Apple powerbook 150 Service Manual

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PowerBook 150

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Basics

PowerBook 150

Basics	General Information - 1

General Information

Figure: PowerBook 150

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 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	Modem	SCSI	Printer/Modem Reset	Power
Adapter		(HDI-30)	Button	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:

—Launch it directly by double-clicking the Apple Spec Database runtime alias at the top level of the Main Service Source CD.

—Select "Apple Spec Database" from the Service Source dropdown main menu.

—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		Motorola 68030 microprocessor
		33 MHz
Addressing		32-bit internal registers
		32-bit address bus
		32-bit data bus

	Specifications	Memory - 3
		Memory
RAM		4 MB, expandable to 40 MB
ROM		1 MB
PRAM		256 bytes of parameter memory
VRAM		256K of static video display memory
Clock/Calendar		CMOS custom chip

	Specifications	Disk Storage - 4
		Disk Storage
Floppy Drive		19 mm high, 1.4 MB Apple SuperDrive
Hard Drive		2.5 in., 120 MB IDE hard drive

	Specifications	I/O Interfaces - 5
		I/O Interfaces
SCSI		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
Serial		One RS-422 serial port; mini DIN-8 connector

	Specifications	I/O Devices - 6
		I/O Devices
Keyboard		Built-in standard Apple keyboard
		63 keys domestic; 64 keys ISO
		18 mm vertical pitch; 18.63 mm horizontal pitch
		Two-level tilt adjustment
Trackball		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 2–4 hours of usage before recharging

110–240 VAC line voltage 50–60 Hz

US, Japanese, United Kingdom, Australian, and European versions

	Specifications	Physical - 9
		Physical
Dimensions		Height: 2.3 in. (5.8 cm)
		Width: 11.3 in. (28.7 cm)
		Depth: 9.3 in. (23.6 cm)
Weight		5.5 lb. (2.5 kg) with battery

	Specifications	Environmental - 10
		Environmental
Operating		50–95° F (10–35° C)
Temperature
Storage		14–140° F (-10 to 60° C)
Temperature
Relative Humidity		20–80% noncondensing
Operating Altitude		0–10,000 ft. (0–3048 m)

Shipping Altitude 0–15,000 ft. (0–4722 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			1	Replace RAM expansion card.
(eight-tone error			2	Replace logic board.
chord sequence
sounds after startup
chord)
Hardware failure			1	Disconnect hard drive data cable and reboot system. If
occurs (four-tone				startup sequence is normal, replace hard drive.
error chord sequence			2	Disconnect floppy drive cable and reboot system. If startup
sounds after startup				sequence is normal, replace floppy drive.
chord)			3	Replace logic board.

	Troubleshooting		Symptom Charts/Startup (Continued) - 4
		Startup (Continued)
Screen displays		1	Reseat RAM expansion card.
checkerboard pattern;		2	Replace RAM expansion card.
no startup chime		3	Reseat display cable.

Troubleshooting Symptom Charts/Power - 5

Power

Screen is blank;	1	Press reset switch.
computer doesn’t	2	Connect power adapter and reboot computer in 3–4 minutes.
respond	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.
After removing main	1	Replace interconnect board.
battery, some	2	Replace logic board.
Control Panel
settings are different

		Troubleshooting		Symptom Charts/Power (Continued) - 6
			Power (Continued)
Power adapter is			1	Check battery charger connection.
plugged in, but			2	Try known-good, charged main battery.
battery DA does not			3	Try known-good power adapter.
indicate charger is			4	Replace logic board.
connected
Low-power warning			1	Recharge battery or attach power adapter.
appears			2	Verify that peripherals are low-power.
			3	Reduce use of power-consuming devices or connect power
				adapter.
			4	Try known-good, charged main battery.
			5	Try known-good power adapter.
			6	Replace logic board.

	Troubleshooting		Symptom Charts/Power (Continued) - 7
		Power (Continued)
Computer runs when		1	Reseat battery to make sure battery is mating with contacts
plugged in to wall			on logic board.
outlet but not on		2	Replace fuse on logic board.
battery power;		3	Replace logic board.
battery voltage is		4	Return computer to Apple.
within tolerance

Troubleshooting Symptom Charts/Video - 8

Video

Row or partial row of	1	Replace display cable.
pixels never comes	2	Replace display.
on or is always on	3	Replace interconnect board.
Thin white line is	Thin white line is normal for FSTN screens.
always on at middle of
screen

		Troubleshooting		Symptom Charts/Video (Continued) - 9
			Video (Continued)
Display is very light			1	Adjust screen contrast.
or totally white			2	Adjust screen brightness.
			3	Check display cable, inverter board, interconnect board, and
				logic board connections.
			4	Replace inverter board.
			5	Replace interconnect board.
			6	Replace display cable.
			7	Replace display.
			8	Replace logic board.

		Troubleshooting		Symptom Charts/Video (Continued) - 10
			Video (Continued)
No display, but			1	Adjust screen contrast.
computer appears to			2	Check display cable, inverter board, interconnect board, and
operate correctly				logic board connections.
			3	Replace inverter board.
			4	Replace interconnect board.
			5	Replace power cable.
			6	Replace display cable.
			7	Replace display.
			8	Replace logic board.
Rainbow colors			Such colors are normal for FSTN screens.
visible from extreme
viewing angles

	Troubleshooting	Symptom Charts/Video (Continued) - 11
		Video (Continued)

Image is not uniform

Display stopped working or dimmed but is fine now

Backlight doesn’t operate

Irregularity in images is normal for FSTN screens. Adjust contrast and brightness to diminish effect.

If temperature is under 5 or over 40 degrees centigrade, this reaction is normal for FSTN screens.

1Check cables.

2Check display cable, inverter board, interconnect board, and logic board connections.

3Replace inverter board.

4Replace inverter cable.

5Replace interconnect board.

6Replace display.

7Replace logic board.

	Troubleshooting	Symptom Charts/Video (Continued) - 12
		Video (Continued)
Screen goes blank		1 Press any key to wake computer from system sleep.
		2 Check display cable connection.
Pixel is always white		Replace display.
or always black

Troubleshooting Symptom Charts/Floppy Drive - 13

Floppy Drive

Audio and video	1	Try known-good floppy disk.
present, but internal	2	Check floppy drive cable connection.
drive does not operate	3	Replace floppy drive cable.
	4	Replace floppy drive.
	5	Replace logic board.
Disk ejects while	1	Try known-good system disk.
booting; display	2	Verify that trackball or mouse button is not stuck.
shows Mac icon with	3	Check floppy drive cable connection.
blinking X	4	Replace floppy drive cable.
	5	Replace floppy drive.
	6	Replace logic board.

Troubleshooting Symptom Charts/Floppy Drive (Continued) - 14

Floppy Drive (Continued)

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	1	Try known-good floppy disk.
fails	2	Install inverter shield.
	3	Check floppy drive cable connection.
	4	Replace floppy drive cable.
	5	Replace floppy drive.