Muratec MFX-C4000 Field Engineering Manual page 193

Problem Description
Toner Supply Error
Early Toner Empty
Toner Contamination
on Printed Image
Toner Contamination
on the Lead Edge of
the paper
Toner Contamination
on the Back of the
Paper
Dragged Image
Service Manual
Alignment & Troubleshooting
Cause Description
1. Toner Supply
Path is blocked by
Developer
1. High Image Density
1. Toner Contamination
of the Internal
Mechanism
1. Toner Contamination
on Paper Path
1. Toner Contamination
on Paper Path
2. Toner Contamination
on T2 Roller
1. Motor Error of the
Developing Unit
Action to Resolve
[1. Toner Supply Path is blocked by Developer]
1.1) Check the Toner Supply Motor [EDC #111-0000~0003].
1.2) Check the toner supply shutter operates properly.
1.3) Check that the toner supply entrance is closed or not.
1.4) Check that the toner supply pipe is blocked or not.
1.5) Check the T/C sensor.
After operate Main , Black OPC/DEVE, Color OPC,
Color Deve BLDC Motor [EDC #100-0000], [EDC #100-
0002],[EDC #100-0004],[EDC #100-0006], Check the T/C
sensor value [EDC #111-0004~7].
1.6) If the T/C sensor value [EDC #111-0004~7] is constant
or abnormal, check the T/C Sensor or TC Sensor ADC of
Engine board.
[1. High Image Density]
1.1) Check the environmental sensor.
1.2) If the density of printed image is high, check the T/C control
value [TM #111-0006~0017]. If it is abnormal, change the
value.
1.3) Operate the CTD density control[EDC #117-0000] and
check the density is decreased or not.
1.4) If the density is not decreased, operate the CTD density
Patch [EDC #117-0001]. Check the density, decrease the
density on Custom Color Setting
1.5) If you could not adjust the density on Custom Color,
operate [TM #111-0006~0017] to adjust the T/C.
[1. Toner Contamination of the Internal Mechanism]
1.1) Clean the toner contamination.
[1. Toner Contamination on Paper Path]
1.1) Clean the toner contamination on paper path.
[1. Toner Contamination on Paper Path]
1.1) Clean the toner contamination on paper path.
[2. Toner Contamination on T2 Roller]
2.1) Clean the T2 unit.
[1. Motor Error of the Developing Unit]
1.1) In case that OPC isn't rotating.
1.2) Check and confirm Main drive motor, Black OPC/DEVE,
Color OPC, Color Deve BLDC Motor [EDC #100-0000],
[EDC #100-0002], [EDC #100-0004], [EDC #100-0006].
1.3) Check the OPC coupling in developing unit was installed.
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