Muratec MFX-C4000, Field Engineering Manual

Page: 196 / 280

Alignment & Troubleshooting
Service Manual
4-90
Problem Description Cause Description Action to Resolve
Color OPC BLDC
Motor Error
1. High Torque Loaded
on OPC Unit
[1. High Torque Loaded on OPC Unit]
1.1) Check the torque OPC Unit
1.2) If the torque is very high. replace OPC Unit
[2. Motor Signal is abnormal]
1.1) Check the wire connection from motor to Engine PBA.
1.2) If the connection is wrong , correct it .
1.3) If the connection is right , replace motor and/or harness .
Fuser BLDC Motor
Error
1. High Torque Loaded
on Fuser Unit
[1. High Torque Loaded on Fuser Unit]
1.1) Check the torque Fuser Unit
1.2) If the torque is very high. replace Fuser Unit
[2. Motor Signal is abnormal]
1.1) Check the wire connection from motor to Engine PBA.
1.2) If the connection is wrong , correct it .
1.3) If the connection is right , replace motor and/or harness .
Fuser Open Error 1. Thermistor Open
2. Thermostat Open
3. T2 Transfer Mis-
Contact
4. Engine PBA Error
[1. Thermistor Open]
1.1) Check resistance of thermistors.
1.2) If the resistance value is infinite or much high (Mohm),
replace the thermistor or Fuser Unit.
[2. Thermostat Open]
2.1) Check resistance of thermostats.
2.2) If the resistance value is infinite or much high (Mohm),
replace the thermostat or Fuser Unit.
[3. T2 Transfer Mis-Contact]
3.1) Open the side cover and check high voltage contacts of T2
roller.
3.2) If there are any contaminations on the contact, make it
clean.
[4. Engine PBA Error]
4.1) If there is no problems in the above 3 checks, and the error
is continuously displayed, replace Engine PBA.
No Booting
1. Power Out
2. Fail to Initialize
Video PBA
[1. Power Out]
1.1) Check and confirm 5V output from SMPS.
1.2) Check power wire connections from SMPS to Engine PBA.
1.3) Check core voltages in Video/Engine PBA.
[2. Fail to Initialize Video PBA]
2.1) Check the connections of DIMM Memory, HDD, and GUI
interface harness.
2.2) Reboot the set.
2.3) If the set does not initialize, replace the Video PBA.