Opc (M9540Narrow Cabin Model); System Outline And Electrical Circuit - wsm M8540NARROW Workshop Manual

M8540Narrow, M9540Narrow, WSM

4. OPC (M9540NARROW CABIN MODEL)

[1] SYSTEM OUTLINE AND ELECTRICAL CIRCUIT

M9540Narrow Cabin tractors equip operator presence control (OPC) system which automatically whistling when
operator stands from the seat while engaging PTO clutch.
This system is controlled by the seat switch (3), CPU (2), PTO switch (4) and buzzer (5).
Electric Circuit
1. When sitting on the seat in the state at engine running, the battery voltage passes the seat switch (3) and the CPU
(2).
2. The CPU (2) detect the seat switch (3), PTO switch (4) position and engine running through the L terminal of
alternator.
3. When standing from the operators seat while shifting the PTO clutch lever at "ON" position, the CPU (2) turn on
the transistor (6) and buzzer (5) is whistled.
N9-M24
ELECTRICAL SYSTEM
(1) Meter Panel
(2) CPU
(3) Seat Switch
(4) PTO Switch
(5) Buzzer
(6) Transistor
(A) Key Switch
(B) Alternator
9Y1210236ELM0024US0
KiSC issued 07, 2013 A