Xerox 4400DT Service Manual - Page 167
Unfused Image Troubleshooting Procedure
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Unfused Image Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Replace the paper with fresh, dry paper from an unopened ream. 2. Print a test print. Go to step 2. Problem solved. Is the problem still present? 2 Scroll to Fuser Configuration Menu and change the Go to step 3. Problem temperature setting to High for the paper type. solved. Is the problem still present? 3 Scroll to Fuser Configuration Menu and change the Go to step 4. Problem temperature setting to Extra High for the paper type. solved. Is the problem still present? 4 Is the overall print density within specification? Go to step 5. Go to Light (Undertoned) Prints on page 3-54. 5 1. Open the Rear Cover. Go to step 6. Clean or 2. Remove the Fuser Assembly. replace the 3. Rotate the fuser idler gear manually and inspect the Heat Roller. 4. Open the fuser jam access cover. Rotate the fuser idler gear manually and inspect the Pressure Roller. Fuser Assembly (RRP 6.2 on page 6-66). Are the Heat Roller and the Pressure Roller free of surface defects and contamination? 6 1. Open the fuser jam access cover. Go to step 7. Replace the 2. Rotate the fuser idler gear manually and inspect the Fuser contact between the Heat Roller and the Pressure Roller along the rotation. Assembly (RRP 6.2 on Are the Heat Roller and the Pressure Roller page 6-66). contacting each other uniformly? 7 Replace the following, in order, until the defective component is found: I Fuser Assembly (RRP 6.2 on page 6-66) I Engine Logic Board (RRP 9.3 on page 6-89) I LVPS PWB (RRP 9.5 on page 6-91). 3-70 Phaser 4400 Laser Printer Service Manual
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