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U2-91
PCU PWB EEPROM check sum error
Trouble content
Detail
PCU
Cause
PCU PWB EEPROM trouble
PCU PWB trouble
EEPROM socket contact trouble
Check & Remedy
Replace the PCU PWB EEPROM.
Replace the PCU PWB.
Check contact of the EEPROM socket.
Use SIM16 to cancel the trouble. (The check sum
error detection data are calculated again to reset the
proper check sum data.)
To avoid missing of the counter data and the
adjustment values, use this simulation to save the
counter data and the adjustment values. (If there is a
printer option, use SIM22-01 to save the counter data
and the adjustment values.)
U7-50
MFPC PWB - Vendor machine
communication error
Trouble content
Communication error between the MFP and the serial
vendor.
Detail
MFP
Cause
Improper setting of the vendor machine specifications
(SIM26-3).
Vendor machine trouble.
MFPC PWB trouble.
Connector, harness connection trouble.
Strong external noises.
Check & Remedy
Cancel the error by turning OFF/ON the power.
Check the connector and the harness in the
communication line.
Change the specifications of the vendor machine
(SIM26-3).
Replace the MFPC PWB.
U7-51
Vendor machine error
Trouble content
Detail
MFP (Notification of a trouble from the serial vendor)
Cause
Serial vendor machine trouble.
Connector, harness connection trouble.
Check & Remedy
Err.XX is displayed on the operation panel of the
vendor. (XX is the detail code.)
Repair the vendor machine referring to the detail code.
Check the connector and the harness in the
communication line.
UC-02
CPT - ASIC error
Trouble content
Detail
SCU
Cause
SCU PWB trouble. (CPT-ASIC trouble.)
Check & Remedy
Replace the SCU PWB.
UC-20
DOCC ASIC error
Trouble content
Detail
SCU
Cause
SCU PWB trouble. (DOCC-ASIC trouble.)
Check & Remedy
Replace the SCU PWB.
MX-M316N TROUBLESHOOTING 7 – 19
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