Konica Minolta bizhub C658 Service Manual page 994

bizhub C658/C558/C458/C368/C308/C258
Target
Setting range
1. Place the chart in the document feed tray (Set the chart with its blank side facing upward).
• DF reading chart (for 1-sided): with the blank side facing up.
• DF reading chart (for Duplex): with the first side facing up.
2. Make a full size copy of the chart.
3. Check that the difference in the widths of A between the chart and the copy sample falls within the target.
4. Call the Service Mode to the screen.
5. Touch [ADF] -> [Original Stop Position].
6. Touch [Main Scanning (Back)].
7. Enter the value from the 10-key pad. (Press the [+/-] key to change the +/- code.)
• If the difference in the widths of A is greater than the target, enter the [+] value.
• If the difference in the widths of A is smaller than the target, enter the [-] value.
8. Touch [Test Copy].
9. Select the tray loading paper for the test copy.
10. Touch [2].
11. Touch [2-sided -> 2-sided].
12. Place the chart in the document feeding tray.
13. Press the start key, and check the difference in the width A between the chart and the discharged copy sample.
14. Touch [END] twice.
15. Touch [Exit] on the Service Mode screen.
16. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON.
5.21.2 Registration Loop Adj.
(1) Use
• To adjust the length of the loop to be formed in paper before the registration rollers.
• When an original misfeed or skew occurs.
(2) Procedure
1. Call the Service Mode to the screen.
2. Touch [ADF] -> [Registration Loop Adj].
3. Select either [1-Side] or [Second Side] for the adjustment.
4. Touch clear and change the setting value using the 10-key pad. (Press the [+/-] key to change the +/- code.)
The amount of loop increases by the amount of positive (+) value and decreases by the amount of negative (-) value.
5. Touch [END].
6. Touch [Exit] on the Service Mode screen.
7. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON.
(3) Default setting
• 0
(4) Setting range
• -5 mm to +5 mm (in 1 mm increments)
5.21.3 Auto Stop Position Adjustment
(1) Use
• To automatically adjust the read position for the Sub Scanning Direction.
• To check skew feed.
• When DF has been replaced.
• When CIS module has been replaced.
NOTE
▪ Before performing this adjustment, the "FD-Mag. Adj. (F)" adjustment and "FD-Mag. Adj. (B)" adjustment needs to be complete.
I.5.21.8 Feed Zoom
I.5.21.12 FD-Mag. Adj. (B)
(2) Procedure
(a) Sub Scanning Direction 1-Side
1. Call the Service Mode to the screen.
2. Touch [ADF] -> [Auto Stop Position Adjustment].
3. Touch [Sub Scanning Direction 1-Side].
4. Place the chart in the document feed tray.
• DF reading chart (for 1-sided): with the side having an arrow facing up.
• DF reading chart (for Duplex): with the first side facing up.
5. Press the Start key.
6. Make sure that result is OK. Then, touch [SET].
7. Touch [END].
8. Touch [Exit] on the Service Mode screen.
9. Turn OFF the main power switch, wait for 10 sec., then turn the switch ON.
NOTE
If the result is [Unable]:
• Check and correct the skew of the document.
• Manually correct the value of [Original Stop Position].
I.5.21.1 Original Stop Position
0 ± 2.0 mm
-4.4 mm to +4.4 mm (1 step: 0.1 mm)
I-224
I ADJUSTMENT/SETTING > 5. SERVICE MODE