Utax PF 810, Service Manual

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3PJ
1-4-5
1-4-3 Electric problems
If the part causing the problem was not supplied, use the unit including the part for replacement.
Troubleshooting to each failure must be in the order of the numbered symptoms.
Problem Causes Check procedures/corrective measures
(1)
The machine does
not operate when
the main power
switch is turned on. 1. No electricity at the
power outlet.
Measure the input voltage.
2. The power cord is
not plugged in prop-
erly.
Check the contact between the power plug and the outlet.
3. The right cover 3 is
not closed com-
pletely.
Check the right cover 3.
4. Broken power cord. Check for continuity. If none, replace the cord.
5. Defective PWB. Replace the PF main PWB (see page 1-5-4).
(2)
PF paper feed
clutch 1 and 2
does not operate. 1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
PF paper feed clutch 1 and PF main PWB (YC4)
PF paper feed clutch
2 and PF main PWB (YC7)
2. Defective clutch. Replace the drive unit.
3. Defective PWB. Replace the PF main PWB and check for correct operation
(see page 1-5-4).
(3)
PF conveying
clutch does not
operate. 1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
PF conveying clutch and PF main PWB (YC4)
2. Defective clutch. Replace the PF conveying clutch.
3. Defective PWB. Replace the PF main PWB and check for correct operation
(see page 1-5-4).
(4)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette. 1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
PF paper sensor 1 and PF main PWB (YC3)
PF paper sensor 2 and PF main PWB (YC6)
2. Deformed actuator of
the PF paper sensor.
Check visually and replace if necessary.
3. Defective PF paper
sensor 1 and 2.
Replace PF paper sensor1 and 2.
4. Defective PWB. Replace the PF main PWB and check for correct operation
(see page 1-5-4).