HT-DV40H
7 – 2
From 7-1 Page
Is focus control drive voltage output from pins 13 and 14 of IC2?
No
Is voltage of 5 V applied to pin 8, 19 of IC2.
Yes
Yes
Yes
Yes
Yes
Yes
Is focus control drive voltage applied to the focus actuator
terminal? (Pin 23 and 24 of IC1)
No
Check line between IC2 and focus actuator terminal.
Check connection of optical pickup cables.
If no abnormality is detected, replace the optical pickup
mechanism unit.
• “No Disc” is displayed during DVD playback (when CD is playable) ... When DVD laser does not light up.
Is control signal output from pin 18 of IC1?
No
Check signal line between IC1 and Q9.
Is voltage of 3.3V applied to emitter of Q9?
No
Check 3.3V line.
Is voltage of approx. 2.3 V supplied to pin 2 of CNP1?
No
No
No
No
Check around Q9.
Check connection of optical pickup cables.
If no abnormality is detected, replace optical pickup mechanism
unit.
Note: The laser diode is easily damaged by static electricity.
Carefully check static electricity and electric leak of the measuring
instrument.
Is SLED control signal output from pin 58 of IC1 to pin 23 of IC2?
No
Check SLED control signal line between IC1 and IC2
(Refer Figure 1)
Yes
Is SPIN control signal output from pin 57 of IC1 to pin 4 of IC2?
No
Check SPIN control signal line between IC1 and IC2
(Refer Figure 1)
Yes
Yes
Is Tracking control signal output from pin 42 of IC1 to pin 26
of IC2?
No
Check Tracking control signal line between IC1 and IC2
(Refer Figure 1)
• “No Disc” is displayed during CD playback (when DVD is playable) ... When CD laser does not light up.
Is control signal output from pin 19 of IC1?
Check signal line between IC1 and Q3.
Yes
Yes
Yes
Is voltage of 3.3V applied to the emitter of Q3?
Check 3.3V line.
Is voltage of approx. 1.9 V supplied to pin 6 of CNP1?
Check around Q3.
Check connection of optical pickup cables.
If no abnormality is detected, replace optical pickup mechanism
unit.
Note: The laser diode is easily damaged by static electricity.
Carefully check static electricity and electric leak of the measuring
instrument.
Содержание HT-DV40H
Страница 13: ...HT DV40H 2 6 MEMO ...
Страница 14: ...HT DV40H 4 1 CHAPTER 4 DIAGRAM 1 Main Block Diagrams TP1 TO DVD PWB 1 2 3 4 Figure 4 1 MAIN BLOCK DIAGRAM 1 2 ...
Страница 15: ...HT DV40H 4 2 IC701 IXA161AW00 PR PB Y S01 Figure 4 2 MAIN BLOCK DIAGRAM 2 2 ...
Страница 18: ...HT DV40H 4 5 3 Power Block Diagrams AC SUPPLY 220 240V 50Hz Figure 4 5 POWER BLOCK DIAGRAM 1 2 ...
Страница 19: ...HT DV40H 4 6 Figure 4 6 POWER BLOCK DIAGRAM 2 2 ...
Страница 30: ...HT DV40H 5 11 MEMO ...
Страница 33: ...HT DV40H 6 3 Figure 6 2 MAIN SCHEMATIC DIAGRAM 2 8 B2 TO DVD PWB C CNP14 4700pF 50V 4700pF 50V 7 8 9 10 11 12 ...
Страница 34: ...HT DV40H 6 4 Figure 6 3 MAIN SCHEMATIC DIAGRAM 3 8 TO SUBWOOFER PWB D BI402 13 14 15 16 17 18 ...
Страница 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 ...
Страница 36: ...HT DV40H 6 6 Figure 6 5 MAIN SCHEMATIC DIAGRAM 5 8 AZ4558CME JP826 7 8 9 10 11 12 ...
Страница 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 ...
Страница 39: ...HT DV40H 6 9 Figure 6 8 MAIN SCHEMATIC DIAGRAM 8 8 SPEAKER TERMINAL 7 8 9 10 11 12 ...
Страница 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 ...
Страница 41: ...HT DV40H 6 11 MEMO ...
Страница 45: ...HT DV40H 6 15 Figure 6 13 DISPLAY SCHEMATIC DIAGRAM 2 2 7 8 9 10 11 12 ...
Страница 47: ...HT DV40H 6 17 MEMO ...
Страница 48: ...HT DV40H 6 18 Figure 6 15 DVD SCHEMATIC DIAGRAM 1 8 TO DVD MECHA MOTOR 5 1 2 A B C D E F G H 1 2 3 4 5 6 ...
Страница 49: ...HT DV40H 6 19 Figure 6 16 DVD SCHEMATIC DIAGRAM 2 8 7 8 9 10 11 12 ...
Страница 52: ...HT DV40H 6 22 Figure 6 19 DVD SCHEMATIC DIAGRAM 5 8 7 8 9 10 11 12 ...
Страница 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 ...
Страница 56: ...HT DV40H 6 26 Figure 6 23 SUBWOOFER SCHEMATIC DIAGRAM 1 2 FROM MAIN PWB A BI402 A B C D E F G H 1 2 3 4 5 6 ...
Страница 67: ...HT DV40H 6 37 Figure 6 34 WIRING SIDE OF POWER PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 71: ...HT DV40H 6 41 Figure 6 38 WIRING SIDE OF DISPLAY PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 156: ...HT DV40H 21 12 SPEAKER BOX PARTS FRONT L CH R CH WOOFER SP1 2 WOOFER SP3 4 TWEETER SP5 6 SP5 6 SP3 4 SP1 2 ...
Страница 158: ...HT DV40H 23 13 SPEAKER BOX PARTS SUBWOOFER 906 912 x 4 901 907 903 908 909 908 909 905 x 4 913 x 8 SP1 910 911 902 904 ...