Olivetti d-Color MF4003 Service Manual page 551

d-Color MF4003/MF3303
16.3.23 ACS malfunction
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
[1] [2]
[1] Color original section
Troubleshooting procedure
Procedure Section
1 Original Type
2 Original direction
3 Utility -> Auto Color Level
Adjustment
16.3.24 Abnormal image
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
[1] Data on the previous page
Troubleshooting procedure
Step Section
1 When original glass is
being used
When DF is being used:
1st side
2 When original glass is
being used
When DF is being used:
1st side
3 When DF is being used:
2nd side
4 When DF is being used:
2nd side
5 Service Mode -> Self-
diagnostic
Y119930-3
Check item
Select [Copy] -> [Original Type] and change the setting,
and the image trouble is eliminated.
Change the direction in which the original is placed. This
eliminates the trouble.
Select [Utility] -> [Utility] -> [System Settings] -> [Auto
Color Level Adjustment] and the image trouble is
eliminated.
[1] [2]
Check item
None of the terminal pins of the connection cable
between the CIS module and the base board (CN6) is
bent and a positive connection is made.
Replace the connection cable between the CIS module
and the base board. This eliminates the trouble.
Faulty connector connection the high DF CIS module
and base board (CN5).
Replace the flat cable between the DF CIS module and
the base board. This eliminates the trouble.
Select [Service Mode] -> [State Confirmation] -> [Self-
diag.(Full)] and perform the function. Then, "NG"
appears.
L-153
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
[2] Black and white original section
Result
YES
YES
YES
NO
[2] Data on the next page
Result
NO
YES
NO
YES
YES
YES
NO
Action
Correct the setting.
Change the original direction.
Readjust.
• Change the original direction.
• Make the setting according to
the type of original. (If the
original contains a colored
area at its corner, colored
area detection NG may
result.)
Action
Reconnect the connector.
Replace the connection cable.
• Replace the CIS module.
• Replace the base board.
Reconnect the connector.
Replace the flat cable.
Take relevant action
corresponding to the check item in
which "NG" has appeared.
• Replace the DF CIS module
assy.
• Replace the base board.
Service Manual