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Phaser 7700 Color Laser Printer Service Manual
70
71
72
73
09-360
09-361
09-362
09-363
ERROR 70 PRINT CARTRIDGE 1 COMMUNICATIONS
FAILURE
ERROR 70 PRINT CARTRIDGE 2 COMMUNICATIONS
FAILURE
ERROR 70 PRINT CARTRIDGE 3 COMMUNICATIONS
FAILURE
ERROR 70 PRINT CARTRIDGE 4 COMMUNICATIONS
FAILURE
Swap the suspect print cartridge with any other cartridge.
Close all doors.
Does the problem follow the suspect print cartridge?
Yes No
Remove the cartridge in problem location and carefully inspect the connector damage.
Is the connector damaged?
Yes No
Measure the voltage between pin 4 of the suspect print cartridge connector and
frame
ground.
Does the voltage m3.3 VDC?
Yes No
Measure the voltage between each of P405A-4, -8 (see figure page 2-46),
P405B-4, -8 (see figure page 2-46) and frame ground.
Are all vo3.3 VDC?
Yes No
Replace the Engine Control Board (RRP 42, on page 7-206).
Replace the harness between the Engine Control Board and the suspect print
cartridge connector.
Replace the Engine Control Board (RRP 42, on page 7-206).
Replace the Print Cartridge Plate Assembly (RRP 26, on page 7-182).
Replace the Print Cartridge.
Error
Code
Chain /
Link
Front Panel Message
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