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Error Code 126
Hot Roll Thermistor or thermistor circuits are open.
Step
Action and Questions
1
Thermistor Resistance Check, Hot Roll - The thermistor
resistance can be checked between pins 6 and 8 on the ten
pin fuser control connector on the fuser assembly. Go to
"LVPS Fuser Connectors" on page
resistance of the hot roll thermistor assembly. The
resistance measures as follows:
Thermistor Hot: approximately 4.0K ohms
Thermistor Cold: Approximately 256K ohms
Note: The resistance will vary between 4k and 256k ohms
depending on the temperature of the thermistor.
Is the resistance correct?
2
Voltage Check - Measure the voltage on J10-6. Go to
"Engine Board" on page
lamp turns off and on between approximately +1.5 V dc to
1.8 V dc.
Is the voltage correct?
Error Code 127
Backup Roll Thermistor or thermistor circuits are open.
Step
Action and Questions
1
Thermistor Resistance Check, Back Up Roll - The
thermistor resistance can be checked between pins 7and 8
on the ten pin fuser control connector on the fuser
assembly. Go to
Measure the resistance of the back up roll thermistor
assembly. The resistance measures as follows:
Thermistor Hot: approximately 4.0K ohms
Thermistor Cold: Approximately 256K ohms
Note: The resistance will vary between 4K and 256K ohms
depending on the temperature of the thermistor.
Is the resistance correct?
2-90
Service Manual
5-20. Measure the
5-1. The voltage will vary as the
"LVPS Fuser Connectors" on page
5060-XXX
Yes
Go to step 2
Find the
correct system
problem or
error code
Yes
Go to step 2
5-20.
No
Replace the
"Fuser
Assembly"
on page 4-16
Replace the
following
FRU's in
order:
1.
"LVPS" on
page 4-14
2.
"Engine
Board" on
page 4-14
No
Replace the
"Fuser
Assembly"
on page 4-16
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