Muratec MFX-2500 Field Engineering Manual page 257

(12) Rough Image
Section Step
1 Is the Image Transfer Roller dirty?
Printer
Is the image transfer current
engine 2
terminal intact?
Is the Scanner drive transmission
1
mechanism in good condition?
Do the connections from CCD Þ
Scanner
PCB AFE Þ PCB Scanner Þ
2
PCB Main Þ PCB Connect Þ
PWB-A remain intact?
(13) Periodically Uneven Image
Section Step
Is the Developing Unit drive gear
1 cracked or dirty with foreign
matter?
Is the PC Drum drive gear
2 cracked or dirty with foreign
matter?
Is the Synchronizing Roller drive
Printer
engine 3 gear cracked or dirty with foreign
matter?
Is the Fusing Unit drive gear
4 cracked or dirty with foreign
matter?
5 Is the PH Assy secured properly?
Is the FBS Motor drive gear
1 cracked or dirty with foreign
matter?
Is the Scanner Motor secured
2
properly?
Are the FBS belts attached
3
loose?
Is the Mirror carriage A secured
4
properly?
Scanner
Are the Mirror carriage drive belts
5
wound properly?
Are the Scanner rails damaged or
6
dirty with foreign matter?
Do the connections from CCD Þ
PCB AFE Þ PCB Scanner Þ
7
PCB Main Þ PCB Connect Þ
PWB-A remain intact?
Check Item
Check Item
4-43
Result Action
YES Clean or change.
Change HV1, I/C, PH Unit, or
YES
PWB-A, in that order.
Check and change as
NO
necessary.
Check and change as
NO
necessary.
Change PCB AFE, PCB
Scanner, PCB Main, PCB
YES
Connect or PWB-A, in that
order.
NO Reconnect.
Result Action
YES Clean or change.
YES Clean or change.
YES Clean or change.
YES Clean or change.
YES Change the I/C or PWB-A.
NO Secure properly.
YES Clean or change.
NO Secure properly.
YES Adjust the belt tension.
NO Secure properly.
NO Wind the belts properly.
YES Clean or change.
Change PCB AFE, PCB
Scanner, PCB Main, PCB
YES
Connect or PWB-A, in that
order.
NO Reconnect.