Konica Minolta bizhub C353P Service Manual page 500

Field Service Ver. 1.0 Oct. 2007
20.5.92 CD3##: NVRAM data error
• When the data stored due to the NVRAM trouble is lost, backup data can be used for res-
toration.
• Trouble code [C-D370] will be displayed when multiple errors (over 5) of NVRAM data
are detected, which can be restored with one restoration command.
• Data backup will be automatically performed every hour. Backup can also be performed
manually with the following setting.
[Service Mode] → [Enhanced Security] → [NVRAM Data Backup]
See P.380
A. Recovery procedure from NVRAM data error
1. On the trouble code screen, highlight "Recover Data" and press the Menu/Select key.
2. Select [Yes] and press the Menu/Select key.
3. The screen will be shifted to the data restoration screen to perform data restoration.
NOTE
• When the restoration is performed in a short time, data restoration screen may not
be displayed.
4. Check the message which indicates that the data restoration was successfully con-
ducted. Turn OFF the power switch and turn it ON again more than 10 seconds after.
NOTE
• In case it failed to restore data, return to the trouble code screen.
20.5.93 CD401: NACK command incorrect
20.5.94 CD402: ACK command incorrect
20.5.95 CD403: Checksum error
20.5.96 CD404: Receiving packet incorrect
20.5.97 CD405: Receiving packet analysis error
20.5.98 CD406: ACK receiving timeout
20.5.99 CD407: Retransmission timeout
MFP board (MFPB)
Step
Check whether there is an strong electro-
1
magnetic noise source near the main body.
Check the connectors on MFPB for proper
2
connection and correct as necessary.
3 Change MFPB.
Relevant parts
Action
20. Malfunction code
WIRING DIAGRAM
Location (Electri-
Control Signal
cal Component)
—
—
—
—
—
—
455