LG LG-D618 - Main LCD Trouble Shooting

3. TROUBLE SHOOTING
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3.11 Main LCD Trouble Shooting
Main LCD control signals are generated by MSM8226
Replace component U9301
Disconnect and re-connect
LCD Connector (CN7100)
Replace component U4100
Replace LCD Module
Rework TP6, TP7
LCD back light is ON?
TP6, TP7
Filter Solder status is normal?
Check LCD Power in Main Board
TP1(DDVDL_-5.5V)
TP2(DDVDH_+5.5V)
Check LCD circuitswithout LCD
module TP3(VREG_L15_2V8)
TP4(VREG_L8_1V8)
TP5(PMIC_LED_A)
LCD display OK?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
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