Apple powerbook 150 Service Manual
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Service Source
PowerBook 150
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Service Source
Basics
PowerBook 150
Basics General Information - 1
General Information
The PowerBook 150, shown at left, is an all-in-one
notebook computer that features a 68030 processor
running at 33 MHz and a 9.5 inch diagonal backlit FSTN
display. The PowerBook 150 includes a 120 MB internal
hard drive and supports up to six external SCSI devices
through a SCSI port.
The PowerBook 150 internal hard drive is based on IDE
(Intelligent Device Electronics) technology, commonly used
Figure: PowerBook 150
in DOS-compatible systems. The IDE drive functions the
same as a typical SCSI hard drive; it does not affect SCSI ID
selections or SCSI termination schemes.
Basics Rear Panel - 2
Rear Panel
Power
Adapter
Modem SCSI
(HDI-30)
Printer/Modem Reset
Button
Power
Button
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Specifications
PowerBook 150
Specifications Introduction - 1
Introduction
You can also find specifications information for this product in the
Spec Database, which you can access in one of three ways:
Ñ Launch it directly by double-clicking the Apple Spec Database
runtime alias at the top level of the Main Service Source CD.
Ñ Select "Apple Spec Database" from the Service Source drop-
down main menu.
Ñ Click the Acrobat toolbar icon for the database, which is near
the right end of the toolbar with the letters "SP."
Specifications Processor - 2
Processor
CPU
Addressing
Motorola 68030 microprocessor
33 MHz
32-bit internal registers
32-bit address bus
32-bit data bus
Specifications Memory - 3
Memory
RAM
ROM
PRAM
VRAM
Clock/Calendar
4 MB, expandable to 40 MB
1 MB
256 bytes of parameter memory
256K of static video display memory
CMOS custom chip
Specifications Disk Storage - 4
Disk Storage
Floppy Drive
Hard Drive
19 mm high, 1.4 MB Apple SuperDrive
2.5 in., 120 MB IDE hard drive
Specifications I/O Interfaces - 5
I/O Interfaces
SCSI
Serial
HDI-30 SCSI port with 1.5 MB/sec. transfer rate
Supports up to six external SCSI devices
Connect SCSI device to computer with HDI-30 SCSI system cable
One RS-422 serial port; mini DIN-8 connector
Specifications I/O Devices - 6
I/O Devices
Keyboard
Trackball
Built-in standard Apple keyboard
63 keys domestic; 64 keys ISO
18 mm vertical pitch; 18.63 mm horizontal pitch
Two-level tilt adjustment
30 mm diameter, dual button
Apple Desktop Bus (ADB) interface
Specifications Sound and Video - 7
Sound and Video
Video Display
Sound Generator
9.5 in. diagonal screen
Flat-panel, film-compensated supertwist nematic (FSTN) liquid
crystal display
640 lines by 480 pixels
Apple sound chip provides 8-bit sound capable of driving stereo
headphones or other stereo equipment through the sound jack
Specifications Electrical - 8
Electrical
Main Battery
Power Adapter
Nickel cadmium (NiCad) battery
Provides 2Ð4 hours of usage before recharging
110Ð240 VAC line voltage
50Ð60 Hz
US, Japanese, United Kingdom, Australian, and European versions
Specifications Physical - 9
Physical
Dimensions
Weight
Height: 2.3 in. (5.8 cm)
Width: 11.3 in. (28.7 cm)
Depth: 9.3 in. (23.6 cm)
5.5 lb. (2.5 kg) with battery
Specifications Environmental - 10
Environmental
Operating
Temperature
Storage
Temperature
Relative Humidity
Operating Altitude
Shipping Altitude
50Ð95¡ F (10Ð35¡ C)
14Ð140¡ F (-10 to 60¡ C)
20Ð80% noncondensing
0Ð10,000 ft. (0Ð3048 m)
0Ð15,000 ft. (0Ð4722 m)
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Troubleshooting
PowerBook 150
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 150,
• Remove the AC adapter and the battery.
• Using a paper clip, hold down the reset button on the back of the
computer for 5–10 seconds.
• Reconnect the AC adapter and briefly push the reset button
again. You should hear a small pop from the speaker.
• Turn on the computer.
• If the computer powers on, reinstall the battery. If the
computer does not start, it may need servicing.
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 logic board.
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 logic board.
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 Reseat display cable.
(Continued)
Troubleshooting Symptom Charts/Power - 5
Power
Screen is blank;
computer doesn’t
respond
After removing main
battery, some
Control Panel
settings are different
1 Press reset switch.
2 Connect power adapter and reboot computer in 3–4 minutes.
3 Try known–good, charged main battery.
4 Check all interconnect board and logic board connections.
5 Reset the power manager.
6 Replace keyboard.
7 Replace interconnect board.
8 Replace logic board.
1 Replace interconnect board.
2 Replace logic board.
Troubleshooting Symptom Charts/Power
(Continued)
- 6
Power adapter is
plugged in, but
battery DA does not
indicate charger is
connected
Low-power warning
appears
Power
1 Check battery charger connection.
2 Try known-good, charged main battery.
3 Try known-good power adapter.
4 Replace logic board.
1 Recharge battery or attach power adapter.
2 Verify that peripherals are low-power.
3 Reduce use of power-consuming devices or connect power
4 Try known-good, charged main battery.
5 Try known-good power adapter.
6 Replace logic board.
(Continued)
adapter.
Troubleshooting Symptom Charts/Power
(Continued)
- 7
Computer runs when
plugged in to wall
outlet but not on
battery power;
battery voltage is
within tolerance
Power
1 Reseat battery to make sure battery is mating with contacts
2 Replace fuse on logic board.
3 Replace logic board.
4 Return computer to Apple.
(Continued)
on logic board.
Troubleshooting Symptom Charts/Video - 8
Video
Row or partial row of
pixels never comes
on or is always on
Thin white line is
always on at middle of
screen
1 Replace display cable.
2 Replace display.
3 Replace interconnect board.
Thin white line is normal for FSTN screens.
Troubleshooting Symptom Charts/Video
(Continued)
- 9
Display is very light
or totally white
Video
1 Adjust screen contrast.
2 Adjust screen brightness.
3 Check display cable, inverter board, interconnect board, and
4 Replace inverter board.
5 Replace interconnect board.
6 Replace display cable.
7 Replace display.
8 Replace logic board.
(Continued)
logic board connections.
Troubleshooting Symptom Charts/Video
(Continued)
- 10
No display, but
computer appears to
operate correctly
Rainbow colors
visible from extreme
viewing angles
Video
1 Adjust screen contrast.
2 Check display cable, inverter board, interconnect board, and
3 Replace inverter board.
4 Replace interconnect board.
5 Replace power cable.
6 Replace display cable.
7 Replace display.
8 Replace logic board.
Such colors are normal for FSTN screens.
(Continued)
logic board connections.
Troubleshooting Symptom Charts/Video
(Continued)
- 11
Video
Image is not uniform Irregularity in images is normal for FSTN screens. Adjust
contrast and brightness to diminish effect.
Display stopped
working or dimmed
but is fine now
Backlight doesn’t
operate
If temperature is under 5 or over 40 degrees centigrade, this
reaction is normal for FSTN screens.
1 Check cables.
2 Check display cable, inverter board, interconnect board, and
3 Replace inverter board.
4 Replace inverter cable.
5 Replace interconnect board.
6 Replace display.
7 Replace logic board.
(Continued)
logic board connections.
Troubleshooting Symptom Charts/Video
(Continued)
- 12
Video
Screen goes blank 1 Press any key to wake computer from system sleep.
2 Check display cable connection.
Pixel is always white
or always black
Replace display.
(Continued)
Troubleshooting Symptom Charts/Floppy Drive - 13
Floppy Drive
Audio and video
present, but internal
drive does not operate
Disk ejects while
booting; display
shows Mac icon with
blinking X
1 Try known-good floppy disk.
2 Check floppy drive cable connection.
3 Replace floppy drive cable.
4 Replace floppy drive.
5 Replace logic board.
1 Try known-good system disk.
2 Verify that trackball or mouse button is not stuck.
3 Check floppy drive cable connection.
4 Replace floppy drive cable.
5 Replace floppy drive.
6 Replace logic board.
Troubleshooting Symptom Charts/Floppy Drive
(Continued)
- 14
Floppy Drive
Disk does not eject 1 Switch off system and hold mouse button down while you
switch system on.
2 Insert opened paper clip into hole beside drive.
3 Check floppy drive cable connection.
4 Replace floppy drive cable.
5 Replace floppy drive.
6 Replace logic board.
Disk initialization
fails
1 Try known-good floppy disk.
2 Install inverter shield.
3 Check floppy drive cable connection.
4 Replace floppy drive cable.
5 Replace floppy drive.
(Continued)
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