Read Sharp DV-NC70H (serv.man5) Service Manual online
62
DV-NC65H/S
DV-NC70H
DV-NC70H
Is the E-E signal applied to the pin(4) of IC2003?
No
No
No
No
Check the DVD-(H) line.
No
Yes
Yes
Yes
Check the VIDEO OUT terminal (J1202) and the
line between the pin(2) of IC2003 and the VIDEO
OUT terminal (J1202).
Check the S-OUT terminal (J1201) and the line
between the pin(28) of IC2701 and the S-OUT
terminal (J1201).
Check the S-OUT terminal (J1201) and the line
between the pin(33) of IC2701 and the S-OUT
terminal (J1201).
Check line between pin(31) of IC2701 and pin(4) of
IC2003.
Is 5V applied to the pin(3) of IC2003?
Are the DVD-(H) at the pin(1) of IC2003 on "H" level?
*1
*2
No
No
No
• DVD OUT,
VCR/DVD OUT
output terminal:
Are the video signals shown above outputted into
the pins of output terminal?
Are the composite video signals outputted to the
VIDEO OUT terminal (J1202)?
Are the luminance signals outputted to the
S-OUT terminal (J1201)?
Are the chroma signals outputted to the
S-OUT terminal (J1201)?
• LINE1 output terminal:
Are the chroma or R signal, G signal, B signal
inputted the pin(6) of IC2502, IC2503 and IC2504?
Are the chroma or R signal, G signal, B signal
outputted to the pin(2) of IC2502, IC2503 and IC2504?
Are the chroma or R signal, G signal, B signal
outputted to the LINE1 output terminal?
Check the line between IC2701 and IC2502,
IC2503, IC2504.
Check the peripheral circuit of IC2502, IC2503 and
IC2504. Check the DVD-(H) line.
Check the LINE1 output terminal (SC2501) and
the line between the pin(2) of IC2502~IC2504 and
LINE1 output terminal.
No
No
No
Are the luminance or composite video signal
inputted the pin(7) of IC2501?
Are the luminance or composite video signal
outputted to the pin(25) of IC2501?
Are the luminance or composite video signal
outputted to the LINE1 output terminal?
• Check the line between the pin(28) or (31) of
IC2701 and the pin(7) of IC2501.
• Check IC2706 (composite or luminance signal
selector).
Check the peripheral circuit of IC2501.
Check the LINE1 output terminal (SC2501) and
the line between the pin(25) of IC2501 and
LINE1 output terminal.
Yes
Yes
Yes
Yes
FLOW CHART NO.10
Set the disc on the disc tray.
Are the digital audio interface signals outputted
to the pins of main unit connector CN3202?
CN3202
9pin L OUT
CN3202 11pin R OUT
Check the main unit. (IC3801, IC3601)
Check the line between the pins of main unit
connector CN2701 and the pins of IC6004.
CN2701 9pin
→
IC6004 3pin L OUT
CN2701 11pin
→
IC6004 5pin R OUT
No
No
Yes
Yes
Yes
Yes
Sound do not oper
ate nor
mally
.
Are the digital audio interface signals inputted
to the pins of IC6004?
IC6004 3pin L OUT
IC6004 5pin R OUT
Yes
No
Are the audio interface signals outputted to the
pins of IC6004?
IC6004 1pin L OUT
IC6004 7pin R OUT
Check the PC 9V line.
Check or replace IC6004.
Is 9V applied to the pin(8) of IC6004?
No
No audio from Hifi E-E (VCR). Check this item.
Are the audio signals outputted to the specific
output terminals?
Is the DVD audio signal outputted to the
AUDIO OUT terminal (J1202), LINE1 output terminal
(SC2501)?
No
No
No
Check the line between the pins of IC6004 and the
pins of IC651, audio mute (Q6007~6008).
IC6004 1pin
→
IC651 3pin L OUT
IC6004 7pin
→
IC651 1pin R OUT
No
Yes
Are the audio signals outputted to the specific
output terminals?
Is the DVD audio signal (L) outputted to the DVD
AUDIO OUT (L) terminal (J1205)?
Is the DVD audio signal (R) outputted to the DVD
AUDIO OUT (R) terminal (J1205)?
Check the DVD AUDIO OUT (L) terminal (J1205)
and the line between the pin(1) of IC6004 and the
DVD AUDIO OUT (L) terminal (J1205).
Check the DVD AUDIO OUT (R) terminal (J1205)
and the line between the pin(7) of IC6004 and the
DVD AUDIO OUT (R) terminal (J1205).
Are the audio interface signals inputted to the
pins of IC651?
IC651 3pin L OUT
IC651 1pin R OUT
Click on the first or last page to see other DV-NC70H (serv.man5) service manuals if exist.