Apple iMac G5 Memory, 17-inch Specifications Page 154
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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iMac G5 (17-inch iSight) Troubleshooting — Symptom Charts 154
Keyboard
Certain keys or none of the keys on the keyboard function.
Unplug all devices from your computer, including your mouse and keyboard as well as
printer, scanner, external hard drives, and hubs. (Warning: Some devices may require you
to perform steps before it is safe to unplug them, e.g, external storage devices.) Be sure to
unplug your hub, if you have one.
Plug your keyboard into the back of your computer rmly and securely. Plug your mouse
into the back of your computer rmly and securely. Take special care to make sure the
connector is completely in the socket. Go on to step 3.
Does your keyboard work now?
Yes: Problem solved.
No: Unplug your keyboard and plug it into another USB slot on the back of your iMac Does
it work now?
Yes: Replace the logic board.
No: Unplug your keyboard and plug your mouse into the port the keyboard just
occupied. Go on to step 4.
Does your mouse work now?
Yes: Replace the keyboard.
No: Replace the logic board.
My keys are sticky or slow to respond.
Try a known good keyboard.
Open System Preferences. Click on the keyboard and mouse icon. Adjust the “key repeat
speed and delay until repeat” rate.
Replace the keyboard.
When I type, strange characters appear on the screen.
Depending on your iMac’s settings, a simple keystroke can change your keyboard from
English to Japanese. This can result in some pretty funny characters showing up when you
type. To switch to the US keyboard,
Open System Preferences.
Click on the International icon.
Click on the Input Menu near the top of the screen.
Scroll down the list and uncheck any non-US keyboard layouts.
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- Service Source 1
- Contents 2
- Take Apart 2
- Screw Chart 160 4
- What’s New? 7
- Orientation 7
- Serial Number Location 7
- Opening the Computer 10
- Access Tool Modication 10
- EMI Shielding 13
- Lower EMI Shield 14
- Access Door and Memory 16
- Front Bezel 19
- Replace the Front Bezel 24
- Camera Board 26
- Replace the Camera Board 27
- Remove the Lower EMI Shield 29
- Replace the Lower EMI Shield 29
- IR Board 30
- Remove the IR Board 31
- Replace the IR Board 31
- Remove the LCD Display 33
- Replace the LCD Display 37
- TMDS Cable 39
- Remove the TMDS Cable 40
- Replace the TMDS Cable 41
- Inverter 42
- Remove the Inverter 43
- Replace the Inverter 45
- Remove the Speakers 47
- Replace the Speakers 48
- Remove the CPU Fan 50
- Replace the CPU Fan 50
- Remove the Optical Drive 52
- Replace the Optical Drive 60
- Remove the Hard Drive 62
- Replace the Hard Drive 66
- DC-DC Board 67
- Remove the DC-DC Board 68
- Replace the DC-DC Board 69
- Power Supply 70
- About the Power Supply 71
- Remove the Power Supply 72
- Replace the Power Supply 73
- Logic Board 74
- Remove the Logic Board 75
- Replace the Logic Board 80
- Optical Drive Fan 82
- Remove the Optical Drive Fan 83
- Replace the Optical Drive Fan 83
- Hard Drive Fan 84
- Remove the Hard Drive Fan 85
- Replace the Hard Drive Fan 85
- AC Power Inlet 86
- Remove the AC Power Inlet 87
- Replace the AC Power Inlet 89
- Ambient Light Sensor Board 90
- Remove the Clutch 96
- Replace the Clutch 98
- Wireless Antenna 99
- Part Location 100
- Remove the Wireless Antenna 100
- Replace the Wireless Antenna 102
- DC Power Cable 103
- Remove the DC Power Cable 104
- Replace the DC Power Cable 105
- Camera Cable 106
- Remove the Camera Cable 107
- Replace the Camera Cable 108
- Preliminary Steps 110
- Remove the Chassis 111
- Replace the Chassis 112
- Rear Housing 114
- Troubleshooting 115
- General Information 116
- Accessing the Diagnostic LEDs 117
- Testing Under Power 123
- SMU (System Management Unit) 125
- DDR Memory 126
- Symptom Charts 127
- Power Issues 128
- Verbose Startup Mode 131
- No Video 132
- LCD Display 135
- Hard Drive 136
- Optical Drive 137
- Discs won’t insert 140
- Fan Sound 142
- AirPort/Bluetooth 145
- IR Remote 147
- IR Sensor/Receiver 148
- Built-in iSight Camera 149
- Audio Quality Poor 150
- Speakers 151
- No: Replace the speakers 152
- My mouse doesn’t work at all 153
- Keyboard 154
- Error Beep(s) 155
- A USB device doesn’t work 156
- Screw Chart 160
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