HT-DV30H
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-DV30H
Страница 11: ...HT DV30H MEMO ...
Страница 12: ...HT DV30H 4 1 CHAPTER 4 DIAGRAM 1 Main Block Diagrams TP1 Figure 4 1 MAIN BLOCK DIAGRAM 1 2 ...
Страница 13: ...HT DV30H 4 2 IC701 IXA161AW00 PR PB Y S01 Figure 4 2 MAIN BLOCK DIAGRAM 2 2 ...
Страница 16: ...HT DV30H 4 5 3 Power Block Diagrams AC SUPPLY 220 240V 50Hz Figure 4 5 POWER BLOCK DIAGRAM 1 2 ...
Страница 17: ...HT DV30H 4 6 DZ957 Q909 Figure 4 6 POWER BLOCK DIAGRAM 2 2 ...
Страница 28: ...HT DV30H 5 11 MEMO ...
Страница 32: ...HT DV30H 6 4 Figure 6 3 MAIN SCHEMATIC DIAGRAM 3 8 13 14 15 16 17 18 ...
Страница 33: ...HT DV30H 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 34: ...HT DV30H 6 6 Figure 6 5 MAIN SCHEMATIC DIAGRAM 5 8 JP826 7 8 9 10 11 12 ...
Страница 36: ...HT DV30H 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 37: ...HT DV30H 6 9 Figure 6 8 MAIN SCHEMATIC DIAGRAM 8 8 SPEAKER TERMINAL 7 8 9 10 11 12 ...
Страница 38: ...HT DV30H 6 10 Figure 6 9 USB SCHEMATIC DIAGRAM BI 706 A B C D E F G H 1 2 3 4 5 6 ...
Страница 39: ...HT DV30H 6 11 MEMO ...
Страница 44: ...HT DV30H 6 16 Figure 6 12 DISPLAY SCHEMATIC DIAGRAM 1 2 TO MAIN PWB A TO SMPS PWB A B C D E F G H 1 2 3 4 5 6 ...
Страница 45: ...HT DV30H 6 17 Figure 6 13 DISPLAY SCHEMATIC DIAGRAM 2 2 7 8 9 10 11 12 ...
Страница 47: ...HT DV30H 6 19 MEMO ...
Страница 48: ...HT DV30H 6 20 Figure 6 15 DVD SCHEMATIC DIAGRAM 1 8 TO DVD MECHA MOTOR A B C D E F G H 1 2 3 4 5 6 ...
Страница 49: ...HT DV30H 6 21 Figure 6 16 DVD SCHEMATIC DIAGRAM 2 8 7 8 9 10 11 12 ...
Страница 52: ...HT DV30H 6 24 Figure 6 19 DVD SCHEMATIC DIAGRAM 5 8 7 8 9 10 11 12 ...
Страница 54: ...HT DV30H 6 26 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 55: ...HT DV30H 6 27 Figure 6 22 DVD SCHEMATIC DIAGRAM 8 8 TO MAIN PWB A TO DIGITAL IN PWB 5 7 8 9 10 11 12 ...
Страница 61: ...HT DV30H 6 33 Figure 6 28 WIRING SIDE OF MAIN PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 65: ...HT DV30H 6 37 Figure 6 32a WIRING SIDE OF POWER PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 69: ...HT DV30H 6 41 Figure 6 32b WIRING SIDE OF POWER PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 73: ...HT DV30H 6 45 Figure 6 36 WIRING SIDE OF DISPLAY PWB BOTTOM VIEW 2 2 7 8 9 10 11 12 ...
Страница 88: ...HT DV30H 8 5 MEMO ...
Страница 107: ...HT DV30H 18 MEMO ...