LG LG9200 Service Manual page 53

4. TROUBLE SHOOTING
4.1.5 Vibrator Trouble (1)
• Block Diagram
YMU788
U201
VIBRATOR
• Vibrator Operation
- Vibrator is controlled by MIDI chip
- When vibrator signal is high, vibrator on
LCD module is enabled
VBAT
D401
R433
R434
Tr.
Q402
R436
• Check Points
- VCC lines of MIDI chip
- Vibrator signal path
- The connection between the main board
and LCD module
- The soldering of components
- The Vibrator
- 54 -
VB401
Vibrator