0500: Heating Roller Warm-Up Failure; 0501: Fusing Pressure Roller Warm-Up Failure; 0510: Abnormally Low Heating Roller Temperature; 0511: Abnormally Low Fusing Pressure Roller Temperature - Konica Minolta magicolor 7450 Service Manual

14. Service call message
14.3.23

0500: Heating Roller warm-up failure

14.3.24

0501: Fusing Pressure Roller warm-up failure

14.3.25

0510: Abnormally low Heating Roller temperature

14.3.26

0511: Abnormally low Fusing Pressure Roller temperature

14.3.27

0520: Abnormally high Heating Roller temperature

14.3.28

0521: Abnormally high Fusing Pressure Roller temperature

Fusing Unit
Step
Check the Fusing Unit for correct installa-
1
tion (whether it is secured in position).
Check the Fusing Unit, PWB-M and PU1
2 for proper connection and correct or
change as necessary.
3 Change Fusing Unit
4 Change PWB-M
5 Change PU1
14.3.29

0900: Tray 4 Elevator failure

14.3.30

0910: Tray 3 Elevator failure

14.3.31

0950: Tray 5 Elevator failure

Lift-Up Sensor (PC7)
Lift-Up Motor (M3)
Step
Check the M3 connector for proper connec-
1
tion and correct as necessary.
Check the connector of M3 for proper drive
2
coupling and correct as necessary.
3 PC7 I/O check, Sensor check
4 M3 operation check
5 Change PWB-Z
198
Relevant Electrical Parts
Action
Relevant Electrical Parts
Action
Field Service Ver. 1.0 May 2006
DC Power Supply (PU1)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
—
—
—
—
Control Board (PWB-Z)
WIRING DIAGRAM
Control Signal
—
—
PWB-Z PJ6Z PC-3 (ON)
PWB-Z PJ4Z PC-4 to 5
—
Location (Electri-
cal Component)
—
—
—
—
—
Location (Electri-
cal Component)
—
—
V-21 to 22
Q-24
—