Samsung SM-T350 Service Manual page 47

Wireless device

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Level 3 Repair

8-3-4. POWER ON

Cell-phone can`t power on.

Check the Battery Voltage.

Battery > 3.4V?

Power-on the phone and check

the power-on sound

or motor vibration.

Sound or vibration ok ?

Check the SW_PWR, R5031,

C5039(soldering

crack,open,etc)

Check the U4001 output

voltage

(C4102=3.4V)

Check the U4000 output signal

(MSM_PS_HOLD(TP4003 =

1.8V)

check the initial operation

END

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Yes

Connect TA to charge the battery.

Yes

Change the OCTA ASSY

Abnormal

Change the Materials

And retry to the power-on operation.

If the output voltage is not satisfied with normal

condition, replace U40 01

If the output voltage is not satisfied with normal.

condition, Check OSC4000, U4000, UME3000,

U3000, UCP3000

8-10

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