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.
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 ...
