Apple M9628LL Service Guide - Page 148

Error Beeps, Computer beeps once at startup

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5. Reset the power manager by pressing the key combination Control-Option-Shiftpower. Warning: Make sure you do not hold down the "fn" key when resetting the power manager. Warning: Resetting the power manager will permanently remove a RAM disk, if present, and all of its contents. You will also need to reset the date and time (using the Date & Time control panel). 6. Replace battery transfer board. 7. Replace logic board. Error Beeps The computer automatically performs a power-on self test when it is turned on after being fully shut down (not a restart). This section describes what to do if beeps are heard during the startup. Note: The computer has a memory expansion slot that accepts a 1.25-inch (or shorter) PC-100 compliant, SO-DIMM memory card. Refer to the Memory Replacement instructions for removal and installation. Computer beeps once at startup 1. One beep means that no RAM is detected. 2. If a RAM card is installed in the expansion slot, remove it and put in known-good and compatible RAM and restart. • If symptom does NOT repeat, replace RAM card. • If symptom repeats, replace logic board. 3. If no RAM card is installed, replace logic board. Computer beeps twice at startup 1. Two beeps means that EDO memory is installed in the expansion slot. The iBook does not accept EDO memory. 2. Replace RAM card with known-good and compatible RAM and restart. • If symptom repeats, replace logic board. 2 - iBook G4 (14.1 LCD) Troubleshooting Symptom Charts

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2 -
iBook G4 (14.1 LCD) Troubleshooting
Symptom Charts
5.
Reset the power manager by pressing the key combination Control-Option-Shift-
power.
Warning: Make sure you do not hold down the "fn" key when resetting the
power manager.
Warning: Resetting the power manager will permanently remove a RAM disk, if
present, and all of its contents. You will also need to reset the date and time
(using the Date & Time control panel).
6.
Replace battery transfer board.
7.
Replace logic board.
Error Beeps
The computer automatically performs a power-on self test when it is turned on after being
fully shut down (not a restart). This section describes what to do if beeps are heard during
the startup.
Note:
The computer has a memory expansion slot that accepts a 1.25-inch (or shorter)
PC-100 compliant, SO-DIMM memory card. Refer to the Memory Replacement
instructions for removal and installation.
Computer beeps once at startup
1.
One beep means that no RAM is detected.
2.
If a RAM card is installed in the expansion slot, remove it and put in known-good and
compatible RAM and restart.
•
If symptom does NOT repeat, replace RAM card.
•
If symptom repeats, replace logic board.
3.
If no RAM card is installed, replace logic board.
Computer beeps twice at startup
1.
Two beeps means that EDO memory is installed in the expansion slot. The iBook does
not accept EDO memory.
2.
Replace RAM card with known-good and compatible RAM and restart.
•
If symptom repeats, replace logic board.