Komatsu PC88MR-10 Shop Manual page 274

10 Structure and function
Electrical control system
Work equipment and travel automatic lock function
(PC88MR-L409-042-K-00-A)
1. Battery disconnect switch
2. Battery
3. Battery relay
4. Fusible link
5. Fuse box
6. Starting switch
7. Lock lever
8. PPC lock switch
9. Pump controller
10. Work equipment automatic lock relay
11. 1st-line attachment proportional switch
12. Breaker operating switch
13. PPC lock solenoid valve
14. Control valve
14a. Merge-divider valve
14b. Self-pressure reducing valve
15. Main pump
16. Lock lever automatic lock cancel switch
Input/output signal
a: PPC lock signal
b: PPC lock signal
c: Lock lever automatic lock cancel switch signal
d: Lock lever automatic lock relay drive signal
e: PPC lock solenoid valve drive signal
f: Switch potentiometer signal
g: Breaker operating switch signal
h: Oil pressure sensor signal
i: Oil pressure switch signal
10-196 PC88MR-10