Error Troubleshooting
Phaser 7100 Service Manual Xerox Internal Use Only2-400
124-381 CRUM Market/ 124-391 CRUM OEM Fail MCU
CRUM error has occurred due to one of the following problems.
• At least one of the CRUM Destination Value that is stored in the 3 locations is not matched (the
contents stored in the MCU PWB do not match).
• At least one of the CRUM OEM Destination that is stored in the 3 locations is not matched (the
contents stored in the MCU PWB do not match).
Applicable Fault Codes
• 124-381: One of CRUM destinations is different from the others (IOT). #Case-(2)
• 124-391: One of CRUM OEM destinations is different from the others (IOT). #Case-(2)
Initial Actions
• Power cycle the printer.
• If the problem persists, perform the following procedure
.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• MCU PWB, PL 12.1.15
Troubleshooting Procedure
Step Actions and Questions
1. Perform DC132 Machine Serial Number Settings on page 2-47,
SYS 1
.
2. If the problem persists, replace the MCU PWB (REP 12.4 MCU PWB on page 4-206).
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