Canon FY8-13EX-000, NP6218 service manual 10-7

CHAPTER 10 TROUBLESHOOTING

3.Adjusting the Image Trailing Edge Non-Image Width ([3], No. 309; blank shutter timing)

Trailing Edge Non-Image Width

2.5±

1.5mm

Figure 10-203

Activate [3] in service mode, and select ‘No. 309’ (leading edge non-image width adjustment); make adjustments so that the image trailing edge non-image width is as indicated in Figure 10-203 when the Test Sheet is copied in Direct.

The copier varies the image trailing edge non-image width by varying the timing at which the blank shutter is opened.

Making Adjustments

1)Activate [3] in service mode, and select ‘No. 309’ using the keypad.

•The copy count indicator flashes ‘No. 309’.

2)Press the Start key.

3)Change the value using the keypad.

•The value flashes.

•If the value is negative, ‘%’ turns on. To enter a negative value, press the % key, then enter the value using the keypad.

4)Press the AE key.

•The value flashes as soon as it is entered.

•Press the Start key to start copying operation.

5)To change a value continuously, repeat steps 1) through 2).

6)Press the Clear key to return to selecting items.

The relationship between the setting and the image position is as follows:

•For each ‘1’ in the setting, the position shifts about 0.27 mm.

•‘+’ decreases the trailing edge non-image width.

COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON) 10-7