Konica Minolta bizhub C650 Service Manual page 650

15. Jam display
15.3.14 Controller jam
A. Detection timing
Type
• A control erratic operation as it relates to the duplex unit occurs.
Controller jam • A stop command (a command to effect a forced stop) is received.
• A media error (wrong type or size of paper) occurs during a 2-sided print cycle.
B. Action
MFP board (MFPB)
Step
1 Initial check items
2 Check for the paper left in the machine.
Check to see if the size or type of the paper
specified on the control panel or printer
3
driver coincides with that of the paper actu-
ally loaded.
One possible cause is a control erratic
4 operation. So, turn OFF and ON the main
power switch and run the print cycle again.
5 Upgrade the firmware.
6 Change PRCB
7 Change MFPB
596-1
Relevant parts
Action
Field Service Ver. 8.0 Jun. 2008
Description
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
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Location (Electri-
cal component)
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