Post Hard Fault Messages; Fault Isolation - Xerox Phaser 6360 Service Manual

POST Hard Fault Messages

Fault Isolation

Phaser 6300/6350/6360 Service Manual
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.
Hard Error LED Blink Patterns and Messages
LED Blink Control Panel
Pattern Message
1 RAM ERROR
1+1
5+5 10: EEPROM
5+5+1+1 12: CPU
INTERRUPTS
5+5+5+1 16: Min RAM
5+5+5+5+1+ 22: Engine
1 Command
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).
Action
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.
Control Panel disconnected or defective.
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.
Replace Image Processor Board (page 8-99).
Add additional RAM memory.
If a failure is detected, Reseat Controller Board is
displayed (page 4-13).
General Troubleshooting
4-5