K Service Source Power Macintosh 7300/ 7500/7600 & WS 7350 PM 7300/166 (Europe/Japan only), 7300/180 & 180PC, 7300/200, 7500/100, 7600/120, 7600/ 132, 7600/200 (Japan only), and WS 7350/180
K Service Source Basics Power Macintosh 7300/7500/ 7600 & WS 7350
Basics Overview - 1 Overview The Power Macintosh 7300, 7500, and 7600 and WS 7350 share the same housing and feature a chassis design that allows you to access the logic board and its components (including the plug-in microprocessor card) without having to remove the power supply or any drives. This flexible design makes these systems easy to service and upgrade.
Basics Overview - 2 • Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) • Built-in AAUI and 10BASE-T Ethernet • Two GeoPort serial ports • CD-ROM drive at 12x speed • CD-quality stereo sound in/out • Mac™ OS system software 7.5.
Basics Overview - 3 • Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) • Built-in AAUI and 10BASE-T Ethernet • Two GeoPort serial ports • CD-ROM drive at 12x speed • CD-quality stereo sound in/out • Mac™ OS system software 7.6.
Basics Overview - 4 • 500 MB or 1 GB hard drive • Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) • Three PCI expansion slots • One Digital Audio Video (DAV) slot • Video-in support via external ports • Built-in AAUI and 10BASE-T Ethernet • Two GeoPort serial ports • CD-ROM drive at 4x speed • CD-quality stereo sound in/out • Mac OS system software 7.5.2 Features of the Power Macintosh 7600 (U.S.
Basics Overview - 5 • 1.2 GB hard drive • Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) • Three PCI expansion slots • One Digital Audio Video (DAV) slot • Video-in support via external ports • Built-in AAUI and 10BASE-T Ethernet • Two GeoPort serial ports • CD-ROM drive at 4x or 8x speed • CD-quality stereo sound in/out • Mac OS system software 7.5.
Basics Overview - 6 • 2 MB VRAM, expandable to 4 MB • 2 GB hard drive • Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) • Three PCI expansion slots • One Digital Audio Video (DAV) slot • Video-in support via external ports • Built-in AAUI and 10BASE-T Ethernet • Two GeoPort serial ports • CD-ROM drive at 12x speed • CD-quality stereo sound in/out • Support for TCP/IP networking software with Apple Open Transport • Mac OS system software 7.5.
Basics Overview - 7 • • • • • • • • • • • cache 48 MB of DRAM, expandable to 512 MB using 168-pin, 70 ns, 64-bit DIMMs 2 MB VRAM, expandable to 4 MB 4 GB hard drive Two SCSI DMA buses supporting up to eight SCSI devices and transfers up to 10 MB/s (internal bus only) Three PCI expansion slots Built-in AAUI and 10BASE-T Ethernet Two GeoPort serial ports CD-ROM drive at 12x speed CD-quality stereo sound in/out Mac™ OS system software 7.6.1 Apple RAID 1.
Basics Overview - 8 Figure: PM 7300/7500/7600 & WS 7350 Computer
Basics Configurations - 9 Configurations The Power Macintosh 7300/166 comes standard with • 166 MHz PowerPC 604e microprocessor card • 16 MB DRAM • 2 GB hard drive • AppleCD 1800i 12x CD-ROM drive • 2 MB of VRAM • 256K Level 2 cache The Power Macintosh 7300/180 comes standard with • 180 MHz PowerPC 604e microprocessor card • 16 MB DRAM • 2 GB hard drive • AppleCD 1800i 12x CD-ROM drive • 2 MB of VRAM • 256K Level 2 cache
Basics Configurations - 10 The Power Macintosh 7300/180 PC Compatible comes standard with • 180 MHz PowerPC 604e microprocessor card • 32 MB of DRAM • 2 GB hard drive • AppleCD 1800i 12x CD-ROM drive • 2 MB of VRAM • 256K Level 2 cache • 166 MHz Pentium processor card with FPU, 256K Level 2 cache, 16 MB of DRAM, 2 MB of video DRAM The Power Macintosh 7300/200 comes standard with • 200 MHz PowerPC 604e microprocessor card • 32 MB DRAM • 2 GB hard drive • AppleCD 1800i 12x CD-ROM drive • 2 MB of VRAM • 256K
Basics Configurations - 11 The Power Macintosh 7500/100 comes standard with • 100 MHz PowerPC 601 microprocessor card • 8/16 MB DRAM • 500 MB or 1 GB hard drive • AppleCD 600i 4x CD-ROM drive • 2 MB of VRAM The Power Macintosh 7600/120 comes standard with • 120 MHz PowerPC 604 microprocessor card • 16 MB DRAM • 1.
Basics Configurations - 12 The Power Macintosh 7600/132 comes standard with • 132 MHz PowerPC 604 microprocessor card • 16 MB DRAM • 1.
Basics Configurations - 13 The Workgroup Server 7350/180 comes standard with • 180 MHz PowerPC 604e microprocessor card • 48 MB DRAM • 4 GB hard drive • AppleCD 12x CD-ROM drive • 2 MB of VRAM • 256K Level 2 cache In addition, there are three solution bundles for the WS 7350/180: • Application Server Solution • AppleShare Server Solution • Apple Internet Server Solution
Basics PowerPC 601 Microprocessor - 14 PowerPC 601 Microprocessor The Power Macintosh 7500/100 features the PowerPC 601 RISC microprocessor. The PowerPC 601 microprocessor is installed via a card that plugs into the Macintosh 7500/100 logic board, allowing for maximum flexibility with future upgrades.
Basics PowerPC 604 and 604e Microprocessor - 15 PowerPC 604 and 604e Microprocessor The Power Macintosh 7300 and 7600 and Workgroup Server 7350 computers feature the PowerPC 604 and 604e RISC microprocessor. The microprocessor is installed via a card that plugs into the logic board, allowing for maximum flexibility with future upgrades.
Basics Peripheral Component Interconnect (PCI) - 16 Peripheral Component Interconnect (PCI) All the computer systems covered in this manual offer a Peripheral Component Interconnect (PCI) expansion bus. Because the PCI bus is an industry standard, most existing PCI 2.0-compliant cards (with the addition of a Mac OSspecific software driver) will work in these computers. PCI offers significantly higher performance than the NuBus architecture used in previous Macintosh models.
Basics Dual In-Line Memory Modules (DIMMs) - 17 Dual In-Line Memory Modules (DIMMs) All the computer systems covered in this manual use DRAM Dual In-Line Memory Modules (DIMMs) instead of DRAM SIMMs. Whereas SIMMs have 72 pins, DIMMs have 168 pins. The extra pins provide a 64-bit data path, compared to a 32-bit data path for SIMMs. In addition, DIMMs do not have to be installed in pairs like the SIMMs on earlier Macintosh models.
Basics Dual In-Line Memory Modules (DIMMs) - 18 Important: These computers also use VRAM DIMMs (112pin 70 ns or faster) instead of VRAM SIMMs. The VRAM SIMMs used in earlier Power Macintosh models are not compatible. Note: While the Power Macintosh 7300 Series, the Power Macintosh 7600/200, and the Workgroup Server 7350/ 180 ship with EDO DIMMs, the computers’ memory controller treats EDO DIMMs like fast-paged DIMMs. You can therefore use either EDO or fast-paged DIMMs in these computers.
Basics Memory Configurations - 19 Memory Configurations All the computer systems covered in this manual have eight DRAM DIMM slots on the logic board, each with a 64-bit data bus. You can increase the computers’ DRAM to a total of 512 MB using 5-volt, 64-bit-wide, 168-pin fast-paged mode, 70 ns DIMMs. (You can also use EDO DIMMs in the PM 7300 Series, 7600/200, and WS 7350/180. See the note on the previous page for more information.
Basics Memory Configurations - 20 Note: Memory interleaving allows the computer to read or write to its memory while other memory reads or writes are occurring, thus providing for faster performance. For a pair of DIMMs to function as a single 128-bit wide pair, they must be the same type and size. Note: DIMMs purchased from different manufacturers can be paired as long as they are the same size and speed.
Basics Memory Configurations - 21 B4 slot B3 slot B2 slot B1 slot A4 slot A3 slot A2 slot A1 slot (front of computer) Figure: DRAM Slots on PM 7300/7500/7600 & WS 7350
Basics Ethernet Support - 22 Ethernet Support There are two Ethernet ports on the logic board: an AAUI port and a 10BASE-T port. You can use only one Ethernet port at one time, however. If you have cables plugged into both Ethernet ports, the computer uses the 10BASE-T port by default.
Basics AV Support - 23 AV Support The Power Macintosh 7500 and 7600 computers come standard with an AV module that provides support for: composite video and S-video input, audio input (left and right), and audio output (left and right). The Power Macintosh 7300 and WS 7350 computers do not include an AV module. PC Compatibility Cards Apple computer offers PC Compatibility Card upgrade kits that bring full DOS functionality to the Power Macintosh 7300, 7500, and 7600 computers.
Basics GeoPort - 24 GeoPort Geoport is a hardware and software communications architecture that has been optimized for computertelephony integration. It has three main attributes: • It lets any computer connect to any telephone (analog or digital, public or private) anywhere in the world. • Once connected, it supports an arbitrary number of independent data streams up to a total bandwidth of 2 MB/ second.
Basics GeoPort - 25 By attaching an Apple GeoPort Telecom Adapter to the Power Macintosh 7300, 7500, or 7600, you can enjoy all the features of a 33.6 modem, including data, fax, send and receive, and voice capabilities. The GeoPort Telecom Adapter serves as a line interface to standard (analog) telephone lines. The adapter is capable of sending or receiving data at up to 33.6 kbps and faxes at up to 14.4 kbps using the GeoPort Telecom Adapter software.
Basics The Cuda Chip - 26 The Cuda Chip The Cuda is a microcontroller chip. Its function is to • Turn system power on and off • Manage system resets from various commands • Maintain parameter RAM (PRAM) • Manage the Apple Desktop Bus (ADB) • Manage the real-time clock Many system problems can be resolved by resetting the Cuda chip (see Symptom Charts for examples). Press the Cuda reset button on the logic board to reset the Cuda chip.
Basics Resetting the Logic Board - 27 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 - 28 5 6 Make sure the battery is installed in the correct +/direction. 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. Note: If this procedure resolves the problem, claim an adjustment on an SRO. If not, replace the defective component and DO NOT claim the adjustment procedure.
Basics Fast SCSI - 29 Fast SCSI All the computer systems covered in this manual offer Fast SCSI support on the internal SCSI connector, which provides for significantly enhanced data throughput. The internal SCSI bus on these computers supports transfer rates up to 10 MB/sec.
Basics Rear View Diagram - 30 Rear View Diagram The drawing on the next page illustrates the rear panel connectors on the Power Macintosh 7300, 7500, 7600 and WS 7350 computers, which include the following ports: SCSI, AAUI Ethernet, 10BASE-T Ethernet, serial printer (GeoPort compatible), serial modem (GeoPort compatible), DB-15 video, ADB, sound input, sound output, composite video input (Power Macintosh 7500 and 7600 only), Svideo input (Power Macintosh 7500 and 7600 only), left and right audio input (P
Basics Rear View Diagram - 31 Audio Input Audio Output Composite Video Input S-Video Input Printer Sound Out Sound In SCSI ADB AAUI Monitor Ethernet Modem 10BASE-T Ethernet Figure: Rear Panel
Basics Logic Board Diagram - 32 Logic Board Diagram The following drawing illustrates the connectors on the Power Macintosh 7300, 7500, 7600 and WS 7350 logic boards. Note: Some versions of the logic boards have a ROM SIMM while other versions have the ROM soldered on the logic board.
Basics Logic Board Diagram - 33 Internal Power CD Floppy 3.
Basics Repair Strategy - 34 Repair Strategy Service the Power Macintosh 7300, 7500, 7600, and WS 7350 computers through module exchange and parts replacement. Customers can request on-site service from an Apple Authorized Service Provider Plus (AASP+) or Apple Assurance. They can also choose carry-in service from an AASP. Ordering Apple Service Providers planning to support the computer systems covered in this manual may purchase Service modules and parts to develop servicing capability.
Basics Ordering - 35 Large businesses, universities, and K-12 accounts must provide a purchase order on all transactions, including orders placed through the AppleOrder system. Service providers not enrolled in AppleOrder may fax their orders to Service Provider Support (512-908-8125) or mail them to Apple Computer, Inc. Service Provider Support MS 212-SPS Austin, TX 78714-9125 If you have further questions, please call Service Provider Support at 800-919-2775 and select option #1.
Basics Warranty and AppleCare - 36 Warranty and AppleCare The Power Macintosh 7300, 7500, 7600, and WS 7350 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.
K Service Source Specifications Power Macintosh 7300/7500/ 7600 & WS 7350
Specifications Processor - 1 Processor CPU PM 7300/166 (Europe and Japan) PM 7300/180 PM 7300/180 PC PowerPC 604e RISC microprocessor running at 166 MHz Built-in FPU Requires system software version 7.5.5 or later PowerPC 604e RISC microprocessor running at 180 MHz Built-in FPU Requires system software version 7.5.5 or later PowerPC 604e RISC microprocessor running at 180 MHz Built-in FPU Requires system software version 7.6.
Specifications PM 7300/200 PM 7500/100 PM 7600/120 PM 7600/132 Processor - 2 PowerPC 604e RISC microprocessor running at 200 MHz Built-in FPU Requires system software version 7.5.5 or later PowerPC 601 RISC microprocessor running at 100 MHz Built-in FPU Requires system software version 7.5.2 or later with appropriate Enabler version PowerPC 604 RISC microprocessor running at 120 MHz Built-in FPU Requires system software version 7.5.
Specifications PM 7600/200 (Japan) WS 7350/180 Processor - 3 PowerPC 604e RISC microprocessor running at 200 MHz Built-in FPU Requires system software version 7.5.5 or later PowerPC 604e RISC microprocessor running at 180 MHz Built-in FPU Requires system software version 7.6.
Specifications Memory - 4 Memory DRAM PM 7300 Series 16 or 32 MB standard; expandable to 512 MB Uses 168-pin, 64-bit, 60 ns or faster EDO DRAM DIMMs PM 7500/100 8 or16 MB standard; expandable to 512 MB Uses 168-pin, 64-bit, 70 ns or faster DRAM DIMMs PM 7600/120 and 7600/132 16 or 32 MB standard; expandable to 512 MB Uses 168-pin, 64-bit, 70 ns or faster DRAM DIMMs PM 7600/200 (Japan) 16 or 32 MB standard; expandable to 512 MB Uses 168-pin, 64-bit, 60 ns or faster EDO DRAM DIMMs
Specifications WS 7350/180 Memory - 5 48 MB standard; expandable to 512 MB Uses 168-pin, 64-bit, 70 ns or faster DRAM DIMMs Cache Supports 256K, 512K, or 1 MB Level 2 cache DIMM (160-pin, 11 ns) ROM 4 MB ROM (may be installed in ROM SIMM slot, or soldered on the logic board) Clock/Calendar CMOS custom circuitry with long-life battery
Specifications I/O Interfaces - 6 I/O Interfaces SCSI Dual-channel asynchronous SCSI interface; external channel supports up to seven SCSI devices; internal channel supports a hard disk array Serial Two RS-232/RS-422 serial ports compatible with LocalTalk and GeoPort cables; mini DIN-9 connectors ADB One Apple Desktop Bus port for a keyboard, mouse, etc.
Specifications Expansion I/O Interfaces - 7 Three PCI expansion slots, compatible with all PCI 2.
Specifications I/O Devices - 8 I/O Devices Keyboard Standard, extended, or adjustable keyboard; keyboard draws 2580 mA, depending on model type Mouse ADB Mouse II; mouse draws up to 10 mA Microphone Apple PlainTalk microphone standard
Specifications Video Support - 9 Video Support Table 1: Video Table PIXEL DEPTHS MONITOR DISPLAY SIZE 2 MB VRAM* 4 MB VRAM* 512 by 384 8, 16, 32 8, 16, 32 768 by 576 8, 16, 32 8, 16, 32 640 by 480 800 by 600 832 by 624 1024 by 768 1152 by 870 8, 16, 32 8, 16, 32 8, 16, 32 8, 16 8, 16 8, 16, 32 8, 16, 32 8, 16, 32 8, 16, 32 8, 16
Specifications Video Support - 10 Table 1: Video Table PIXEL DEPTHS MONITOR DISPLAY SIZE 1280 by 960 1280 by 1024 2 MB VRAM* 4 MB VRAM* 8 8, 16 8 8, 16 *The Power Macintosh 7300, 7500, and 7600, and WS 7350 computers do not have any VRAM soldered on the logic board; VRAM DIMMs must be present to display any video. The computer comes with two 1 MB VRAM DIMMs installed. You can upgrade to 4 MB of VRAM by installing two more 1 MB VRAM DIMMs in the remaining slots.
Specifications Disk Storage - 11 Disk Storage Hard Drive PM 7300 Series PM 7500/100 PM 7600 Series PM 7600/200 (Japan) WS 7350/180 Floppy Drive 2 GB fast internal SCSI hard drive 500 MB or 1 GB fast internal SCSI hard drive 1.2 GB fast internal SCSI hard drive 2 GB fast internal SCSI hard drive 4 GB fast internal SCSI hard drive One Apple SuperDrive 1.
Specifications CD-ROM Drive PM 7300 Series PM 7500/100 PM 7600/120 PM 7600/132 PM 7600/200 (Japan) WS 7350/180 Disk Storage - 12 One One One One One One internal internal internal internal internal internal AppleCD AppleCD AppleCD AppleCD AppleCD AppleCD 1800i 12x CD-ROM drive 600i 4x CD-ROM drive 600i 4x CD-ROM drive 1200i 8x CD-ROM drive 1800i 12x CD-ROM drive 1800i 12x CD-ROM drive
Specifications Electrical - 13 Electrical Line Voltage 100-240 VAC, RMS single phase, automatically configured Frequency 50-60 Hz, single phase Maximum Power 150 W maximum, not including monitor
Specifications Physical - 14 Physical Dimensions Height: Width: Depth: Weight: 6.15 in. (15.6 cm) 14.37 in. (36.5 cm) 16.93 in. (43.0 cm) 22 lb. (9.
Specifications Environmental - 15 Environmental Operating Temperature 50 to 104° F (10 to 40° C) Storage Temperature -40 to 116° F (-40 to 47° C) Relative Humidity 5–95% noncondensing Maximum Altitude 10,000 ft.
K Service Source Troubleshooting Power Macintosh 7300/7500/ 7600 & WS 7350
Troubleshooting General - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the first cure first. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. (Note: If you have replaced a module, reinstall the original module before you proceed to the next cure.
Troubleshooting Cleaning Procedure for Card Connectors - 2 Cleaning Procedure for Card Connectors It is possible for residue to build up on the gold edge connector pins on some PCI cards, which could cause a variety of symptoms. If you are having problems with a PCI card, inspect the connector pins with a magnifying glass. If you find residue, use a pencil eraser to gently clean the pins.
Troubleshooting 2/3/4/6 GB Firmware Utility 1.0/ - 3 2/3/4/6 GB Firmware Utility 1.0 The 2/3/4/6 GB Firmware Utility 1.0 (which supercedes the 2 GB/4 GB Download Utility version 1.0) was released November 20, 1997. It is used to update the firmware on 2, 3, 4, and 6 GB SCSI hard drives in some Power Macintosh configurations with firmware versions other than 0F0J. This utility can be used on international versions of Mac OS as well as U.S. Mac OS versions.
Troubleshooting 2/3/4/6 GB Firmware Utility 1.0/ - 4 double-click it to use it. Disk Copy is available in the Utilities folder. Disk Copy 6.1 (or later) or Disk Image Mounter 2.1 (or later) from Apple are the recommended applications to access all disk images released by Apple and are the only supported applications to access NDIF disk images.
Troubleshooting Symptom Charts/Power Supply - 5 Symptom Charts Power Supply System doesn’t power up 1 2 3 4 5 6 7 Reseat processor card and ROM SIMM (if present). On Power Macintosh 7500/100 systems only, check the cache DIMM. If cache DIMM has part number 820-0719-B printed on its PCB, remove DIMM and replace with part number 661-1310. Reset Cuda chip. (Refer to “The Cuda Chip” in Basics for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics for instructions.
Troubleshooting Symptom Charts/Error Chords - 6 Error Chords One-part error chord sounds during startup sequence 1 2 3 4 5 Eight-part error chord (death chimes) sounds during startup sequence 1 2 Disconnect SCSI data cable from hard drive and reboot system. If startup sequence is normal, initialize hard drive. Test unit again with SCSI data cable connected. If error chord still sounds, replace hard drive. Disconnect floppy drive cable from floppy drive and reboot system.
Troubleshooting Symptom Charts/System - 7 System Does not power on, screen is black, fan is not running and LED is not lit 1 2 3 4 5 6 7 8 9 Check power cables. Plug monitor directly into wall socket, and verify that monitor has power. Reseat ROM SIMM (if present) and processor card. The logic board must have a processor card installed to operate. Reset Cuda chip. (Refer to “The Cuda Chip” in Basics for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics for instructions.
Troubleshooting Clicking, chirping, or thumping Symptom Charts/System - 8 1 2 3 4 5 6 7 Remove all PCI cards and test the unit. If problem does not occur with cards removed, begin replacing them one at a time to determine which card is causing the problem. Replace problem card with known-good card. Remove hard drive. If problem no longer occurs, replace hard drive with a known-good drive. Replace power supply. Replace processor card. Replace logic board. Retain customer's DIMMs.
Troubleshooting System shuts down intermittently Symptom Charts/System - 9 1 2 3 4 5 6 7 8 9 Make sure air vents are clear. Thermal protection circuitry may shut down system. After 30 to 40 minutes, system should be OK. Make sure power cord is firmly plugged in. Replace power cord. Check battery. Reset Cuda chip. (Refer to “The Cuda Chip” in Basics for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics for instructions.) Replace power supply. Replace processor card.
Troubleshooting System intermittently crashes or hangs Symptom Charts/System - 10 1 2 3 4 Verify system software is version 7.5.2 or later (Power Macintosh 7500), 7.5.3 or later (Power Macintosh 7600), 7.5.5 or later (Power Macintosh 7300), or 7.6.1 or later (WS 7350). If unit freezes coming out of sleep, or if there are other hard drive issues, use Apple System Profiler to check hard drive firmware revision. Use 2/3/4/6 GB Firmware Utility 1.
Troubleshooting Symptom Charts/System - 11 5 Verify software is known-good. Do a clean install of the system software. 6 Verify software is Power Macintosh compatible (contact developer). Also, try booting with extensions off to determine if there are system init problems. 7 If system serial number is XB633XXX8L or less and system has a 132 MHz card installed, replace the card. 8 Clear parameter RAM. Hold down
Troubleshooting During startup, following message is displayed, "This startup disk will not work on this Macintosh model...." Symptom Charts/System - 12 1 2 3 Verify startup disk is good. Verify system software is version 7.5.2 or later (Power Macintosh 7500), 7.5.3 or later (Power Macintosh 7600), 7.5.5 or later (Power Macintosh 7300), or 7.6.1 or later (WS 7350). Do a clean install of the system software.
Troubleshooting Symptom Charts/Video - 13 Video Screen is black, boot tone is present, drive operates, fan is running, and LED is lit 1 2 3 4 5 6 7 8 9 Adjust brightness on monitor. Clear parameter RAM. Hold down
Troubleshooting Screen is black, no boot tone and drive does not operate, but fan is running and LED is lit Symptom Charts/Video - 14 1 2 3 4 5 6 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics for instructions.) Remove all DRAM DIMMs and try replacing them one at a time to test. Replace any bad DIMMs. Replace processor card. Replace logic board. Retain customer's DIMMs. Replace power supply.
Troubleshooting Boot tone is present and screen lights up, but nothing is displayed on screen Symptom Charts/Video - 15 1 2 3 4 5 6 Reset Cuda chip. (Refer to “The Cuda Chip” in Basics for instructions.) Reset logic board. (Refer to “Resetting the Logic Board” in Basics for instructions.) Replace monitor cable. Test with known-good monitor. Replace monitor if necessary. Refer to appropriate monitor manual to troubleshoot defective monitor. Replace processor card. Replace logic board.
Troubleshooting Video display distorted on Power Macintosh 7500 with DAV card installed Symptom Charts/Video - 16 Symptom occurs when an add-in card attached to the DAV connector requires a mode configuration under which the add-in card controls most of the signal lines (Mode 2). Verify that the logic board installed supports DAV cards; if not, replace the logic board.
Troubleshooting Symptom Charts/Video - 17 Jumper Wire PCB Part Number 820-0564-XX NOTE: The dotted line indicates that the jumper wire is running underneath the logic board.
Troubleshooting Symptom Charts/Floppy Drive - 18 Floppy Drive Internal floppy drive does not operate 1 2 3 4 5 Replace floppy disk with known-good disk. Replace floppy drive cable. Replace floppy drive. Replace processor card. Replace logic board. Retain customer's DIMMs. During system startup, disk ejects; display shows icon with blinking "X" 1 2 3 4 5 Replace disk with known-good system disk. Replace floppy drive cable. Replace floppy drive. Replace processor card. Replace logic board.
Troubleshooting Does not eject disk Symptom Charts/Floppy Drive - 19 1 2 3 4 5 Switch off computer. Hold mouse button down while you switch computer on. Replace floppy drive cable. Replace floppy drive. Replace processor card. Replace logic board. Retain customer's DIMMs. Attempts to eject disk, but doesn’t 1 2 Reseat floppy drive bezel and drive so bezel slot aligns correctly with drive. Replace floppy drive.
Troubleshooting MS-DOS drive does not recognize a disk formatted on a 1.4 MB drive Symptom Charts/Floppy Drive - 20 1 To read and write files with either MS-DOS or 1.4 MB drive, format all disks with MS-DOS drive first.
Troubleshooting Symptom Charts/Hard Drive - 21 Hard Drive Single internal hard drive does not operate; drive doesn’t spin 1 2 No internal SCSI drives operate 1 2 3 3 4 5 6 Replace hard drive power cable. Replace hard drive. If problem resolved, reinstall SCSI device driver and system software. Replace power supply. Verify there are no duplicate SCSI device addresses. Disconnect external SCSI devices and check for proper termination. Only last device in SCSI chain should be terminated.
Troubleshooting Drive does not appear on the desktop Symptom Charts/Hard Drive - 22 1 2 3 4 5 6 Works with internal or external SCSI devices but not with both 1 2 3 4 Verify there are no duplicate SCSI device addresses. Update the SCSI device driver using Drive Setup. Check drive's directory structure using Disk First Aid. Replace SCSI hard drive cable. If drive is not initialized, use Drive Setup to initialize. Replace with known-good hard drive.
Troubleshooting Symptom Charts/Peripherals - 23 Peripherals Cursor does not move 1 2 6 7 Check mouse connection. Inspect inside of mouse for buildup of dirt or other contaminants. Clean mouse if necessary. If mouse was connected to keyboard, connect mouse to computer ADB port instead. If mouse works, replace keyboard. Replace ADB cable. If mouse does not work in any ADB port on computer, replace mouse. Replace processor card. Replace logic board. Retain customer's DIMMs.
Troubleshooting Double-click doesn’t open application, disk, or server Symptom Charts/Peripherals - 24 1 2 5 Remove duplicate system folders. Clear parameter RAM. Hold down
Troubleshooting Symptom Charts/Peripherals - 25 Known-good serial printer does not work 1 2 3 4 5 6 Verify you have correct version of system software. Verify that Chooser is set correctly. Reinstall correct printer drivers. Do clean install of system software. Replace printer interface cable. Replace logic board. Retain customer's DIMMs. Known-good network printer does not print 1 2 3 4 Check network connections. Verify you have correct version of system software.
Troubleshooting Symptom Charts/CD-ROM Drive - 26 CD-ROM Drive CD-ROM drive does not work 1 2 Try using known-good compact disc. Replace CD-ROM drive mechanism. Macintosh does not display CD-ROM icon once CD is inserted in drive 1 2 3 4 Verify that CD-ROM software is installed. Replace CD-ROM drive mechanism. Replace SCSI data cable. Computer with 600i CD-ROM drive makes stuttering sounds when playing CD+ or CD-R formatted discs or CD-ROM disc won’t mount Replace CD-ROM drive.
Troubleshooting Symptom Charts/Miscellaneous - 27 Miscellaneous No sound from speaker 1 2 3 4 5 Verify that volume setting in Control Panel is 1 or above. Clear parameter RAM. Hold down
Troubleshooting Errors occur when initializing or erasing floppy disks and/or 1.4 MB disks show only 1 MB available after initialization Symptom Charts/Miscellaneous - 28 This problem only occurs on systems using a 180 MHz or faster processor card. Upgrade to system software version 7.5.4 or later to resolve this problem (the Apple recommended solution) or, alternatively, install the Power Mac Format Patch, which can be found on the original system disks that shipped with the computer.
K Service Source Take Apart Power Macintosh 7300/7500/ 7600 & WS 7350
Take Apart Top Housing Top Housing - 1 Top Housing No preliminary steps are required before you begin this procedure. Note: The top housing covers the top, front, and left and right sides of the computer.
Take Apart Top Housing - 2 1 Left Tab Right Tab Press the two tabs at the front corners of the top housing to release the top housing from the bottom chassis.
Take Apart Top Housing - 3 2 Pull the top housing forward about 1 to 2 inches and lift straight up to remove the top housing from the computer.
Take Apart Bezels - 4 Bezels Before you begin, remove the top housing. Note: As you face the computer, the bezels are in the middle of the top housing’s front panel.
Take Apart Bezels - 5 Tab 1 From the inside of the top housing, push out on the moon-shaped opening at the bottom of the bezel to release the tab. Lift up the bezel to remove it from the top housing.
Take Apart Battery - 6 Battery Before you begin, remove the top housing. Note: As you face the computer, the battery is near the front left corner of the logic board.
Take Apart Battery - 7 1 Internal Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart Battery - 8 2 Use a screwdriver to gently pry up one side of the battery cover.
Take Apart Battery - 9 3 Lift up the battery to remove it from the logic board.
Take Apart CD-ROM Drive - 10 CD-ROM Drive Before you begin, remove the top housing. Note: As you face the computer, the CD-ROM drive is in the bottom right drive bay.
Take Apart CD-ROM Drive - 11 1 CD-ROM Shield Lift up the top tabs and pull out the CD-ROM EMI shield to remove it from the front of the CD-ROM drive.
Take Apart CD-ROM Drive - 12 2 Power Cable SCSI Cable CD Audio Cable Disconnect the SCSI cable, power cable, and CD audio cable from the back of the CD-ROM drive.
Take Apart CD-ROM Drive - 13 3 Pull up the retaining clip (which is located at the back of the CD-ROM drive) and slide the CDROM forward to remove it from the internal chassis. Note: Be sure to remove the CD-ROM drive from its carrier before returning the drive to Apple.
Take Apart Floppy Drive - 14 Floppy Drive Before you begin, remove the top housing. Note: As you face the computer, the floppy drive is in the top right drive bay.
Take Apart Floppy Drive - 15 1 Floppy Drive Shield Blank Shield CD-ROM Shield Remove the CD-ROM shield, the blank shield, and the floppy drive shield from the front of the unit.
Take Apart Floppy Drive - 16 Chassis Support Foot 2 Flip open the chassis support foot.
Take Apart Floppy Drive Cable Floppy Drive - 17 Floppy Drive 3 Disconnect the floppy drive cable from the back of the floppy drive.
Take Apart Drive Rails Floppy Drive - 18 Floppy Drive 4 Pull out on the plastic drive rails that hold the floppy drive to the drive chassis and push back the drive to release it. Replacement Note: If you are replacing the floppy drive, remove the EMI gasket from the defective drive and attach the gasket in the center of the replacement drive’s top surface, with the “V” of the gasket pointing at the front edge of the drive. If the old gasket won't stick, order a new gasket (p/n 922-1895).
Take Apart Hard Drive - 19 Hard Drive Before you begin, remove the top housing. Note: As you face the computer, the hard drive is in the top left drive bay.
Take Apart Hard Drive - 20 1 Floppy Drive Shield Blank Shield CD-ROM Shield Remove the CD-ROM shield, the blank shield, and the floppy drive shield from the front of the unit.
Take Apart Hard Drive - 21 2 Power Cable SCSI Cable Disconnect the SCSI cable and hard drive power cable from the back of the hard drive.
Take Apart Hard Drive - 22 3 Retaining Clip Pull up the retaining clip at the back of the hard drive and push back the hard drive to remove it from the drive chassis. Note: For information on removing the hard drive from its carrier and returning drives, cables, and carriers to Apple, refer to Additional Procedures in the Hard Drives manual.
Take Apart Chassis Latch - 23 Chassis Latch Chassis Latch Before you begin, remove the top housing. Note: The chassis latches mount in the internal chassis and secure the internal chassis to the external chassis frame.
Take Apart Chassis Latch - 24 1 Tab Use a screwdriver to push out the tab indicated in the illustration. Slide the latch forward and lift it from the chassis.
Take Apart Drive Rails - 25 Drive Rails Before you begin, remove the following: • Top Housing • All Drives Note: The drive rails attach to the internal chassis underneath the CD-ROM drive and the extra hard drive bay.
Take Apart Drive Rails - 26 1 Internal Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart Drive Rails - 27 Tab 2 3 Use a screwdriver to push out the tab indicated in the illustration. Slide the drive rail either forward or backward (depending on which way the tabs are facing) and lift it from the chassis.
Take Apart Power Supply - 28 Power Supply Power Supply Before you begin, remove the top housing. Note: As you face the computer, the power supply is in the back right corner. IMPORTANT: When replacing the power supply, be sure the voltage switch on the back of the power supply is set correctly (115V in the U.S.).
Take Apart Hard Drive Power Cable Power Supply - 29 CD Power Cable 1 Disconnect the power supply cables from the back of the CD-ROM drive and hard drive(s).
Take Apart Power Supply - 30 2 Internal Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart Power Supply - 31 3 Chassis Support Arm To secure the internal chassis in the up position, flip down the chassis support arm. Make sure the tab on the bottom of the support arm is securely fastened in the hole provided in the bottom chassis. Warning: To be safe, never work on the computer with the internal chassis in the up position unless the chassis support arm is down and securely fastened.
Take Apart Power Supply - 32 Power Supply Cables 4 Disconnect the power supply cables from the logic board. Note: The 10-pin power supply cable supplies 3.3 V power for the processor card. The 22-pin cable supplies 5 V and +/- 12 V power for the logic board.
Take Apart Screw Screw Power Supply - 33 5 From the back of the computer, remove the two screws that secure the power supply to the chassis.
Take Apart Power Supply - 34 6 Chassis Support Arm Tab Release the chassis support arm and swing down the internal chassis.
Take Apart Power Supply - 35 7 Slide the power supply forward and pull it out of the computer. You will need to feed the power supply cables that connect to the logic board up through the hole in the chassis. IMPORTANT: Make sure the power supply switch on the back of the power supply is set to the correct voltage (115V in the U.S.) The switch is accessible through the computer’s rear panel when the power supply is installed.
Take Apart Power Supply - 36 Replacement Note: There are two metal tabs on the back of the metal chassis that lock into the power supply. When replacing the power supply, slide it back until it locks into place.
Take Apart Speaker - 37 Speaker Before you begin, remove the top housing. Speaker Note: As you face the computer, the speaker is in the front left corner of the bottom chassis.
Take Apart Speaker - 38 1 Swing open the expansion card cover.
Take Apart Speaker - 39 2 Screw Screw Remove the two Torx screws that secure the speaker to the metal chassis.
Take Apart Speaker - 40 3 4 Speaker Cable Latch Disconnect the speaker cable from the logic board. Press the latch holding the speaker to the chassis and lift the speaker out of the computer.
Take Apart Power Actuator - 41 Power Actuator Before you begin, remove the top housing. Note: As you face the computer, the power actuator is in the front left corner of the bottom chassis (directly beneath the speaker).
Take Apart Power Actuator - 42 1 Tab Power Actuator Push in the tab that secures the power actuator to the chassis and push the power actuator out of the computer.
Take Apart PCI Cover - 43 PCI Cover Before you begin, remove the top housing. Note: As you face the back of the computer, the PCI covers are on the right side of the rear panel.
Take Apart PCI Cover - 44 1 Swing open the expansion card cover.
Take Apart PCI Cover - 45 2 PCI Cover From the back of the computer, press in and lift up on the PCI cover to remove it.
Take Apart Rear Panel - 46 Rear Panel Before you begin, remove the top housing. Note: The rear panel covers the back side of the computer through which all the external connectors are accessible.
Take Apart Rear Panel - 47 1 Internal Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart Tab Rear Panel - 48 2 Lift the rear panel straight up to unhook it from the metal chassis. Once the rear panel is unhooked, you can remove it from the computer. Note: There are tabs on the rear panel that hook into the metal chassis.
Take Apart Rear Panel - 49 Replacement Note: To replace the rear panel, you must first follow the procedures for removing the logic board. Instead of fully removing the logic board from the chassis, however, just slide it forward about an inch. Once you have the rear panel in place, slide the logic board back toward the rear panel until the board locks into place. Be sure the logic board connectors are lined up properly with the openings in the rear panel.
Take Apart Processor Card - 50 Processor Card Processor Card Before you begin, remove the top housing. Note: The processor card installs perpendicularly to the logic board directly beneath the plastic PCI guide.
Take Apart Processor Card - 51 1 Swing open the expansion card cover.
Take Apart Processor Card Processor Card - 52 Heat Sink Warning: The heat sink may be hot to the touch. 2 Grab the corners of the processor card and pull the card straight up to remove it. Replacement Note: Position the card evenly over the processor card slot and press down gently. Do not force the card or you may damage it. Make sure the card is seated evenly. If you are installing a 132 MHz card in the computer, you must install an EMI clip.
Take Apart Processor Card - 53 Grounding Clip Processor Card Heat Sink (Back of Computer) Top Chassis The EMI clip is provided in the 132 MHz Card Upgrade Kit. 3 Slide the grounding EMI clip over one wall of the top chassis. Make sure the grounding clip also touches the processor card heat sink.
Take Apart PCI Cards - 54 PCI Cards Before you begin, remove the top housing. Note: PCI expansion cards, if present, install perpendicularly to the logic board in one of three PCI slots. They are located directly beneath the plastic PCI guide. PCI Card Slots If installing third-party PCI cards, use the middle PCI slot for better clearance with the expansion card cover. If necessary, remove the expansion cover.
Take Apart PCI Cards - 55 1 Swing open the expansion card cover to provide access to the logic board.
Take Apart PCI Cards - 56 2 PCI Card Grab the corners of the PCI card and pull up the card to remove it.
Take Apart AV Module - 57 AV Module AV Module Before you begin, remove the top housing. Note: The AV module is installed only in Power Macintosh 7500 and 7600 Series computers. The module attaches to the rear panel and plugs into the logic board. It’s located next to the PCI slots.
Take Apart AV Module - 58 1 Swing open the expansion card cover to provide access to the AV module.
Take Apart AV Module - 59 AV Module Cable 2 Disconnect the AV module cable from the logic board.
Take Apart AV Module - 60 Screw Screw 3 Remove the two Torx screws that secure the AV module to the rear panel.
Take Apart AV Module - 61 4 AV Module Lift out the AV module to remove it from the computer.
Take Apart AV Module - 62 5 AV Connector Cover Remove the AV connector cover from the rear panel.
Take Apart VRAM DIMMs - 63 VRAM DIMMs Before you begin, remove the top housing. Note: VRAM DIMMs install on the logic board in the VRAM DIMM slots. VRAM DIMM Slots Note: The Power Macintosh 7300, 7500, and 7600, and WS 7350 computers use VRAM DIMMs (112-pin, 70 ns or faster) instead of VRAM SIMMs. The VRAM SIMMs used in earlier Power Macintosh models are not compatible.
Take Apart VRAM DIMMs - 64 1 Internal Drive Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart VRAM DIMMs - 65 2 Chassis Support Arm Tab To secure the internal chassis in the up position, flip down the chassis support arm and make sure its bottom tab is securely fastened in the hole provided in the bottom chassis. Warning: To be safe, never work on the computer with the internal chassis in the up position unless the chassis support arm is down and securely fastened.
Take Apart VRAM DIMMs - 66 3 Push down the release latch next to the VRAM DIMM. Grab the DIMM by the top corners and lift straight up to remove the DIMM from the logic board. Note: See the following pages for important replacement information.
Take Apart VRAM DIMMs - 67 Replacement Note: Position the DIMM evenly over the slot and press down gently to install it. The release latch should click into place. Be careful not to force the VRAM DIMM or you may damage it. Make sure the DIMM is evenly seated. Note: This computer uses VRAM DIMMs (112-pin, 70 ns or faster) instead of VRAM SIMMs. The VRAM SIMMs used in earlier Power Macintosh models are not compatible.
Take Apart VRAM DIMMs - 68 4 Chassis Support Arm Tab Be sure to release the chassis support arm before you swing down the internal chassis.
Take Apart Logic Board - 69 Logic Board Before you begin, remove the following: • Top Housing • Processor Card • PCI Cards (if present) • Speaker • Power Actuator Note: The logic board is located in the very bottom of the bottom chassis.
Take Apart Logic Board - 70 1 Swing open the expansion card cover to provide access to the logic board.
Take Apart Logic Board - 71 2 Internal Drive Chassis Chassis Support Foot First, release the chassis latches. Next, flip open the chassis support foot and then swing open the internal chassis that contains the power supply.
Take Apart SCSI 22-Pin CD Audio Power Supply Power Supply Floppy Logic Board - 72 3 Disconnect the following cables from the logic board: both power supply cables, floppy drive cable, SCSI cable, and CD audio cable.
Take Apart Logic Board - 73 4 LED Cable Speaker Cable Disconnect the LED and speaker cables from the logic board.
Take Apart Logic Board - 74 AV Module Cable 5 Disconnect the AV module cable from the logic board.
Take Apart Logic Board - 75 6 Top Column Support Remove the screw inside the top column support that secures the logic board to the chassis.
Take Apart Logic Board - 76 7 Tab Tab Press down on the two tabs at the front of the logic board and slide the logic forward (away from the rear panel) to release it from the tabs on the bottom chassis. Lift the logic board from the chassis to remove it. IMPORTANT: Remove the EMI clip when you take the logic board out of the chassis. Failure to comply may result in damage to the board. (See the next page for instructions).
Take Apart Logic Board - 77 8 Lift up the top edge of the EMI clip and pull it off the board to remove it. Note: Remove the EMI clip and any cache, DRAM, or VRAM DIMM(s) before returning the logic board to Apple. Do NOT remove the ROM SIMM (if present).
Take Apart Bottom Chassis - 78 Bottom Chassis Before you begin, remove the following: • Top Housing • Processor Card • PCI Cards (if present) • AV Module (if present) • Speaker • Power Supply • Power Actuator • All Drives • Chassis Latches • Drive Rails • Logic Board • Rear Panel
Take Apart Bottom Chassis - 79 Note: The bottom chassis is what is left once all other modules have been removed.
Take Apart Security Bar - 80 Security Bar No preliminary steps are required before you begin this procedure. Note: The security bar is a feature on the Power Macintosh 7300 Series, the Power Macintosh 7600/ 200, and the WS 7350 computers.
Take Apart Security Bar - 81 1 2 Remove the security bar mounting screw. Rotate the bar up to release the tab from the slot on the front of the computer and remove the bar.
K Service Source Upgrades Power Macintosh 7300/7500/ 7600
Upgrades PC Compatibility Cards - 1 PC Compatibility Cards There are three Apple PC Compatibility cards that can be installed in the Power Macintosh 7300, 7500, and 7600 Series computers: • 7” 100 MHz PC Compatibility Card • 12” 100 MHz PC Compatibility Card • 12” 166 MHz-P PC Compatibility Card For more information about these cards and installation instructions, refer to the PC Compatibility Card manual on this Service Source CD.
Upgrades Power Macintosh 7600 Upgrade - 2 Power Macintosh 7600 Upgrade The Power Macintosh 7600 Upgrade Kit upgrades a Power Macintosh 7200 to a 7600. The upgraded logic board does not include a processor on the board; it requires that you install a separate processor card to run the machine. Refer to the Upgrades Chapter in the Power Macintosh 7200 Series/WS 7250 manual for complete installation instructions.
K Service Source Exploded View Power Macintosh 7300/7500/ 7600 & WS 7350
Exploded View 1 Top Housing 922-1642 Power Supply 661-0920* SCSI Cable 922-1637 Hard Drive * 661-0219 661-1142 661-0180 661-0998 Expansion Card Cover 922-1660 Rear Panel 922-1655 CD-ROM Bezel 922-1649 Blank Bezel 922-1651 Floppy Drive Cable 922-1636 Floppy Drive 661-0121 Hard Drive Carrier 922-0621 Floppy/Hard Drive Chassis 922-1648 Blank AV Cover 922-1722 Floppy Drive Shield 922-1648 Blank PCI Cover 922-1628 Blank Shield 922-1652 Drive Rail 922-1658 Video Cover 922-1720 Support Foot 922-1661 Supp
