Service Manual
DS 350 GM
Rev A 05/01/01 // SB
190113_A
24
Measure signal from angle transducer in cable reel. The return signal is a current
output and must be measured in series. Set Voltmeter to measure amps. Remove
Wire #4 from X1:4 in the cable reel and connect one voltmeter lead to wire #4 and
the other lead to X1:4. The measurement should be between 4-20ma. 20ma with the
boom at 0° or 4ma with the boom a 90° .
Refer to Drawing 3 & 6 in Section 4.
Faulty wiring between central unit and cable reel.
Check wiring
Refer to Drawing 3 in Section 4.
Measure angle signal analog input module between test point MP0(AGND) and X1:4
(ang sig). The measurement should be between 0.5-4.5v. 0.5v(500mv) with the
boom at 0° or 4.5v with the boom at 90° .
Refer to Drawing 9 in Section 4.
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Analog Input board defective.
Replace analog input board.
Refer to Drawing 4 in Section 4 and Replacement
Procedure 3 steps 4,11, & 12 in Section 5.
Correct?
END
Correct?
NO
YES
NO
Replace angle sensor.
Refer to Drawing 6 in Section 4 and Adjustment
Procedure 5 in Section 5.
Correct?
NO
Measure signal from angle transducer in central unit. The return signal is a current
output and must be measured in series. Set Voltmeter to measure amps. Remove
Wire #4 from X1:4 in the central unit and connect one voltmeter lead to wire #4 and
the other lead to X1:4. The measurement should be between 4-20ma. 20ma with the
boom at 0° or 4ma with the boom at 90° .
Refer to Drawing 3 & 6 in Section 4.
YES
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