Ccd Main Regist - Konica Minolta magicolor 2490MF Service Manual

Field Service Ver. 1.0 Jul. 2006
11.4.5

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 [PRN MAIN REGIST] and [PRN SUB REGIST] and [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
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.130
2. Enter the [2. ADJUST] menu in the service mode.
3. Select [CCD MAIN REGIST] of [2. ADJUST] and press the Menu 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 Menu 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 Menu Select key.
11. SERVICE MODE
B
A
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