Error (115) Fuser Heater Off; Error (116) Fuser Unit Missing - Lexmark Optra C Service Manual

5045-001

Error (115) Fuser Heater Off

FRU
1 Fuser upper
heater /
Thermoswitch
2 Fuser lower
heater /
Thermoswitch
3 Power supply
unit (low
voltage)
DC controller
PCB
Mechanical
controller PCB

Error (116) Fuser Unit Missing

FRU
1 Fuser
Action
Turn the power switch OFF, and remove the fuser
unit. Is there continuity between fuser unit
connectors J21-1 and J21-2? See
(J21)" on page 5-37. Check the continuity of both the
fuser upper heater and the thermoswitch, and
replace defective parts.
Is there continuity between fuser unit connectors
J21-3 and J21-4 when the fuser unit is removed?
See "Fuser Connector (J21)" on page
the continuity of both the fuser lower heater and the
thermoswitch, and replace defective parts.
Replace the power supply unit. If the failure remains,
replace and check as follows:
1. DC controller PCB, see
Information" on page
2. Mechanical controller PCB.
Action
Ensure the fuser unit is secure and making electrical
contact.
"Fuser Connector
5-37. Check
"DC Controller Board
2-2.
Diagnostic Information 2-17