Samsung GT-P7320 Service Manual page 41

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