4-4 Phaser 6121MFP Service Manual
General Troubleshooting
Service Diagnostic Tests
The Service Mode has the following tests in the Function menu:
• Paper Feed Test
Checks the paper feeding in the paper take-up/transport sections without
printing on the paper.
• ADF Feed Test
Check the paper feeding in the paper take-up/transport sections in the
Automatic Document Feeder.
• Check Scan Window
Check for dirt in the scanning section of the Automatic Document Feeder.
• Fax Res. Copy Test
Stores a fax image in memory and provides a printed copy.
• Scan Test
Checks the lighting of the Exposure Lamp and the movement of the Scanner
Unit.
For instruction on using these tests, see “Functional Tests” on page 6-31.
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