Nokia 1508 Manual page 25

1508(RM-388)
Baseband Description and Troubleshooting
Keypad Circuitry
Vibrator Faulty (reference to the Vibrator Circuit
Design)
First check whether the vibrator well with the PWB.
Set the digital power at 3V (The voltage value may change by model of the vibrator). The
Power should fall on the two control points of the vibrator, observe whether it works. If the
Vibrator does not work, please do the replacement; if the vibrator works, which means no
control signal arrivals, do the check against the current's flow.
In addition, No Vibration after installation usually dedicates the welding excursion of the
vibration. Check and see if it has been connected properly.
Issue 1
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