Samsung ML-7000P Service Manual page 8

Error status
Main Motor
Paper Empty
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Check
- Refer to DCU mode "00"
1. Check the supply voltage. (+24Vdc)
Engine board CN1 -2,5 pin
2. Check the Motor cable for cuts or
pinched wiring.
3. Check the resistance for Motor between
pin No. 1 to 3(4 to 6)
The resistance of motor : 3• approx.
4. Check the Engine board.
5. Check Gear of Motor Drive Unit.
- Check all the gear for correct
installation.
1) 1'st Cassette Feeder
1. Check the paper empty sensor
- Refer to DCU mode "07"
2. Check the paper empty sensor actuator.
2) Multi Purpose Feeder
1. Check the paper empty sensor for MP.
- Refer to DCU mode "07"
2. Check the MP paper empty sensor
actuator.
3) Second Cassette Feeder
1. Check the paper empty sensor for SCF
- Refer to DCU mode "07"
2. Check the paper empty sensing actuator
for SCF.
Solution
1. Replace to cover open unit.
2. Replace cable
3. Replace Motor.
4. Replace Engine board.
5. Replace Motor Drive Unit
- Refer to "4-6, 6-9"
1. Replace the paper empty sensor on
Engine board.
2. Replace paper empty sensor actuator.
1. Replace MP sensor assembly.
2. Replace MP paper empty sensor
actuator.
If not improved, replace
the engine board
1. Replace the paper empty sensor on
S.C.F board.
2. Replace MP paper empty sensor
actuator.