Apple Macintosh Quadra Centris WS80 Service Manual

K

Service Source

Macintosh Quadra 800/WS

80

Macintosh Quadra 800
Workgroup Server 80

K

Service Source

Specifications

Quadra 800/WS 80

Specifications Processor - 2

Processor

CPU

Addressing

Motorola 68040 microprocessor
33 MHz
Built-in paged memory management unit (PMMU), floating-point

unit (FPU), and 8K memory cache

32-bit registers
32-bit address/data bus

Specifications Memory - 3

Memory

DRAM

ROM

PRAM

8 MB (soldered DRAM) or 24 MB (8 MB soldered DRAM plus four

4 MB SIMMs) standard; expandable to 136 MB
72-pin SIMMs
60 ns access time

1 MB soldered on logic board

256 bytes of parameter memory

Specifications Memory - 4

VRAM

Clock/Calendar

512K or 1 MB standard, expandable to 1 MB (80 ns or faster

VRAM SIMMs)
Maximum pixel depths for 512K / 1 MB VRAM:
12-inch color (512 x 384) - 16 / 16 bits per pixel
12-inch monochrome (640 x 480) - 8 / 8 bits per pixel
13-inch color (640 x 480) - 8 / 16 bits per pixel
15-inch portrait (640 x 870) - 4 / 8 bits per pixel
16-inch color (832 x 624) - 8 / 16 bits per pixel
19-inch color (1024 x 768) - 4 / 8 bits per pixel
21-inch monochrome (1152 x 870) - 4 / 8 bits per pixel
21-inch color (1152 x 870) - 4 / 8 bits per pixel
VGA (640 x 480) - 8 / 16 bits per pixel
SVGA (800 x 600) - 8 / 16 bits per pixel

CMOS custom chip with long-life lithium battery

Specifications Disk Storage - 5

Disk Storage

Floppy Drive

Hard Drive

CD-ROM Drive

Internal, 1.4 MB Apple SuperDrive

Internal, 3.5 in. hard drive (230, 500, 1000 MB) optional

Internal, CD-300 mechanism optional

Specifications I/O Interfaces - 6

I/O Interfaces

Serial

Video

Ethernet

Two RS-232/RS-422 ports; mini DIN-8 connectors

230.4K baud maximum

0.920 Mbit/sec. if external clock source is provided (modem

interface only)
Asynchronous, synchronous (modem only), and AppleTalk

(printer only) protocols supported

One video port; DB-15 connector
Supports Apple monitors (up to 16 bits), VGA monitors, and NTSC

and PAL video standards

One Ethernet port; AUI-15 connector

Specifications I/O Interfaces - 7

SCSI

NuBus

Expansion

Audio

Apple Desktop Bus

One SCSI port; DB-25 connector
Supports a maximum of eight devices (including the computer,

which is always device 7)

Three slots support standard size cards, burst-mode transfers, a

processor write buffer, and NuBus ‘90; 96-pin Euro-DIN

connectors

One 68040 processor-direct slot (PDS); 140-pin connector

One 8-bit stereo output port; one 8-bit monaural input port;

mini phone jack connectors

Two Apple Desktop Bus (ADB) ports for keyboard, mouse, and

low-speed input devices; mini DIN-4 connectors

Specifications I/O Devices - 8

I/O Devices

Keyboard

Mouse

Microphone

Apple Keyboard, Apple Extended Keyboard, Apple Keyboard II, or

Apple Extended Keyboard II (optional); mini DIN-4 connector

Apple Desktop Mouse or Apple Desktop Mouse II; mini DIN-4

connector

Electret, omnidirectional; output voltage is 4 mV, peak to peak, at

normal value; mini phone plug connector

Specifications Sound and Video - 9

Sound and Video

Video Display

Sound Generator

Built-in VRAM video support for all Apple monitors; two VRAM

expansion slots (one bank)
Supports Apple 16-bit monitors and many non-Apple monitor

types (NTSC, PAL, VGA)
Multiple external color and monochrome monitors through NuBus

expansion slots

Enhanced Apple sound chip (EASC), including four-voice wave-

table synthesis and stereo sampling generator capable of

driving stereo mini-phone-jack headphones or stereo

equipment

Specifications Electrical - 10

Electrical

Line V oltage

Frequency

Maximum Power

100–240 VAC

50–60 Hz, single phase

200 W continuous

Specifications Physical - 11

Physical

Dimensions

Weight

Height: 14.25 in. (360 mm)
Width: 7.75 in. (196 mm)
Depth: 16 in. (396 mm)

24 lb. (11.3 kg)

Specifications Environmental - 12

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

Altitude

50–104° F (10° to 40° C)

-40 to 116.6° F (-40 to 47° C)

5–90% non condensing

0–10,000 ft. (0-3048 m)

K

Service Source

Troubleshooting

Macintosh Quadra 800/WS 80

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 Symptom Charts - 2

Symptom Charts

Error Chords

One-part error
chord sounds during
startup sequence

Two-part error chord
sounds during
startup sequence

1 Disconnect SCSI data cable from hard drive and reboot

system. If startup sequence is normal, initialize hard drive.
If error chord still sounds, replace hard drive.

2 Disconnect floppy drive cable from floppy drive and reboot

system. If startup sequence is normal, replace floppy drive.

3 Replace logic board. Retain customer’s SIMMs.

Perform SIMMs verification.

Troubleshooting Symptom Charts - 3

System

Does not power on;
screen is black, fan is
not running, and LED
is not lit

Clicking, chirping,
or thumping

1 Check power cables.
2 Plug monitor directly into wall socket, and verify that

monitor has power.
3 Replace power cord.
4 Replace power supply.
5 Replace logic board. Retain customer’s SIMMs.

1 Replace power supply.
2 Replace logic board. Retain customer’s SIMMs.
3 Replace floppy drive cable.
4 Replace floppy drive.

Troubleshooting Symptom Charts - 4

System shuts down
intermittently

System

1 Make sure air vents are clear. Thermal protection circuitry

2 Replace power cord.
3 Check battery. Refer to “Battery Verification” in Additional

4 Replace power supply.
5 Replace logic board. Retain customer’s SIMMs.

(Continued)

may shut down system. After 30 to 40 minutes, system

should be OK.

Procedures.

Troubleshooting Symptom Charts - 5

System
intermittently
crashes or hangs

During startup,
following message is
displayed, “This
startup disk will not
work on this
Macintosh model...”

System

1 Verify that system software is version 7.1 or later.
2 Verify that software is known-good.
3 Verify that software is System 7 compatible.
4 Clear parameter RAM. Hold down <Command> <Option> <P>

5 Replace SIMMs.
6 Replace logic board. Retain customer’s SIMMs.
7 Replace power supply.

1 Verify that startup disk is good.
2 Attach LED cable to logic board.
3 Replace LED cable.
4 Replace logic board. Retain customer’s SIMMs.

(Continued)

<R> during startup but before “Welcome To Macintosh”

appears.

Troubleshooting Symptom Charts - 6

Video

Screen is black, audio
and drive operate, fan
is running, and LED is
lit

1 Adjust brightness on monitor.
2 Replace monitor. Refer to appropriate monitor manual to

troubleshoot defective monitor.
3 Replace video cable.
4 If video interface card is installed, move it to different slot.
5 Replace video card, if installed.
6 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome To Macintosh”

appears.
7 Replace SIMMs.
8 Replace logic board. Retain customer’s SIMMs.
9 Replace power supply.

Troubleshooting Symptom Charts - 7

Screen is black, audio
and drive do not
operate, but fan is
running and LED is lit

Partial or whole
screen is bright and
audio is present, but
no video information
is visible

Video

1 Replace video cable.
2 If video interface card is installed, move it to different slot.
3 Replace video interface card, if installed.
4 Replace SIMMs.
5 Replace logic board. Retain customer’s SIMMs.
6 Replace power supply.

1 Replace monitor. Refer to appropriate monitor manual to

2 Replace video cable.
3 If video interface card is installed, move it to different slot.
4 Replace video interface card, if installed.
5 Clear parameter RAM. Hold down <Command> <Option> <P>

6 Replace logic board. Retain customer’s SIMMs.

(Continued)

troubleshoot defective monitor.

<R> during startup but before “Welcome To Macintosh”

appears.

Troubleshooting Symptom Charts - 8

Floppy Drive

Internal floppy drive
does not operate

During system
startup, disk ejects;
display shows icon
with blinking “X”

1 Replace disk with known-good floppy disk.
2 Replace floppy drive cable.
3 Replace floppy drive.
4 Replace logic board. Retain customer’s SIMMs.
5 Replace power supply.

1 Replace disk with known-good system disk.
2 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome To Macintosh”

appears.
3 Replace floppy drive cable.
4 Replace floppy drive.
5 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts - 9

Floppy Drive

Does not eject disk 1 Switch off computer. Hold mouse button down while you

switch computer on.
2 Replace floppy drive cable.
3 Replace floppy drive.
4 Replace logic board. Retain customer’s SIMMs.

Attempts to eject
disk, but doesn’t

1 Push disk completely in.
2 Reseat floppy drive bezel and drive so bezel slot aligns

correctly with drive.
3 Eject disk manually.
4 Replace floppy drive.

(Continued)

Troubleshooting Symptom Charts - 10

Internal floppy drive
runs continuously

MS-DOS drive does
not recognize a disk
formatted on a 1.4 MB
drive

Floppy Drive

1 Replace disk with known-good floppy disk.
2 Replace floppy drive cable.
3 Replace floppy drive.
4 Replace logic board. Retain customer’s SIMMs.

To read and write files with either MS-DOS or 1.4 MB drive,
format all disks with MS-DOS drive first.

(Continued)

Troubleshooting Symptom Charts - 11

Hard Drive

Single internal hard
drive does not
operate; drive
doesn’t spin

No internal SCSI
drives operate

Works with internal
or external SCSI
devices but not with
both

1 Replace hard drive power cable.
2 Replace hard drive.
3 Replace power supply.

1 Verify there are no duplicate SCSI device addresses.
2 Replace SCSI data cable.
3 Replace power supply.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify there are no duplicate SCSI device addresses.
2 Replace terminator on external SCSI device.
3 Verify that SCSI device at end of internal SCSI data cable is

only device terminated.
4 Refer to appropriate manual to troubleshoot defective

external device.

Troubleshooting Symptom Charts - 12

Drive does not appear
on the desktop

Hard Drive

1 Verify there are no duplicate SCSI device addresses.
2 Update the SCSI device driver using Apple HD SC Setup. Run

Disk First Aid to verify the condition of the drive’s directory

structure.
3 Replace the SCSI hard drive cable.
4 If drive is not initialized, use HD SC Setup to initialize.
5 Replace with known-good hard drive. If the hard drive still

doesn’t work, switch back to the original hard drive and

replace the logic board.

(Continued)

Troubleshooting Symptom Charts - 13

Peripherals

Cursor does not move 1 Check mouse connection.

2 Inspect inside of mouse for buildup of dirt or other

contaminants. Clean mouse if necessary.
3 If mouse was connected to keyboard, connect mouse to

computer ADB port instead. If mouse works, replace

keyboard.
4 If mouse does not work in any ADB port on computer, replace

mouse.
5 Replace logic board. Retain customer’s SIMMs.

Cursor moves, but
clicking mouse
button has no effect

1 Replace mouse.
2 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts - 14

Double-click doesn’t
open application,
disk, or server

No response to any
key on keyboard

Peripherals

1 Remove duplicate system folders.
2 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome To Macintosh”

appears.
3 If mouse was connected to keyboard, connect mouse to

computer ADB port instead. If mouse works, replace

keyboard.
4 If mouse does not work in any ADB port on computer, replace

mouse.
5 Replace logic board. Retain customer’s SIMMs.

1 Check keyboard connection to ADB port.
2 Replace keyboard cable.
3 Replace keyboard.
4 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts - 15

Known-good serial
printer does not work

Known-good network
printer does not print

Peripherals

1 Verify that system software is version 7.1 or later.
2 Verify that Chooser is set correctly.
3 Replace printer interface cable.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify that system software is version 7.1 or later.
2 Verify that Chooser is set correctly.
3 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts - 16

Miscellaneous

No sound from
speaker

1 Verify that volume setting in Control Panel is 1 or above.
2 Replace speaker.
3 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts - 17

CD-ROM Drive

CD-ROM drive does
not accept compact
disc

Macintosh does not
display CD-ROM
drive icon

1 Exchange disc.
2 Replace CD-ROM drive mechanism.

1 Verify that CD-ROM software is installed.
2 Replace CD-ROM drive mechanism.
3 Replace SCSI data cable.
4 Replace power supply.

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Service Source

T ak e Apart

Macintosh Quadra 800/WS 80

Take Apart Cover - 1

Cover

Cover

No preliminary steps are
required before you begin
this procedure.

1 Loosen the four captive

cover screws.

2 Slide the cover forward

about 1/2 inch and lift
the cover from the
computer.

Cover
Screw

Take Apart Floppy Drive - 2

Floppy Drive

Before you begin, remove
the cover.

Floppy Drive

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Floppy Drive - 3

1 Press down the retaining

clip and slide the floppy
drive forward about 2
inches.

2 Disconnect the floppy

drive cable from the
floppy drive.

3 Remove the floppy drive

from the chassis.

Replacement Note:

recommends dust shields on

1.4 MB SuperDrives in the
Macintosh Quadra 800. All

1.4 MB replacement drives
ship with dust shields
installed.

Apple

Take Apart Hard Drive - 4

Hard Drive

Before you begin, remove
the cover.

Hard Drive

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Hard Drive - 5

1 Disconnect the SCSI data

cable and hard drive
power cable from the
hard drive.

2 Press down the retaining

clip securing the hard
drive and slide the hard
drive out.

Replacement Note:

information on removing the
hard drive from the carrier
and returning drives,
cables, and carriers to
Apple, refer to Additional
Procedures in the Hard
Drives manual.

For

Take Apart CD-ROM Drive - 6

CD-ROM Drive

Before you begin, remove
the cover.

CD-ROM Drive

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart CD-ROM Drive - 7

1 Disconnect the SCSI data

cable, audio cable, and
CD-ROM drive power
cable from the CD-ROM
drive.

Audio Cable

2 Pull up on the retaining

clip securing the CD­ROM drive and slide the
CD-ROM drive out.

Retaining Clip

Replacement Note:

Be sure
to remove the CD-ROM drive
from the carrier prior to
returning the drive to Apple.

Take Apart DDS-DC Tape Drive - 8

DDS-DC Tape Drive

Before you begin, remove
the cover.

DDS-DC
Tape Drive

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart DDS-DC Tape Drive - 9

1 Disconnect the SCSI data

cable and tape drive

SCSI Data Cable

power cable from the
tape drive.

Tape Drive Power Cable

Take Apart DDS-DC Tape Drive - 10

2 Press down the retaining

clip securing the tape
drive and slide the tape
drive out.

Tape Drive

Replacement Note:

Be sure
to remove the tape drive
from the carrier prior to
returning the drive to Apple.

Take Apart Logic Board - 11

Logic Board

Before you begin, remove
the cover.

Logic Board

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Logic Board - 12

1 Remove the reset/

interrupt actuator.

2 Remove the screw

securing the logic board.

Take Apart Logic Board - 13

Slot

3 Slide the logic board

forward until the slot
indicated lines up with
the tab.

4 Lift the latch at the rear

of the logic board and
release the logic board.

Latch

Take Apart Logic Board - 14

5 Pivot the front of the

logic board out of the
chassis.

6 Disconnect these cables

from the logic board:

• Logic board power

• Speaker cable

• LED cable

• SCSI data cable

• Floppy drive cable

• CD-ROM audio cable
(if present)

Replacement Note:

sure to reconnect the
LED cable to the logic
board to ensure proper
system operation.

Be

Take Apart Power Supply - 15

Power Supply

Before you begin, remove
the cover.

Power Supply

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Power Supply - 16

1 Remove the chassis

support brace.

Chassis Support

Brace

Take Apart Power Supply - 17

2 Disconnect the logic

board power cable.

Logic Board
PowerCable

Take Apart Power Supply - 18

3 Press the latch to

release the power
supply.

Latch

Take Apart Power Supply - 19

4 Slide the power supply

forward.

5 Pull the power supply

out of the computer.

Take Apart Speaker - 20

Speaker

Before you begin, remove

Speaker

the cover.

Caution:

precautions in Bulletins/
Safety.

1 Disconnect the speaker

Review the ESD

cable from the logic
board.

Take Apart Speaker - 21

2 Press the latch holding

the speaker housing to
the chassis and lift the
front of the speaker
housing.

3 Pull the speaker

housing from the clips at
the rear of the chassis.

Latch

Take Apart Rear Cover - 22

Rear Cover

Before you begin, remove
the following:

• Cover

• Speaker

Rear Cover

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Take Apart Rear Cover - 23

1 Lift the two latches and

pull the rear cover
loose.

Latch

Take Apart Rear Cover - 24

2 Remove the rear cover

from the computer.

K

Service Source

Upgrades

Macintosh Quadra 800/WS 80

Upgrades Expansion Cards - 1

Expansion Cards

Before you begin, remove
the cover.

NuBus Card
Retainer

Caution:

precautions in Bulletins/
Safety.

1 Pinch the two handles

Review the ESD

and remove the NuBus
card retainer.

Upgrades Expansion Cards - 2

2

Caution:

on both sides of the card
to avoid bending the
connector pins.

Carefully grasp each end
of the card and pull
straight out to remove it.

Note:

of the card by the metal
bracket.

Pull up evenly

Grab the left side

Replacement Caution:

replacing the card, do not
force it into the expansion
slot. If the card does not seat
properly, remove it and try
again.

When

Upgrades CD-ROM Upgrade - 3

CD-ROM Upgrade

Before you begin, remove
the cover.

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Upgrades CD-ROM Upgrade - 4

Upper Blank Bezel

1 Remove the upper blank

bezel from the top cover.

Upgrades CD-ROM Upgrade - 5

CD-ROM Drive Bezel

2 Install the slotted CD-

ROM drive bezel in the
top cover.

Upgrades CD-ROM Upgrade - 6

3 Attach the CD-ROM

CD-ROM Carrier

carrier to the CD-ROM
drive with four Phillips
screws.

CD-ROM Drive

Upgrades CD-ROM Upgrade - 7

4 Verify the three jumper

connectors are installed

Jumper Connectors

as shown.

Important:

These
jumpers configure the
SCSI device address of
the CD-ROM drive. The
CD-ROM drive will have
a SCSI device ID of 3.
Verify that no other SCSI
device installed in the
computer already has
that address. If another
device does have an ID of
3, change the ID prior to
installing the CD-ROM
drive.

Upgrades CD-ROM Upgrade - 8

5 Slide in the CD-ROM

CD-ROM Drive and Carrier

drive and carrier.

Upgrades CD-ROM Upgrade - 9

CD-ROM Drive Power Cable

Audio Cable

SCSI Data Cable

6 Connect these cables to

the CD-ROM drive:

• Audio cable

• SCSI data cable

• CD-ROM drive power

cable

Upgrades Power Macintosh Upgrade - 10

Power Macintosh Upgrade

The Macintosh Quadra 800
can be upgraded to a Power
Macintosh 8100/80 or
Power Macintosh 8100/
80AV. The AWS 80 can be
upgraded to a Workgroup
Server 8150.

For upgrade instructions,
refer to Upgrades in the
Power Macintosh 8100/WS
8150 manual.

Upgrades Power Macintosh Card - 11

Power Macintosh Card

Before you begin, remove
the cover and review the
ESD precautions in
Bulletins/Safety.

Installing this card in the
Processor-Direct Slot
(PDS) upgrades this
68040 computer to a
PowerPC microprocessor.

For installation
instructions, refer to the
Basics chapter in the Power
Macintosh Card manual.

Upgrades Power Macintosh 8500 Upgrade - 12

Power Macintosh 8500 Upgrade

The Power Macintosh 8500 Upgrade Kit can be used to
upgrade a Quadra 800, Quadra 840, or a Power Macintosh

8100. The kit includes everything except:

• The peripherals (such as the hard drive, floppy drive,
and CD-ROM drive), which must be transferred from
the original unit you are upgrading

• A processor card, which must be purchased separately.

Refer to the appropriate Take Apart chapter (that is, the
Take Apart chapter in the Quadra 800, Quadra 840AV, or
Power Macintosh 8100 manual) for instructions on how to
remove the drives from the original unit.

Refer to the Take Apart chapter in the Power Macintosh
8500/WS 8550 manual to see where the peripherals should
be installed in the upgraded unit and for instructions on how

Upgrades Power Macintosh 8500 Upgrade - 13

to install the processor card.

Once you have installed all the drives in the upgraded unit
and replaced the top housing, copy the serial number from
the original unit to the blank serial label on the upgraded
unit.

Upgrades WorkGroup Server 8550/132 Upgrade - 14

WorkGroup Server 8550/132 Upgrade

The WorkGroup Server 8550/132 Upgrade Kit can be used
to upgrade a WorkGroup Server 80, 8150/80, or 8150/

110. The kit includes everything except:

• The peripherals (such as the hard drive, floppy drive,
and CD-ROM drive), which must be transferred from
the original unit you are upgrading

• Drive carriers

• Drive bezels

• Drive shields

• Speaker

• CD-ROM audio cable

• Floppy drive cable

• Power supply to logic board cable

• Chassis support bracket

• DRAM DIMMs

Upgrades WorkGroup Server 8550/132 Upgrade - 15

All of the part listed above, except for the DRAM DIMMs,
need to be removed from the original unit and installed in the
upgraded unit. Refer to the Take Apart chapter for the
product from which you are upgrading for instructions on
how to remove these parts. Refer to the Take Apart chapter
in the Power Macintosh 8500/WS 8550 manual to see
where the peripherals should be installed in the upgraded
unit.

Note:

The WS 8550 logic board in the upgrade kit does not
contain any DRAM. You must install 64 bit-wide, 168-pin
DRAM DIMMs. The DIMMs should be fast-paged mode, 70 ns
or faster. You can use 8, 16, 32, or 64 MB DIMMs, which
can be installed in any configuration. For the best
performance, however, the DIMMs should be installed in
pairs of the same size into paired slots. The slower 80 ns
SIMMs and DIMMs used in older Macintosh computers will
not work reliably in the WS 8550.

Upgrades WorkGroup Server 8550/132 Upgrade - 16

Once you have installed all the necessary parts in the
upgraded unit and replaced the top housing, copy the serial
number from the original unit to the blank serial label on
the upgraded unit.

Note

: The WorkGroup Server 8550/132 Upgrade Kit does

not include a hard drive bracket.

K

Service Source

Additional Procedures

Macintosh Quadra 800/WS 80

Additional Procedures Battery Verification - 1

Battery Verification

Before you begin, remove
the following:

Battery

• Cover

• Logic board

±

Warning:

discarded improperly, the
lithium battery could
explode. Review handling
and disposal instructions in
Bulletins/Safety.

If handled or

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Additional Procedures Battery Verification - 2

1 Set the voltmeter to the

10 volts DC scale.

2 Hold the positive probe

of the voltmeter to the
positive end of the
battery (marked “+”
on the logic board) and
the negative probe to the
negative end of the
battery.

3 If the battery voltage is

below 3.2 volts, replace
the battery. Refer to
“Battery Replacement”
in this chapter.

Additional Procedures Battery Replacement - 3

Battery Replacement

Before you begin, remove
the following:

Battery

• Cover

• Logic board

±

Warning:

discarded improperly, the
lithium battery could
explode. Review handling
and disposal instructions in
Bulletins/Safety.

If handled or

Caution:

precautions in Bulletins/
Safety.

Review the ESD

Additional Procedures Battery Replacement - 4

1 Using a small flat-blade

screwdriver, pry open
the latch at the end of the
battery holder and lift
off the cover.

Additional Procedures Battery Replacement - 5

2 Grasp the battery and

remove it from the
holder.

3 Return the battery to

Apple for proper
disposal. For battery
packaging and labeling
instructions, refer to
Bulletins/Safety.

K

Service Source

Exploded V ie w

Macintosh Quadra 800/WS 80

Exploded View 1

Top Housing

Thumbscrew

Panel

922-0362

Power

Supply

Cable

922-0837

922-0395

Rear

Speaker

Housing

922-0394

SCSI

Cable

922-0839

922-0847

Front
Panel*

Speaker

922-0353

Brace

922-0396

CD-ROM Bezel

Trayloading

922-0811

LED

Cable

922-0841

Manual Insert Floppy
Drive Bezel
922-0523

Tape Drive Bezel
922-0969

Logic
Board
661-1676

CD-ROM Bezel
w/Caddy
922-0846

Floppy Drive Bezel
922-0849

Blank Bezel
922-0620

Logic Board
Guard
922-0851

CD-ROM
Audio Cable
922-0842

CD-ROM
Drive
661-0913

CD-ROM
Carrier
922-0850

Floppy Drive
Cable
922-0840

Manual Insert
Floppy Drive
661-0121

Floppy Drive
Carrier
922-0445

Reset

Interrupt

Power

Supply

661-1687

NuBus

Retainer

922-0393

Product family configurations may vary. For parts with asterisk (*), refer to parts list.

Chassis
922-0888

922-0843

Quadra 800/AWS80

Hard Drive *

Hard Drive
Carrier
922-0621

Tape Drive
661-0795

Tape Drive
Carrier
922-0621