Upgrades Drive Upgrades - 15 Sample SCSI Hard Drive and Cable Configurations SCSI Hard Drive SCSI Card Connector SCSI Hard Drive SCSI Terminator Ribbon Cable Plug Screw To install a SCSI hard drive in drive bay 3, attach the ribbon cable plug to the ribbon cable connector on the drive. To install a SCSI hard drive in drive bay 2, put the ribbon cable on top of the drive and attach the ribbon cable plug to the ribbon cable connector on the drive.
Upgrades Drive Upgrades - 16 with double-stick foam tape to make it lie flat. For maximum performance, use Ultra2 devices on an Ultra2 PCI card.
Upgrades Drive Upgrades - 17 Zip Drive Upgrade Before you begin, open the side access panel. The Zip drive upgrade kit includes an internal Zip drive, Zip drive bezel, and mounting screws. Install the Zip drive by following the procedures under “CD-ROM/DVDROM/DVD-RAM/Zip Drive Bezel” and “Zip Drive” in the Take Apart chapter.
Upgrades PCI Expansion Cards - 18 PCI Slots 2-4 PCI Slot 1 PCI Expansion Cards The Power Macintosh G3/ Macintosh Server G3 (Blue and White) has four expansion slots that accept PCI cards up to 12 inches long. Install only expansion cards that come with Macintosh driver software and that comply with the PCI 2.1 standard. NuBus cards cannot be used in these expansion slots.
Upgrades PCI Expansion Cards - 19 supplies a monitor port occupies PCI slot 1. This slot can accommodate 3.3 volt cards with 66 MHz frequency and 32bit data widths only. PCI slots 2, 3, and 4 can accommodate mixed voltage (5.0 V or 3.3 V) cards with a 33 MHz frequency and 32-bit or 64bit data widths. These slots will not accommodate 66 MHz cards.
Upgrades PCI Card Installation - 20 Screw Port Access Cover PCI Card Installation Before you begin, open the computer using the procedures in the Take Apart chapter of this manual. 1 2 Remove the port access cover screw. Remove the port access cover.
Upgrades PCI Card Installation - 21 Screw 3 Port Access Opening PCI Slot Align the PCI card’s connector with the expansion slot and press down firmly until the card is seated in the slot. Note: If the card is fulllength (12"), fit the end in one of the four card guides at the front of the computer. 4 Card Guides (4) 5 Use the port access cover screw to secure the PCI card to the port access opening.
Upgrades PCI Card Installation - 22 cover and the port access cover screw. Note: Do not leave an empty PCI slot uncovered. An uncovered port can affect the air flow to the computer’s components. Replacement Note: If you are replacing an Xclaim VR PCI card that includes an additional memory module with a new Xclaim VR card, transfer the memory module from the original card to the new card before installing it in the computer.
Upgrades Modem Installation - 23 Modem Installation Note: If you’re installing the modem upgrade kit, continue with these procedures. If you are removing or replacing a faulty modem, refer to the “Modem” section in the Take Apart chapter.
Upgrades Modem Installation - 24 1 Open the side access panel.
Upgrades Modem Installation - 25 2 3 4 Remove the screw that secures the modem plug on the I/O panel. Remove the modem plug. Position the modem so the modem port connector aligns with the modem hole on the I/O panel.
Upgrades Modem Installation - 26 5 Secure the two modem screws. One screw attaches to the logic board, and the other attaches to the I/O panel.
Upgrades Modem Installation - 27 6 7 Carefully connect the flexible modem cable to the logic board. Close the side access panel.
K Service Source Exploded View Power Macintosh G3/Macintosh Server G3 (Blue and White)
Exploded View 1 Ultra2 LVD SCSI, Single Channel 661-2148 Dual Channel 661-2171 Ethernet Gigabit Card 661-2172 Video Card, MPEG 2, DVD, Decoder Module 661-2109 Standoffs, Plastic, Dual Locking 922-3738 Video Card, 16 MB, Rage 128 Rev. 1 661-2150 Rev. 2 661-2208 Modem Shield,Top and Bottom Kit 076-0761 Flex Modem Cable 922-3737 CPU Heatsink Kit Rev. 2 076-0769 Rev.
Exploded View 2 COVERS Allen Screws Side Panels (typical) 922-3761 Left Side Panel 922-3685 Front and Rear Top Handle 922-3697 Top Panel 922-3691 Allen Screws Handles & Supports (typical) 922-3759 Allen Screws (3) Vented 922-3760 Rear Panel 922-3699 Latch Gromet 922-3729 Zip Bezel Kit 076-0762 Security Bar Cover 922-3693 I/O Panel Cover 922-3700 Right Side Panel 922-3686 Front Panel 922-3684 Front Support 922-3695 Enclosure with Chassis 922-3858 Note: Logic Board, CD drive, Zip drive, power suppl
Exploded View 3 Power Macintosh G3/Macintosh Server G3 (Blue and White) Screw Matrix Hard drive carrier and (5) screws in 076-0777 or (10) screws in 076-0778 (same as 922-3874) (4) Hard drive carrier,Ver. 2, to hard drive, (1) Hard drive carrier, Ver 2, to chassis 076-0777 076-0778 Ver. 2 only 922-3874 Ver. 2 only (4) Hard drive carrier, Ver. 2, to hard drive, (1) Hard drive carrier, Ver.
