Troubleshooting; Electrical System - Doosan DX700LC Operation And Maintenance Manual

Anytime that a malfunction occurs, take immediate corrective
action. Check for and investigate the cause of the malfunction. A
schedule maintenance program can prevent malfunctions from
occurring by doing preventative maintenance. A systematic
approach should be taken to troubleshooting, since several
overlapping malfunctions may give the appearance of a problem
that does not exist. If cause for the malfunction cannot be
determined, contact your DOOSAN distributor. Never perform
an adjustment of or disassembly of, hydraulic components,
electrical and electronic components, without first consulting a
DOOSAN distributor.

ELECTRICAL SYSTEM

Problem
Battery will not hold a
charge.
Low battery power.
Engine speed is not
controllable.
Power mode selector does
not work.

Troubleshooting

Troubleshooting
6
Cause
Low battery power.
Alternator belt loose or bad.
Loose or corroded terminals.
Alternator faulty.
Internal battery short.
Short circuit in wiring.
Speed control dial failed.
Throttle controller failed.
Speed control motor failed.
Blown fuse.
Wiring harness damaged.
Connector failed.
Blown fuse.
Power mode selector switch failed.
Connector failed.
Wiring harness damaged.
e-EPOS controller failed.
Remedy
Clean and retighten.
Tighten or replace belt.
Tighten or replace as required.
Repair or replace as required.
Replace battery.
Repair as required.
Replace control dial.
Replace controller.
Repair or replace as required.
Replace fuse.
Repair or replace as required.
Repair or replace as required.
Replace fuse.
Replace switch.
Replace connector.
Repair or replace as required.
Repair or replace as required.
OP000030
OP000030
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