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Indication bit
Item
P003
0
DDIS serial communication (TxD)
1
ADF serial communication (TxD)
2
DDIS serial communication (RxD)
3
ADF serial communication (RxD)
4
LED control
5
ADF serial communication (SCK)
6-7
not used
P004
0
original size detection 0
1
original size detection 1
2
original size detection 2
3
original size detection 3
4
DF connection detection
5
DDIS IF (SRTS)
6
scanner motor Vref output
7
not used
P005
0
PC connection IF (TxD)
1
PC connecting IF (RxD)
2
fan lock detection signal
3
DDIS IF (SCTS)
4-7
not used
P006
0
not used
1
PCB check terminal
2
DDIS IF (OPTI1)
3
DDIS IF (OPTO1)
4
ADF sensor interrupt input
5
copyboard open/closed sensor interrupt input 0 1: copyboard cover closed
6
HP sensor interrupt input
7
not used
P007
0
address bus 16
1
address bus 17
2
address bus 18
3-4
not used
5
ADF pickup motor lock interrupt input
6
ADF pickup motor lock interrupt input
7
ADF delivery reversal motor lock interrupt
input
P008
0
lamp ON signal
1
CCD drive ON signal
2
wait signal
3
L light signal
4
H light signal
5
read signal
6
ADF serial communication (LOAD)
7
CPU clock output
Remarks
-
-
-
-
1: ON
-
0: original present
0: original present
0: original present
0: original present
-
0: reception ready
-
-
-
-
0: enabled
0: reception ready
-
1: normal
0: active
0: active
0: active
1: HP
-
-
-
-
-
1: on
1: on
0: wait
0: active
0: active
0: active
0: enabled
-
Chapter 19
19-25
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