Post Hard Fault Messages - Fuji Xerox Phaser 5500 Service Manual

POST Hard Fault Messages

POST indicates a hard fault by displaying a message on the Front Panel and blinking
the fault code on the health and Front 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
appears on the display as:
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, the
Front Panel displays "RAM Error" and the health and Front Panel LEDs alternately
blink at 1/2-second intervals. POST does not load.
Hard Error LED Blink Patterns and Messages
LED Blink Front Panel
Pattern Message
1 RAM ERROR
1+1+1 3: I/O ASIC
1+1+1+1 4: MEMORY
5+5 10: EEPROM
5+5+1 11: ETHERNET
PHY
5+5+1+1 12: CPU
INTERRUPTS
5+5+1+1+1 13: USB
5+5+5+5+1+1 22: ENGINE
COMMAND
3-6
POWER ON SELF TEST ERROR
12:CPU INTERRUPTS
CALL SERVICE
Action
No RAM present, or faulty RAM. Alternate 1/2 second
interval blink at Front Panel and health LEDs.
Image Processor Board ASIC failure. Go to "Image
Processor Isolation" on page 4-13.
Checks installed memory: walking ones address, walking
one and complement data. Tests RAM memory above
diagnostics code and data addresses. Go to "RAM
Troubleshooting Procedure" on page 4-15.
1. Switch off printer power.
2. Remove and re-install the NVRAM EEPROM.
3. Switch on printer power.
4. If the error message persists, first replace the NVRAM
EEPROM, then the Image Processor Board (Go to
page 4-13).
Image Processor Ethernet Port Failure.
Replace Image Processor Board (page 8-91).
Replace Image Processor Board (page 8-91).
Image Processor USB port failure.
Replace Image Processor Board (page 8-91).
Communication with print engine has failed. Check the
connection to the Engine Logic Board, then go to "Image
Processor Isolation" on page 4-13.
Phaser 5500 Printer Service Manual