3. TROUBLE SHOOTING
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3.10 Main LCD trouble
Main LCD control signals are generated by MSM897
Follow the power ON
Trouble shooting
Change the
Lower FPCB
Disconnect and re-connect
LCD Connector in Lower FPCB(CN16001)
No
No
No
START
LCD display OK?
Check LCD Power in Main Board
TP1(DSV_EN)
TP2(+5V5_DDVDH)
TP3(-5V5_DDVDL)
TP4(WLED_A)
Check LCD Power in Lower FPCB
TP5(+3V1_VREG_L22)
TP6(+1V8_VREG_LVS3)
TP7(+5V5_DDVDH)
TP8(-5V5_DDVDL)
Change the Main Board
The LCD works
Change the LCD Module
END
Press PWR key turn the power on
Yes
Yes
Yes
Yes
Is the circuit powered?
No