Lexmark E238 Service Manual page 120

4511-xxx
Fuser service check
FRU
Fuser power cable
LVPS/HVPS
Fuser
(continued)
Fuser
2-88
Service Manual
Action
Step 2: No continuity
Check the lamp cable for continuity.
• If correct, replace the fuser.
• If incorrect, replace the lamp cable.
Disconnect the thermistor cable from J16 on the
controller card.
Measure the resistance across the ends of the
thermistor cable.
Replace the fuser assembly if the resistance is
lower than 1K ohm or shorted.
Note: Resistance measures approximately
240K ohms when cool and 1K ohms hot.