Service manual

ManualsBrandsSharp ManualsDVD VCR ComboDV-RW370X

DV-NC55U/C/M

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 CN801?

CN801 3PIN AMCLK

CN801 4PIN ABCLK

CN801 5PIN ALRCLK

CN801 6PIN AOUT0

Check the main unit. (IC601 periphery circuit.)

Check the line between the pins of main unit

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

Yes

Sound do not operate normally.

Are the digital audio interface signals inputted

to the pins of IC6001?

IC6001 5PIN AMCLK

IC6001 3PIN ABCLK

IC6001 1PIN ALRCLK

IC6001 2PIN AOUT0

Check the PC 3.3V line and PC 5V line.

Is 3.3V applied to the pin(7) and 5.5V applied to the

pins(10), (15) and (19) of the IC6001?

Are the audio interface signals outputted to the

pins of IC6001?

IC6001 16PIN L OUT

IC6001 13PIN R OUT

Check or replace IC6001.

Yes

Check the PC 9V line.

Is 9V applied to the pin(8) of IC6004?

Check or replace IC6004.

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

Check the main unit. (IC504 periphery circuit.)

Check the line between the pins of main unit

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

Yes

Are the audio interface signals inputted to the

pins of IC6004?

IC6004 3PIN L OUT

IC6004 5PIN R OUT

Check the line between the pins of IC6001 and the

pins of IC6004.

IC6001 16PIN → IC6004 3PIN L OUT

IC6001 13PIN → IC6004 5PIN R OUT

Are the audio interface signals outputted to the

pins of IC6004?

IC6004 1PIN L OUT

IC6004 4PIN R OUT

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

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Check the DVD-H line and

Q6010.

Replace IC6010.

Yes

Is 9V applied to the pin(16) of IC6010?

Are the audio interface signals outputted to the

pins of IC6010?

IC6010 15PIN L OUT

IC6010 14PIN R OUT

Are the pins(9), (10) and (11) of IC6010 on "L" level?

Yes

Are the audio interface signals inputted to the pins

of IC6010?

IC6010 2PIN L OUT

IC6010 12PIN R OUT

Check the line between the pins of IC6001 and the

pins of IC6004 and the sound mute periphery

circuit.(Q6007-8.)

IC6004 1PIN → IC6010 2PIN L OUT

IC6004 4PIN → IC6010 12PIN R OUT

Are the audio interface signals inputted to the pins

of IC6011?

IC6011 3PIN L OUT

IC6011 5PIN R OUT

Check the line between the pins of IC6010 and the

pins of IC6011.

IC6010 15PIN → IC6011 3PIN L OUT

IC6010 14PIN → IC6011 5PIN R OUT

Is 9V applied to the pin(8) of IC6011?

Replace IC6011.

Yes

Are the audio interface signals outputted to the

pins of IC6011?

IC6011 1PIN L OUT

IC6011 7PIN R OUT

Are the audio signals output to the specific

outputted terminals?

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(1) of IC6011 and the AUDIO

OUT (L) terminal (J1202).

Check the AUDIO OUT (R) terminal (J1202) and the

line between the pin(7) of IC6011 and the AUDIO

OUT (R) terminal (J1202).

Are the audio signals output to the specific

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 (J1204)?

Check the DVDAUDIO OUT (L) terminal (J1204)

and the line between the pin(16) of IC6001 and the

DVD AUDIO OUT (L) terminal (J1204).

Check the DVDAUDIO OUT (R) terminal (J1204)

and the line between the pin(13) of IC6001 and the

DVD AUDIO OUT (R) terminal (J1204).

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