Apple Power Macintosh 7200/75 Specifications download pdf (Page 55)

Troubleshooting Symptom Charts/Video - 13

Boot tone is present

and screen lights up,

but nothing is

displayed on screen

1 Reset Cuda chip. (Refer to The Cuda Chip in Basics for

instructions.)

2 Reset logic board. (Refer to Resetting the Logic Board in

Basics for instructions.)

3 Replace monitor cable.

4 Test with known-good monitor. Replace monitor if

necessary. Refer to appropriate monitor manual to

troubleshoot defective monitor.

5 Replace logic board. Retain customer's DIMMs.

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 157 158

Power Macintosh 7200 1
Series/WS 7250 1
Overview 3
Configurations 7
PowerPC 601 Microprocessor 8
Dual In-Line Memory Modules 10
Memory Configurations 11
Figure: DRAM DIMM Slots 13
Ethernet Support 14
GeoPort 14
The Cuda Chip 17
Resetting the Logic Board 18
Rear View Diagram 20
Repair Strategy 26
Ordering 26
Warranty and AppleCare 28
Speciﬁcations 29
Processor 30
I/O Interfaces 32
I/O Devices 34
Video Support 35
Disk Storage 36
Electrical 39
Physical 40
Environmental 41
Troubleshooting 42
Symptom Charts 45
Error Chords 46
Floppy Drive 56
Hard Drive 59
Peripherals 61
CD-ROM Drive 64
Miscellaneous 65
Take Apart 68
Top Housing 69
CD-ROM Bezel 72
Blank Bezel 72
CD-ROM Shield 75
Blank Shield 79
Floppy Drive Shield 79
Take Apart Floppy Drive - 12 80
2 Flip open the chassis 80
Drive Rails Floppy Drive 82
Power Cable 85
SCSI Cable 85
Retaining Clip 86
Chassis Latch 87
Drive Rails 89
Power Supply 96
Power Supply Cables 100
Chassis 102
Support Arm 102
Take Apart Speaker - 38 106
1 Swing open the 106
Speaker Cable 108
Power Actuator 109
PCI Covers 111
Take Apart PCI Covers - 44 112
Take Apart PCI Covers - 45 113
2 From the back of the 113
Rear Panel 114
PCI Cards 118
Take Apart PCI Cards - 51 119
PCI Card 120
VRAM DIMMs 121
VRAM DIMM 124
Release Latch 124
Logic Board 127
Take Apart Logic Board - 60 128
22-Pin Power Supply 130
Take Apart Logic Board - 63 131
4 Disconnect the LED and 131
Take Apart Logic Board - 64 132
5 Remove the screw inside 132
EMI Clip 134
Processor Fan 135
1 Unplug the fan 136
Replacement Note: Be sure 139
Bottom Chassis 140
Note: The bottom chassis is 141
Upgrades 142
PC Compatibility Cards 143
Power Macintosh 7600 Upgrade 144
Processor Card 152
Heat SinkProcessor Card 153
(Back of Computer) 154
Grounding Clip 154
Processor Card Heat Sink 154
Top Chassis 154
Exploded View 156
Exploded View 1 157
Power Macintosh 7200 Series 157
Exploded View 2 158

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Apple Power Macintosh 7200/75 Specifications Page 55

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