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ELECTRICAL TROUBLESHOOTING GUIDE
CD abnormal
YES
Check U802
YES
pin16,87 "DAC_BCK",
pin80,88 "DAC_LRCK",
pin83 "DAC_DATA"
data signal.
NO
YES
Check
U802 pin111,112
signal.
NO
Check TX802, U802.
Check R826,R881,
R888,R886,R883.
Check U804
YES
pin37 "DRM_CKE"
signal.
NO
Check U804.
3-7
YES
Check U804
pin38 CLK signal.
NO
Check U804.
Normal
YES
Check U801
pin41 "DAC_MCLK",
pin36 "CD_BCK",
pin35 "CD_LRCK",
pin34 "CD_DATA"
signal.
NO
Check U801
pin48, 49 signal.
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