Vibrator Trouble - LG CG225 Service Manual

4.11 Vibrator Trouble

Block Diagram
VIBRATOR
Vibrator Operation
• Vibrator is controlled by DBB GPIO
• When vibrator signal is high, vibrator is enabled
Trouble Shooting Setup
• Connect PIF to the phone, and power on.
• Enter the engineering mode.
• Go to menu "Baseband → Alert → Vibrator"
R314 U303
VIBRATOR
VBAT
R314
20
R320 1.5K
R322
100K
C309
4.7u
(1608)
R320
- 63 -
4. TROUBLE SHOOTING
VBAT
R315
47K
R318
Q302
220
EMZ2
Check Points
• VCC lines (VBAT) of U303
• Vibrator signal path
• The connection between the main board and
vibrator module
• The soldering of socket
• The Vibrator (t=2.7mm)
Trouble Shooting Procedure
• Check vibrator signal
• Check soldering of components
• Check connection of cable-to-socket
• Check vibrator PORON thickness
Vibrator Signal
Check
soldering !
VIB