2-44
ELECTRICAL TROUBLESHOOTING GUIDE
5. NO CVBS VIDEO OUTPUT
No CVBS video on Display.
Check JK251 and RCA cable connection.
Is there CVBS signal on L2V1?
Check IC501’s VCC or replace IC501.
NO
YES
YES
6. NO AUDIO OUTPUT
BD/CD/DVD disc or USB play.
YES
6A
Replace AMP PCB
CN401 pin11, 12, 15
signal OK?
R623, R624 signal OK?
CN600 pin24, 22, 18, 17,
16 signal OK?
IC700 pin35, 39
signal OK?
Check IC501’s I2S output
trace.
Check IC602’s I2S output
trace.
Check IC101’s signal trace.
Check IC700 or replace
IC700, IC701.
NO
NO
NO
NO
YES
YES
YES
YES
Содержание BH4120SN
Страница 56: ...2 47 WAVEFORMS IC501 MT8560 X TAL 27 MHz 1 1 7 8 10 9 1 SYSTEM PART 1 ...
Страница 59: ...2 50 WAVEFORMS H_SDA H_SCL 11 12 5 HDMI PART 12 11 ...
Страница 60: ...2 51 WAVEFORMS HDMI_CLK_N 13 13 12 11 14 HDMI_0_N 14 JK803 ...
Страница 61: ...2 52 ...
Страница 79: ...2 87 2 88 2 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 80: ...3 AMP P C BOARD TOP VIEW BOTTOM VIEW 2 89 2 90 ...
Страница 81: ...4 JACK P C BOARD 5 FRONT P C BOARD TOP VIEW BOTTOM VIEW 2 91 2 92 TOP VIEW BOTTOM VIEW ...
Страница 83: ...3 2 ...
Страница 87: ...A800 Front SPK A700 Center SPK A600 Rear SPK 4 SPEAKER SECTION 4 1 FRONT CENTER REAR SPEAKER ...
Страница 88: ...A900 4 2 PASSIVE SUBWOOFER ...
Страница 89: ......
Страница 103: ...4 14 MEMO ...