AVX-7300
Check Q501(TA75072F) , Q201 , Pin-38 of
Q201(IR3Y29BM) and its periphery
NoNormal Vcom signal is obtained at TP13?Q502 to Q504(Buffer), and their periphery.
Yes
RGB signal for LCD is obtained at Pin-19,Replace Q201(IR3Y29BM).
No
Pin-21 and Pin-24 of Q201(IR3Y29BM)?
Yes
Blanking signal is obtained at Pin-9 to Pin-11Check Pin-3 and Pin-5 of
of Q271(TC74HC4053AFS)?NoQ282(TC7W14FU) , Pin-8 of
Q003(Gate array) and its periphery.
Yes
Sync signal is obtained at Pin-21 and Pin-22Go to Item 3 Out of Sync.
of Q003(Gate ary) when the input signal is input?No
Yes
RGB signal is obtained at Pin-40 to Pin-42 Check CN001 , R248 to R250 ,
No
of Q201(IR3Y29BM) when the RGB signal is input?the input connecting flexible cable and its periphery.
Yes
Sync signal is obtained at Pin-36 of Q201Go to Item 3 Out of Sync.
(IR3Y29BM) when the RGB signal is input?No
Yes
RGB signal for LCD is obtained at Pin-26 toCheck Q271(TC74HC4053AFS) and its periphery.
Pin-28 of CN003(Connector)?No
Yes
Normal signal is obtained at each terminal of CN003?Check CN003 and its periphery.
No
Yes
Replace LCD module.
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