Hitachi Zaxis 850LC-3 Operator's Manual page 334

Problem
Work Mode Selector
Does Not Work
Fast/Slow Travel Speed
Does Not Function
Auto-Idle Does Not Work
TROUBLESHOOTING
ELECTRICAL SYSTEM
Cause
Mode switches
Electrical connector
Wire harness (between MC and moni-
tor)
Main controller (MC)
Solenoid valve unit
Travel mode switches
Pilot pressure switch (Travel)
Pump delivery pressure sensor wire har-
ness
Main controller (MC)
Solenoid valve unit
Damaged travel motor
Fuse
Switch panel
Electrical connector
Wire harness
EC motor
Pressure switches (Travel, Front)
Main controller
11-8
Solution
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
Replace fuse.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.