Apple iMac (Summer 2000) Repair Manual Page 135
- Page / 263
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Troubleshooting Block Diagram/ Searching the Knowledge Base - 4
Block Diagram
The following illustration pro-
vides an overview of the iMac
internal components and shows
how they are connected.
Hard
Drive
CD-ROM
Drive
Modem
AirPort/
Adapter
Card
Main
Logic
Board
Video
Neck
Board
Yo k e
CRT
Power Supply and
Video Deflection Board
Speakers,
Headphone Jacks,
Microphone,
Power/Led Board
Digital Electronics
Power Supply
Down Converter
EMI Cover
Analog Electronics
System Block Diagram
- iMac (Summer 2001) 1
- Take Apart 2
- What’s New 3
- Procedures 7
- Replacement Note: 10
- 5. Pull the bottom housing 11
- Bottom Housing 12
- Replacement Note 12
- EMI Cover 13
- Take Apart EMI Cover - 13 14
- 1. Remove the six screws 14
- SDRAM DIMM 17
- CD/HD Carrier 25
- CD-ROM / DVD 29
- ROM/CD-RW 29
- CD-ROM, DVD-ROM,CD 34
- RW Module Replacement 34
- CD/DVD/CD-RW 37
- Adapter Board 37
- Hard Drive 39
- Hard Drive Replacement 43
- Logic Board 44
- Thermal Pad Information 50
- Thermal Pad Installation 51
- Down Converter Board 53
- Replacement Note: When 58
- Note: The modem is located 59
- Take Apart Modem - 6 0 61
- 3. Turn the logic board to 61
- Note: As you slide the 62
- Modem Replacement 63
- I/O Panel 64
- Take Apart I/O Panel - 65 66
- 3. Turn the logic board 66
- Front Outer Bezel 68
- 2. After removing the tabs 70
- Note: The bezel tabs fit 71
- 2. Pry the tabs off, and 75
- 6. Lift the top rear housing 78
- Divider Panel 79
- Power/Analog/Video 81
- 6. Open the CRT cable 84
- Important: Be careful when 89
- 12. Loosen the CRT neck 90
- 13. Carefully pull the video 91
- Replacement Note: If you’re 94
- Identifying Power/Analog/ 95
- Video Boards 95
- Switch Instructions 96
- Note: To separate the left 102
- ±Warning: This product 105
- Take Apart Antenna - 10 5 106
- • front outer bezel 106
- • top rear housing 106
- • divider panel assembly 106
- 1. Remove the three screws 107
- Take Apart Antenna - 10 6 107
- Important: Note how the 108
- Take Apart Antenna - 10 9 110
- 4. This shows a close up 110
- Take Apart Antenna - 11 1 112
- 6. Remove the antenna 112
- Speakers 113
- Note: If you are certain 114
- Caution: Be careful when 120
- Replacing the CRT 121
- Switch Settings for the LG 124
- Identifying the LG CRT 125
- Identifying the CPT CRT 126
- Take Apart Microphone - 127 128
- 1. Unwrap the bendable 128
- 2. Disconnect the 128
- Take Apart Microphone - 128 129
- 3. Pull the microphone 129
- Replacing the Microphone 130
- Take Apart Microphone - 130 131
- 3. Check that the 131
- Introduction 132
- Searching the Knowledge Base 133
- Troubleshooting Procedures 134
- Block Diagram 135
- Power Flow 136
- Testing for Power 137
- At the Logic Board 138
- Note: To take 141
- The PMU Chip 142
- Power-On Self Test 144
- Logic Board Battery 145
- HFS Plus Formatted Drives 148
- Testing the Modem 149
- Before the Finder Appears 151
- No Power 152
- Possible Cause Possible Fix 153
- No Video or Unstable Raster 154
- Gray Screen 156
- Error Beep(s) 157
- Flashing Question Mark 158
- System Hangs During Boot 159
- After Startup 161
- System Hangs 162
- Distorted Video 163
- Thin White Line 164
- Tinting Video 165
- Garbage Video 166
- Memory Error Dialog 168
- Can’t Wake From Sleep 169
- Network Problems 170
- CD_ROM or DVD-ROM Vibration 171
- CD-ROM or DVD-ROM Won’t Eject 172
- Hard Drive Problems 175
- Sound Out Problems 176
- Sound In Problems 177
- USB Problems 179
- Cursor Problems 181
- USB Printer Problems 182
- Networked Printer Problems 183
- Modem Not Recognized 184
- Modem Dialing Problems 185
- Modem Not Connecting 187
- Modem Dropping Connection 189
- Modem Performance Issues 190
- Upgrades 191
- Note: Place a soft towel or 193
- Important: If necessary 194
- Upgrades - 5 195
- 4. Push the ejector tabs on 195
- AirPort Card 197
- Protective 199
- Guide Rails 199
- Note: It is probably 200
- Connect an 203
- External Monitor 203
- Upgrades - 14 204
- 10. Place the computer face 204
- Upgrades - 16 206
- Adjustments 207
- Information 208
- Important: 208
- Adjustment 208
- Adjustment Tools 209
- Light Meter Setup 210
- Model R77 211
- Note: When the light meter 212
- Caution: Dropping the 213
- Jumper Adjustment 214
- 2. With the power off 216
- Note: The video board 217
- Focus Adjustment 218
- Note: Make sure the 219
- Screen Voltage 221
- Note: Without the 224
- 8. Select the Gray Bars test 226
- Note: The surrounding 227
- Cutoff Adjustment 228
- • prior to the white balance 229
- • in a dimly lit room 229
- Note: The Revert and 232
- Note: Depending on the 236
- 12. Click the Save button to 237
- 13. Proceed to the white 237
- White Balance 238
- 1. Open the Display Service 239
- Utility and select the 239
- Gray Bars test pattern 239
- 2. Adjust the red, green 240
- Note: If you don’t 243
- 9. Click the Factory 244
- Settings button 244
- Geometry 245
- 1. Open the Display 246
- Adjustment Utility 246
- 2. Select the Geometry tab 246
- Note: Don’t use the 247
- Note: Repeat steps 2-4 248
- Note: Rotation 250
- S Correction 251
- Note: Before returning 255
- Exploded View 257
- Exploded View 2 258
- Exploded View 3 259
- Exploded View 4 260
- Exploded View 5 261
- Power/Analog/Video Boards 262
- Exploded View 7 263
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