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Apple M8760LL Service Guide - Page 29

behind the ﬁrst slit from the left.

UPC - 718908426234

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11. Important: There is an hidden clip that secures the front of the top case. This clip must be released before the top case can be removed. The clip can be seen behind the optical drive felt, on the left side. Also, there are small slits in the top felt. The clip is behind the ﬁrst slit from the left. Use a black stick along the seam of the top and bottom case to add slight upward pressure so that the top case will pop up when the clip is released. Then insert a dental pick behind the clip and pull out slightly to release the clip and the top case. Top Case PowerBook G4 (15-inch FW800) Take Apart - 27

Section	Page
PowerBook G4 (15-inch FW800)	1
Take Apart	2
General Information	3
Overview	3
New Procedures	4
Important Note	4
Tools	4
Serial Number Location	5
Foot	6
Battery	9
Memory Door and Memory Cards	11
AirPort Extreme Card	18
Top Case	24
Keyboard	37
Backup Battery	46
Optical Drive	50
Hard Drive	55
Modem	59
Bluetooth	63
Left Blower	67
Ambient Light Sensor Boards	70
Logic Board	74
Right Blower	85
Right USB Board	87
Speakers	90
PC Card Cage	93
AirPort Extreme Slot & Flex Cable	96
Display Panel Assembly	100
Heatsink and Blowers Assembly	106
Sound/DC-In Board	109
Bottom Case Assembly	115
Troubleshooting	118
General Information	119
Wire and Flex Cables	119
Hardware Troubleshooting Tools and Tips	121
Apple Hardware Test 2.0.6 (AHT)	121
Apple Service Diagnostic (ASD)	121
Resetting the Power Manager Unit (PMU)	123
Power-on pads on logic board	124
PMU Reset pads on logic board	125
Caps lock LED power check	125
Software Troubleshooting Tips and Tools	126
Mac OS X only	126
Login window and account	126
Customer forgot password	126
Safe Mode	126
Hardware Symptom Charts	128
How to Use the Symptom Charts	128
Power Adapter Note	129
Startup	130
The computer will not power on (no blower movement, hard drive spin up and display is not lit)	130
Memory error message “The built-in memory test has detected an error” appears on the screen	131
Blue screen appears (a spinning disc cursor may also be visible), Prohibitory Sign appears, Resta...	132
Flashing question mark appears on the screen	133
Computer begins to power up, the blowers and hard drive are spinning, pressing caps lock key and ...	133
System shuts down intermittently	134
System shuts down almost immediately after startup	134
Application Quits, Kernel panic or other booting problems	135
Error Beeps	135
Computer beeps once at startup	135
Computer beeps twice at startup	136
Computer beeps three times at startup	136
Computer beeps four times at startup	136
AirPort Extreme Card	137
AirPort Extreme Card not recognized	137
AirPort connection is slow	137
Battery	138
Battery will not eject	138
The battery won't charge	138
Bluetooth	139
Bluetooth system preferences does not show up under Hardware system preferences	139
Bluetooth Card not recognized by other devices	139
Display	140
Display latch not working	140
When displaying a single color over the screen area, the LCD panel shows one or more pixels that ...	140
Hard Drive	141
Internal hard drive will not initialize:	141
Keyboard	142
No response from any key on keyboard	142
No keyboard illumination	142
Half keyboard is illuminated.	143
Microphone	143
The microphone is not working	143
Modem	144
No modem dial tone	144
Modem does not respond (can hear dial tone)	144
Optical Drive	145
The optical drive does not accept CD or DVD disc (mechanical failure)	145
The disc icon does not show up on desktop, or a dialog box appears to initialize disc, when inser...	145
Difficulty writing to optical media	145
PC Card	146
PC Card will not insert into the PC Card slot	146
PC Card does not mount to the desktop	146
Ports	146
A USB port is not recognizing devices	146
A USB device not recognized by computer	147
A FireWire port is not recognizing devices	147
Sound	148
No sound heard and the Speakers section of the Sound system preference pane indicates that an ext...	148
No sound from speaker(s)	148
Distorted sound from speakers	149
Trackpad	150
The cursor does not move when you are using trackpad	150
The cursor intermittently does not move or moves erratically	150
Video	151
No display, or dim display, but computer appears to operate correctly	151
Computer appears to work, but no video on external device connected to the TV out port (S-video o...	151
No video on an external VGA device connected to the external monitor (DVI) port	151
Misc. Symptoms	152
The Date and Time settings reset all the time	152
Feet came off the bottom case	152

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PowerBook G4 (15-inch FW800) Take Apart -

Top Case

11.

Important:

There is an hidden clip that secures the front of the top case. This clip

must be released before the top case can be removed. The clip can be seen behind

the optical drive felt, on the left side. Also, there are small slits in the top felt. The clip is

behind the ﬁrst slit from the left.

Use a black stick along the seam of the top and bottom case to add slight upward

pressure so that the top case will pop up when the clip is released. Then insert a

dental pick behind the clip and pull out slightly to release the clip and the top case.