Komatsu PC130-8 User Manual

40 Troubleshooting SEN04123-01
PC130-8
3
Before carrying out troubleshooting of electrical system 1
Connection table of fuse box
a This connection table shows the devices to which each power supply of the fuse box supplies power (A
switch power supply is a device which supplies power while the starting switch is in the ON position and
a constant power supply is a device which supplies power while the starting switch is in the OFF and ON
positions).
a When carrying out troubleshooting related to the electrical system, you should check the fuses and fus-
ible links to see if the power is supplied normally.
Type of power supply Fusible link Fuse No.
Fuse
capacity
Destination of power
Switch power supply
F04
(65A)
1 10A
Pump resistor, light switch, swing holding brake release
switch
2 30A Pump controller
3 10A Starting motor cutout relay, PPC oil pressure lock switch
4 10A
Windshield washer, cigar lighter, electrical intake air
heater
5 10A Horn
Switch power supply
F04
(65A)
6 10A (Spare)
7 10A Rotary lamp (If equipped)
8 20A Working lamp relay
9 10A Radio, speaker, one-touch power max. switch
10 10A (Spare)
Switch power supply
F04
(65A)
11 20A Air conditioner unit
12 10A (Spare)
13 10A Relay for cab light
14 10A Optional power supply (1)
Constant power supply
F05
(30A)
15 10A Optional power supply (2)
16 10A Radio backup, room lamp
17 20A Machine monitor, pump controller, starting switch (B)
18 10A (Spare)
Switch power supply
Starting switch
ACC
19 30A Engine controller
20 5A Engine controller

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English