Ccd Main Regist - Konica Minolta bizhub c20 Service Manual

Field Service Ver. 1.0 Sep. 2008
14.4.3

CCD MAIN REGIST

• To adjust for variations in the accuracy of IR parts and their mounting accuracy by vary-
Function
ing the scanning start position in the main scanning direction.
• When the original glass is replaced.
• When the Scanner unit has been replaced
Use
NOTE
• After the [CCD MAIN ZOOM] adjustments have been performed
• Adjust the amount that widths A and B in the copy of the test pattern1 so that the follow-
ing specification is met.
• 0 ± 2.0 mm
Adjustment
Specifica-
tion
• The default setting is 0.
Adjustment
• -5.0 (-5.0 mm) ~ "0.0 (0.0 mm)" ~ +5.0 (+5.0 mm)
Range
• Step: 0.5 mm
1. Print the test pattern1.
See P.216
2. Enter the [ADJUST] menu in the service mode.
3. Select [CCD MAIN REGIST] of [ADJUST] and press the Select key.
4. Place the test pattern1 on the Original Glass and make a test copy.
NOTE
• The test pattern1 should be positioned vertically.
Setting/
• Use A4 or Letter paper loaded into tray1 to make the test copy.
Procedure
5. Check the amount that widths A and B in the copy of the test pattern are shifted.
If the shift is out of specification, adjust it according to the following procedure.
6. Press the Select key.
7. Using the
8. Place the test pattern1 on the Original Glass. Then, make a test copy again and check
it.
Adjustment • If the width of A is less than the width of B..... Increase the setting.
Instructions • If the width of B is less than the width of A..... Decrease the setting.
/ key, change the setting value and then press the Select key.
14. SERVICE MODE
B
A
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