Apple_Laptop

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.

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 drop- down main menu.

???Click the Acrobat toolbar icon for the database, which is near the right end of the toolbar with the letters "SP."

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

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

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.

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.

Computer runs when plugged in to wall outlet but not on battery power; battery voltage is within tolerance

1Reseat battery to make sure battery is mating with contacts on logic board.

2Replace fuse on logic board.

3Replace logic board.

4Return computer to Apple.

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.

Top Case

Before you begin, remove the main battery.

Caution: The PowerBook 150 contains CMOS devices

Top Casethat are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Interconnect

Cable

2Lift up the top case and disconnect the interconnect cable.

3Lift off the top case and unhook the two tab fasteners from the front of the bottom case.

Replacement Caution: When connecting the interconnect cable, fold the cable as shown. If it is not folded correctly, the cable could short.

Tab Fastener

Hard Drive

Before you begin, remove the following:

??? Main battery

??? Top case

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Hard Drive

Take ApartHard Drive - 8

Caution: The hard drive cable is fragile. Handle it with care.

1 Disconnect the hard drive cable from the logic board.

Floppy Drive

Hard Drive

Cable

Caution: The hard drive cable is fragile and should be handled with care.

1Disconnect the hard drive cable from the logic board.

2Carefully fold back the cable from the floppy drive.

Locking

Tab

Caution: The floppy drive cable is fragile and should be handled with care.

3Lift the locking tab on the floppy drive connector and disconnect the floppy drive cable from the logic board.

Trackball

Assembly

Trackball

Assembly

Before you begin, remove the following:

??? Main battery

??? Top case

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Trackball Locking

Cable Tab

Caution: The trackball cable is fragile and should be handled with care.

1Pull out the locking tab on the trackball connector and disconnect the trackball cable.

Keyboard

Cables

Caution: The keyboard ribbon cables are fragile and should be handled with care.

1Lift up the locking tabs on the two keyboard connectors and disconnect the keyboard cables.

Inverter

Shield

Inverter

Board

Inverter

Cable

1Remove the two mounting screws that secure the inverter board to the bottom case.

2Note: Do not remove the inverter shield from the inverter board.

Pull the inverter board and attached shield straight up and off the connector on the interconnect board.

3Disconnect the inverter cable.

Replacement Note: Inverter

shields are available from

Take ApartInterconnect Board - 27

Interconnect Board

Before you begin, remove the following:

??? Main battery

??? Top case

??? Inverter board

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Interconnect Board

Take ApartInterconnect Board - 28

??Warning: The interconnect board contains hazardous materials. Return bad interconnect boards to Apple for proper disposal.

1 Caution: The keyboard and display ribbon cables are fragile. Handle these cables with care.

Lift up the locking tabs on the two keyboard connectors and disconnect the keyboard cables.

Elevation Feet

Before you begin, remove the following:

??? Main battery

??? Top case

Caution: The PowerBook Elevation Foot 150 contains CMOS devices

that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Elevation Foot

Spring

Clip

Elevation

Foot

1Using a T-8 torx driver, remove the torx screw and washer and the spring clip from the inside of the elevation foot.

2Pull off the elevation foot.

Fuse

Before you begin, remove the following:

??? Main battery

??? Top case

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Fuse

Take ApartLogic Board - 37

Logic Board

Before you begin, remove the following:

??? Main battery

??? Top case

??? RAM expansion card (if present)

??? Modem board (if present)

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Logic Board

Screw

Plastic Plugs

Plastic

Plug

1Remove the two plastic plugs.

2Using a T-8 torx driver, remove the two bezel mounting screws from the display.

Inverter

Cable

Clutch Covers

Right

Clutch

5Pull off the three clutch covers.

6Using a T-8 torx driver, remove the three mounting screws from the left and right clutches.

7Remove the left and right clutches from the display housing.

Replacement Note: Replace the short mounting screws in the top-inside clutch threadings. The top-outside threadings are used to mount the bezel.

Take Apart

Display Cable

Display Cable - 51

Display Cable

Before you begin, remove the following:

??? Main battery

??? Top case

??? Inverter board

??? Interconnect board

??? Display bezel

??? Display

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

Center

Left Clutch

Clutch Cover

Cover

Display

Cable

Replacement Note: Replace the short mounting screw in the top-inside clutch threading. The top-outside threading is used to mount the bezel.

5Remove the display cable from the case.

Right

Clutch

Center Cover

Clutch

Cover

Inverter

Cable

Right

Clutch

1Pull off the center and right clutch covers.

2Using a T-8 torx driver, remove the three mounting screws from the right clutch.

3Remove the clutch from the display housing.

Replacement Note: Replace the short mounting screw in the top-inside clutch threading. The top-outside threading is used to mount the bezel.

Modem Port Cover

Release

Tabs

Note: The modem card is an option for the PowerBook 150.

1Pinch the release tabs and push out the modem port cover.

Modem

Modem Card Connector

J4 Connector

2Connect the modem card connector to connector J4 on the logic board.

3Install the two mounting screws.

RAM Expansion

Card

Before you begin, remove the following:

??? Main battery

??? Top case

Caution: The PowerBook 150 contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins/ Safety.

RAM Expansion Card

Upgrades

J7 Connector

Brace Slot

RAM Expansion Card - 7

3Insert the two legs of the expansion card brace into the two brace slots in the logic board.

4Caution: Be careful not to flex the RAM card or adapter when connecting the adapter to the logic board.

Connect the adapter (with RAM card and brace attached) to connector J7 on the logic board.

5Install the mounting screw.

Upgrades

Adapter

Logic Board

Take-Apart

Tool

RAM Expansion Card - 8

Note: To disconnect the adapter from the logic board, be sure to use the Apple logic board take-apart tool.

Note: To verify that the upgrade is successful, check the Total Memory message (for systems with virtual memory switched off) or the Built-in Memory message (for systems with virtual memory switched on). The memory size should be 4 MB of soldered RAM plus the RAM on the expansion board. If the memory size is