LG W4-4 - Page 65

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ELECTRICAL TROUBLESHOOTING GUIDE
No 3.2 V (DVDD3V15) DSP IC
Is the
VCC supplied to IC406
pin2?
Check VCC_3.7VA on D101.
YES
YES
NO
Check IC406 and replace.
No 5 V (5V_LOADER)
Is the
VCC supplied to IC302
pin2?
Check 6 VA on SMPS board.
YES
YES
NO
Is there
signal at IC302
pin1?
Check IC100 pin68 (LDO_CTRL).
Check IC302 and replace.
YES
NO