20-308 PC58UU-3
TROUBLESHOOTING
JUDGMENT TABLE FOR MACHINE CONTROL
Trouble mode
Communication system
Controller power
source system
Self-diagnostic display
(Abnormal display)
Sensor power source
system
Boom positioner
system
Arm positioner system
Offset potentiometer
system
PPC hydraulic lock
solenoid system
LEFT offset stop
solenoid system
Traveling accelerator
solenoid system
Boom raising EPC
solenoid system
Error code 62 64 24 31 32 34 41 42 48 51
Monitor code —
All work equipment,
travel, and swing
All work equipment, travel, and swing speed or power is low
Engine speed lowers extremely or engine stalls
qqq
Machine cannot operate work equipment, travel, and swing at all
qq q
Abnormal sound comes out (from around pump)
One-touch decelerator does not operate
q
Fine controllability or response is low
qqq
Work equipment
Boom speed or power is low
Arm speed or power is low
Bucket speed or power is low
Offset boom speed or power is low
Boom does not move
qq qqqqq q
Arm does not move
qq qqqqq q
Bucket does not move
qq
Offset boom does not move
qq qqqqq q
Hydraulic drift is large
Time lag is large (Engine speed is low)
Compound
operation
Part loaded more moves slower in compound operation of work equipment
Travel system
Travel deviation
Travel deviation is large
Travel deviation is large
when starting
Travel speed is low
Machine cannot be steered sharply or steering force is insufficient
q
Travel speed does not change or is higher than set speed
Machine does not travel
qq
Swing system
Machine cannot swing
in both directions
qq
in either direction
Swing acceleration is low
in both directions
in either direction
Overrun of swing is large
in both directions
in either direction
Large shock is made when machine stops swinging (in either direction)
Large abnormal sound is made when machine stops swinging
Swing hydraulic drift is large
when brake is turned ON
when brake is turned OFF
Engine cannot be controlled (cannot be accelerated or decelerated).
Blade speed or power is low
Hydraulic drift of blade is large
Troubleshooting code when abnormal display is given E-11 E-12 E-1 E-2 E-3 E-4 E-5 E-6 E-7 E-8
E-MODE
(6)
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