Muratec MFX-C4000 Field Engineering Manual page 194

Problem Description
Broken Lines on
Image
Insufficient Toner
Fixing on Printed
Image
No Image Output at
Printing
No Image Output at
Copy
Inaccurate Color
Registration
Service Manual
Alignment & Troubleshooting
Cause Description
1. Lineburst on Fuser
Unit
1. Low Fusing
Temperature
2. High Toner Density
1. Fail to Open LSU
Cover
2. No High Voltage
Output from HVPS
1. Fail to Obtain Scan
Data
1. Failure in Auto Color
Registration Process
2. Inaccuracies in
Imaging Process
Action to Resolve
[1. Lineburst on Fuser Unit]
1.1) Check the Fuser unit is working out properly.
1.2) Check the T/C contol value [TM #111-0006~0017]. If there
is any wrong value, change the value..
1.3) Check the CTD density [EDC #117-0000].
1.4) If the density is not decreased, operate the CTD density
Patch[EDC #117-0001]. And check the density, decrease
the density level on Custiom Color setting.
1.5) If you could not adjust the density on Custom Color, do [TM
#111-0006~0017] to adjust the T/C.
[1. Low Fusing Temperature]
[2. High Toner Density]
2.1) Check the Fuser unit is working out properly.
2.2) Check the T/C contol value [TM #111-0006~0017]. If there
is any wrong value, change the value..
2.3) Check the CTD density [EDC #117-0000].
2.4) If the density is not decreased, operate the CTD density
Patch[EDC #117-0001]. And check the density, decrease
the density level on Custiom Color setting.
2.5) If you could not adjust the density on Custom Color,
operate [TM #111-0006~0017] to adjust the T/C.
[1. Fail to Open LSU Cover]
1.1) Consult the LSU error flow chart.
[2. No High Voltage Output from HVPS]
2.1) Check that abnormal developing condition was occured by
the defective environmental sensor.
2.2) Check the Charge Bias [TM #105-0010~0016] and Deve
Bias [TM #106-0000~0003]. If it is defective, change the
value.
2.3) Check the Charge Bias [EDC #105-0000~003]. If it is
defective, replace the HVPS
2.4) Check the Deve Bias [EDC #106-0000~003], replace the
HVPS.
2.5) If High voltage output and HVPS are normal, replace the
developing unit.
[1. Fail to Obtain Scan Data]
[1. Failure in Auto Color Registration Process]
1.1) Refer to Fuser open error
[2. Inaccuracies in Imaging Process]
2.1) Execute the manual ACR
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