Ram Memory Fault Isolation - Fuji Xerox Phaser 5500 Service Manual

RAM Memory Fault Isolation

Image Processor Board RAM memory has failed or is not installed. A minimum of
128 MB of RAM must be installed for proper printer operation. The Phaser 5500
supports PC133 SDRAM in 144-pin SO-DIMM form. The printer accepts modules of
128, or 256 MB in combinations to a total of 512 MB.
Applicable POST Error Codes
Hardware Failure: RAM Memory Slot 1 Checksum
Hardware Failure:RAM Memory Slot 2 Checksum
Hardware Failure:RAM Memory Slot 1 Rejected
Hardware Failure:RAM Memory Slot 2 Rejected
Power On Self Test Error 4:Memory
Power On Self Test Error 15:RAM DIMM
Power On Self Test Error RAM ERROR
POST RAM Memory Failure Troubleshooting Reference
Applicable Parts
SDRAM Memory
Image Processor Board
Initial Actions:
Check that the RAM devices aremaking positive contact with their connectors.
1. Power off the printer.
2. Remove and re-install the RAM memory after verifying it meets the Xerox
specifications. See "Memory Specifications" on page 1-11. If the problem
persists, use the following procedure to correct it.
POST RAM Memory Failure Troubleshooting Procedures
Step Actions and Questions
1
Power on the printer.
Is RAM ERROR displayed on the Front
Panel?
2
Is POWER ON SELF TEST ERROR
4: MEMORY displayed on the Front
Panel?
General Troubleshooting
References
Image Processor Board P/J Locator (page 10-14)
PL8.1 Print Engine Electrical (page 9-40)
Yes
Go to Step 5.
Go to Step 5.
No
Go to Step 2.
Go to Step 3.
4-15