Samsung GT-E2121B Service Manual page 24

Flow Chart of Troubleshooting
KEY_EN
VBAT
U302
MIC5365-3.3YMT
1
4
VIN VOUT
2
3
EN GND
C308
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R314 R315
C309
LED300 LED301
KEY LED
9-22
R316 R317 R318 R319
LED302 LED303 LED304 LED305