Xerox 4400DT Service Manual - Page 137
Envelope No Paper Sensor Troubleshooting Procedure cont'd., Actions and Questions
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Envelope No Paper Sensor Troubleshooting Procedure (cont'd.) Step Actions and Questions Yes No 4 1. Switch the Printer power OFF and remove the Go to step 7. Go to step 5. Envelope Feeder. 2. Check for continuity between J418 Pin 4 (Envelope Connector Assembly) and P/J23 Pin 3 on the Engine Logic Board. Is there continuity between the pins? 5 1. Remove the Front Cover (RRP 1.6 on page 6-11) and Replace the Go to step 6. the Left Front Cover (RRP 1.7 on page 6-12). 2. Check for continuity between P/J41 Pin 5 on the Connector PWB and P/J23 Pin 3 on the Engine Logic Board. Envelope Connector Assembly (RRP 4.10 Is there continuity between the pins? on page 6-56). 6 Check the Connector Harness Assembly for proper Replace the Repair or connection and for defective wires. Connector replace as Is the harness in good condition? PWB (RRP 9.7 on necessary. page 6-94). 7 Replace the Envelope Feeder PWB (RRP 13.3 on page 6-159). If the problem persists, replace the Envelope Feeder No Paper Sensor (RRP 13.10 on page 6-166). 3-40 Phaser 4400 Laser Printer Service Manual
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