Stream Reading Speed Adjustment; Adjustment At Time Of Parts Replacement; Outline; Replacing The Eeprom - Canon DADF-Q1 Service Manual

A single press on each switch will shift the original stop position by 0.5
mm.
When the correct position is attained (after switch operation), press the
push switch SW2.
- The original will be delivered, and the new setting will be stored in
memory.
J16 J15
J1
J2
J4
CB1
SW1
J5
DSP1
SW4SW3SW2
J3
J6
Switch Direction of shift
SW3 Right
SW4 Left
Original
SW4 SW3
Holding down the push switch will not cause more than a single shift.
EX
If the copy paper stops 12 mm from the copyboard glass,
Close the DADF slowly leaving the copy paper on the copyboard glass.
To shift the stop position 1 mm to the left, the following is true:
1 0.5 (adjustment interval) = 2
Hence, press the push switch SW4 twice, and press the push switch SW2.
- The copy paper will be delivered, and new setting will be stored in memory.

4.3.1.7 Stream Reading Speed Adjustment

1) Place the test chart in the original pickup tray, and make a copy at a 100%
reproduction ratio.
2) Put the copy and chart together, and compare the length of the image
in feed direction, making sure that dimension a is as indicated. If not, go
to the next step.
standard: a </= 1 mm
J14
J13
J12
IC8
J7 J8 J9 J10 J11
F-4-105
T-4-8
F-4-106
3) Make the following selections: FEEDER>ADJUST>LA-SPEED; then,
change the setting to make adjustments.
-To make the image on the copy longer, decrease the setting (so that the
stream reading speed will be decreased).
-To make the image on the copy shorter, increase the setting (so that the
stream reading speed will be increased).
[ range -30 to 30 : -3 to + 3 % ]

4.3.2 Adjustment at Time of Parts Replacement

4.3.2.1 Outline

Major parts
- ADF controller PCB
-EEPROM (memory back-up)
-Reversal sensor (S1)
-Pre-registration roller paper sensor (S2)
-Post-registration roller paper sensor (S3)
-Separation paper sensor (S4)
-Skew paper sensor (S5)
-Original sensor (S6)
-Original trailing edge sensor (S7)
0013-3708
-Manual feed registration roller paper sensor (S9)
-Delivery motor (M5)

4.3.2.2 Replacing the EEPROM

Perform the following when replacing the ADF controller PCB.
1) Remove the EEPROM (IC8) from the faulty ADF controller PCB.
Chapter 4
<If Shorter on Chart>
a
<If Longer on Chart>
a
F-4-107
T-4-9
Work
1) Replacement of the
EEPROM
2) Adjust the sensors and the
delivery motor
0011-3496
0011-3499
4-21