Troubleshooting Guide; Picture Dead - LG L320-BN Service Manual

1. PICTURE DEAD

Is the Power right?
Is the CCD VCC (15 V, -8.5 V, 5 V) right?
Is the CSP VCC(3.3 V, 1.8 V) right?
Is the XRST right?
Is Video out right?
Is Frequency right?
Is VIDEO_IN0~11 right?
Check the CCD (IC503 pin8)

TROUBLESHOOTING GUIDE

YES
YES
YES
YES
YES
YES
YES
NO
NO
Check the Power(L2516, C2515, IC2502).
NO
Check the Power(L2518, IC704).
NO
NO
NO
Check the X-TAL(X700).
NO
Check the IC504(AFE).
3-9
Check the Power.
Check the IC703.
Check the IC706.