Panasonic Workio DP-C401 Service Handbook - page 231
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Chapter 3 Troubleshooting
3. 4. 4. 24 DC945 IIT Calibration (Color Image Control)
Description
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•
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when the lens unit is replaced, and calculates and displays the Regi Skew amount based on the
difference with the target value.
Function details
Reference
Refer to ADJ1.1.7 IIT Calibration (DC945) in Chapter 2 for details on DC945 IIT
Calibration.
Procedure
1. Select the "Color Image Ctrl" tab on the Service Mode screen.
2. Select [
DC945
] on the IIT screen.
3. The IIT Calibration screen is displayed.
The following measurement items can be selected:
• White Reference Adjustment
• CCD Calibration
• Optical Axis Correction
1. Select and execute the White Reference.
2. Follow the instructions on the screen to execute. (Load 10 sheets or more on the Platen.)
3. The Setup Value (3) is displayed on the White Reference Setup Value screen.
1. Select and execute the CCD Calibration.
2. Follow the instructions shown in the screen. Place the Chart on the Platen Glass and select
[OK].
3. The data obtained is displayed in the CCD Calibration Setup Value column.
4. Select [Close] to return to the IIT screen.
1. Select the Optical Axis Correction from the measurement items.
2. Open the Platen, and click [Execute] without placing anything on the glass.
3. Click [OK] on the confirmation message.
After execution, the following data will appear. (Check while lowering the scroll bar in the
Execution Result Value area.)
• Judgement: OK/NG
• Front NUT Correction Angle: (Displayed in numbers)
• Rear NUT Correction Angle: (Displayed in numbers)
4. At NG, perform the required adjustments. (Refer to Chapter 2 ADJ1.1.7.)
The software to be adjusted was produced for P paper. For details, refer to ADJ1.1.7
DC945 IIT Calibration.
The M/C carries out the following operations:
(1) Carries out shading to stabilize the IIT state.
(2) Obtains the shading data.
(3) Carries out sampling of white paper data, then calculate and set up the White
Reference Correction Coefficient. (NVM715-080~082 are set.)
(4) Carries out shading to reflect the result of the White Reference Adjustment.