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.