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4040
Option Controller Interface Connector
Pin
Signal
A1
+5V
A2
RESET
A3
/PRINT
A4
/SPCHG
A5
/PDLV
A6
/undeter-
mined 1
A7
N.C.
A8
/CKEN
A9
/TX
A10
GND
B1
+5V
B2
N.C.
B3
/VSYNC
B4
/PFED
B5
RETRUN-
BACK GND
Signal Name
Reset Signal (unused)
Print Signal (unused)
Speed Change Signal (unused)
Paper Delivery Signal
For expansion
Communication Ready Signal
Send Data Line
Vertical Synchronized Request Signal
Paper Feed Signal
Connection confirmation
Locations 5-53
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