Xerox 7700DX Service Manual - Page 97
ERROR 60 DRUM MOTOR FAILURE, Error, Chain, Front Panel Message
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Error Code Chain / Link Front Panel Message 60 04-640 ERROR 60 DRUM MOTOR FAILURE Enter Service Diagnostics Mode and run the "Print Cartridge Motor" test. Does the motor run? Yes No Remove the Rear Cover (RRP 1, on page 7-154), the Rear Cover Shield (RRP 9, on page 7-163) and the Rear Shield Bracket (RRP 10, on page 7-164). Connect the power cord and enter Service Diagnostics Mode. Measure the voltage at the Print Engine Controller Interface Board P407-4(+) (see figure page 2-46)and frame ground. Is the voltage +5 VDC? Yes No Replace the Engine Control Board (RRP 42, on page 7-206). Measure the voltage at the Print Engine Controller Interface Board P407-6(+) (see figure page 2-46) and frame ground. Does the voltage measure +24 VDC? Yes No Replace the Engine Control Board (RRP 42, on page 7-206). Measure the voltage at the Print Engine Controller Interface Board P407-1(+) (see figure page 2-46) and frame ground. Is the voltage +5 VDC? Yes No Replace the Engine Control Board (RRP 42, on page 7-206). Run the "Print Cartridge Motor" test. Does the voltage still measure +5 VDC at P407-1? Yes No Replace the Print Cartridge Drive Assembly (RRP 53, on page 7-219). Replace the Engine Control Board (RRP 42, on page 7-206). Replace the Engine Control Board (RRP 43, on page 7-207). Phaser 7700 Color Laser Printer Service Manual 2-67
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