Xerox 4400DT Service Manual - Page 128
Image Processor Isolation, High-Voltage Power Supply (HVPS) Assembly, Actions and Questions
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Image Processor Isolation Image Processor Isolation Procedure Step Actions and Questions Yes No 1 1. Switch the printer power OFF. Go to step 3. Go to step 2. 2. Disconnect all cables connected to the rear of the Image Processor Board. 3. Remove the Left Interface Cover (RRP 1.1 on page 6-6). 4. Remove all options from the Image Processor Board. Switch the printer power ON. Does the printer boot up correctly and is Ready displayed on the Front Panel (if no options are installed, follow the No path)? 2 1. Switch the printer power OFF. Problem 2. Remove then reinstall the Image Processor Board solved. (RRP 9.2 on page 6-88) to re-seat the connection with the Engine Logic Board. 3. Switch the printer power ON. Does the printer boot up correctly and is Ready displayed on the Front Panel? Replace the Image Processor Board (RRP 9.2 on page 6-88). 3 1. Switch the printer power OFF. Repeat the Replace the 2. Reinstall one of the removed options or cables. 3. Switch the printer power ON. last step with option or the next cable just Does the printer boot up correctly and is Ready option or installed. displayed on the Front Panel? cable until the problem is found. High-Voltage Power Supply (HVPS) Assembly HVPS Assembly Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Open the Front Cover. Go to step 2. Replace the 2. Remove the Print Cartridge. 3. Inspect both spring-loaded High Voltage contacts on the Transport Chute Assembly and the terminals on the Print Cartridge. Transport Chute Assembly (RRP 6.1 on Are the spring-loaded contacts in good condition and making proper contact with the Print Cartridge terminals? page 6-65) or the Print Cartridge (PL 8.1 on page 7-20) as necessary. Phaser 4400 Laser Printer Service Manual 3-31
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