Chart Of Troubleshooting - Samsung GT-B7330 Service Manual

9. Flow Chart of Troubleshooting
9-1. LOGIC
9-1-1. Power On
Power switch on
Check the current
consumption
>= 100mA?
Check the battery
voltage
>= 3.45?
Check the TP_PS_
HOLD pin PS_HOL
D = 2.6V?
Check the clock at
OSC400 = 32KHz ?
C420(VREG_MSMC1)=1.2V?
C418(VREG_MSMC2)=1.2V?
C417(VREG_MSME)=1.8V?
C410(VREG_MSMP)=2.6V?
C409(VREG_MSMA)=2.6V?
Check the clock
C148 = 19.2Mhz ?
Check the initial operation
NG
Yes
Yes
Yes
Yes
Yes
Yes
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NO
NO
Change the battery
NO
related to PS_HOLD
NO
Resolder OSC400
NO
NO
Check the clock generation circuit
9-1
Download
Check the PMIC
Check the U401