Lexmark 4227 Service Manual - Page 116
Main Logic Board<-->Ribbon Motor, Main Logic Board<-->Serial Board, SBSET
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4227-300 Main Logic BoardRibbon Motor Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 CN19 RBD RBC RBB RBA RBCOM RBCOM Main Logic BoardAuto Gap Motor Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 CN20 GPD GPB GPC GPA GPCOM GPCOM Main Logic BoardSerial Board Main Logic Board CN22 Serial Board CN2 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 +TXD422 -RXD422 +RXD422 -TXD422 DTR Signal Gnd DSR -CTS RTS RXD TXD SBSET Pin 12 Pin 11 Pin 10 Pin 9 Pin 8 Pin 7 Pin 6 Pin 5 Pin 4 Pin 3 Pin 2 Pin 1 +TXD422 -RXD422 +RXD42 -TXD422 DTR Signal Gnd DSR -CTS RTS RXD TXD SBSET 6-12 Service Manual
6-12
Service Manual
4227-300
Main Logic Board<-->Ribbon Motor
Main Logic Board<-->Auto Gap Motor
Main Logic Board<-->Serial Board
CN19
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
RBD
RBC
RBB
RBA
RBCOM
RBCOM
CN20
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
GPD
GPB
GPC
GPA
GPCOM
GPCOM
Main Logic Board
CN22
Serial Board
CN2
Pin
1
Pin
2
Pin
3
Pin
4
Pin
5
Pin
6
Pin
7
Pin
8
Pin
9
Pin 10
Pin 11
Pin 12
+TXD422
-RXD422
+RXD422
-TXD422
DTR
Signal Gnd
DSR
-CTS
RTS
RXD
TXD
SBSET
Pin 12
Pin 11
Pin 10
Pin 9
Pin 8
Pin 7
Pin 6
Pin 5
Pin 4
Pin 3
Pin 2
Pin 1
+TXD422
-RXD422
+RXD42
-TXD422
DTR
Signal Gnd
DSR
-CTS
RTS
RXD
TXD
SBSET