Sakai SW800-II, Руководство по ремонту

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10-006
TROUBLESHOOTING
(NOTICE)
When measuring the resistance, connect the test probes to both ends of the portion to be
measured. Make also sure that no voltage is applied to the portion to be measured.
When measuring the internal resistance of equipment, be sure first to disconnect all harnesses
from the equipment.
When measuring the resistance of a harness, disconnect the equipment connected to both ends
of the harness.
2) Measuring voltage using tester
2-1) Measuring voltage of equipment A (measuring voltage between terminals 1 and 3)
3 4 2 5 1
2 3 1
1 2 3
Equipment A
Voltmeter
(tester)
Main power source
of equipment B
Ground of
equipment A
Signal from
equipment A
Power to
equipment A
Equipment B
Equipment B
Equipment A
GW750‑2‑10007
Inspection procedure
①
Connect the connectors of equipment A and that of equipment B.
②
Connect the test probe (+) to connector terminal 3 of equipment A and the test probe (-) to connector
terminal 1 of equipment A and measure the voltage. Note that reversing the connector terminals between
the probes (+) and (-) changes the result of the measurement. Be sure to connect the probe (+) to the
power source side and the probe (-) to the ground side.
Measurement method
For measurement of voltage, connect the tester probes in parallel to the portion to be measured. Because
the voltage can be measured only when the connector is connected in position, contact the tester probes to
the terminals without disconnecting the connector. The following methods are available:
①
Prepare the test harness for the measurement.
②
Insert a wire from the backside of the connector.
③
Remove the bundling tape from the harness to separate each cable, and stick the needle into the
relevant cable.
(NOTICE)
Except for preparing the test harness, proper protection must be made after the measurement to
prevent corrosion in the connector terminals or harnesses.
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