Xerox Phaser 8400 Service Manual

3-42 Phaser 8400/8500/8550 Color Printer
Troubleshooting Procedure for Heaters
Step Questions and Actions Yes No
1
1. Check the wiring running from the problem
component to the printhead.
2. Is the wiring damaged or not working
properly?
Replace the
problem wiring
harness.
Go to Step 2.
2
1. Run the appropriate diagnostic test:
37,002.47 = Left Jetstack Heater
37,003.48 = Right Jetstack Heater
37,004.40, 37,005.41 = Reservoir Heaters
2. Did the test pass?
Replace the
Printhead.
3
1. Run the appropriate diagnostic test:
37,006.42 = Drum Heater
2. Did the test pass?
Replace the
Preheater
Drum
Assembly.
4
1. Run the appropriate diagnostic test:
37,008.44 = Preheat Heater
2. Did the test pass?
Replace the
Preheater.
5
1. Run the appropriate diagnostic test:
37,009.45 = (8500/8550) All ink melters
= (8400) Ink Melt 1
37,010.46 = (8500/8550) Ink Melt 1
= (8400) Ink Melt 2
37,011.47 = (8500/8550) Ink Melt 2
= (8400) Ink Melt 3
37,012.48 = (8500/8550) Ink Melt 3
= (8400) Ink Melt 4
37,013.48 = (8500/8550) Ink Melt 4
2. Did the test pass?
Replace the Ink
loader.

Xerox Phaser 8400 Specifications

General

Brand	Xerox
Model	Phaser 8400
Category	Printer
Language	English