Xerox Phaser 6360

Phaser 6300/6350/6360 Service Manual 4-5
General Troubleshooting
POST Hard Fault Messages
POST indicates a hard fault by displaying a message on the Control Panel
and blinking the fault code on the Health and Control Panel LEDs. There are
long and short blinks. A long blink is worth 5 and a short blink is worth 1. As
an example, a blink pattern flashed as long, long, short, short, represents fault
code 5+5+1+1=12, indicating a failure in the CPU interrupt test. Along with the
blinking LEDs, the failed test also displays as:
POWER ON SELF TEST ERROR
12:CPU INTERRUPTS
CALL SERVICE SUPPORT
The exception to this reporting scheme is a RAM test error. The Boot Loader
executes a RAM test prior to loading POST. If the Boot Loader encounters a
RAM error, POST does not load.
Fault Isolation
Isolate a fault to the print engine or Image Processor Board by printing an
Engine Test Print (
page 5-10).
■ If the printer successfully prints the Print Engine Test Print, replace the
Image Processor Board (
page 8-99).
■ If the Printer fails to print the Print Engine Test Print, troubleshoot the print
engine starting with the AC power supply on (
page 4-15).
Hard Error LED Blink Patterns and Messages
LED Blink
Pattern
Control Panel
Message
Action
1 RAM ERROR No RAM present, or faulty RAM. Alternate 1/2
second interval blink at Control Panel and Health
LEDs if the controller has initialized the FPGA.
Otherwise, only the Health LED blinks.
1+1 Control Panel disconnected or defective.
5+5 10: EEPROM 1. Switch Off printer power.
2. Remove and re-install the NVRAM EEPROM.
3. Switch On printer power.
4. If the error message persists, replace NVRAM ,
and then the Image Processor Board.
5+5+1+1 12: CPU
INTERRUPTS
Replace Image Processor Board (page 8-99).
5+5+5+1 16: Min RAM Add additional RAM memory.
5+5+5+5+1+
1
22: Engine
Command
If a failure is detected, Reseat Controller Board is
displayed (
page 4-13).