Sakai CR271, Shop Manual

Page: 148 / 170

10-006
TROUBLESHOOTING
2) Measuring voltage and current flowing 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.