Apple Power Macintosh 132 Series Specifications

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.
Features of the Power Macintosh 7300 include
• A 166, 180, or 200 MHz PowerPC™ 604e
microprocessor card with built-in FPU and 256K cache
• 16 or 32 MB of DRAM, expandable to 512 MB using
168-pin, 70 ns, 64-bit DIMMs
• 2 MB VRAM, expandable to 4 MB
• 2 GB hard drive
• Three PCI expansion slots
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 7.5.5
Features of the Power Macintosh 7300/180 PC Compatible
include
A 180 MHz PowerPC™ 604e microprocessor card with
built-in FPU and 256K cache
• 32 MB of DRAM, expandable to 512 MB using 168-pin,
70 ns, 64-bit DIMMs
• 2 MB VRAM, expandable to 4 MB
• 2 GB hard drive
• Three PCI expansion slots
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 7.6.1
• 166 MHz Pentium processor card with FPU, 256K Level
2 cache, 16 MB of DRAM (expandable to 80 MB), 2 MB
of video DRAM
• Windows 95 system software preinstalled
Features of the Power Macintosh 7500 include
• A 100 MHz PowerPC 601 microprocessor card with
built-in FPU and optional Level 2 cache
• 8 or 16 MB DRAM expansion up to 512 MB using 168pin, 70 ns, 64-bit DIMMs
• 2 MB VRAM, expandable to 4 MB
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.) include
• A 120 or 132 MHz PowerPC 604 microprocessor card
with built-in FPU and 256K cache
• 16 MB of DRAM, expandable to 512 MB using 168-pin,
70 ns, 64-bit DIMMs
• 2 MB VRAM, expandable to 4 MB
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 7.5.3
Features of the Power Macintosh 7600/200 (Japan only)
include
• A 200 MHz PowerPC 604e microprocessor card with
built-in FPU and 256K cache
• 32 MB of DRAM, expandable to 512 MB using 168-pin,
70 ns, 64-bit DIMMs
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 7.5.5
Features of the Workgroup Server 7350/180 include
• A 180 MHz PowerPC 604e microprocessor card with
built-in FPU, 64K on-chip cache, and 256K Level 2
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 1.5
The Power Macintosh 7300, 7500, and 7600 Series and WS
7350 computer is pictured on the following page.
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 Level 2 cache
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
• 1.2 GB hard drive
• AppleCD 600i 4x CD-ROM drive
• 2 MB of VRAM
Basics
Configurations - 12
The Power Macintosh 7600/132 comes standard with
• 132 MHz PowerPC 604 microprocessor card
• 16 MB DRAM
• 1.2 GB hard drive
• AppleCD 1200i 8x CD-ROM drive
• 2 MB of VRAM
The Power Macintosh 7600/200 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 Level 2 cache
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.
Features of the microprocessor include
•
•
•
•
•
•
•
Full RISC processor architecture
32-bit addressing
64-bit data bus
Built-in FPU
32K cache for data and instructions
Internal Memory Management Unit (MMU)
Advanced branching techniques for improved throughput
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.
Features of the microprocessor include
• Full RISC processing architecture
• Parallel processing units: one load-store unit, two
integer units, one complex integer unit, and one floating
point unit
• Separate built-in caches for data and instructions, 16K
each for the 604 and 32K each for the 604e
• Advanced branching techniques for improved throughput
• Bus multiplier up to 3:1 for the 604 and up to 5:1 for
the 604e
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. Running at
33 MHz, the PCI bus is up to three times faster than NuBus,
offering overall enhanced system performance, particularly
in the areas of video and networking.
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. (However, to take advantage of memory
interleaving, the DIMMs should be installed in paired slots.
See “Memory Configurations” in Basics for more
information.)
Important: These computers use +5 V DIMMs only. Single
In-Line Memory Modules (SIMMs) used in previous
Macintosh models are NOT compatible with these computers.
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.)
Note: These computers do not have any main memory
soldered to the logic board. At least one RAM DIMM must be
present for the computers to operate.
DRAM DIMMs can be installed individually; however, to take
advantage of the computer’s interleaving capability, which
provides maximum performance, you must install the
DIMMs in matching pairs and in paired slots.
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.
The drawing on the following page illustrates where the
DRAM slots are located on the Power Macintosh 7300,
7500, 7600 and WS 7350 logic boards and how they are
numbered.
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. The cards plug into any
available PCI slot on the logic board. Refer to the Upgrades
chapter in this manual for installation instructions.
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.
• Unlike traditional asynchronous data communications
(such as AppleTalk), GeoPort also supports isochronous
data streams (such as real-time voice and video) and
provides the real-time Application Program Interfaces
(APIs) necessary to hide the implementation details
from both the recipient and the sender.
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. (See
"Logic Board Diagram" later in this chapter to locate the
Cuda reset button.) If you continue to experience system
problems, refer to “Resetting the Logic Board” later in this
Basics chapter.
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.)
2
4
Remove the battery from the logic board. (See Take
Apart for instructions on how to remove the battery.)
Wait at least 10 minutes before replacing the battery.
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 (Power Macintosh 7500 and 7600
only), left and right audio output (Power Macintosh 7500
and 7600 only).
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 3.3V Power
SCSI Supply Speaker Audio Drive
Supply
External SCSI
VRAM Slots
ROM SIMM
DRAM
Slots
AAUI Ethernet
10BASE-T
Ethernet
Printer/Modem
Cache DIMM
Video
ADB
DRAM
Slots
Battery
Cuda Reset
Sound
In/Out
Power LED
PCI
Slots
Power
On/Off
Processor Card Slot
Figure: PM 7300, 7500, 7600 & WS 7350 Logic Board
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. To order
parts, use the AppleOrder system and refer to the Power
Macintosh 7300, 7500, 7600, or WS 7350 "Service Price
Pages."
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 7.6.1 or later
Pentium processor with FPU running at 166 MHz
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 7.5.3 or later with appropriate
Enabler version
PowerPC 604 RISC microprocessor running at 132 MHz
Built-in FPU
Requires system software version 7.5.3 Revision 2 or later
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 7.6.1 or later
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.
Ethernet
One AAUI and one 10BASE-T Ethernet port (if cables are plugged
into both ports, system defaults to 10BASE-T)
Specifications
Expansion
I/O Interfaces - 7
Three PCI expansion slots, compatible with all PCI 2.0
specification-compliant cards with the addition of Mac OSspecific software driver (not NuBus compatible)
Sound
16-bit stereo sound input and output ports
Video
Built-in DB-15 video connector on logic board
PM 7500 and 7600
Series
24-bit video input connectors on AV module
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. VRAM DIMMs must be installed
in matching pairs and in paired 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 1.4 MB floppy drive
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. (9.97 kg); weight varies depending on devices installed
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. (3,048 m)
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.)
If you are not sure what the problem is, or if the Symptom Charts
do not resolve the problem, refer to the Flowchart for the product
family.
For additional assistance, contact Apple Technical Support.
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.
This bootable disk image contains a utility to fix a problem with a
limited number of 2, 3, 4, and 6 GB SCSI hard drives in some
Power Macintosh and Performa configurations that may
experience a problem waking after the machines has been set to
the Sleep mode.
This software consists of a Disk Copy NDIF (New Disk Image
Format) compressed image, which requires Disk Copy 6.1 or
later to use. Download this software to your hard drive and then
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.)
Replace power supply.
Replace processor card.
Replace logic board.
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. If startup sequence is normal, replace floppy drive.
Reseat processor card.
Replace processor card.
Replace logic board. Retain customer's DIMMs.
Replace DRAM DIMMs one at a time to test DRAM. Replace
any faulty DIMMs.
Replace logic board.
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.)
Replace power cord.
Replace power supply.
Replace processor card.
Replace logic board. Retain customer's DIMMs.
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.
Replace floppy drive cable.
Replace floppy drive.
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.
Replace logic board. Retain customer's DIMMs.
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 1.0
if necessary, which can be found on Service Source CD or can
be downloaded from Apple's software updates web site. Note:
Download the image to a floppy disk, as opposed to drag/
copying it to a floppy disk, or the utility will not update
properly. (See “2/3/4/6 GB Firmware Utility 1.0” earlier
in this chapter for more information.)
Verify DIMMs are noncomposite.
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.
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 <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
9 Remove all DRAM DIMMs and try replacing them one at a
time to test. Replace any bad DIMMs.
10 Replace processor card.
11 Replace logic board. Retain DIMMs.
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 <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
Reset Cuda chip. (Refer to “The Cuda Chip” in Basics.)
Reset logic board. (See “Resetting Logic Board” in Basics.)
Replace monitor cable.
Remove all DRAM DIMMs and try replacing them one at a
time to test. Replace any bad DIMMs.
Test with known-good monitor. Replace monitor if
necessary. Refer to appropriate monitor manual to
troubleshoot defective monitor.
Replace processor card.
Replace logic board. Retain customer's DIMMs.
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. Retain customer's DIMMs.
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.
If the logic board in question meets either of the following criteria,
then it DOES support DAV cards and you need not replace the board:
• Part number 820-0752 is silk-screened on the logic
board.
• The Logic board has the wiring scenario shown on the next
page.
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.
U18
Power Macintosh 7500 Logic Board with DAV Fix
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. Retain customer's DIMMs.
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.
Internal floppy drive
runs continuously
1
2
3
4
5
Replace disk with known-good floppy disk.
Replace floppy drive cable.
Replace floppy drive.
Replace processor card.
Replace logic board. Retain customer's DIMMs.
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.
Replace SCSI data cable.
Replace power supply.
Replace processor card.
Replace logic board. Retain customer's DIMMs.
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.
If hard drive still doesn't work, switch back to original hard
drive and replace logic board.
Verify there are no duplicate SCSI device addresses.
Replace terminator on external SCSI device.
Verify that SCSI device at end of internal SCSI data cable is
only device terminated.
Refer to appropriate manual to troubleshoot defective
external device.
Troubleshooting
Symptom Charts/Peripherals - 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.
1
2
3
Boot from floppy or bootable CD.
Replace mouse.
Replace logic board. Retain customer's DIMMs.
3
4
5
Cursor moves, but
clicking mouse
button has no effect
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 <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
If mouse was connected to keyboard, connect mouse to
computer ADB port instead. If mouse works, replace
keyboard.
If mouse does not work in any ADB port on computer, replace
mouse.
Replace logic board. Retain customer's DIMMs.
1
2
3
4
Check keyboard connection to ADB port.
Replace keyboard cable.
Replace keyboard.
Replace logic board. Retain customer's DIMMs.
3
4
No response to any
key on keyboard
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.
Verify that Chooser is set correctly.
Does printer show up in Chooser? If so, do clean install of
system software and/or network and printer software.
Replace logic board. Retain customer's DIMMs.
5
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 <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
Verify speaker is plugged into logic board.
Replace speaker.
Replace logic board. Retain customer’s DIMMs.
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.
To install the patch:
• While holding down the Option key, drag the Power Mac
Format Patch icon onto the System Folder’s icon.
• Click OK to automatically place the patch in the Extensions
folder.
• Restart the computer by choosing Restart from the Special
menu.
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.
Blank Bezel
CD-ROM Bezel
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.
Battery
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.
CD-ROM Drive
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.
CD-ROM Drive
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.
Floppy Drive
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.
Hard Drive
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.
Hard Drive
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.
Chassis Latch
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.
Drive Rails
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.
Tab
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).
Power Actuator
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.
PCI Covers
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.
Rear Panel
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.
Tab
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.
Release Latch
VRAM DIMM
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.
Note: The Power Macintosh 7300, 7500, and 7600 and WS
7350 computers come with two 1 MB VRAM DIMMs
installed. To upgrade the unit to 4 MB, you must install two
1 MB VRAM DIMMs in the remaining VRAM slots. VRAM
DIMMs must be installed in matching pairs and in paired
slots in the computer.
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.
Logic Board
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).
EMI Clip
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
Support Arm 922-1730
AV Module
922-1723
LED Cable 922-0841
Power Actuator 922-1644
Bottom
Chassis
922-1641
Foot
922-1659
Chassis
Latch
922-1656
Speaker
Housing
922-1640
Speaker
922-1639
CD Audio Cable 922-1638
CD-ROM Drive*
661-0913,
661-1240
661-1415
Column
Support
922-1643
CD-ROM
Shield
922-1650
EMI Clip
922-1721
Processor Card *
661-0917,
661-0925, 661-1267
661-1305, 661-1307
Logic Board*
661-1154, 661-1219,
661-1266, 661-1783
Product family configurations may vary. For parts with asterisk (*), refer to parts list.
Power Macintosh 7300/WS7350/7500/7600
CD-ROM
Carrier
922-0850