Lexmark MX610 Service Manual page 120

Error code Description
121.30 Fuser failed to reach printing temperature by the time
a page reached the fuser.
121.31 Fuser is too hot. Global temperature check.
121.32 Open fuser main thermistor.
121.33 Open fuser edge thermistor.
121.34 Open fuser backup roll thermistor.
121.35 Attempting to POR after receiving a 121.34.
121.36 Fuser did not heat to allow compression jog.
121.37 Fuser heated faster than allowed during line voltage
detection.
Fuser service check
Action
Step 1
a
Restore the engine settings to their defaults:
Diagnostics Menu > Printer Setup > Defaults
b
Restore the EP setup settings to their defaults:
Diagnostics Menu > EP Setup > Defaults
Does the problem remain?
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?
Step 3
Are the cables JTHERM1, JEXIT and PCN5 free of damage?
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?
Action
Go to "Fuser service check" on page
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Perform an LVPS
service check. See
"LVPS service check"
on page
Diagnostic information
120
120.
No
The problem is solved.
Reseat the cables.
Replace the fuser. See
"Fuser removal" on
page 320.
Replace the fuser. See
"Fuser removal" on
page 320.
121.
7016