Canon DADF-M1 Service Manual - page 52
Chapter 2
2-30
F-2-39
The CPU (IC9) on the ADF driver PCB receives data (command) from the host machine on printing mode (magnification, operation mode, timing); in response,
it generates drive pulses to drive the feed motor (M2). The feed motor (M2) is a stepping motor, and its direction and speed of rotation are changed by changing
the order of drive pulses (A, A*, B, B*).
2.7 Detecting Jams
2.7.1 JAM
0004-5590
The machine checks for an original jam using the sensors shown in the figure. The timing at which a check is made is programmed in the ROM on the reader con-
troller PCB, and the presence/absence of a jam is identified in terms of whether there is paper over a particular sensor.
when it detects a jam, it communicates the fact to its host machine using a code, which may be checked in the host machine's service mode.
-Service Mode Screen of the Host Machine
F-2-40
F-2-41
2.8 Power Supply
2.8.1 Power Supply
0002-9917
The following is a diagram of the power supply system of the machine.
REF2
IC4
Motor
Driver
+24V
M2
J8
MODE
CLK
RESET
3
4
1
5
6
2
CUT
IC9
CPU
ADF driver PCB
REF1
+
5
V
A*
B*
B
A
REF
Display
Adjust
Function Option
Test
Counter
I/O
01
02
03
04
05
06
07
08
1031
1030
1030
1030
1029
1029
- - - -
- - - -
1653
1921
1748
1152
1810
1755
- - - -
- - - -
1653
1923
1748
1152
1813
1756
- - - -
- - - -
0001
0A11
0042
0005
010D
0A08
- - - -
- - - -
9399
0
2515
8668
8096
0
- - - -
- - - -
A4
- - - - - - - -
A4
A4
A4
- - - - - - - -
- - - - - - - -
- - - - - - - -
1
0
1
1
0
0
-
-
1
0
2
1
1
0
-
-
No.
DATE
TIME1 TIME2
L
P
CODE CNTR
SIZE
PI8
PI9
PI6
PI2
PI3
PI4
PI5
PI1
PI7