Apple Macintosh Powermac Performa 600 Service Manual

K

Service Source

Macintosh IIvx, IIvi,

Performa 600

Macintosh IIvx, Macintosh IIvi, Performa 600

K

Service Source

Basics

Macintosh IIvx, Macintosh IIvi,

Performa 600

Basics Overview - 1

Overview

This manual includes
complete repair procedures
for the Macintosh IIvx,
Macintosh IIvi, and
Performa 600.

Figure: Macintosh IIvx, IIvi, and Performa 600

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Service Source

Specifications

Macintosh IIvx, Macintosh IIvi,

Performa 600

Specifications Processors - 1

Processors

CPU

Coprocessor

Cache

Addressing

Motorola 68030 microprocessor
Built-in memory management unit (MMU)
Macintosh IIvi: 16 MHz
Macintosh IIvx, Performa 600: 32 MHz

Macintosh IIvx: Motorola 68882 floating-point unit (FPU)

Macintosh IIvx: 32K

32-bit internal registers
32-bit address bus
32-bit data bus

Specifications Memory - 2

Memory

RAM

ROM

PRAM

VRAM

With 512K VRAM, these video modes are supported:

With 1 MB VRAM, these video modes are supported:

4, 5, or 8 MB, expandable to 68 MB

1 MB

256 bytes of parameter memory

512K or 1 MB, upgradable to 1 MB

• 512 by 384 pixel screens with 2, 4, 8, and 16 bits per pixel

• 640 by 480 pixel screens with 2, 4, and 8 bits per pixel

• 512 by 384 pixel screens with 2, 4, 8, and 16 bits per pixel

• 640 by 480 pixel screens with 2, 4, 8, and 16 bits per pixel

Specifications Disk Storage - 3

Disk Storage

Floppy Drive

Hard Drive

CD-ROM Drive

1.4 MB floppy drive

80–400 MB hard drive

Optional CD-ROM drive

Specifications 1/O Interfaces - 4

1/O Interfaces

Expansion

SCSI

Apple Desktop Bus

Serial

Three NuBus slots
One accelerator slot

One SCSI port; DB-25 connector
Supports a maximum of six external devices

Two Apple Desktop Bus (ADB) ports
Low-speed synchronous serial interface

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

230.4 Kbaud maximum

0.92 Mbit/sec., if external clock source is provided

Specifications 1/O Interfaces - 5

Sound

Video

One sound output port for stereo playback from CDs
Monaural input port

One video port DB-15 connector
Supports Apple monitors (8-bit)

Specifications I/O Devices - 6

I/O Devices

Keyboard

Mouse

Microphone

Standard or Extended Keyboard connected through Apple Desktop

Bus (ADB) ports (mini DIN-4)
Maximum power draw for all ADB devices: 500 mA
Keyboard draws 25–80 mA

ADB mouse
Draws up to 80 mA

Electret, omnidirectional microphone
Microphone output voltage is 4 mV peak to peak at normal

speaking volume

Specifications Sound and Video - 7

Sound and Video

Apple Monitor

Third-Party Monitors

Sound

Macintosh IIvi/vx and Performa 600 video support includes these

Apple monitors:

• Apple Color Display

• Macintosh 12-in. Monochrome Display

• Macintosh 12-in. RGB Display

• AppleColor High-Resolution RGB Monitor

• Apple Performa Display/Plus

Nubus video cards allow the computer to support other non-Apple

VGA, NCST, and PAL monitors

Custom Sound Chip drives stereo miniature headphone jack

Specifications Electrical - 8

Electrical

A/C Line Input

A/C Line Output

DC Power

Line voltage: 100–120 VAC
Power: 200 W

Output receptacle: 100–240 VAC
3 A maximum

112 W maximum

Specifications Physical - 9

Physical

Temperature

Relative Humidity

Altitude

Operating: 10–40° C (50–104 ° F)
Storage -40 to 47° C (-40 F to 116.6° F)

5–95% noncondensing

Zero to 10,000 ft. (3,048 m)

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Service Source

Troubleshooting

Macintosh IIvx, Macintosh IIvi,

Performa 600

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/Video - 2

Symptom Charts

Video

Screen is dark, audio
and at least one drive
operate, fan is
running, and LED is
lit

Screen is dark, audio
and drive do not
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 Replace VRAM SIMMs.
5 Replace logic board. Retain customer’s SIMMs.

1 Remove peripherals.
2 Remove NuBus cards.
3 Replace DRAM SIMMs.
4 Replace VRAM SIMMs.
5 Replace power supply.
6 Replace logic board.

Troubleshooting Symptom Charts/Video

(Continued)

- 3

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

Screen is completely
dark, fan is not
running, and LED is
not lit

Video

1 Replace monitor. Refer to appropriate monitor manual to

2 Replace video cable.
3 Replace VRAM SIMMs.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify that external power cables are properly connected.
2 Remove peripherals.
3 Remove NuBus cards and switch on power again. (Combined

4 Remove accelerator card.
5 Replace power supply.
6 Replace logic board. Retain customer’s SIMMs.

(Continued)

troubleshoot defective monitor.

NuBus cards should not draw more than 45 watts.)

Troubleshooting Symptom Charts/Floppy Drive - 4

Floppy Drive

Audio and video are
present, but internal
floppy drive does not
operate

Floppy disk ejects,
and display shows Mac
icon with blinking
“X”

Floppy disk does not
eject

1 Replace internal floppy drive cable.
2 Replace internal floppy drive.
3 Replace logic board. Retain customer’s SIMMs.

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

1 Switch off system and hold mouse button down while

switching system on.
2 Eject disk manually.
3 Replace floppy drive cable.
4 Replace floppy drive.

Troubleshooting Symptom Charts/Floppy Drive

(Continued)

- 5

Floppy drive
attempts to eject disk
but doesn’t

Floppy Drive

1 Push floppy disk completely in.
2 Eject floppy disk manually by pushing opened paper clip into

hole beside drive slot.
3 Replace floppy drive.

(Continued)

Troubleshooting Symptom Charts/Hard Drive - 6

Hard Drive

Internal hard drive
runs continuously

Internal hard drive
does not operate

1 Turn off virtual memory if it’s on and check to see if hard

drive stops running. Hard drive runs more with virtual

memory on.
2 Replace SCSI data cable.
3 Replace internal hard drive.
4 Replace logic board. Retain customer’s SIMMs.

1 Replace SCSI data cable.
2 Replace SCSI power cable.
3 Replace hard drive.
4 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts/CD-ROM Drive - 7

CD-ROM Drive

CD-ROM drive does
not accept a compact
disc

Macintosh does not
display CD-ROM
drive icon

1 Exchange disc (if disc is dirty or damaged).
2 Replace CD-ROM drive mechanism.

1 Reinstall CD software, and verify that CD-ROM extensions

are in System Folder.
2 Reinstall system software.
3 Replace CD-ROM drive mechanism.
4 Replace power supply.
5 Replace SCSI data cable.

Troubleshooting Symptom Charts/Peripherals - 8

Peripherals

Works with internal
or external SCSI
device, but does not
work with both

Cursor does not move 1 Reboot computer.

1 Verify that SCSI select switch on any external device is set

differently from any internal SCSI device.
2 Verify that hard drive is terminated but optional CD-ROM is

not terminated.
3 Replace terminator on external SCSI device.
4 Replace SCSI select cable on external SCSI device.

2 Verify that mouse is connected properly.
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.

Troubleshooting Symptom Charts/Peripherals

(Continued)

- 9

Cursor moves, but
clicking the mouse
button has no effect

Double-click does not
open application,
disk, or server

Peripherals

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

1 Remove duplicate system files from hard drive.
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.

(Continued)