981-Duplex Motor (Dpm1, Dpm2) Service Check - Lexmark C720 Service Manual

5024-001
981—Duplex Motor (DPM1, DPM2) Service Check
FRU
1 Gears, Belts, Rollers
2 • Duplex Motor
(DPM1)
• Duplex P.W.B. Board
3 • Duplex Motor 2
(DPM2)
• Duplex P.W.B. Board
2-56
Service Manual
Action
Check the duplex drive train for binds or
broken gears, belts or rollers.
Replace any damaged parts.
Check the resistance of the duplex motors
(DPM1).
If the resistance is approximately 7 ohms
between:
• The duplex motor 1 (DPM1) connector
CN5-1 and
– CN5-2
– CN5-3
– CN5-4
• Replace the duplex (DUP P.W.B.)
board.
If the resistance is not approximately 7
ohms, replace the duplex motor 1 (DUP1).
Check the resistance for duplex motor 2
(DPM2).
If the resistance is approximately 7 ohms
between:
• The duplex motor 2 (DPM2) connector
CN7-1 and
– CN7-2
– CN7-3
– CN7-4
• Replace the duplex (DUP P.W.B.)
board.
If the resistance is not approximately 7
ohms, replace the duplex motor 2
(DPM2).