Apple powerbook 100 Service Manual
K
Service Source
PowerBook 100
K
Service Source
Specifications
PowerBook 100
Specifications Processor - 1
Processor
CPU
Addressing
Motorola 68HC000, 16-bit CMOS microprocessor
15.6672 MHz
32-bit internal registers
24-bit address bus
16-bit data bus
Specifications Memory - 2
Memory
RAM
ROM
PRAM
VRAM
Clock/Calendar
2 MB of 100 ns pseudostatic RAM (PSRAM) standard, expandable
to 8 MB
256K (two 128K by 8-bit devices); 150 ns access time;
addressing supports up to 4 MB
128 bytes of parameter memory
32K of pseudostatic video display memory
CMOS custom chip with long-life lithium battery
Specifications Disk Storage - 3
Disk Storage
Floppy Drive (Optional)
20 MB Hard Drive
40 MB Hard Drive
External Macintosh HDI-20 1.4 MB drive
4.5 W startup power; 1.25 W random operation; 50 mW idle
20 MB formatted capacity
Apple SCSI interface; 2.5 in. mechanism
23 msec average access time (maximum)
5.0 W startup power; 2.7 W random operation
40 MB formatted capacity
Apple SCSI interface; 2.5 in. mechanism
<19 msec average access time (maximum)
5.0 W startup power; 2.25–2.5 W random operation; 1.3–1.5 W
idle
Specifications I/O Interfaces - 4
I/O Interfaces
Floppy Drive
SCSI
Apple Desktop Bus
Serial
One HDI-20 floppy drive port for external 1.4 MB drive
One HDI-30 SCSI port; 1.5 MB/sec. transfer rate
Supports five devices maximum
One Apple Desktop Bus (ADB) port; low-speed serial interface
Two RS-422 ports, one external and one internal 230.4 Kbaud
minimum
Asynchronous, synchronous, and AppleTalk protocols supported
Internal connector supports Macintosh PowerBook Fax/Data
modem
Specifications I/O Interfaces - 5
Sound
One sound output port for external audio amplifier
Specifications I/O Devices - 6
I/O Devices
Keyboard
Trackball
Mouse (Optional)
Floppy Drive (Optional)
Built-in keyboard; ADB interface
Dimensions: 10.6 in. length, 3.5 in. width, .5 in. depth
Pitch: .73 in. horizontal; .71 in. vertical
Dual-button trackball; 25 mm diameter; ADB interface
Low-power mouse; ADB interface
External Macintosh HDI-20 1.4 MB floppy drive
Specifications Sound and Video - 7
Sound and Video
Sound
Video Display
Apple Sound Chip; one- or four-voice mono (one or two voices in
stereo) with 4-bit digital-to-analog conversion using 22-kHz
sampling rate
9 in. (229 mm) diagonal screen
Film-compensated Super Twist Nematic (FSTN), backlit flat-
panel display
640 by 400 pixels; 75 dpi
Specifications Electrical - 8
Electrical
Main Battery
Backup Batteries
Frequency
ADB Power Requirements
Sealed lead-acid battery (7 V)
2.5 hrs. maximum capacity
Three 3.5 V lithium cells
Industry-standard CR-2430 batteries
110–220 V
50–60 Hz
Maximum current draw for all ADB devices is 50 mA (maximum
of three ADB devices recommended)
Specifications Electrical - 9
Power Adapter
Sound
Input voltage: 85–270 VAC (100/240 nominal); 48–62 Hz (50/
60 nominal)
Output voltage: 7.0–7.6 V (7.5 nominal); 5 mA–2 A (1.5
nominal)
One sound output port for external audio amplifier
K
Service Source
Troubleshooting
PowerBook 100
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 the PowerBook 100,
• Remove the AC adapter and the battery.
• Let the unit sit without power hooked up for 3-5 minutes.
• Simultaneously hold down the Control, Command, Option, and
Power On keys 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
Error chord sounds
during startup
sequence
Screen displays
checkerboard pattern;
no startup chime
1 Connect AC adapter and restart computer in three or four
minutes.
2 Replace memory expansion board (if installed). Refer to
“Memory Expansion Card” in Upgrades.
3 Replace motherboard.
4 Replace daughterboard.
1 Reseat RAM expansion card.
2 Replace RAM expansion card.
3 Replace daughterboard.
4 Reseat display cable.
Troubleshooting Symptom Charts/Power - 4
Power
Screen is blank;
computer does not
respond
1 Verify storage switch is in “on” position.
2 Reset computer.
3 Connect AC adapter and restart computer in three or four
minutes.
4 Install known–good, charged main battery. If computer
works, replace main battery.
5 Verify that keyboard cable is securely connected.
6 Reset the power manager.
7 Replace keyboard.
8 Replace daughterboard.
9 Replace motherboard.
Troubleshooting Symptom Charts/Power
(Continued)
- 5
After main battery is
changed, some Control
Panel settings are
different
After all power
sources are removed,
some Control Panel
settings are different
Power
Replace backup batteries.
Condition is normal. Removing all power affects some Control
Panel settings (such as time) that are stored in parameter RAM.
(Continued)
Troubleshooting Symptom Charts/Power
(Continued)
- 6
AC adapter is plugged
in and connected, but
battery DA does not
indicate charger is
connected
Low-power warning
appears soon after
computer starts
Power
1 Verify that AC adapter is connected properly.
2 Try different main battery. If battery charges, replace main
3 Verify that adapter is good.
4 Replace AC adapter.
5 Replace motherboard.
1 Attach AC adapter. Battery needs recharging.
2 Verify that peripherals display low-power icon.
3 Reduce use of floppy or hard drives, modem, sound,
(Continued)
battery.
backlight, or other power-consuming devices or connect AC
adapter.
Troubleshooting Symptom Charts/Video - 7
Video
Screen suddenly goes
blank
Screen goes blank and
computer shuts down
every few minutes
Pixel never comes on Replace display.
Row of pixels never
comes on
Condition is normal; computer has gone into sleep to conserve
battery power.
Adjust sleep delays in Control Panel or connect AC adapter.
1 Replace interconnect cable.
2 Replace display.
3 Replace interconnect board.
4 Replace daughterboard.
5 Replace motherboard.
6 Return computer to Apple.
Troubleshooting Symptom Charts/Video
(Continued)
- 8
Video
Pixel is always on Replace display.
Partial or complete
row of pixels is
always on
1 Replace interconnect cable.
2 Replace display.
3 Replace interconnect board.
4 Replace daughterboard.
5 Replace motherboard.
6 Return computer to Apple.
(Continued)
Troubleshooting Symptom Charts/Video
(Continued)
- 9
Display is very light
or totally white
Video
1 Adjust screen contrast and brightness settings.
2 Verify interconnect-cable-to-motherboard connection.
3 Replace inverter board.
4 Replace interconnect cable.
5 Replace interconnect board.
6 Replace display.
7 Replace daughterboard.
8 Replace motherboard.
9 Return computer to Apple.
(Continued)
Troubleshooting Symptom Charts/Video
(Continued)
- 10
No display but
computer appears to
operate correctly
Display shows
rainbow colors when
viewed from extreme
side angles
Video
1 Adjust screen contrast and brightness settings.
2 Verify interconnect-cable-to-motherboard connection.
3 Replace inverter board.
4 Replace interconnect cable.
5 Replace interconnect board.
6 Replace display.
7 Replace daughterboard.
8 Replace motherboard.
9 Return computer to Apple.
Condition is normal for PowerBook 100 screen.
(Continued)
Troubleshooting Symptom Charts/Video
(Continued)
- 11
Image on display is
not uniform
Display stopped
working (or dimmed)
but shows no
problems now
Video
Condition is normal for PowerBook 100 screen.
If temperature (under 5° C or over 45° C) or light was extreme
when problem occurred, condition is normal for PowerBook 100
screen.
(Continued)
Troubleshooting Symptom Charts/Video
(Continued)
- 12
Backlight doesn’t
operate
Slight white line is
always in middle of
screen.
Video
1 Adjust screen brightness setting.
2 Verify interconnect-cable-to-motherboard connection.
3 Replace inverter board.
4 Replace interconnect cable.
5 Replace interconnect board.
6 Replace display.
7 Replace daughterboard.
8 Replace motherboard.
Condition is normal for PowerBook 100 screen.
(Continued)
Troubleshooting Symptom Charts/Hard Drive - 13
Hard Drive
Internal hard drive
does not operate
1 Verify that all external SCSI devices connected to computer
are switched on.
2 Verify that hard drive flex cable is securely connected at both
ends.
3 Use “HD SC Setup” to see if drive is visible to program. If it
is visible, update SCSI driver.
4 Reinstall system software.
5 Replace hard drive flex cable.
6 Replace hard drive.
7 Replace motherboard.
8 Replace daughterboard.
Troubleshooting Symptom Charts/Hard Drive
(Continued)
- 14
Hard drive is slow to
respond or screen
goes blank too often
Hard Drive
Adjust sleep delays in Control Panel or connect AC adapter.
(Continued)
Troubleshooting Symptom Charts/Peripheral - 15
Peripheral
After you connect
external SCSI device,
computer no longer
boots
Cursor does not move
when you move
trackball
1 Switch on external SCSI device before starting up computer.
2 Verify that Apple HDI-30 SCSI system cable is connected to
computer and external SCSI device(s).
3 Verify that cable termination is correct.
4 Verify that no SCSI devices have same device address.
5 Replace motherboard.
6 Replace daughterboard.
1 Reset computer.
2 Verify trackball-assembly-to-motherboard connection.
3 Replace trackball assembly.
4 Replace daughterboard.
5 Replace motherboard.
Troubleshooting Symptom Charts/Peripheral
(Continued)
- 16
Cursor intermittently
does not move or
moves erratically
Cursor does not move
when you move mouse
Peripheral
1 Clean trackball ball and internal rollers.
2 Replace trackball assembly.
1 Verify that mouse is connected to ADB port.
2 Reset computer.
3 Clean mouse ball and inside of mouse.
4 Replace mouse.
5 Replace motherboard.
6 Replace daughterboard.
(Continued)
Troubleshooting Symptom Charts/Peripheral
(Continued)
- 17
Cursor moves, but
clicking button has no
effect
No response to any
key on keyboard
Peripheral
1 Verify trackball-assembly-to-motherboard connection.
2 Replace trackball assembly.
3 Replace daughterboard.
4 Replace motherboard.
1 Reset computer.
2 Connect AC adapter and restart computer in three or four
minutes.
3 Install known-good, charged main battery. If computer
works, replace main battery.
4 Verify that keyboard cable is securely connected to
motherboard.
5 Replace keyboard.
6 Replace daughterboard.
7 Replace motherboard.
(Continued)
Troubleshooting Symptom Charts/Peripheral
(Continued)
- 18
Known-good
ImageWriter,
ImageWriter II, or LQ
does not print
Known-good
LaserWriter does not
print
Peripheral
1 Verify that system software is 7.0.1 or later.
2 Verify that Chooser setting is correct.
3 Verify that printer cable is securely attached.
4 Replace printer cable.
5 Replace motherboard.
6 Replace daughterboard.
1 Verify that system software is 7.0.1 or later.
2 Verify that Chooser setting is correct.
3 Verify that all printer cables are securely attached.
4 Connect computer to another printer. If printer works, refer
to Networks and Communications manual.
5 Replace motherboard.
6 Replace daughterboard.
(Continued)
Loading...