Xerox 4400DT Service Manual - Page 81
Tray Failure Troubleshooting Procedure cont'd., Actions and Questions, Is the resistance 90 -15 ohms?
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Page 81 highlights
Tray Failure Troubleshooting Procedure (cont'd.) Step Actions and Questions Yes No 6 On the Tray 1 Size PWB, measure continuity between Go to step 7. Replace the P/J331 pin 12 to P/J61 pin 1. Tray 1 Size Is there continuity between the two pins? PWB (RRP 3.13 on page 6-42). 7 Check the wiring between P/J67 pin 5 on the Tray 1 Replace the Replace the Feeder PWB and the bottom pin on the Paper Feeder Tray 1 Socket and Socket (P/J672). Feeder PWB Harness (PL Is the wiring in good condition? (RRP 3.9 on 3.1 on page 6-37). page 7-10. 8 On the paper tray, measure the resistance between the Go to step 9. Go to Tray middle and bottom terminals on the Paper Feeder Motor Socket. Assembly Is the resistance 90 ±15 ohms? Checkout on page 3-26. 9 On the paper tray, measure the resistance between the Go to step Replace the top and bottom terminals on the Paper Feeder Socket. 10. Socket and Is there continuity between the two pins? Harness (PL 3.1 on page 7-10. 10 Replace the following parts one at a time until the problem is resolved: I Stack Height Sensor (RRP 3.4 on page 6-31) I Feeder PWB (RRP 3.9 on page 6-37) I Size 1 PWB (RRP 3.13 on page 6-42) I Engine Logic Board (RRP 9.3 on page 6-89) 11 Remove and reinstall the Tray indicated. Does the C3 error code still appear? Go to step 12. Problem solved. 12 1. Exchange Tray 1 with the Tray generating the "C3" Go to step Go to step code. 19. 13. 2. Print a test print from each tray. Does the error code now indicate a Tray 1 failure? 13 Does the error code indicate a Tray 2 failure? Go to step Go to step 16. 14. 14 1. Remove Tray 3 from the feeder. Go to step Go to step 2. Check the voltage between the lower terminal on the 18. 15. Paper Feeder Connector and frame ground. Is the voltage +24 VDC? 15 Check the wiring harness between the Tray 2 Size PWB (P/J53) and the Tray 3 Size PWB (P/J54). Is the harness in good condition? Replace the Tray 3 Size PWB (RRP 11.19 on page 6-139), then the Tray 3 Feeder PWB (RRP 11.9 on page 6-128. Replace the Size Harness Assembly (PL 11.1 on page 7-27). 2-44 Phaser 4400 Laser Printer Service Manual
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