PAT DS150 - Page 35

Troubleshooting Flow Charts
28
PREVIOUS PAGE
Measure the A2B signal in the cable reel between X1:Brown and X2:Red
wires on the slip ring with an ohmmeter.
Switch closed =4700 ±500Ohms
Switch open => 1 Megaohm
Reconnected slip ring wires.
Refer to system wiring diagram.
Correct?
No
Fault in wiring between boom nose box and cable reel. Check
for damaged length cable and wiring.
Refer to system wiring diagram.
If broken length cable, Refer to length cable replacement.
Measure the A2B signal in the cable reel between terminal 7 and 8 with an ohmmeter.
Switch closed =4700 ±500Ohms
Switch open => 1 Megaohm
Reconnected slip ring wires.
Refer to system wiring diagram.
Correct?
No
Replace slip ring
Refer to cable reel parts list.
Measure the A2B signal in the boom base 10 pin receptacle between terminal 5 and 6
with an ohmmeter.
Switch closed =4700 ±500Ohms
Switch open => 1 Megaohm
Reconnected slip ring wires.
Refer to system wiring diagram.
Correct?
Fault in 7 conductor cable between cable reel and
No
boom base box.
Refer to system wiring diagram.
NEXT PAGE