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Phaser 7700 Color Laser Printer Service Manual
Error Codes and Messages Troubleshooting
Some Error Codes create “Tech Rep Faults” which must be cleared, see Clear
Tech Rep Faults on page 6-149.
Voltage Measurements
Many voltage measurements are required for expeditious troubleshooting.
The following illustration is provided at this location for your convenience in
locating most of the connectors/pins from which voltage measurements are
taken. Cross references (links) are provided.
Figure 2-1 Voltage Measurement Point Locations
81
19
A1
B20
A20
B1
A15
B1
A1
B15
A14
B1
B15
A1
B1
A15
A14
B1
A1
B14
A1
B14
B15
A1
B1
A15
A13
B1
A1
B13
A15
B1
A1
B15
A8
B1
A1
B8
A15
B1
A1
B15
9
1
8
1
4
1
B20
B1
A1
A20
6
1
S7700-428
P534
P401
P400
P411
P409
P408
P406
P405
P407
P404
P530
P532
P535
P533
P531
P537
P536
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