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Problem
(21)
Developer stop
clutch does not
operate.
(22)
MP solenoid does
not operate.
(23)
Feedshift solenoid
does not operate.
(24)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 1.
(25)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 2.
Service Manual
Causes
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective clutch.
3. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective solenoid.
3. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Defective solenoid.
3. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Deformed actuator of
the paper sensor.
3. Defective paper sen-
sor.
4. Defective PWB.
1. Defective connector
cable or poor con-
tact in the connector.
2. Deformed actuator of
the paper sensor.
3. Defective paper sen-
sor.
4. Defective PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Developer stop clutch and engine PWB (YC16)
Replace the developer stop clutch.
Replace the engine PWB and check for correct operation
(see page 1-5-33).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
MP solenoid and engine PWB (YC25)
Replace the MP solenoid.
Replace the engine PWB and check for correct operation
(see page 1-5-33).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Feedshift solenoid and engine PWB (YC21)
Replace the Feedshift solenoid.
Replace the engine PWB and check for correct operation
(see page 1-5-33).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Paper sensor 1/2 and engine connect PWB (YC7)
Engine connect PWB to engine PWB (YC4)
Check visually and replace if necessary.
Replace the paper sensor 1/2.
Replace the engine PWB or engine connect PWB and
check for correct operation (see page 1-5-33).
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Paper sensor 3/4 and engine PWB (YC27)
Video PWB to main PWB (YC9)
Check visually and replace if necessary.
Replace the paper sensor 3/4.
Replace the engine PWB or main PWB and check for cor-
rect operation (see page 1-5-48, 1-5-31).
1-4-86
2NP
Y116141-8
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