Troubleshooting; Electrical Interface Rap Table; Media And Paper Path Rap Table - Xerox Phaser 840 Service Manual

Troubleshooting

The troubleshooting section discusses Repair Analysis Procedures (RAPs) for the Phaser
840/850/860 printers. This section is broken into the following groups:
Network Event Logs
I
Electrical Interface Problems
I
Media and Paper Path Problems
I
Printing and Print Image Quality Problems
I
Windows Printing problems
I
Macintosh Printing problems
I
Cap/Wipe/Purge Troubleshooting: Evaluating and troubleshooting the
I
printhead cap/wipe/purge system can be found on page 106.
Electrical Interface Problems (RAP) Table
Table 3-1 Electrical Interface RAP Table
Problem
System Power-Up Sequence
Inoperative Printer: No Lights, No Sound on power-up
Verifying Main Board CPU Operation
Verifying Print Engine operation by its startup page
Verifying Power Supply and Measuring Voltages
Inspecting the power supply fuses
Testing for shorted drivers
Testing for a shorted motor
Testing motor and solenoid resistances
Media and Paper Path Problems (RAP) Table
Table 3-2 Media and Paper Path RAP Table
Problem
Media-Based Problems
Paper Pick Errors
Print Transfer Jams
Checking the Process Motor and Drive Train
Media skews passing through the Paper Path
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