Apple macintosh se.30 Service Manual

K

Service Source

Macintosh SE/30

K

Service Source

Basics

Macintosh SE/30

Basics Overview - 1

Overview

This manual includes
complete repair procedures
for the Macintosh SE/30,
shown at left.

Figure: Macintosh SE/30

K

Service Source

Specifications

Macintosh SE/30

Specifications Processor - 1

Processor

CPU

Coprocessor

Motorola 68030 microprocessor

15.667 MHz
32-bit architecture
256-byte instruction and data caches
Built-in paged memory management unit (PMMU)

Motorola 68882 floating-point unit (FPU); follows IEEE

standards

Specifications Memory - 2

Memory

RAM

ROM

PRAM

1 or 4 MB, expandable to 32 MB
Upgradeable to 5 MB

256K

256 bytes of user-set parameter memory
CMOS custom chip with long-life lithium battery

Specifications Disk Storage - 3

Disk Storage

Floppy Drive

Hard Drive

1.4 MB floppy drive

Optional 40 or 80 MB hard drive

Specifications I/O Interfaces - 4

I/O Interfaces

Expansion

SCSI

Apple Desktop Bus

Serial

Sound

One 030 direct slot supporting full 32-bit address and data lines

through 120-pin Euro-DIN connector

One 50-pin connector (internal) and one DB-25 connector

(external)

Two Apple Desktop Bus (ADB) ports for communication with

keyboard, mouse, and other input devices over low-speed,
synchronous serial bus

Two RS-232/RS-422 serial ports; 230.4 Kbaud maximum

Stereo sound port for external audio amplifier

Specifications I/O Devices - 5

I/O Devices

Keyboards

Mouse

Apple Keyboard
Apple Extended Keyboard

Mechanical tracking; ADB connector; optical shaft or contact

encoding at 3.94 ± 0.39 pulse per mm (100 ± 10 pulses per
in.) of travel

Specifications Sound and Video - 6

Sound and Video

Sound Generator

Video Display

Apple Sound Chip (ASC) including four-voice, wavetable

synthesis and stereo sampling generator capable of driving
stereo mini-phone-jack headphones or other stereo equipment

Mixed stereo monophonic sound output through internal speaker

Built-in, 9-in. (diagonal) screen; high-resolution, 512 by 342

pixel, bit-mapped display

Color QuickDraw in ROM provides support for grayscale and color

video cards installed in the 030 direct slot

Specifications Electrical - 7

Electrical

Line V oltage

Frequency

Maximum Power

120–240 VAC, RMS automatically configured

48–62 Hz, single phase

75 W

Specifications Physical - 8

Physical

Dimensions

Weight

Height: 13.6 in. (34.5 cm)
Width: 9.6 in. (24.4 cm)
Depth: 10.9 in. (27.6 cm)

21.5 lb. (9.75 kg)

K

Service Source

Troubleshooting

Macintosh SE/30

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 drive operate

Screen is bright and
audio is present, but
no video information
is visible

1 Turn brightness control clockwise.
2 Check video cable connections.
3 Replace analog board.
4 Replace video board.
5 Replace logic board. Retain customer’s SIMMs.
6 Replace CRT.

1 Replace analog board.
2 Replace video board.
3 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts/Video

(Continued)

- 3

Screen is completely
dark and fan is not
running

Single vertical line is
displayed

Single horizontal line
is displayed

Video

1 Replace power supply.
2 Replace analog board.

1 Replace analog board.
2 Replace video board.
3 Replace logic board. Retain customer’s SIMMs.
4 Replace CRT.

1 Replace analog board.
2 Replace video board.
3 Replace logic board. Retain customer’s SIMMs.
4 Replace CRT.

(Continued)

Troubleshooting Symptom Charts/Video

(Continued)

- 4

Vertical bars or
stripes are displayed

Horizontal bars or
stripes are displayed

White dot is displayed
in center of screen

Screen jitters at top
left and/or lower
right

Video

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

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

1 Verify that yoke cable is connected.
2 Replace analog board.
3 Replace CRT.

Replace analog board.

(Continued)

Troubleshooting Symptom Charts/Peripheral - 5

Peripheral

Cursor does not move 1 Check mouse connection.

2 Inspect inside of mouse for buildup of dirt and other

contaminants. Clean mouse if necessary.
3 Reset PRAM.
4 If mouse was connected to keyboard, connect it to ADB port

instead. If mouse works, replace keyboard.
5 If mouse does not work in any ADB port, replace mouse.
6 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/Peripheral

(Continued)

- 6

Cannot double-click
to open application,
disk, or server

Peripheral

1 Remove any multiple system files on hard drive.
2 Clear parameter RAM. (System 7: Hold down <Command>

<Option> <P> <R> during startup but before “Welcome to

Macintosh” appears. System 6: Hold down <Command>

<Option> <Shift> keys and select Control Panel from Apple

pull-down menu.) Reset mouse controls.
3 If mouse was connected to keyboard, connect it to ADB port

instead. If mouse works, replace keyboard.
4 If mouse does not work in any ADB port, replace mouse.
5 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts/Peripheral

(Continued)

- 7

Known-good
LaserWriter does not
print

No response to any
key on keyboard

Peripheral

1 Make sure that Chooser and Control Panel are set correctly.
2 Make sure correct version of system software is being used.

Make sure software is known-good.
3 Reset PRAM.
4 Refer to Networks and Communications manual.

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/Peripheral

(Continued)

- 8

Known-good
ImageWriter or
ImageWriter II does
not print

Peripheral

1 Make sure that Chooser and Control Panel are set correctly.
2 Make sure correct version of system software is being used.

Make sure software is known-good.
3 Reset PRAM.
4 Replace printer interface cable.
5 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts/Floppy Drive - 9

Floppy Drive

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

External floppy drive
does not operate

Disk ejects; display
shows icon with
blinking “X”

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

1 Replace bad disk.
2 Make sure external floppy drive is on right side of Macintosh

SE/30.
3 Replace external drive.
4 Replace logic board. Retain customer’s SIMMs.

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

Troubleshooting Symptom Charts/Floppy Drive

(Continued)

- 10

Floppy Drive

Unable to insert disk
all the way

Internal floppy drive
runs continuously

Does not eject disk 1 Insert opened paper clip into hole beside drive.

1 Insert opened paper clip into hole beside drive.
2 Switch off system power and hold mouse button down while

switching power back on (to complete eject cycle).
3 Replace floppy drive.

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

2 Switch off system and hold mouse button down while

switching system back on (to complete eject cycle).
3 Replace floppy drive.

(Continued)

Troubleshooting Symptom Charts/Hard Drive - 11

Hard Drive

Internal or external
hard drive does not
operate

Works with internal
or external SCSI
device but not with
both

1 Verify that SCSI loopback card is not attached.
2 Replace hard drive data cable.
3 Replace hard drive.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify SCSI device switch setting on external device.
2 Replace terminator on external device.
3 Verify that terminator is installed on internal hard drive.
4 Replace hard drive select cable.

Troubleshooting Symptom Charts/Miscellaneous - 12

Miscellaneous

Clicking, chirping,
or thumping sound

Smoke/odor 1 Replace power supply.

No video, no audio, and
no drive operation

1 Verify analog board cable is connected at J12 on logic board.
2 Replace power supply.
3 Replace analog board.
4 Replace logic board. Retain customer’s SIMMs.

2 Replace analog board.

1 Connect power cord.
2 Switch power on.
3 Replace power cord.
4 Replace power supply.
5 Replace analog board.
6 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts/Miscellaneous

(Continued)

- 13

Miscellaneous

“Sad Macintosh” icon 1 Replace bad disk.

2 Replace SIMM(s) if code matches any of those given in

“Isolating a Faulty SIMM” in Hardware/Memory.
3 Replace logic board. Retain customer’s SIMMs.

“Sad Macintosh” icon
and black vertical
line are displayed;
screeching sound

Replace logic board. Retain customer’s SIMMs.

(Continued)

K

Service Source

T ak e Apart

Macintosh SE/30