Table of Contents
Advertisement
Problem
(23)
The duplex side reg-
istration motor does
not operate.
(24)
The duplex feed
motor does not oper-
ate.
(25)
The duplex switch-
back motor does not
operate.
(26)
Cooling fan motor 1
or 2 does not oper-
ate.
Y104350-7
Causes
Poor contact in the duplex
side registration motor con-
nector terminals.
Broken duplex side regis-
tration motor gear.
Defective duplex side regis-
tration motor.
Defective duplex PWB.
Poor contact in the duplex
feed motor connector termi-
nals.
Broken duplex feed motor
gear.
Defective duplex feed
motor.
Defective duplex PWB.
Poor contact in the duplex
switchback motor connector
terminals.
Broken duplex switchback
motor gear.
Defective duplex switch-
back motor.
Defective duplex PWB.
Broken cooling fan motor 1
or 2 coil.
Poor contact in cooling fan
motor 1 or 2 connector ter-
minals.
Defective cooling fan motor
1.
Defective cooling fan motor
2.
Defective fan motors drive
PWB.
Defective engine PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex side registration motor if
necessary.
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.
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.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex feed motor if necessary.
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.
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.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex switchback motor if neces-
sary.
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.
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.
Check for continuity across the coil. If none, replace cooling fan
motor 1 or 2.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
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.
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.
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.
Run maintenance item U037 and check if YC13-3 on the engine
PWB goes low. If not, replace the engine PWB.
Sevice Manual
1-5-61
Advertisement
Table of Contents
