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Komatsu 80001 User Manual

Komatsu 80001
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SEN04121-02 40 Troubleshooting
6 PC130-8
Failure code [DAF8KB] Short circuit in camera power supply 1
User code Failure code
Trouble
Short circuit in camera power supply
(Machine monitor system)
— DAF8KB
Contents of
troubl
e
• Output power supply voltage (Rating: 8 V) from machine monitor to camera is below 6.0 V or above
10 V.
Action of
ma
chine monitor
• Turns output power supply voltage (Rating: 8 V) to camera OFF.
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
a
ppears on
machine
• Camera image is not displayed on monitor screen.
Related
information
• Method of reproducing failure code: Turn starting switch ON.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective camera (Internal
short circu
it)
1. Turn starting switch to OFF position.
2. Disconnect camera connector and turn starting switch to ON
positio
n.
Disconnect camera and perform failure reproduction operation. If
fa
ilure code disappears at this time, camera is defective.
2 Defective machine monitor
1. Turn starting switch to OFF position.
2. Disconnect connector CM05, and connect T-adapter to male
side.
3. Turn starting switch to ON position.
Between CM05 (male) (1) and ground Voltage 6 to 10 V
3
Ground fault in wiring har-
ness (Contact with GND cir-
cuit)
1. Turn starting switch to OFF position.
2. Disconnect camera connector.
3. Disconnect connector CM05 and connect T-adapter to female
side.
Between CM05 (female) (1) and ground
Resis-
tance
Min. 1 MΩ
4
Hot short (Contact with 24V
circuit) i
n wiring harness
1. Turn starting switch to OFF position.
2. Disconnect camera connector.
3. Connect T-adapter to connector CM05.
4. Turn starting switch to ON position.
(Disconnect camera and check that it is not defective in
adva
nce.)
Between CM05 (1) and (6) Voltage Max. 10 V
Between CM05 (1) and (7) Voltage Max. 10 V

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Komatsu 80001 Specifications

General IconGeneral
BrandKomatsu
Model80001
CategoryExcavators
LanguageEnglish

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