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8. Level 3 Repair
8-4-1. Power On
Check Battery voltage
≥
3.8V?
YES
NO
Charge device with TA.
Swap battery if battery voltage is too
low (less than 3.0V)
END
YES
No
No Power
NO
SWAP Power key FPCB
YES
NO
Check voltage of U6002
L6000 = 1.13V , L6002 = 1.904V , L6003
= 0.752V, L6004 = 0.8V , L6005 = 0.8V,
L6006 = 0.952V
Swap U6002, if measured value is not
same with above.
※ Consider voltage margin ±10%
YES
NO
Swap OSC6000(first) & U6008
※ Test condition (Oscilloscope setting)
: 20.0us.div (time division)
YES
Check Power on
YES
Yes
Swap FRONT-LCD ASSY
Check clock of OSC6000
76.8MHz?
Check voltage
TP_AP_PS_HOLD = 1.8V
When pressing the Power key,
R6016 voltage is low?
Does Boot sound and
vibration motor work when
power on?
Содержание Galaxy A52s
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