Checking The Sensor Output - Canon DADF-Q1 Service Manual

Chapter 4
Switch
SW3
SW4
*0.1% (image reproduction ratio).
3) Press the push switch SW3 or SW4 on the ADF controller PCB to adjust
the speed of reversal by referring to theable.
J16 J15
J1
J2
J4
CB1
SW1
J5
DSP1
SW4SW3SW2
J3
J6
DIS1
4-26
[2]
[1]
F-4-122
F-4-123
DSP1 Adjust
indicat ment Switc
ion value* h
A-E2 -30 SW3
A-E3 -29
A-E4 -28
A-E5 -27
A-E6 -26
A-E7 -25
A-E8 -24
A-E9 -23
A-EA -22
A-Eb -21
A-Ec -20
A-Ed -19
A-Ee -18
A-Ef -17
A-F0 -16
A-F1 -15
A-F2 -14
A-F3 -13
A-F4 -12
A-F5 -11
A-F6 -10 SW4
J14
J13
J12
IC8
J7 J8 J9 J10 J11
F-4-125
Sensor in question (notation)
Original sensor (S6)
(1)
2) Pres the push switch (SW2).
- DSP 1 displays the current volume by flushing.
DSP1
indicati
on Adjustment value*
A-F7 -9
A-F8 -8
A-F9 -7
A-FA -6
A-Fb -5
A-FC -4
A-Fd -3
A-FE -2
A-FF -1
A-00 0 (reference value)
A-01 1
A-02 2
A-03 3
A-04 4
A-05 5
A-06 6
A-07 7
A-08 8
A-09 9
A-0A 10
A-0b 11
SW3
SW4
4) At the end of the operation, press the push switch (SW2) on the ADF con-
troller.

4.3.3.5 Checking the Sensor Output

The DADF uses a 7-segment LED (DSP1) on its ADF controller PCB to al-
low a check on the presence/absence of paper or the state (open/closed) of
the upper cover of the following sensors:
Sensor in question (notation)
DSP1
Reversal sensor (S1)
(7)
J16 J15
J1
J2
J4
CB1
SW1
J5
IC8
DSP1
SW4SW3SW2
J3
J6 J7 J8 J9 J10
F-4-124
T-4-19
DSP1 Adjust
Switc indicati ment
h on value*
SW3 A-0C 12
A-CD 13
A-CE 14
A-CF 15
A-10 16
A-11 17
A-12 17
A-13 18
A-14 19
A-15 20
A-16 21
A-17 22
A-18 23
A-19 24
A-1A 25
A-1b 26
A-1C 27
A-1d 28
A-1E 29
A-1F 30
SW4 - -
T-4-20
Switch Change
Increase the speed of reversal.
Decrease the speed of reversal.
T-4-21
J14
J13
J12
J11
0011-3522