While Starting Switch Is In Off Position, Service Meter Is Not Displayed; Machine Monitor Cannot Be Set In Service Mode - Komatsu PC130-8 Shop Manual

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40 Troubleshooting

E-24 While starting switch is in OFF position, service meter is not

• When starting switch is turned OFF, service meter is not displayed.

• While starting switch is at OFF position, if following switches are operated, service meter is dis-

played at top center of screen.

Operation of switches: [4] + [1] (Press simultaneously)

Possible causes

Defective backup power sup-

and standard

value in normal

2 Defective machine monitor

E-25 Machine monitor cannot be set in service mode

• If following switches are operated, machine monitor is set in service mode.

Operation of switches: [4] + [1] o [2] o [3] (While pressing [4], press other switches in order)

Possible causes

and standard

value in normal

1 Defective machine monitor

Standard value in normal state/Remarks on troubleshooting

When starting switch is turned ON, if machine monitor displays

nothing, backup power supply system may be defective. In this

case, carry out troubleshooting for "E-1 When starting switch

turned ON, machine monitor displays nothing".

If cause 1 is not detected, machine monitor may be defective.

(Since trouble is in system, troubleshooting cannot be carried out.)

Standard value in normal state/Remarks on troubleshooting

Machine monitor may be defective. (Since trouble is in system,

troubleshooting cannot be carried out.)

Troubleshooting