HT-DV40H
7 – 3
3. Both Video and Audio do not operate normally
43
42
58
57
252
252
IC1
1
2
3
4
IC1
5
IC1
5
The RF waveform is normal and the time is displayed normally, but no sound is produced. Or the sound has dropouts.
1. Insert disc into DISC loader.
Yes
2. When playback starts does the disc initialise ?
No
Repeat steps as Focus Errror system check occurred.
Yes
3. Is the RF signal level output from IC1 pin no 252 normal?
( Waveform drawing Figure 3 for CD and Figure 2 for DVD )
No
Is the objective lens of optical pickups clean ?
Yes
Yes
4. Replace Servo PWB.
No
Replace optical pickup mechanism unit.
Yes
5. Does the supply shows as +1.8V / + 3.3 V / + 5 V / + 12V?
No
Check supply ( IC3 Pin No. , +1.8V / CNP5 Pin 1, +3.3V /
CNP5 Pin 3, +5V / CNP5, +12V
Yes
6. Is Reset function OK?
No
Check CNP4 pin no 18 .
Yes
7. Is clock frequency shows 27MHz?
No
Check clock circuit ( XL1 , C86 , C92 )
Yes
8. Is the SDRAM is normal?
No
Check IC4 pin no 38 .
Yes
9. Is the DSP is normal?
No
Check IC1 Data Bus .
Yes
10. Is the Audio out is normal?
No
Check Audio out circuit ( CNP13A Pin No.1 and 3 )
Yes
11. Is the Video out is normal?
No
Check Video out circuit ( IC1 Pin No.211, 218, 219 and 221 )
Figure 2
Figure 1
Figure 3
2
9
IC6
6
7
Figure 4
Summary of Contents for HT-DV40H
Page 13: ...HT DV40H 2 6 MEMO ...
Page 15: ...HT DV40H 4 2 IC701 IXA161AW00 PR PB Y S01 Figure 4 2 MAIN BLOCK DIAGRAM 2 2 ...
Page 19: ...HT DV40H 4 6 Figure 4 6 POWER BLOCK DIAGRAM 2 2 ...
Page 30: ...HT DV40H 5 11 MEMO ...
Page 34: ...HT DV40H 6 4 Figure 6 3 MAIN SCHEMATIC DIAGRAM 3 8 TO SUBWOOFER PWB D BI402 13 14 15 16 17 18 ...
Page 35: ...HT DV40H 6 5 Figure 6 4 MAIN SCHEMATIC DIAGRAM 4 8 MIC_IN A B C D E F G H 1 2 3 4 5 6 ...
Page 36: ...HT DV40H 6 6 Figure 6 5 MAIN SCHEMATIC DIAGRAM 5 8 AZ4558CME JP826 7 8 9 10 11 12 ...
Page 38: ...HT DV40H 6 8 Figure 6 7 MAIN SCHEMATIC DIAGRAM 7 8 AUDIO SIGNAL A B C D E F G H 1 2 3 4 5 6 ...
Page 39: ...HT DV40H 6 9 Figure 6 8 MAIN SCHEMATIC DIAGRAM 8 8 SPEAKER TERMINAL 7 8 9 10 11 12 ...
Page 40: ...HT DV40H 6 10 Figure 6 9 USB SCHEMATIC DIAGRAM BI706 A B C D E F G H 1 2 3 4 5 6 ...
Page 41: ...HT DV40H 6 11 MEMO ...
Page 45: ...HT DV40H 6 15 Figure 6 13 DISPLAY SCHEMATIC DIAGRAM 2 2 7 8 9 10 11 12 ...
Page 47: ...HT DV40H 6 17 MEMO ...
Page 49: ...HT DV40H 6 19 Figure 6 16 DVD SCHEMATIC DIAGRAM 2 8 7 8 9 10 11 12 ...
Page 52: ...HT DV40H 6 22 Figure 6 19 DVD SCHEMATIC DIAGRAM 5 8 7 8 9 10 11 12 ...
Page 54: ...HT DV40H 6 24 Figure 6 21 DVD SCHEMATIC DIAGRAM 7 8 CD SIGNAL A B C D E F G H 1 2 3 4 5 6 ...
Page 67: ...HT DV40H 6 37 Figure 6 34 WIRING SIDE OF POWER PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Page 71: ...HT DV40H 6 41 Figure 6 38 WIRING SIDE OF DISPLAY PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
