Lexmark 4227 - Forms Printer B/W Dot-matrix Service Manual page 112

4227-300
Main Logic Board<-->Sub Logic Board
Main Logic Board
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
Pin 19
Pin 20
Pin 21
Pin 22
Main Logic Board<-->Paper Select Sensor
6-8
Service Manual
CN3
HCSEL
Signal Gnd
HDTHERMO
R1COM
L1COM
R2COM
L2COM
L3COM
R3COM
L4COM
R4COM
L5COM
R5COM
L6COM
R6COM
L7COM
R7COM
L8COM
L8COM
L9COM
R9COM
BUZZER
Pin 1 Not Used
Pin 2 Signal Gnd
Pin 3 FRETRA
Pin 4 Signal Gnd
Sub Logic Board
CN3
Pin 22
HCSEL
Pin 21
Signal Gnd
Pin 20
HDTHERMO
Pin 19
R1COM
Pin 18
L1COM
Pin 17
R2COM
Pin 16
L2COM
Pin 15
L3COM
Pin 14
R3COM
Pin 13 L4COM
Pin 12 R4COM
Pin 11 L5COM
Pin 10 R5COM
Pin 9 L6COM
Pin 8 R6COM
Pin 7 L7COM
Pin 6 R7COM
Pin 5 L8COM
Pin 4 R8COM
Pin 3 L9COM
Pin 2 R9COM
Pin 1 BUZZER
CN4