2H4
1-4-13
(6)developing clutch
does not operate.
Broken developing clutch
coil.
Check for continuity across the coil. If none, replace the develop-
ing clutch.
Defective harness between
developing clutch and con-
trol PWB (YC308), or
improper connector inser-
tion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective control PWB. Replace the control PWB (See page 1-5-19).
(7)MP paper feed
solenoid does not
operate.
(Duplex model only)
Broken MP paper feed sole-
noid coil.
Check for continuity across the coil. If none, replace the MP paper
feed solenoid.
Defective harness between
MP paper feed solenoid
and control PWB (YC309),
or improper connector
insertion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective control PWB. Replace the control PWB (See page 1-5-19).
(8)Duplex solenoid
does not operate.
(Duplex model only)
Broken duplex solenoid
coil.
Check for continuity across the coil. If none, replace the duplex
solenoid.
Defective harness between
duplex solenoid and control
PWB (YC317), or improper
connector insertion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective control PWB. Replace the control PWB (See page 1-5-19).
(9)Eraser lamp does
not turn on.
Defective harness between
eraser lamp (YC701) and
control PWB (YC316), or
improper connector inser-
tion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective eraser lamp
(PWB).
Replace the eraser lamp (PWB) (See page 1-5-31).
Defective control PWB. Replace the control PWB (See page 1-5-19).
(10)Paper indicator is
flashing when paper
is present in the cas-
sette.
Defective paper sensor. Replace the paper sensor.
Defective harness between
paper sensor and control
PWB (YC306), or improper
connector insertion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
(11)A paper jam in
the paper feed/con-
veying section or
fuser section is indi-
cated when the
power switch is
turned on.
A piece of paper torn from
paper is caught around reg-
istration sensor or exit sen-
sor.
Check and remove if any.
Defective registration sen-
sor on the high voltage
PWB.
Replace the high voltage PWB (See page 1-5-24).
Defective exit sensor. Replace the exit sensor.
(12)Attention indica-
tor is lit when the top
cover is closed.
Defective interlock switch
on the power source PWB.
Check for continuity across the interlock switch. If there is no con-
tinuity when the interlock switch is on, replace the power source
PWB (See page 1-5-22).
Problem Causes Check procedures/corrective measures