921-Fuser Thermistor Service Check - Lexmark C720 Service Manual

5024-001
921—Fuser Thermistor Service Check
FRU
1 Fuser Unit
2 Fuser Connector
3 • Fuser Unit
• IOD1 P.W.B. Board
• Main Engine (MCTL
P.W.B.) Board
HO Fuser Unit
Action
Ensure the fuser is properly installed.
If the fuser is damaged, replace the fuser
unit.
Note: The fuser unit is a customer order
supply.
Check the fuser connector for damage
and replace, if necessary.
Ensure the fuser connector, FUCN, to the
main engine (MCTL P.W.B.) board is
properly connected.
If the problem still exists, replace the
following parts in the order given until the
error is cleared.
• Fuser unit
• IOD1 P.W.B. board
• Main engine (MCTL P.W.B.) board
Diagnostic Information
2-55