Komatsu PC210-8, Руководство по ремонту

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UEN00240-01 40 Troubleshooting
12
PC210, 230, 240-8
(For PC210 K50001-K51094, PC230 K50001-K50113 and PC240 K50001-K50303).
Troubles that occur when power supply of pump controller is defective
a
The solenoid power supply (F01-2) of the pump controller is used by the controller to drive the solenoids
and relays. Accordingly, if the solenoid power supply is turned off, when the controller outputs the
power to the solenoids or relays, the power is not supplied to any of the solenoids and relays and all or
some of the following failure codes are displayed simultaneously.
q
[DW43KA], [DW43KB]: Travel speed solenoid system
q
[DW45KA], [DW45KB]: Swing holding brake solenoid system
q
[DW4WKA], [DW4WKB]: Bucket dump prohibit solenoid system
q
[DW91KA], [DW91KB]: Travel junction solenoid system
q
[DWA2KA], [DWA2KB]: Service solenoid system
q
[DWK0KA], [DWK0KB]: 2-stage relief solenoid system
q
[DXA8KA], [DXA8KB]: PC-EPC (F) solenoid system
q
[DXA9KA], [DXA9KB]: PC-EPC (R) solenoid system
q
[DXE0KA], [DXE0KB]: LS-EPC solenoid system
q
[DXE4KA], [DXE4KB]: Service current EPC system (if attachment is installed)
q
[DXE5KA], [DXE5KB]: Merge-divider main solenoid system
q
[DXE6KA], [DXE6KB]: Merge-divider LS solenoid system
a
If the above problems occur, check the related fuse (F01-2) and inlet voltage of the pump controller.
1)
Disconnect connector C02 of the controller and connect a T-adapter to the wiring harness side.
2) Turn the starting switch ON.
3) Measure the voltage between each of pins (116), (118), and (121) and each of pins (115), (117),
and (120).
a
Pins (116), (118), and (121) are the power supply and pins (115), (117), and (120) are the chassis
ground.
a
If the voltage is 20 – 30 V, it is normal.
a
Power supply connector (C02) of pump controller