3-36 magicolor 330 - Base Engine Service Manual
Primary FIPS: Error Messages
3.33 - Error Message: Call for Service Fuser Temp Low
There is a problem with the temperature of the Fuser.
Logic control on the MCU PWB detected that the Fuser temperature did not reach Set Standby temperature of 148°C
within 6 minutes after you switched on main printer power.
Step Actions and Questions Yes No
SUSPECT COMPONENTS
The following components are associated with this specific prob-
lem. One or more of these components may have failed partially or
completely. If you cannot isolate the problem using this FIP,
replace each component listed below, one at a time, until the prob-
lem disappears.
• Main Fuser Assembly (RRP 9.81)
• Wiring and connectors linking the components
• Interlock switches and circuits
1FUSER INSPECTION
1. Slide the Fuser Assembl y out of the printer.
2. Place your hand near, but not on, the Fuser Rolls.
Do you feel any heat coming from the Fuser?
Go to step 2 Go to step 3.
2Replace the Temperature Sensor Assembly (RRP 9.88)
Does the error message still appear?
Go to step 5 Problem
solved
3FUSER FUSE AND THERMOSTAT CHECK
1. Slide the Fuser Assembl y out of the printer.
2. Remove the two screws securing the Upper Fuser
Assembly to the Main Fuser Assembly.
3. Check for continuity across the Fuser Fuse.
4. Check for continuity across the Fuser Thermostat.
Is there continuity across both the Fuser Fuse and across the
Fuser Thermostat?
Go to step 4 Replace the
Upper Fuser
Assembly
(RRP 9.87)
4Replace the Pressure Roll Heat Rod (RRP 9.85) and the Heat Roll
Heat Rod (RRP 9.86).
Does the error message still appear?
Got to step 5 Problem
solved
5Replace the MCU PWB (RRP 9.123)
Does the error message still appear?
Go to step 6 Problem
Solved
6Replace the LVPS Assembly (RRP 9.119)
Does the error message still appear?
Go to suspect
components
Problem
solved