Pioneer AVX-7300/UC Service Manual page 50

AVX-7300
Normal Vcom signal is obtained at TP13?
Yes
RGB signal for LCD is obtained at Pin-19,
Pin-21 and Pin-24 of Q201(IR3Y29BM)?
Yes
Blanking signal is obtained at Pin-9 to Pin-11
of Q271(TC74HC4053AFS)?
Yes
Sync signal is obtained at Pin-21 and Pin-22
of Q003(Gate ary) when the input signal is input?
Yes
RGB signal is obtained at Pin-40 to Pin-42
of Q201(IR3Y29BM) when the RGB signal is input?
Yes
Sync signal is obtained at Pin-36 of Q201
(IR3Y29BM) when the RGB signal is input?
Yes
RGB signal for LCD is obtained at Pin-26 to
Pin-28 of CN003(Connector)?
Yes
Normal signal is obtained at each terminal of CN003?
Yes
Replace LCD module.
50
Check Q501(TA75072F) , Q201 , Pin-38 of
Q201(IR3Y29BM) and its periphery
No
Q502 to Q504(Buffer), and their periphery.
Replace Q201(IR3Y29BM).
No
Check Pin-3 and Pin-5 of
No
Q282(TC7W14FU) , Pin-8 of
Q003(Gate array) and its periphery.
Go to Item 3 Out of Sync.
No
Check CN001 , R248 to R250 ,
No
the input connecting flexible cable and its periphery.
Go to Item 3 Out of Sync.
No
Check Q271(TC74HC4053AFS) and its periphery.
No
Check CN003 and its periphery.
No