Kyocera DP-480

2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-90
1-4-7 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. Broken power cord. Check for continuity. If none, replace the cord.
4. Defective main
power switch.
Check for continuity across the contacts. If none, replace
the main power switch.
5. Defective power
source PWB.
Replace the power source PWB (see page 2-2-27).
6. Defective main/
engine PWB.
Replace the main/engine PWB and check for correct oper-
ation (see page 2-2-11).
(2)
Scanner motor
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.
Scanner motor and main/engine PWB (YC1)
2. Defective drive trans-
mission system.
Check if the gears rotate smoothly. If not, grease the
bushes and gears. Check for broken gears and replace if
any.
3. Defective motor. Replace the scanner motor.
4. Defective PWB. Replace the main/engine PWB and check for correct oper-
ation (see page 2-2-11).
(3)
Duplex motor 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.
Duplex motor and main/engine PWB (YC2)
2. Defective drive trans-
mission system.
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
3. Defective motor. Replace the duplex motor.
4. Defective PWB. Replace the main/engine PWB and check for correct oper-
ation (see page 2-2-11).
(4)
Toner motor 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.
Toner motor and main/engine PWB (YC12)
2. Defective motor. Replace the toner motor.
3. Defective PWB. Replace the main/engine PWB and check for correct oper-
ation (see page 2-2-11).