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AL-1250
2. Circuit descriptions
A. Main PWB (MCU)
(1) CPU signal table
The additional signal is as follows:
Pin No.
Signal name
109
The signals of function change are as follows:
Pin No.
Signal name
119
MRMT3
120
MRMT2
121
MRMT1
122
MRMT0
(2) ASIC signal table
The additional signal is as follows:
Pin No.
Signal name
201
202
203
208
209
SMSEL
227
CPFS2
(3) Input signal table
The additional signals are as follows:
Signal name
SPF
SDSW
2nd
In/Out
SIN3
In/Out
Motor output
Motor output
Motor output
Motor output
In/Out
SGS
Output
SRRC
Output
SPUS
Output
SPFS
Output
Output
Output
SPID
SPF paper entry detection signal
SPPD
SPF paper transport detection signal
SDOD
SPF open/close detection signal
SPF cover open/close detection signal
CED2
2nd cassette section cassette presence detection
PPD3
2nd cassette section paper transport detection
Input
Mirror motor/SPF motor control signal
Mirror motor/SPF motor control signal
Mirror motor/SPF motor control signal
Mirror motor/SPF motor control signal
Connection
TR array IC
TR array IC
TR array IC
TR array IC
TR array IC
TR array IC
Descriptions
9-3
During operation
Sensor input 3
During operation
Descriptions
SPF gate solenoid
control signal. "H": Gate
solenoid ON
SPF resist roller clutch
control signal. "H":
Clutch ON
SPF pickup solenoid
control signal. "H":
Solenoid ON
SPF paper feed solenoid
control signal. "H":
Solenoid ON
SPF/mirror motor relay
switch signal. "L": Mirror
motor, "H": SPF motor
2nd cassette paper feed
solenoid control signal.
"H": Solenoid ON
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