Pinguely-Haulotte HA20PX, Руководство по ремонту

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BREAKDOWN DETECTION FLOW CHART
Sheet DP028
NO JIB MOVEMENT (UP AND / OR DOWN)
FROM THE PLATFORM (OR TURNTABLE) CONTROL PANEL
Folio 3/5
The defective
movement up (1) or
down (2) is made in response to an
opposite movement control:
down (1) or up (2)
NO
YES
- Invert the coils of the jib electrovalve
YV18A and YV18B
- Press the pedal and activate the platform
(or turntable) jib switch
B
Put coils YV18A and YV18B back
in their original positions
D
E
NO
YES
12V
OK
- Open the turntable control panel
- Press the pedal and activate the jib switch. Check for
12V voltage at terminals 407A (down) or 408A (up) of
the printed circuit
Replace coil YV18A
(down) or YV18B
(up)
END
See Fiche
C059
NO
YES
12V
OK
Replace the
U1 module See Fiche
C058 or C107
Repair the connection or
replace the wiring harness
between the turntable control
panel and electrovalve YV18
END
NO
YES
The fault
persists
Replace the
printed circuit See Fiche
C063
END
END
Press the pedal and activate the jib switch.
Check for 12V voltage at the terminals of
the YV18A (down) or YV18B (up)
connector