Xerox 4400DT Service Manual - Page 157
Vertical Deletions Troubleshooting Procedure cont'd., Are the Heat Roller and the Pressure Roller free
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Vertical Deletions Troubleshooting Procedure (cont'd.) Step Actions and Questions Yes No 4 Inspect the paper path, between feed and exit, for contamination or obstructions. Is the paper path free of obstructions? Go to step 5. Remove obstructions or contamination from the paper path. 5 Inspect the Transfer Roller Assembly for contamination Go to step 6. Replace the and wear. Transfer Is the Transfer Roller free of contamination and wear? Roller Assembly (RRP 7.1 on page 6-79). 6 Warning: If the printer has been switched on, Go to step 7. Replace the the Fuser will be hot. Fuser 1. Open the Rear Cover and remove the Fuser Assembly. 2. Rotate the fuser idler gear manually and inspect the Assembly (RRP 6.2 on page 6-66). Heat Roller. 3. Open the fuser jam access cover. 4. Rotate the fuser idler gear manually and inspect the Pressure Roller. Are the Heat Roller and the Pressure Roller free of surface defects and contamination? 7 Replace in order until the problem is solved: I Transfer Roller Assembly (RRP 7.1 on page 6-79) I Laser Assembly (RRP 7.4 on page 6-82) I Fuser Assembly (RRP 6.2 on page 6-66) I Engine Logic Board (RRP 9.3 on page 6-89) 3-60 Phaser 4400 Laser Printer Service Manual