Lexmark 4227 Service Manual - Page 115
Main Logic Board<-->Operator Panel, Main Logic Board<-->Tractor PSet & Jam Sensors, Pin 10 LLATCH
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4227-300 Main Logic BoardOperator Panel Main Logic Board CN14 Pin 1 +5Vdc Pin 2 SLATCH Pin 3 +5Vdc Pin 4 TXD Pin 5 Signal Gnd Pin 6 RXD Pin 7 Signal Gnd Pin 8 SCLK Pin 9 Signal Gnd Pin 10 LLATCH Operator Panel Board CN3 Pin 1 +5 V dc Pin 2 SLATCH Pin 3 +5 V dc Pin 4 TXD Pin 5 Signal Gnd Pin 6 RXD Pin 7 Signal Gnd Pin 8 SCLK Pin 9 Signal Gnd Pin 10 LLATCH Main Logic BoardCarrier Motor Cable #2 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 CN15 +5Vdc EA Gnd EB Gnd CATHM Not Used Main Logic BoardTractor PSet & Jam Sensors Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 CN18 TRPSS TRPSG TRJMP TRJAM TRJMG DSET Locations and connectors 6-11
Locations and connectors
6-11
4227-300
Main Logic Board<-->Operator Panel
Main Logic Board<-->Carrier Motor Cable #2
Main Logic Board<-->Tractor PSet & Jam Sensors
Main Logic Board
CN14
Operator Panel Board
CN3
Pin
1 +5Vdc
Pin
2 SLATCH
Pin
3 +5Vdc
Pin
4 TXD
Pin
5 Signal Gnd
Pin
6 RXD
Pin
7 Signal Gnd
Pin
8 SCLK
Pin
9 Signal Gnd
Pin 10 LLATCH
Pin
1 +5 V dc
Pin
2 SLATCH
Pin
3 +5 V dc
Pin
4 TXD
Pin
5 Signal Gnd
Pin
6 RXD
Pin
7 Signal Gnd
Pin
8 SCLK
Pin
9 Signal Gnd
Pin 10 LLATCH
CN15
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
+5Vdc
EA
Gnd
EB
Gnd
CATHM
Not Used
CN18
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
TRPSS
TRPSG
TRJMP
TRJAM
TRJMG
DSET