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Sharp DV-HR300U Service Manual Page 21

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21
DV-HR300U
Is drive control of IC7506 working properly?
Is HDD control working properly?
FLOW CHART No.11
Playback sound is not output properly.
NO
Refer to Flow chart No.2 "Drive is not working properly
(communication failure with IC7506)" or Flow chart No.3
"HDD is not working properly (communication failure with
IC7506)".
YES
NO
Is audio digital signal output to each pin of
IC7506?
IC7506 pin 235 154_AMCLK
IC7506 pin 217 154_ABCLK
IC7506 pin 222 154_ALRCK
IC7506 pin 209 154_ADATA
YES
YES
NO
Is 5V applied to IC3009 pin 14?
Check or repair IC3009.
Check A_5V line.
Is audio signal output to each pin of IC3009?
IC3009 pin 11 AUDIO_OUT_L
IC3009 pin 10 AUDIO_OUT_R
YES
NO
YES
Check IC7506 and peripheral circuits.
Check lines between IC6501 pin 1 and AUDIO OUT (L) 1/2
terminals (J2402) as well as AUDIO OUT (L) 1/2 terminals (J2402).
Check lines between IC6501 pin 7 and AUDIO OUT (R) 1/2
terminals (J2402) as well as AUDIO OUT (R) 1/2 terminals (J2402).
NO
Is 5V applied to IC6501 pin 8, and -5V applied to pin 4?
Check IC6501 peripheral circuits or replace IC6501.
Check PC_5V (1) line and PC_-5V line.
Is audio signal output to each pin of IC6501?
IC6501 pin 1 OUT1_L OUT2_L
IC6501 pin 7 OUT1_R OUT2_R
YES
NO
NO
Is audio signal output to each output terminal?
Is audio signal (L) output to AUDIO OUT (L) 1/2
terminals (J2402)?
Is audio signal (R) output to AUDIO OUT (R)
1/2 terminals (J2402)?
NO
YES
NO
Check lines between pins of IC3009 and CN3001.
IC3009 pin 11 → CN3001 pin 11 VOUT_L
IC3009 pin 10 → CN3001 pin 12 VOUT_R
Is audio signal output to pins of main unit
connector CN3001?
CN3001 pin 11 VOUT_L
CN3001 pin 12 VOUT_R
YES
NO
Check lines between pins of CN3001 and IC6501.
CN3001 pin 11 → S2202 pin 11→ IC6501 pin 3 VOUT_L
CN3001 pin 12 → S2202 pin12 → IC6501 pin 5 VOUT_R
Is audio digital signal output to each pin of
IC6501?
IC6501 pin 3 VOUT_L
IC6501 pin 5 VOUT_R
YES
NO
Check lines between pins of IC7506 and IC3009.
IC7506 pin 235 → IC3009 pin 1 154_AMCLK
IC7506 pin 217 → IC3009 pin 2 154_ABCLK
IC7506 pin 222 → IC3009 pin 4 154_ALRCK
IC7506 pin 209 → IC3009 pin 3 154_ADATA
Is audio digital signal output to each pin of
IC3009?
IC3009 pin 1 154_AMCLK
IC3009 pin 2 154_ABCLK
IC3009 pin 4 154_ALRCK
IC3009 pin 3 154_ADATA
YES
NO
Check lines between pins of IC7506 and IC3009.
IC7506 pin 263 → IC3009 pin 8 SPIDAO
IC7506 pin 264 → IC3009 pin 7 SPICLK
IC7506 pin 268 → IC3009 pin 6 DAC1_L
Is system control signal output to each pin of
IC3009?
IC3009 pin 8 SPIDAO
IC3009 pin 7 SPICLK
IC3009 pin 6 DAC1_L
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