Sharp DV-HR300U Service Manual download pdf (Page 22)

DV-HR300U

Is audio signal input to IC6101 pins

1, 2, 4, 5, 11, 12, 14 and 15?

FLOW CHART No.12

Sound E-E is not output.

1In external input mode

■ Check lines between rear audio input 1 terminal (J2401) and IC6101 pins 5/14.

■ Check lines between rear audio input 2 terminal (J2701) and IC2461 pins 3/13

as well as lines between IC2461 pins 4/14 and IC6101 pins 4/11.

■ Check lines between front audio input terminal (J2702) and IC6101 pins 2/15.

2In U/V tuner mode

Check these: periphery of U/V tuner (TU1501), line between pin 15 of U/V tuner

and IC1401 pin 15, periphery of IC1401, and lines between IC1401 pins 24/23

and IC6101 pins 1/12.

Is audio signal input to each pin of IC6102?

IC6102 pin 3 INPUT_L

IC6102 pin 5 INPUT_R

Is audio signal output to each pin of IC6101?

IC6101 pin 3 INPUT_L

IC6101 pin 13 INPUT_R

Is 5V applied to IC6101 pin 16, and -5V applied to pin 7?

Check or replace IC6101.

Check PC_5V (1) line and PC_-5V line.

YES

Are voltages of control signal lines T_A MUTE, AUX2 (H)

and AUX1 (H) of pins 6/9/10 controlling IC6101 normal?

Check each control signal line.

Check PC_5V (1) line and PC_-5V line.

YES

Check EE_AMCLK line.

Check lines between pins of IC6101 and IC6102.

IC6101 pin 3 → IC6102 pin 3 INPUT_L

IC6101 pin 13 → IC6102 pin 5 INPUT_R

Is audio signal output to pins of main unit

connector CN3001?

CN3001 pin 8 AUD_L_ADIN

CN3001 pin 7 AUD_R_ADIN

Check lines between pins of IC6102 and CN3001.

IC6102 pin 1 → S2202 pin 8 → CN3001 pin 8

AUD_L_ADIN

IC6102 pin 7 → S2202 pin 7 → CN3001 pin 7

AUD_R_ADIN

Is audio signal input to each pin of IC3002?

IC3002 pin 13 AUD_L_ADIN

IC3002 pin 3 AUD_R_ADIN

YES

Check lines between pins of CN3001 and IC3002.

CN3001 pin 8 → IC3002 pin 13 AUD_L_ADIN

CN3001 pin 7 → IC3002 pin 3 AUD_R_ADIN

YES

Refer to Flow chart No.11 "Playback sound is not

output properly".

Check or replace IC3005.

YES

Check IC7506 or peripheral circuits.

YES

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

Is audio digital signal output to each pin of IC7506?

IC7506 pin 248 AD_DOUT

IC7506 pin 221 AD_BCK

IC7506 pin 230 AD_LRCK

Is audio digital signal output to each pin of IC3005?

IC3005 pin 9 AD_DOUT

IC3005 pin 12 AD_BCK

IC3005 pin 10 AD_LRCK

Is audio signal output to each pin of IC3005?

IC3005 pin 2 AUD_L_ADIN

IC3005 pin 1 AUD_R_ADIN

ICheck lines between pins of IC3005 and IC7506.

IC3005 pin 9 → IC7506 pin 248 AD_DOUT

IC3005 pin 12 → IC7506 pin 221 AD_BCK

IC3005 pin 10 → IC7506 pin 230 AD_LRCK

YES

Is audio signal output to each pin of IC6102?

IC6102 pin 1 INPUT_L

IC6102 pin 7 INPUT_R

Is 5V applied to IC6102 pin 8, and -5V applied to pin 4?

Is 5V applied to IC3005 pin 6, and 3.3V applied to pin

Is EE_AMCLK signal input to IC3005 pin 11?

Check A_5V line and D_3.3V (1) line.

YES

Check lines between pins of IC3003 and IC3005.

IC3003 pin 7 → IC3005 pin 2 AUD_L_ADIN

IC3003 pin 1 → IC3005 pin 1 AUD_R_ADIN

YES

Is audio signal output to each pin of IC3003?

IC3003 pin 7 AUD_L_ADIN

IC3003 pin 1 AUD_R_ADIN

Is 5V applied to IC3003 pin 8, and -5V applied to pin 4?

Check A_5V line and PC_-5V line.

YES

Check IC3003 peripheral circuits or replace IC3003.

IIs audio signal output to each pin of IC3003?

IC3003 pin 5 AUD_L_ADIN

IC3003 pin 3 AUD_R_ADIN

YES

Check lines between pins of IC3002 and IC3003.

IC3002 pin 14 → IC3003 pin 5 AUD_L_ADIN

IC3002 pin 4 → IC3003 pin 3 AUD_R_ADIN

Is audio signal output to each pin of IC3002?

IC3002 pin 14 AUD_L_ADIN

IC3002 pin 4 AUD_R_ADIN

Is 5V applied to IC3002 pin 16, and -5V applied to pin

Check A_5V line and PC_-5V line.

YES

Check IC3002 peripheral circuits or replace IC3002.

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Sharp DV-HR300U Service Manual Page 22

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