Kyocera FS-920 - Page 52

2GL/2FV/2FW
1-5-10
6050
(E4)
Broken fuser thermistor
• The thermistor AD value is less than 1
for 3 s.
Defective the fuser
thermistor.
Follow the flow chart.
Defective the
engine/high volt-
age PWB.
6400
(A0)
Zero cross signal error
• While fuser heater ON/OFF control is
performed, the zero-cross signal is not
input within 3 s.
Defective the
power source
PWB.
Follow the flow chart.
Defective the
engine/high volt-
age PWB.
Code Contents
Remarks
Causes Check procedures/corrective measures
No
Start
Yes
Replace engine/high
voltage PWB.
See page 1-6-17.
Replace fuser thermistor.
See page 1-6-11.
Turn power switch off,
and remove power cord.
Detach YC7 connector
on the engine/high
voltage PWB.
Measure resistance
between pins 1 and 2 of
the detached connector.
Open
(infinite)?
No
OK?
End.
Start
Yes
Replace the power
source PWB.
See page 1-6-17.
Replace the engine/high
voltage PWB.
See page 1-6-17.