Error code Description Action
121.30 Fuser failed to reach printing temperature by the
time a page reached the fuser.
Go to
“Fuser service check” on page 136.
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 Yes No
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?
Go to step 2. The problem is
solved.
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 346.
7016
Diagnostic information
136
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