Lexmark C720 Service Manual page 113

5024-001
Symptom
The Main Motor (MM) makes
noise or continuously runs
The Transfer Drum is making
noise when rotated or it does not
rotate at all
The Transfer roll is not
transferring images or does not
turn
No power
Waste Toner Feed problems
Fans not working or making noise
Paper does not separate from
Transfer Drum
Print/Image problems
Printer does not stop when Exit
Tray is full
OPC Belt Cartridge does not
rotate or makes noise
Wrong Color Print
Action
Go to "911—Main Motor (MM)
Service Check" on page
Go to "990—Transfer Drum
Encoder Sensor (HPSEN) Service
Check" on page
Go to "White Band Service Check"
on page 2-100.
Go to "Printer No Power Service
Check" on page
"Waste Toner Feed Service
Check" on page
See "Service Error Codes" on
page 2-2. Find the failing fan and
follow the action to be taken.
Go to "Paper Discharge Service
Check" on page
Go to "Print Quality Symptom
Table" on page 2-34.
Go to "Operator Messages" on
page 2-9.
Go to "OPC Belt (Photo
Developer) Cartridge Drive
Service Check" on page
Ensure the developer clutch
connectors (DCLK, DCLY, DCLM,
DCLC) on the IOD2 P.W.B. board
are plugged into the correct position.
Note: See the wiring diagram for
proper connection.
Diagnostic Information
2-47.
2-61.
2-74.
2-76.
2-73.
2-70.
2-33