Sharp DV-NC55S Service Manual page 42

FLOW CHART NO.10
Sound do not operate normally.
Set the disc on the disc tray.
Yes
Are the digital audio interface signals outputted
to the pins of main unit connector CN801?
CN801 3PIN AMCLK
CN801 4PIN ABCLK
CN801 5PIN ALRCLK
CN801 6PIN AOUT0
Yes
Are the digital audio interface signals inputted
to the pins of IC6001?
IC6001 5PIN AMCLK
IC6001 3PIN ABCLK
IC6001 1PIN ALRCLK
IC6001 2PIN AOUT0
Yes
Are the system control interface signals outputted
to the pins of main unit connector CN801?
CN801 10PIN ADAC DA
CN801 11PIN ADAC CK
CN801 12PIN ADAC L
CN801 16PIN RSTO I
Yes
Are the system control interface signals inputted
to the pins of IC6001?
IC6001 26PIN ADAC DA
IC6001 27PIN ADAC CK
IC6001 28PIN ADAC L
IC6001 22PIN RSTO I
Yes
Are the audio interface signals outputted to the
pins of IC6001?
IC6001 16PIN L OUT
IC6001 13PIN R OUT
Yes
Are the audio interface signals inputted to the
pins of IC6004?
IC6004 3PIN L OUT
IC6004 5PIN R OUT
Yes
Are the audio interface signals outputted to the
pins of IC6004?
IC6004 1PIN L OUT
IC6004 7PIN R OUT
Yes
*1
No
Check the main unit. (IC601 periphery circuit.)
Check the line between the pins of main unit
No
connector CN801 and the pins of IC6001.
CN801 3PIN → IC6001 5PIN AMCLK
CN801 4PIN → IC6001 3PIN ABCLK
CN801 5PIN → IC6001 1PIN ALRCLK
CN801 6PIN → IC6001 2PIN AOUT0
No
Check the main unit. (IC504 periphery circuit.)
Check the line between the pins of main unit
No
connector CN801 and the pins of IC6001.
CN801 10PIN → IC6001 26PIN ADAC DA
CN801 11PIN → IC6001 27PIN ADAC CK
CN801 12PIN → IC6001 28PIN ADAC L
CN801 16PIN → IC6001 22PIN RSTO I
Check the PC 3.3V line and PC 5V line.
No
No
Is 3.3V applied to the pin(7) and 5.5V applied to the
pins(10), (15) and (19) of the IC6001?
Yes
Check or replace IC6001.
Check the line between the pins of IC6001 and the
No
pins of IC6004.
IC6001 16PIN → IC6004 3PIN L OUT
IC6001 13PIN → IC6004 5PIN R OUT
Check the PC 9V line.
No
No
Is 9V applied to the pin(8) of IC6004?
Yes
Check or replace IC6004.
*2
*1
Are the audio interface signals inputted to the pins
of IC6010?
IC6010 2PIN L OUT
IC6010 12PIN R OUT
Yes
Are the audio interface signals outputted to the
pins of IC6010?
IC6010 15PIN L OUT
IC6010 14PIN R OUT
Yes
Are the audio interface signals inputted to the pins
of IC6011?
IC6011 3PIN L OUT
IC6011 5PIN R OUT
Yes
Are the audio interface signals outputted to the
pins of IC6011?
IC6011 1PIN L OUT
IC6011 7PIN R OUT
Yes
Are the audio signals input to the pins of IC2501?
IC2501 2PIN L OUT
IC2501 1PIN R OUT
Yes
Are the audio signals output to the pins of IC2501?
IC2501 42PIN L OUT
IC2501 43PIN R OUT
Yes
Are the audio signals output to the specific
outputted terminals?
No
Is the DVD audio signal (L) output to the
AUDIO OUT (L) terminal (J1202)?
Is the DVD audio signal (R) output to the
AUDIO OUT (R) terminal (J1202)?
Check the AUDIO OUT (L) terminal (J1202) and
the line between the pin(42) of IC2501 and the
AUDIO OUT (L) terminal (J1202).
Check the AUDIO OUT (R) terminal (J1202) and
the line between the pin(43) of IC2501 and the
AUDIO OUT (R) terminal (J1202).
Are the audio signals output to the specific
*3
outputted terminals?
Is the DVD audio signal (L) output to the DVD
AUDIO OUT (L) terminal (J1204)?
Is the DVD audio signal (R) output to the DVD
AUDIO OUT (R) terminal (J1202)?
*2
Check the line between the pins of IC6010 and the
No
pins of IC6004 and the sound mute periphery
circuit.(Q6007-8.)
IC6004 1PIN → IC6010
2PIN L OUT
IC6004 7PIN → IC6010 12PIN R OUT
No
Is 9V applied to the pin(16) of IC6010?
Yes
Are the pins(9), (10) and (11) of IC6010 on "L" level?
Yes No
Replace IC6010. Check the DVD-H line and Q6010.
Check the line between the pins of IC6010 and the
No
pins of IC6011.
IC6010 15PIN → IC6011
3PIN L OUT
IC6010 14PIN → IC6011
5PIN R OUT
No
Is 9V applied to the pin(8) of IC6011?
Yes
Replace IC6011.
Check the line between the pins of IC2501 and the
No
pins of IC6011 and the sound mute periphery circuit
(Q6011-12).
1PIN → IC2501
IC6011 2PIN L OUT
7PIN → IC2501
IC6011 1PIN R OUT
Is 5V and 12V applied to the pins of IC2501?
No
IC2501 PIN(24) & (29)→ AT5V
IC2501 PIN(4) → AT12V
Yes No
Check the AT5V and AT12V line.
Are the ST SCL and ST SDA inputted to the pins
(22) and (21) of IC2501 respectively?
Yes
No
Is DEC A_Mute at pin(9) of IC2501 LOW?
Yes No
Replace IC2501.
Check the DEC A_Mute line between pin(96) of
IC701 and pin(9) of IC2501.
Check the line between the pins of IC701 and the
pins of IC2501
IC701 18PIN → IC2501 22PIN ST SCL
IC701 17PIN → IC2501 21PIN ST SDA
Check the DVD AUDIO OUT (L) terminal (J1204)
No
and the line between the pin(16) of IC6001 and the
DVD AUDIO OUT (L) terminal (J1204).
Check the DVD AUDIO OUT (R) terminal (J1204)
No
and the line between the pin(13) of IC6001 and the
DVD AUDIO OUT (R) terminal (J1204).
*3
No
No
No