Apple LC520 Specifications Page 148
- Page / 176
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
- Macintosh LC 520/550/575 1
- Service Source 2
- Macintosh LC 520, 550, 575 2
- Product Information 4
- Compatibility Notes 5
- Disk Storage 10
- I/O Interfaces 11
- Communications 12
- Slot (LC 575) 12
- I/O Devices 13
- Sound and Video 14
- Electrical 15
- Environmental 17
- Troubleshooting 18
- Symptom Charts 20
- Floppy Drive 26
- Hard Drive 29
- CD-ROM Drive 30
- Peripheral 31
- Miscellaneous 34
- Take Apart 37
- Rear Housing 38
- Take Apart Fan - 5 42
- Push out the two latches and 42
- Analog Board 43
- Take Apart Analog Board - 8 45
- 2 Disconnect the internal 45
- Retainer 46
- I/O Door 49
- Take Apart Logic Board - 15 52
- Pull out the logic board 52
- Drive Bezel 53
- Take Apart Floppy Drive - 20 57
- Push down the latch and pull 57
- Macintosh LC 520 58
- Auto-inject Floppy 58
- Auto-inject 59
- Drive Carrier 59
- CD Connector 64
- CD Audio Adapter 64
- Adapter 64
- Take Apart Hard Drive - 31 68
- 1 Push down the latch and 68
- Chassis Harness 71
- Assembly 71
- ±Warning: Never use a 72
- Background 73
- 922-0557 75
- 922-0117 Screw 76
- EMI Shields 77
- Speaker Assembly 78
- Speaker Wires 79
- Front Panel Control Board 81
- Logic Board Connector 87
- ±Warning: This product 92
- Take Apart CRT - 56 93
- 2 Lift off the CRT 93
- Replacement Note: Be sure 93
- Internal 94
- Microphone 94
- Front Bezel 96
- Upgrades 98
- Macintosh 99
- Processor Upgrade 99
- Installation Procedure 105
- Overview 105
- Remove the 68LC040 107
- Processor from the 107
- Logic Board 107
- Removal Tool 108
- Logic Board Socket 108
- Processor 108
- Install the 68LC040 110
- Processor on the 110
- Upgrade Board 110
- Processor 111
- Prepare the Upgrade 114
- Installation 114
- Antistatic Foam 115
- Bottom Side 115
- EMI Clips 115
- Hook-and-Loop 117
- Fastener 117
- Logic Board and 122
- Additional Procedures 123
- Negative 125
- Positive 125
- Battery 131
- Replacement, LC 131
- Connector 132
- Geometry 134
- Vertical Center 136
- Horizontal Center 137
- Vertical Size 138
- Horizontal Size 139
- WARNING: 141
- High Voltage Areas 141
- Gray Bars 144
- Contrast Up Button 144
- Convergence 155
- Crosshatch I 156
- Geometric 158
- Distortion 158
- Horizontal Bow 160
- Pin Phase 160
- Vertical Angle 160
- Yoke Clamp 163
- Plastic Yoke Collar 163
- Light Meter Setup 169
- Model L-248 173
- Model 246 174
- Exploded View 175
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