5-20
30. MAIN MONITOR FAILURE DISPLAY
JOYSTICK CONTROL SYSTEM
(Including joystick unit and machine body harness system)
Problem system
Error Code Item
Short circuit Disconnection
56 Joystick caution relay fi (*1)
57 Steering R (right) Sol (Detected when power is fi fi
output)
58 Steering L (left) Sol (Detected when power is fi fi
output)
59 Steering R (right) short circuit at Sol HOT end fi X
60 Steering L (left) short circuit at Sol HOT end fi X
61 Steering Sol cut relay fi fi
62 in Abnormality in joystick neutral switch fi fi
(For detection range, see separate sheet)
63 in Abnormality in joystick potentiometer fi fi
If a trouble is detected, the joystick caution system operates.
(*1) : Since E56 is kept turned ON, breakage of its wire cannot be
judged actually.
‡ Since E59 and E60 cannot be distinguished from each other for
the reason of design of the hardware, the alarms for them are
turned on simultaneously.
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