1-5-61
(23)
The duplex side reg-
istration motor does
not operate.
Poor contact in the duplex
side registration motor con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Broken duplex side regis-
tration motor gear.
Check visually and replace the duplex side registration motor if
necessary.
Defective duplex side regis-
tration motor.
Run maintenance item U030 and check if the duplex side registra-
tion motor operates when YC7-10, YC7-12, YC7-14 and YC7-16
on the duplex PWB go low. If not, replace the duplex side registra-
tion motor.
Defective duplex PWB.
Run maintenance item U030 and check if YC7-10, YC7-12, YC7-
14 and YC7-16 on the duplex PWB go low. If not, replace the
duplex PWB.
(24)
The duplex feed
motor does not oper-
ate.
Poor contact in the duplex
feed motor connector termi-
nals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Broken duplex feed motor
gear.
Check visually and replace the duplex feed motor if necessary.
Defective duplex feed
motor.
Run maintenance item U030 and check if the duplex feed motor
operates when YC7-2, YC7-4, YC7-6 and YC7-8 on the duplex
PWB go low. If not, replace the duplex feed motor.
Defective duplex PWB.
Run maintenance item U030 and check if YC7-2, YC7-4, YC7-6
and YC7-8 on the duplex PWB go low. If not, replace the duplex
PWB.
(25)
The duplex switch-
back motor does not
operate.
Poor contact in the duplex
switchback motor connector
terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Broken duplex switchback
motor gear.
Check visually and replace the duplex switchback motor if neces-
sary.
Defective duplex switch-
back motor.
Run maintenance item U030 and check if the duplex switchback
motor operates when YC7-18, YC7-20, YC7-22 and YC7-24 on
the duplex PWB go low. If not, replace the duplex switchback
motor.
Defective duplex PWB.
Run maintenance item U030 and check if YC7-18, YC7-20, YC7-
22 and YC7-24 on the duplex PWB go low. If not, replace the
duplex PWB.
(26)
Cooling fan motor 1
or 2 does not oper-
ate.
Broken cooling fan motor 1
or 2 coil.
Check for continuity across the coil. If none, replace cooling fan
motor 1 or 2.
Poor contact in cooling fan
motor 1 or 2 connector ter-
minals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective cooling fan motor
1.
Run maintenance item U037 and check if cooling fan motor 1
operates when YC2-1 on the fan motors drive PWB goes low. If
not, replace cooling fan motor 1.
Defective cooling fan motor
2.
Run maintenance item U037 and check if cooling fan motor 2
operates when YC2-3 on the fan motors drive PWB goes low. If
not, replace cooling fan motor 2.
Defective fan motors drive
PWB.
Run maintenance item U037 and check if YC2-1 or YC2-3 on the
fan motors drive PWB goes low. If not, replace the fan motors
drive PWB.
Defective engine PWB.
Run maintenance item U037 and check if YC13-3 on the engine
PWB goes low. If not, replace the engine PWB.
Problem
Causes
Check procedures/corrective measures
Y104350-7 Sevice Manual
Summary of Contents for d-Copia 600
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