Ccd Sub Regist - Konica Minolta magicolor 4690MF Service Manual

Field Service Ver. 1.0 May 2008
13.4.4

CCD SUB REGIST

• To adjust for variations in the accuracy of IR parts and their mounting accuracy by
Function
varying the scanning start position in the sub-scanning direction.
• When the original glass is replaced.
• When the Scanner unit has been replaced
Use
NOTE
• After the [CCD SUB ZOOM] adjustments have been performed
• Adjust the width of C in the copy of the test pattern1 so that the following specification
is met.
• 20 ± 2.5 mm
Adjustment
Specification
• The default setting is 0.
Adjustment
• -5.0 (-5.0 mm) ~ "0 (0 mm)" ~ +5.0 (+5.0 mm)
Range
• Step: 0.5 mm
1. Print the test pattern1.
See P.174
2. Enter the [ADJUST] menu in the service mode.
3. Select [CCD SUB 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 that the width of C in the copy of the test pattern are shifted.
If the width of C 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.
• If the width of C in the test pattern is longer than the specified width
Adjustment ..... Increase the setting.
Instructions • If the width of C in the test pattern is shorter than the specified width
..... Decrease the setting.
C
/ key, change the setting value and then press the Select key.
13. SERVICE MODE
4139F3C547DA
161