2-46
ELECTRICAL TROUBLESHOOTING GUIDE
No HDMI audio / video output.
Replace IC501.
JK803’s status OK?
JK803 pin19 HPD about 3.3 V OK?
JK803 pin18 VCC 5 V OK?
Is there signal on R841, R842?
Is there signal on TMDS?
Replace JK803.
Check L803 and VCC 5 V line.
Check hot plug detect signal from TV.
Check I2C trace from IC501.
Check TMDS trace from IC501.
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
7. NO HDMI OUTPUT
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 ...