Servo Motor Test - Yamaha VMX12H Supplementary Service Manual

SERVO MOTOR TEST

1. Disconnect:
motor coupler
2. Connect:
Battery
3. Check:
motor operation
Not operation Replace.
4. Measure:
.Potentiometer resistance
Use the Pocket Tester
Out of specification
30%
7.5
Replace.
(68°F)
20°C
at
7-66