Pioneer AVX-P7000UC 서비스 매뉴얼 - 페이지 14
{카테고리_이름} Pioneer AVX-P7000UC에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Pioneer AVX-P7000UC 16 페이지. 7 inch wide av system display/cd player 7 inch wide av system display
페이지 인쇄AVX-P7000CD,AVX-7000
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YES
RGB signal for LCD is obtained at Pin-48,
Pin-50, and Pin-52 of Q201 (NJW1300A)?
Blanking (BLK) signal is obtained at
Pin-9 to Pin-11 of Q208 (74HC4053)?
RGB signal for LCD is obtained at Pin-2 to
Pin-4 of CN003 (30-pin flexible connector)?
Normal signal is obtained at each terminals of CN003?
Replace LCD module.
2
Back light doesn't turn ON.
Back light doesn't turn ON.
NO
F101 (fuse) is broken out?
YES
TE
L 13942296513
5V is obtained at Pin-8 of Q104 (NJM2403)?
Dimmer voltage (1.35V to 3.9V) is
obtained at pin-2 of Q104 (NJM2403)?
At Dimmer mode, triangular waves are
obtained at Pin-6 of Q104 (NJM2403)?
At Dimmer mode, 0/5V rectangular
waves are obtained at Q108 (TR)?
At 100% dimmer mode, ON voltage (about
0.7V) is obtained at the base of Q105 (TR)?
Half-wave oscillating waveform is obtained at
both ends of C110 (film capacitor)?
High voltage is obtained at pin-1 and Pin-3 of CN004?
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Check CN004 and replace back light.
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NO
Replace Q201 (NJW1300A).
Check CN003 (30-pin flexible connector) and its periphery.
Check Q208 (74HC4053) and its periphery.
NO
Replace F101.
NO
Check Q103 (3-terminal regulator) and its periphery.
Check input flexible cables and their periphery.
Check Q104 (NJM2403) and its periphery.
Check Q104 (NJM2403) and its periphery.
Check Q105, Q108, and their periphery.
Check the primary windings of Inverter transformer.
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2 9
8
Check CN003 (30-pin flexible con-
nector) and its periphery.
Q Q
3
6 7
1 3
1 5
Replace T101 and T102 (Inverter transformer).
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9