Cis Main Regist - Konica Minolta bizhub C25 Service Manual

13. SERVICE MODE
13.4.3

CIS MAIN REGIST

A. Use
• To adjust for variations in the accuracy of IR parts and their mounting accuracy by vary-
ing the scanning start position in the main scanning direction.
• When the original glass is replaced.
• When the Scanner unit has been replaced.
NOTE
• After the [CIS 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
B. Procedure
• The default setting is 0.
-1.5 (-1.5 mm) ~ "0.0 (0.0 mm)" ~ +1.5 (+1.5 mm); Step: 0.5 mm
1. Print the test pattern1.
See P.155
2. Enter the [ADJUST] menu in the service mode.
3. Select [CIS 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.
• Use A4 or Letter paper loaded into tray1 to make the test copy.
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 / key, change the setting value and then press the Select key
8. Place the test pattern1 on the original glass. Then, make a test copy again and check it.
<Adjustment instructions>
If the width of A is less than the width of B..... Increase the setting.
If the width of B is less than the width of A..... Decrease the setting.
138
Field Service Ver. 1.1 May 2011
B
A
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