Level 3 Repair
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8-5
8-3-1. Power On - AP Power
When Power key press,
is R1500 is 0V ?
' Power On ' does not work
Check Power Key FPCB Part & C1519
Check UCP400 state &
S/W malfunction
No
Yes
MSM_PS_HOLD(R728) = 1.8V
After Check UCP400 circuit, Replace UCP400
No
Yes
Check U702 Power stage
C794,C795 = 1.1V
C787 = 1.8V, C776 = 1.8V,
After Check U702 circuit,
Replace U702
No
Yes
C1009 = 3.5V ~ 4.2V ?
Check CON1000 component
and replace
Yes
No
Yes
Check U700 Power stage
C740, C741 = 1.2V,
C726 = 2.85V
After check U700 circuit,
Replace U700
No
Yes
Check U1107 Power stage
C1120 = 5V
L1102 = 14~18V
After check U1107 circuit,
Replace U1107
No
Yes
Summary of Contents for GT-P7320
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