Olivetti d-Color MF4003 Service Manual page 529

d-Color MF4003/MF3303
Step Section
6 2nd transfer section
7 Fusing unit
8 Fusing unit
Scanner troubleshooting procedure
Step Section
1 Original
2 When original glass is
being used
3 When DF is being used:
1st side
4 When DF is being used:
2nd side
Main body side_original glass
5 DF side_ Original pad
6 Original glass
7 End face of original is
reproduced as a line
8 Line occurring due to
faulty shading
9 Parts along scanning path Light guide or lens array is dirty.
Main body side_DF original reading section
10 Main body side_reading
section
11 Service Mode -> Read
Pos Adj
12 Parts along scanning path Light guide or lens array is dirty.
DF side_original reading section
13 CIS glass cleaning
14 CIS reading section
15 When DF is being used:
2nd side
16.3.3 White line 2, White band 2, Color line 2, Color band 2
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
[1] [2]
[1] White line
[3] Color line
Initial troubleshooting procedure
Step Section
1 Paper Setting
Y119930-3
Check item
There is a positive contact between the application
terminals of the 2nd transfer and the connection
terminals (T2) and ground terminal of the high voltage
unit.
There is dirty or foreign matter on paper path of fusing
unit.
Scratches on roller, pad, and belt in fusing unit.
Check item
Original is damaged or dirty.
A fault occurs in the image read through the original
glass.
A fault occurs in the image read from the 1st side while
DF is being used.
A fault occurs in the image read from the 2nd side while
DF is being used.
Original pad of DF is dirty.
Original glass is dirty.
Select [Service Mode] -> [Machine] -> [Scan Area] ->
[Scanner Image Side Edge] and make the necessary
adjustment, and the image trouble is eliminated.
Select [Service Mode] -> [Machine] -> [Scan Area] ->
[Image Position: Leading Edge] and make the necessary
adjustment, and the image trouble is eliminated.
Original reading glass of main body is dirty.
Select [Service Mode] -> [ADF] -> [Read Pos Adj] and
the image trouble is eliminated.
CIS glass is dirty.
CIS reading section is dirty.
Shading correction surface of DF is dirty.
[3] [4]
Check item
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
L-131
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
NO
YES
YES
NO
Result
YES
YES
YES
YES
YES
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
YES
YES
NO
[2] White band
[4] Color band
Result
YES
Action
Clean or correct the terminal.
Clean. (Disassembling the fusing
unit is prohibited.)
Replace the fusing unit.
• Replace the high voltage unit.
• Replace the base board.
Action
Change the original.
Go to step 5.
Go to step 10.
Go to step 13.
Clean.
Clean.
Go to the next step.
Go to the next step.
Clean.
Replace the CIS module.
Clean.
Go to the next step.
Clean.
Replace the CIS module.
Clean.
Clean.
Clean.
Replace the DF CIS module assy.
Action
Make the paper setting again on
the machine.
Service Manual