Specifications

C04
∗∗
(Exposure Lamp malfunctions)
∗
Code Description Detection Timing
C0400 Exposure Lamp LA1’s
failure to turn ON
The output from the AE Sensor Board PWB-H has not
become 4.27V or less from when LA1 turns ON and the
Scanner starts a scan motion until when the Image
Leading Edge signal (BASE) turns ON (goes LOW).
C0410 Exposure Lamp LA1
turning ON at abnormal
timing
The output from PWB-H remains 3.9V or less for a
continuous 0.6-second period while the output from the
Scanner Reference Position Sensor PC1 remains LOW.
The output from PWB-H remains 3.9V or less for a
continuous 0.6-second period while the output from the
Size Reset Switch S7 remains LOW (i.e. while the
Original Cover remains closed) and PC1 remains HIGH.
0.6 sec
S7
PWB-H
1075T139CB
3.9V
H
L
0.6 sec
PC1
PWB-H
1075T138CB
3.9V
H
L
LA1
H
L
1075T137CB
ON
OFF
BASE
PWB-H 4.27V
C05
∗∗
(Fusing Unit malfunctions)
∗
Code Description Detection Timing
C0500 Warming-up failure
(Upper Fusing Heater
failure)
C0510 Abnormally low fusing
temperature (Upper
Fusing Heater failure)
The surface temperature of the Upper Fusing Roller
remains 150°C or less for a continuous 5-second period
after the copier has warmed up.
C0511 Abnormally low fusing
temperature (Lower
Fusing Heater failure)
The surface temperature of the Lower Fusing Roller
remains 140°C or less for a continuous 15 minutes period
after the copier has warmed up.
•
After the Power Switch S1 has been turned ON or the
corresponding door opened and closed after
troubleshooting, the surface temperature of the Upper
Fusing Roller does not reach:
*
60°C within 130-second.
*
120°C within 150-second after it has reached 60°C.
*
170°C within 140-second after it has reached 120°C.
*
190°C within 180-second after it has reached 170°C.
*
190°C within 120-second after the copier has left the
Energy Saver mode.
T-44