Xerox Phaser 6360, Service Manual, Page: 190 / 564

4-2 Phaser 6300/6350/6360 Service Manual
General Troubleshooting
Introduction
This section covers the start-up, Power On Self Test (POST), Service
Diagnostics, and power supply operations of the printer to aid in
troubleshooting problems not associated with a reported error. For problems
associated with an error message or code, see “Error Messages and Codes”
on page 3-1. Troubleshooting tips are available at: www.xerox.com/office/
support.
Troubleshooting procedures isolate a problem to a specific component or
subassembly. If you go through the procedures and are still unable to solve
the problem, re-read the “Theory of Operation” section for the problem area to
understand how that section of the printer functions.
System Startup
Listed here is a typical startup routine from a cold start. The printer requires
approximately 45 seconds to complete this sequence.
1. When the power switch is turned On, the ‘Health’ LED on the Image
Processor Board turns on immediately.
2. System RAM is tested. If an error is detected, RAM ERROR displays and
one or both of the Control Panel and Health LEDs alternately blink at 1/2
second intervals.
3. The Boot Loader then loads and runs POST diagnostics.
4. POST turns off the Health LED.
5. POST checks the Control Panel.
6. POST checks the keypad buffer. If a shortcut has been selected, the
printer displays Processing Input and the shortcut executes. If a random
button is pushed, or there is an indication of a button press, Processing
Input displays and POST continues. If no buttons have been pushed,
POST continues execution.
7. The display is reset (addressable area turns “Gray”).
8. The Control Panel LED cycles: Green, Yellow, Red, and then off.
9. The display backlight turns on (high intensity), with nominal contrast
display.
10. The display area is turned on, dark black for 1 second.
11. The display is cleared.
12. The display backlight turns on with nominal intensity.
13. The POST Vn.nn message displays, and tests are quickly executed.
14. For Hard Faults, the display indicates the last test run and “CALL
SERVICE”.
15. After the POST tests have successfully finished, the Xerox ‘splash screen’
displays on the Control Panel and PostScript begins initialization.
16. The Control Panel LED turns Green and the display reads Warming up -
Please wait.
17. The Control Panel LED turns Green and the display reads Ready to Print.