Pioneer AVX-P7300DVD, Service Manual

Page: 102 / 142

102
AVX-P7300DVD
RGB signal for LCD is obtained at Pin-19,
Pin-21 and Pin-24 of Q201(IR3Y29BM)? Replace Q201(IR3Y29BM).
Blanking signal is obtained at Pin-9 to Pin-11
of Q271(TC74HC4053AFS)?
Sync signal is obtained at Pin-21 and Pin-22
of Q003(Gate ary) when the input signal is input?
RGB signal is obtained at Pin-40 to Pin-42
of Q201(IR3Y29BM) when the RGB signal is input?
Sync signal is obtained at Pin-36 of Q201
(IR3Y29BM) when the RGB signal is input?
RGB signal for LCD is obtained at Pin-26 to
Pin-28 of CN003(Connector)?
Normal signal is obtained at each terminal of CN003? Check CN003 and its periphery.
Check Q271(TC74HC4053AFS) and its periphery.
Go to Item
3
Out of Sync.
Go to Item
3
Out of Sync.
Check CN001 , R248 to R250 ,
the input connecting flexible cable and its periphery.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Replace LCD module.
Normal Vcom signal is obtained at TP13?
Check Q501(TA75072F) , Q201 , Pin-38 of
Q201(IR3Y29BM) and its periphery
Q502 to Q504(Buffer), and their periphery.
Check Pin-3 and Pin-5 of
Q282(TC7W14FU) , Pin-8 of
Q003(Gate array) and its periphery.