Motorola Moto X Force Troubleshooting Manual page 78

Vibrator Troubleshooting
Check that the vibrator motor is seated properly (correct alignment and pads
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are not lifted) and the counter weight is not bent and can rotate freely.
Measure the resistance across the vibrator, it should be 14ohms +/- 4ohms.
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Check that E5101 and E5102 are not skewed or damaged.
•
• Check C5105, C5106, C5107 for damage or any process related defects.
• Check the motor itself by applying 2.4V across the C5105, it should spin freely
and continuously. If the motor spins when 2.4V is applied externally, but not
when driven from CQA app, x-ray U5101 for defects and replace as needed.
NOTE: If motor does not spin, or if motor stutters, but starts working normally after
turning it manually, it has a "dead-spot". Consider it a failure and replace
the motor.
MOTOROLA CONFIDENTIAL
Moto X Force/DROID Turbo 2
BASEBAND TROUBLESHOOTING GUIDES