Left/Right Edge Read Start Position Adjustment - Canon SmartBase 1270D Service Manual

1.2.4.3 Left/Right Edge Read Start Position Adjustment

Adjust the left/right edge read start position for book mode as follows:
1) If LTR paper is available, prepare a test sheet using LTR paper. (See 1.2.2 of Chapter 7.)
If no LTR paper is available, cut a larger sheet of paper so that its width is 216 mm;
then, prepare a test sheet as instructed in 1.2.2, making sure that the width is 216 mm; as
for its length, make sure that it fits the copyboard glass.
2) Make a copy of the sheet in book mode on paper of the same size to a reduction ratio of
80%.
3) Measure the length of b-a of the copy, and check to make sure that it is as indicated. (It
must be 0 ± 0.4 mm.)
(feeding direction)
4) Press the Additional Functions key and the # key to start service mode.
5) Press the Left/Right Arrow key so that '#6 SCANNER' is indicated.
6) Press the OK key.
7) Press the Left/Right Arrow key so that '7: CCD' is indicated.
8) Press the OK key.
9) Press the Left/Right Arrow key so that the 2nd row of the LCD indicates '021:'.
10) Enter an appropriate correction value on the keypad so that the length of b-a measured
in step 2) is as indicated. (An increase by '1' will decrease the length of b by about 0.03
mm while increasing the length of a by about 0.03 mm.)
11) Press the OK key.
12) Press the Stop key (to end SCANNER).
13) Make a copy of the test sheet in book mode on paper of the same size; then, check to
make sure that the length of L on the copy is as indicated.
14) End the work if the length of L is as indicated; otherwise, start over with step 2).
COPYRIGHT © 2002 CANON INC.
a
Copy of the test sheet
b
F07-102-04
2000 2000 2000 2000 CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
CHAPTER 7 TROUBLESHOOTING
7-7