Oki MC561, Maintenance Manual

Page: 254 / 276

44473001TH Rev.1
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Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURES
4. Scanner inspection and adjustment
Perform inspection of the scanner based on the NG judgment result using the "Field
Checker" tool.
Copy image quality specification
NG item
Scanner maintenance tool implementation
contents
FB ADF/RADF
4.9.1 : Scaling STEP1 No.3, 4 STEP2, 3 No.3, 4
4.9.2 : Skew STEP1 No.5, 6 STEP2, 3 No.5, 6
4.9.3 : Scan position STEP1 No.1, 2 STEP2, 3 No.1, 2
4.9.4 : CTF (MTF) STEP4 No.3
STEP6 No.3
STEP5 No.4
STEP7 No.4
4.9.5 : Greyscale output balance STEP4 No.1
STEP6 No.1
STEP5 No.2
STEP7 No.2
4.9.6 : Color balance STEP5 No.3 STEP7 No.3
4.9.7 : Density output deviation STEP4 No.2
STEP6 No.2
STEP5 No.2
STEP7 No.2
4.9.8 : Consistency on a page STEP4 No.4
STEP6 No.4
STEP5 No.5
STEP7 No.5
4.9.10 : Consistency of adjacent
color output
STEP4 No.5
STEP6 No.5
STEP5 No.6
STEP7 No.6
4.9.11 : Jitta STEP1 No.7 STEP2 No.7
Perform the inspection in each step.
(For the method of using the tool, refer to the "Image Inspection System Operation
Manual" (This is the operation manual attached to the Field Checker.))
If NG occurs on the tool during the inspection of the scanner, perform adjustment in
accordance with the following table.
Scanner Inspection
Step
Scanner Adjustment
STEP 1, 2, 3 Perform the Automatic Alignment in accordance with the
"Image Inspection System Operation Manual".
After adjustment is completed, perform the inspection steps
once again.
STEP 4, 5, 6, 7 Perform the Automatic output adjustment in accordance with
the "Image Inspection System Operation Manual".
After adjustment is completed, perform the inspection steps
once again.
After the Scanner Inspection and Adjustment, perform item 4 "Copy Image Inspection".
When result of the inspection is OK, this is the end of the inspection.
If the result is NG, it is judged that the scanner is defective. Replace the scanner unit.