Komatsu Galeo PC800-8 Shop Manual page 457

40 Troubleshooting
Connection table of fuse boxes
a This connection table shows the devices to which each power supply of the fuse boxes supplies power (A
switch power supply is a device which supplies power while the starting switch is at the ON position and a
constant power supply is a device which supplies power while the starting switch is at the OFF position).
a When carrying out troubleshooting for a displayed code, you should check the fuse boxes to see if the
power is supplied normally.
Type of power
Fuse No.
supply
Switch power supply
(Circuit breaker 1)
Switch power supply
(Circuit breaker 1)
Switch power supply
(Circuit breaker 1)
Constant power
supply
(Circuit breaker 9)
(ACC circuit)
PC800, 850-8
Fuse capacity
1 10 A
2 10 A
3 10 A
4 20 A
5 10 A
6 10 A
7 10 A
8 10 A
9 10 A
10 20 A
11 25 A
12 20 A
13 20 A
14 10 A
15 10 A
16 10 A
17 10 A
18 10 A
19 10 A
20 10 A
(ACC signal)
Destination of power
EPC solenoid (for emergency pump drive)
Swing holding brake solenoid (for swing brake release)
Starting motor cut-out relay
Machine push-up solenoid
Boom shockless solenoid
PPC lock solenoid
Cigarette lighter
Windshield washer motor
Horn
Flash light
Intake air heater relay
KOMTRAX terminal
Rotary lamp
(Spare)
Radio
Left-hand knob switch
Machine monitor
Buzzer
Air conditioner unit
(Spare)
(Spare)
Service power supply (M09 connector)
DC/DC converter (12 V power supply)
Radio
Room lamp
Step light
(Spare)
(Spare)
Engine controller
Pump controller
KOMTRAX
SEN02797-00
7