Lexmark W812 Service Manual page 191

4022-XXX
Pin numbers and voltage levels for Engine Board ↔ HVPS ↔ Clutch Registration
and Sensor Registration
Engine
HVPS
Board
P13-2 P131-19/
P133-1
P26-3 ---
P28-3 ---
• Coil resistance of Clutch Registration: 90 Ω ± 10% (20°C)
Clutch/
Signal Name
Sensor
P1331-4 /REGI CLUTCH ON
P261-1 /REGI SNR ON
P281-1 /OPT1 ON
Signal Direction
M: Engine
Board, Trigger
C: Clutch
S: Sensor
M → C
Level
M ← S
Level
M ← S
Level
Connector Locations
High Low
level level
24V 0V
3.3V 0V
3.3V 0V
5-27