Apple PowerBook 140 Service Manual

K

Service Source

PowerBook 140/145/

145B/170

PowerBook 140, PowerBook 145,

PowerBook 145B, PowerBook 170

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Service Source

Basics

PowerBook 140/145/145B/170

Basics Overview - 1

Overview

This manual includes
complete repair procedures
for the PowerBook 140,
PowerBook 145 and 145B,
and the PowerBook 170.

Figure: PowerBook 140, 145, 145B, 170

Basics Display Compatibility Matrix - 2

Display Compatibility Matrix

Active Matrix
PB 170
661-0711

Inverter 699-0273 699-0271 699-0272 922-0025

Display Cable 630-6273 922-0820 630-6272 922-0820

Inverter Cable 936-0106 936-0106 936-0106 936-0106

Important:

active matrix and three FSTN displays. Each of these
displays requires a compatible inverter and display cable;
the inverters, display cables, and displays are not
interchangeable. Before ordering a replacement display,
display cable, or inverter, refer to the display matrix.

FSTN, Rev. A
PB 140/145
661-0706

The PowerBook family includes four displays—an

FSTN, Rev. B
PB 140/145
661-0681

FSTN, Rev. C
PB 145/145B
661-0745

Basics Displays - 3

Displays

Each of the four displays
requires a compatible
inverter and display cable.
Refer to the following pages
to identify the displays.

Basics Displays - 4

Active-Matrix Display

The active-matrix display is
available for the PowerBook
170 only. Use the following
replacement parts with the
PowerBook 170:

• Active Matrix Display
661-0711

• Inverter (green)
699-0273

• Display Cable
630-6273

• Inverter Cable
936-0106

Basics Displays - 5

FSTN Display, Rev. A

Rev. A, B, and C FSTN
displays are available for
the PowerBook 140/145/
145B. The Rev. A display
has a plastic rear cover, and
the display cable connector
is located along the outside
edge of the printed circuit
board.

Basics Displays - 6

If you are replacing the
inverter, display cable, or
Rev. A display in a
PowerBook 140/145, use
these replacement parts:

• FSTN Display, Rev. A
661-0706

• Inverter (blue)
699-0271

• Display Cable
922-0820

• Inverter Cable
936-0106

Basics Displays - 7

FSTN Display, Rev. B

Rev. A, B, and C FSTN
displays are available for
the PowerBook 140/145/
145B. The printed circuit
board is exposed at the rear
of the Rev. B display, and the
display cable connector is
located near the center of the
board.

Basics Displays - 8

If you are replacing the
inverter, display cable, or
Rev. B display in a
PowerBook 140/145, use
these replacement parts:

• FSTN Display, Rev. B
661-0681

• Inverter (red)
699-0272

• Display Cable
630-6272

• Inverter Cable
936-0106

Basics Displays - 9

FSTN Display, Rev. C

Rev. A, B, and C FSTN
displays are available for
the PowerBook 140/145/
145B. The Rev. C display
has a plastic rear cover, and
the display cable connector
is located along the outside
edge of the printed circuit
board.

Basics Displays - 10

If you are replacing the
inverter, display cable, or
Rev. C display in a
PowerBook 145/145B, use
these replacement parts:

• FSTN Display, Rev. C
661-0745

• Inverter (blue)
922-0025

• Display Cable
922-0820

• Inverter Cable
936-0106

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Service Source

Specifications

PowerBook 140/145/145B/170

Specifications Processor - 1

Processor

140 CPU

145/145B/170 CPU

Coprocessor (170 Only)

Addressing

Motorola 68030 microprocessor
16 MHz

Motorola 68030 microprocessor
25 MHz

Motorola 68882 floating-point unit (FPU)
25 MHz

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

Specifications Memory - 2

Memory

RAM

RAM 145B

ROM

PRAM

VRAM

4 MB, 2 MB installed on the daughterboard and 2 MB on an

expansion card

Expandable to 6 MB by replacing 2 MB expansion card with 4 MB

card

4 MB pseudostatic RAM (PSRAM) installed on the daughterboard
Expandable to 8 MB by installing 4 MB expansion card

1 MB, expandable to 4 MB

256 bytes of parameter memory

256K of static video display memory

Specifications Memory - 3

Clock/Calendar

Custom chip with long-life lithium battery

Specifications Disk Storage - 4

Disk Storage

Floppy Drive

Hard Drive

19 mm high, 1.4 MB Apple SuperDrive

2.5 in., 40/80/120 MB hard drive

Specifications I/O Interfaces - 5

I/O Interfaces

Floppy Drive

SCSI

Apple Desktop Bus

Serial

DB-19 serial port for connecting external floppy drives

HDI-30 SCSI port with 1.5 MB/sec. transfer rate
Supports up to five external SCSI devices
Does not provide termination power

Apple Desktop Bus (ADB) port (maximum of three ADB devices is
recommended)
200 mA maximum current draw for all ADB devices

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

Specifications I/O Interfaces - 6

Sound

Monaural sound-in port
Stereo sound-out headphone jack that plays CD audio tracks in

stereo and computer-generated sounds in mono

Specifications I/O Devices - 7

I/O Devices

Keyboard

Trackball

Microphone (140/ 145/170)

Built-in standard Apple keyboard
63 keys domestic; 64 keys ISO
Two-level tilt adjustment

30 mm diameter, dual button
ADB interface

Electret, omnidirectional
Output voltage of 4 mV, peak to peak

Specifications Sound and Video - 8

Sound and Video

Video Display 140/ 145/145B

Video Display 170

Sound Generator

10 in. (254 mm) diagonal screen
Flat-panel, film-compensated supertwist nematic (FSTN) liquid

crystal display
CCFL on-demand backlight
640 by 400 pixels

10 in. (254 mm) diagonal screen
Flat-panel, active-matrix liquid crystal display
CCFL on-demand backlight
640 by 400 pixels

Apple sound chip provides 8-bit sound capable of driving stereo

headphones or other stereo equipment through the sound jack

Specifications Electrical - 9

Electrical

Main Battery

PRAM Battery

Power Adapter

Nickel cadmium (NiCad), 2.5 Ah
Provides 2-3 hours of usage before recharging
Recharge time: 3 hours
500 power cycles capacity

3 V lithium

110–240 VAC line voltage
50–60 Hz
US, Japanese, United Kingdom, Australian, and European versions

Specifications Physical - 10

Physical

Dimensions

Weight

Height: 2.25 in. (5.7 cm)
Width: 11.25 in. (28.6 cm)
Depth: 9.3 in. (23.6 cm)

6.8 lb. (3.1 kg) with battery

Specifications Environmental - 11

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

Altitude

50–104° F (10–40° C)

50–140° F (10–60° C)

20–80% noncondensing

0–15,000 ft. (0–4722 m)

Specifications Other - 12

Other

Fax/Data Modem

Internal 2400-baud modem with fax send at 9600 baud (includes

fax send software)
300/1200/2400 bps transmission rates
Serial binary and asynchronous protocols
Fax communication: V.29
Error correction: V.42 and MNP 4
Data compression: V.42bis and MNP 5

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Service Source

Troubleshooting

PowerBook 140/145/145B/170

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 Power Manager Reset/ - 2

Power Manager Reset

Reset the power manager if the battery and power adapter are
proven good, but the computer will not power on. The computer
will not reset after a system crash.

To reset the power manager in a PowerBook 140/145/145B/
170,

• Remove the AC adapter and the battery.

• Let the unit sit without power hooked up for 3-5 minutes.

• Using two paper clips, simultaneously hold down the reset and

interrupt buttons for 5-10 seconds.

• Reinstall the battery and, if necessary, reconnect the AC

adapter.

• Turn on the computer.

Troubleshooting Symptom Charts/Startup - 3

Symptom Charts

Startup

RAM failure occurs
(eight-tone error
chord sequence
sounds after startup
chord)

Hardware failure
occurs (four-tone
error chord sequence
sounds after startup
chord)

1 Replace RAM expansion card.
2 Replace daughterboard.
3 Replace motherboard.

1 Disconnect hard drive data cable and reboot system. If

startup sequence is normal, replace hard drive.

2 Disconnect floppy drive cable and reboot system. If startup

sequence is normal, replace floppy drive.

3 Replace motherboard.

Troubleshooting Symptom Charts/Startup

(Continued)

- 4

Screen displays
checkerboard pattern;
no startup chime

Startup

1 Reseat RAM expansion card.
2 Replace RAM expansion card.
3 Replace daughterboard.
4 Reseat display cable.

(Continued)