Xerox 6250N Service Manual - Page 121

Replace Transfer Roller or Transfer Roller is at End of Life ■ Print the Supplies Usage page to verify the remaining life and Transfer Roller install date. ■ Cycle printer power. ■ If the problem persists, follow the procedure below Note Look at the clear plastic window on the Transfer Roller. If toner is present in the center of the window the Transfer Roller is at end of life and needs to be replaced. If no toner is visible, try cleaning the CTD (ADC) Sensor. The "Transfer Roller is at End of Life" is a warning. "Replace Transfer Roller" is a hard stop. Troubleshooting Reference Table Applicable Parts Wiring and Plug/Jack Map References Toner Full Sensor, PL 5.1.13 "Xerographics 1" on page 10-23 Troubleshooting Procedure Table Steps Actions and Questions Yes No 1 Check the following for evidence of fault Replace the parts Go to Step 2. or damage: concerned. Transfer Roller PL 8.1.12 Toner Full Sensor PL 5.1.13 2 Use service diagnostics to test the Transfer Roller Toner Full Sensor. Does the Transfer Roller Toner Full Sensor function correctly? Replace the Engine Control, Board, page 8-107. Go to Step 3. 3 Remove the Transfer Roller Assembly. Go to Step 5. Verify the voltage between P/J141-2 P/J141-1 on the Transfer Roller Toner Full Sensor Harness is 0 VDC. Go to Step 4. 4 Verify the voltage between P/J141-3 Go to Step 5. P/J141-1 on the Transfer Roller Toner Full Sensor Harness is + 5 VDC. Replace Assy, Harness EEPROM PL 13.1 5 Check theTransfer Roller Toner Full Sensor Harness for continuity. See "Xerographics 1" on page 10-23. Replace the Toner Full Sensor, page 8-43. Replace the Toner Full Sensor Harness, page 8-43. 3-40 Phaser 6250 Color Laser Printer Service Manual