Symptom Charts

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Startup

RAM failure occurs

1

Remove RAM card (if present) and restart computer. If

(eight-tone error

startup sequence is normal, replace RAM card and retest.

chord sequence

2

Reseat RAM card and check connection.

sounds after startup

3

Replace RAM card.

chord)

4

Replace logic board.

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

Reset PRAM. (See Power Manager and PRAM Reset in Additional Procedures.)

Remove floppy drive from media bay and restart computer. If startup sequence is normal, insert floppy drive and retest. Replace floppy mechanism.

Disconnect hard drive cable from hard drive and restart computer. If startup sequence is normal, reconnect cable and retest.

Replace hard drive. Replace logic board.

Startup failure Upgrade to System Enabler 1.2.1 or later. Refer to Apple Software occurs when using Updates on Service Source Companion CD.

minimum System

Folder and System

Power

Note: You will hear only the click of the power-on button when you attempt to start up a computer that lacks sufficient power to start.

Computer won't 1 If sleep LED is continually on, backup battery power has power up been interrupted. Restart computer by holding down reset actuator 10-20 seconds. If computer doesn't restart, repeat 3-4 times.

2 Try known-good power adapter.

3 Try known-good, charged battery. (See Battery Verification in Additional Procedures.)

4 Connect power adapter and restart computer in 3-4 minutes.

5 Replace logic board.

Screen is blank; computer doesn't respond

1 If sleep LED is continually on, backup battery power has been interrupted. Restart computer by holding down reset actuator 10-20 seconds. If computer doesn't restart, repeat 3-4 times.

2 Restart computer.

3 Disconnect power adapter, remove main battery, and restart computer in 3-4 minutes.

4 Check power adapter cable.

5 Try known-good, charged battery. (See Battery Verification in Additional Procedures.)

6 Try known-good power adapter.

7 Reset power manager. (See Power Manager and PRAM Reset in Additional Procedures.)

8 Check all logic board cables and connections.

9 Replace keyboard.

1 0 Replace logic board.

After you remove battery, some Control Panel settings are different

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

1 Check keyboard and backup battery cables and connections.

2 Replace backup battery.

3 Replace logic board.

1 Reset power manager. (See Power Manager and PRAM Reset in Additional Procedures.)

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

3 Try known-good battery. (See Battery Verification in Additional Procedures.)

4 Try known-good power adapter.

5 Replace logic board.

Power adapter is 1

plugged in, but 2

Control Strip doesn't 3 indicate adapter is connected

Verify that power adapter is connected correctly. Try known-good power adapter. Replace logic board.

When Shutdown is selected with power adapter plugged in, computer shuts down but immediately powers back up

Reset PRAM. (See Power Manager and PRAM Reset in Additional Procedures.)

Disconnect power adapter, remove main battery, disconnect backup battery, and wait 15 minutes before retesting.

Low-power warning appears

1 Attach power adapter and recharge battery.

2 Disconnect peripherals. If warning disappears when peripherals are disconnected, verify that peripherals are low-power.

3 Reduce use of floppy or hard drive, sound, backlight, or other power-consuming devices, or reconnect power adapter.

4 Try known-good, charged battery. (See Battery Verification in Additional Procedures.)

5 Try known-good power adapter.

6 Replace logic board.

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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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