Pioneer AVX-7300/UC Service Manual page 52

AVX-7300
3Out of Sync
Video signal is obtained at Q652(TR)?
Yes
Sync signal is is obtained at
Pin-36 ofQ201(IR3Y29BM)?
Yes
Sync signal is obtained at Pin-21 and Pin-22
of Q003(Gate array) when the input signal is input?
Yes
Sync signal is obtained at Pin-34
of Q201(IR3Y29BM)?
Yes
Check CN003 and LCD.
4No color
Video signal is obtained at Pin-3
of Q201(IR3Y29BM)?
Yes
RGB signal is obtained at Pin-40 to Pin-42
of Q201(IR3Y29BM) when the RGB signal is input?
Yes
X'tal oscillating waves(NTSC) are obtained at Pin-14
and Pin-16 of Q201(IR3Y29BM)?
Yes
X'tal oscillating waves(PAL) are obtained at Pin-14
and Pin-16 of Q201(IR3Y29BM)?
Yes
Check Q201(IR3Y29BM) and replace it.
52
Check CN001 , Q651 and their periphery.
No
Check R239(LPF) and their periphery.
No
Check Q291 to Q293 and their periphery.
No
Check Q282 , Pin-9 of Q003
No (Gate array) and their periphery.
Check Pin-3 of Q201 ,
C204 and their periphery.
No
Check CN001 , R248 to R250 ,
No
input flexible cables , and their periphery.
Check X202(Ceramic resonator) , Q207,
No
Q212 and their periphery.
Check X201(Ceramic resonator) , Q208,
Q211 and their periphery.
No