Apple Power Macintosh G3 Specifications Page 237
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Troubleshooting Symptom Charts/Video and Sound - 42
Video and Sound
Screen is black, but
boot tone is present,
drive operates, fan is
running, and LED is
lit
1 Check video cable/card connections. If using a VGA to
Macintosh adapter refer to “VGA-to-Macintosh Adapter”
earlier in this chapter.
2 Reseat SDRAM DIMMS. Make sure DIMMS are PC-100
DIMMS. Refer to “SDRAM DIMMS Do’s and Don’ts” in this
chapter.
3 Remove all SDRAM DIMMs and try replacing them one at a
time to test. Replace any bad DIMMs.
4 Check jumper block configuration at J25. Make sure jumper
block is correct color for processor type installed (see
“Jumper Location J25” earlier in this chapter for more
information). Also make sure the metal jumper pins are in
the correct position in the block and the block is installed in
the correct direction.
5 Clear parameter RAM. Hold down Command-Option-P-R
during startup but before “Welcome to Macintosh” appears.
- Hot Issues 2
- Introduction 3
- Processor Module vs. Card 4
- Processor Module Jumper 4
- Warranty Sticker 5
- Power Supply Voltage Setting 5
- I/O Card 6
- SDRAM DIMMS 6
- SGRAM Video Memory 11
- Overview 13
- Features 14
- Configure-to-Order 20
- Basics Right Side View - 10 22
- Basics Left Side View - 11 23
- Basics Internal Locator - 12 24
- VOID Warrenty 26
- Seal if Broken 26
- RAM Expansion 27
- No Video RAM Expansion 28
- No L2 Cache Expansion 29
- DVD-ROM and DVD MPEG2 Decode 30
- Card Module 30
- Drives Installed 33
- Ultra ATA Drives 35
- Ultra2 LVD SCSI Drives 35
- Other Types of SCSI Drives 37
- ATAPI CD-ROM Drive 38
- Optional ATAPI Zip Drive 39
- Optional DVD-ROM Drive 39
- I/O Ports 40
- Keyboard 41
- FireWire Ports 42
- No SCSI Ports 42
- Ethernet Port 43
- Internal Modem 44
- Sound System 45
- Sound Output 46
- Sound Input 47
- Digitizing Sound 49
- Basics - 38 50
- The Cuda Chip 51
- Voltage Switch 54
- Repair Strategy 55
- USA Ordering 56
- Canadian Ordering 57
- Warranty/AppleCare/ARIS 58
- Specifications 59
- Hard Drive Specifications 61
- 12G - 5400 rpm drive 62
- 9 GB SCSI Drives 63
- Notes 68
- Take Apart 69
- Opening the 71
- Computer 71
- Logic Board 73
- Hard Drive, IDE / 77
- (Flat and U-shaped) 78
- Version 1 79
- Version 2 82
- 2 Remove the hard drive 83
- Hard Drive, Ultra2 88
- LVD SCSI 88
- Version 1 Carrier 97
- Replacement 97
- 4 Remove the hard drive 101
- Carrier Support 107
- Video Card and 110
- DVD Decoder 110
- Ultra2 LVD SCSI 113
- FireWire Board 115
- Processor Module 124
- 5 Lift the lever to release 128
- Processor 132
- SDRAM DIMM 134
- CD-ROM/DVD 136
- ROM/DVD-RAM/ 136
- Zip Drive Bezel 136
- CD-ROM, DVD 138
- ROM, or DVD 138
- RAM Drive 138
- Zip Drive 144
- Take Apart Fan - 76 145
- Before you begin, open the 145
- Power Supply 149
- Take Apart Power Supply - 82 151
- 2 Using a 2.5 mm allen 151
- Handle, Top Front 154
- Handle, Top Rear 157
- Panel, Top 159
- Panel, Front 161
- ±Warning: When the 161
- Take Apart Panel, Front - 93 162
- 1 Open the side access 162
- Panel, Rear 164
- 4 Once the tabs are 166
- Panel, Side, Right 167
- 1 Remove the four 2.5 mm 168
- Panel, Side, Left 171
- Panel, Latch 175
- Panels, Lower 177
- Front and Lower 177
- Supports, Front 179
- 1 Using a 2.5 mm allen 180
- 2 Lift the support off the 181
- Panel, I/O Cover 182
- Front Panel Board 188
- 1 Disconnect the front 189
- (FireWire), and open 189
- I/O Panel 192
- Take Apart I/O Panel - 124 193
- 1 Remove the two screws 193
- Take Apart I/O Panel - 125 194
- 2 Tilt the I/O panel 194
- Troubleshooting 195
- Block Diagram 196
- Logic Board Diagram 198
- Logic Board Troubleshooting 199
- Resetting the Cuda Chip 200
- Resetting the Logic Board 201
- Logic Board Battery 202
- Logic Board LEDs 203
- Logic Board LEDs Locator 207
- Processor and Jumper Block 208
- PCI Expansion Slots 210
- Video I/O Card 211
- SDRAM Do’s and Don’ts 213
- Power Supply Verification 216
- HFS Plus Formatted Drives 221
- VGA-to-Macintosh Adapters 224
- Symptom Charts 225
- Error Beeps 235
- Video and Sound 237
- Hard Drive 244
- CD-ROM and DVD-ROM Drives 246
- Network Problems 255
- Miscellaneous 261
- Upgrades 262
- DRAM Upgrade 263
- DRAM DIMM 265
- Installation 265
- Drive Upgrades 267
- Supported Drives 269
- SCSI ID Numbers 270
- SCSI Drive 271
- Upgrade Procedure 271
- Retainer 272
- Power Cable 273
- ATA Hard Drive 274
- SCSI Hard Drive 274
- Drive Carrier 274
- Power Cable P2 275
- Power Cable P3 275
- Sample SCSI Hard 277
- Drive and Cable 277
- Configurations 277
- Zip Drive Upgrade 279
- PCI Expansion 280
- PCI Card 282
- Exploded View 290
- Exploded View 1 291
- Exploded View 2 292
- Exploded View 3 293
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