Action Yes No
Step 2
• Check the fuser cables JTHERM1 and JEXIT for proper connection to
the controller board.
• Check the cable PCN5 for proper connection to the power supply.
Are they properly connected?
Go to step 3. Reseat the cables.
Step 3
Are the cables JTHERM1, JEXIT and PCN5 free of damage?
Go to step 4. Replace the fuser. See
“Fuser removal” on
page 238.
Step 4
a Turn off the printer.
b Remove the rear door and cover.
c Disconnect the fuser cable connected to PCN5 of the power supply.
d Check for approximate correct resistance on the fuser cable:
• 220V fuser—43 ohms
• 110V fuser—10 ohms
• 100V fuser—8 ohms
Is the resistance equal to any of the above values?
Perform an LVPS
service check. See
“LVPS service check”
on page 89.
Replace the fuser. See
“Fuser removal” on
page 238.
Step 5
Check the fuser rollers, belts and gears for damage and debris.
Are they free of damage and debris?
Perform a cooling fan
service check and LVPS
service check. See
“Cooling fan service
check” on page 94
and
“LVPS service
check” on page 89.
Replace the fuser. See
“Fuser removal” on
page 238.
126 errors
126 error messages
Error code Description Action
126.01 Line frequency outside operating range of device. Go to
“LVPS service check” on page 89.
126.02 No line frequency detected.
4514
Diagnostic information
88
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