Service Diagnostics - Xerox Phaser 8400 Service Manual

Service Diagnostics

The printer has built-in diagnostics to aid in troubleshooting problems with the
printer. The Service Diagnostics Menu provides a means to test sensors, motors,
switches, clutches, fans and solenoids. Diagnostics also contain functions to report
printer status and some NVRAM access.
Service diagnostics are to be executed through the Control Panel by a certified service
technician only. Service Diagnostics can be entered one of two ways:
Entering Service Diagnostics without Rebooting the Printer:
This method of entering diagnostics is to allow customers to be diverted to service
diagnostics in order to perform some tests.
1. Display the Hidden Service Menu as described in "Hidden Service Menu" on
page 4-2.
2.
Scroll down to
Entering Service Diagnostics by Rebooting the Printer (8400):
1.
Turn the printer power OFF.
2. Press and hold the Back and Help buttons.
3. Turn the printer power ON while continuing to hold the Back and Help buttons
for approximately 30 seconds until the Control Panel indicates
Menu.
Entering Service Diagnostics by Rebooting the Printer (8500/8550):
1. Turn the printer power ON.
2. Wait for the Xerox
3.
Before the logo is centered on the display (stops moving), press and hold the
Back and Help buttons on the Control Panel.
4. Hold both buttons until the display reads
Initialization. Release the buttons and the printer reboots into service mode
with the Service Diagnostics menu displayed.
4-4
Enter Diagnostics
logo to begin moving across the display.
and press the OK button.
Beginning Service Mode
Phaser 8400/8500/8550 Color Printer
Diagnostic