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Procedure
1. Check CPUB for proper installation and correct as necessary.
2. Rewrite the firmware.
3.
Replace CPUB.
4.
Replace BASEB.
3.14.22 CD3C0
Contents
Trouble type
CD3C0: New board detection
Rank
C
Trouble detection condition The board is replaced with a new one.
Trouble isolation
-
Relevant electrical parts
-
Procedure
1. Wait until "Recover Data" appears. (MFP will reboot maximum 2 times by itself, it may take 5 minutes.) Touch the "Recover Data" button
and follow the instructions that appear on the control panel to restore (backup) data.
3.14.23 CD401, CD402, CD403, CD404, CD405, CD406, CD407, CD411, CD412, CD413
Contents
Trouble type
Rank
C
Trouble detection condition When abnormality is found in the communication of controller.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Check whether there is a strong electromagnetic noise source near the main body.
2. Check the connector between the control panel-BASEB CN7 for proper connection and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4.
Replace CPUB.
5.
Replace BASEB.
3.14.24 CD701, CD702, CD703
Contents
Trouble type
Rank
C
Trouble detection condition CD701: A mechanical controller flash ROM writing sequence is interrupted in its mid-operation due to, for
example, power being shut off.
CD702: An erase error or other device fault occurs during mechanical controller flash ROM writing.
CD703:
Irregular data is received during FW downloading.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power
switch.
2. Check CPUB for proper installation and correct as necessary.
• Base board (BASEB)
• CD401: NACK command incorrect
• CD402: ACK command incorrect
• CD403: Checksum error
• CD404: Receiving packet incorrect
• CD405: Receiving packet analysis error
• CD406: ACK receiving timeout
• CD407: Retransmission timeout
• CD411: Touch panel board error
• CD412: Touch panel type mismatch
• CD413: Electrostatic touch panel operation mode error
• Control panel
• CPU board (CPUB)
• Base board (BASEB)
• CD701: Mechanical controller flash ROM writing error
• CD702: Mechanical controller flash ROM device error
• CD703: FW download communication fault
• Places are changed in the order of write completion pulses.
• A write completion pulse is received for a memory for which binary writing is not permitted.
• Final checksum mismatch in FW download
• Two-minute timeout (no response from CTL, the number of transfer data items less than the specified)
• CPU board (CPUB)
• Base board (BASEB)
L TROUBLESHOOTING > 3. TROUBLE CODE
L-54
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