Repair manual
84
14.1.1 -General operation
ANOMALY
PROBABLE CAUSE
SOLUTION
The motor does not start, the
starter is activated
• Diesel tank empty
• Fuse FU1 defective
• Diesel supply circuit defective
• Wiring defective
• Module U1 defective
• Stop motor solenoid YA1 defective
Fiche DP066
The motor does not start, the
starter is not activated
• Emergency stop locked
• Generator defective
• Batteries defective
• Fuses FU1, FU4 or FU8 defective
• Wiring defective
• Switch SB3 or SB4 defective
• Relay KA2 defective
The motor starts, then stops
after 5s.
• Diesel tank empty
• Diesel supply circuit defective
The motor does not start
from the platform station but
does start from the turntable
station
• Fuse FU6 defective
• Defective connection of switch SB4
• Switch SB4 defective
• Wiring harness defective
The motor does not start
from the turntable station but
does start from the platform
station
• Switch SB3 defective
• Wiring harness defective
No motor acceleration regar-
dless of the movement con-
trolled from the platform
• Electronic module U1 defective
• Wiring harness defective
No motor acceleration by
activating the accelerator
switch SA2 on the turntable
control station
• Fuse FU3 defective
• Relay KT2 defective
• Electronic module U1 defective
• Wiring harness defective
• Accelerator switch SA2 defective
• Motor accelerator coil YA2 defective
No movement available (from
turntable or platform station)
• Insufficient hydraulic oil
• Fuse FU7 or FU4 or FU10 defective
• Wiring harness defective
• Electrovalve YV1 defective
• Incorrect "Load sensing" pressure setting
• Motor-pump coupling defective
• Hydraulic pump defective
• Pressure limiter defective
• Distribution block input module defective
• Pump regulation unit incorrectly set or de-
fective
• Hydraulic pump defective
• Electronic module U1 defective
• Relay KMG defective
• Printed circuit defective
• Key switch SA1 defective
Summary of Contents for HA20PX
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Page 10: ...Repair Manual vi 15 CORRECTIVE MAINTENANCE PROCEDURES 177...
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Page 47: ...Repair manual 135 41 7 SAFETY LOCATION...
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Page 51: ...Repair manual 135 45 8 1 3 Positions of fuses 19 22 26 27 23 25 24 21 20...
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Page 248: ...CORRECTIVE MAINTENANCE SHEET Folio 2 2 CHANGING THE HYDRAULIC PUMP Sheet C091 7 6 3 3 1 2 4 5...
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Page 265: ...CORRECTIVE MAINTENANCE SHEET Folio 3 3 CHANGING THE SLEW RING Sheet C106 12 13 11...
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Page 274: ...CORRECTIVE MAINTENANCE SHEET Folio 2 2 CHANGING THE JIB CYLINDER Sheet C115 2 4 3 5 1...
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Page 282: ...CORRECTIVE MAINTENANCE SHEET CHANGING THE COUNTERWEIGHTS Sheet C134...