Read Sharp DV-HR300H (serv.man8) Service Manual online
21
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Is audio signal input to IC2601 pins
15, 16, 10, 1
1, 36, 37, 33 and 34?
FLOW CHART No.12
Sound E-E is not output.
1
In external input mode
■
Check lines between rear SCAR
T
L1 terminal (SC2601) and IC2601 pins 36/37.
■
Check lines between rear SCAR
T
L2 terminal (SC2602) and IC2601 pins 33/34.
■
Check lines between front audio input terminal (J2702) and IC2601 pins 10/1
1.
2
In U/V tuner mode
Check these: periphery of U/V tuner (TU1501), line between pin 22 of U/V tuner and
IC1701 pin 2, periphery of IC1701, and lines between IC1701 pins 30/31 and IC2601
pins 15/16.
NO
Is audio signal input to each pin of IC6102?
IC6102 pin 3
AUDIO_L
IN
IC6102 pin 5
AUDIO_R IN
NO
Is audio signal output to each pin of IC2601?
IC2601 pin 39
AUDIO_L
IN
IC2601 pin 40
AUDIO_R IN
Is 12V applied to IC2601 pin 14, and 5V applied to pins
24 and 29?
Check or replace IC2601.
12V
: Check input
A
T14V line to IC2691.
5V
: Check STNDBY
5V line.
NO
YES
YES
YES
NO
Check IIC SCL
and IIC SDA
lines of pins 22 and 21
controlling IC2601.
Check each control signal line.
Check PC_5V (1) line and PC_-5V line.
NO
NO
Check EE_AMCLK line.
NO
Check lines between pins of IC2601 and IC6102.
IC2601 pin 39
→
IC6102 pin 3
AUDIO_L
IN
IC2601 pin 40
→
IC6102 pin 5
AUDIO_R IN
Is audio signal output to pins of main unit
connector CN3001?
CN3001 pin 8
AUD_L_ADIN
CN3001 pin 7
AUD_R_ADIN
NO
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
NO
YES
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
4
NO
NO
YES
Refer to Flow chart No.1
1 "Playback sound is not
output properly".
Check or replace IC3005.
YES
YES
Check IC7506 or peripheral circuits.
4
YES
NO
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_ADA
T
A
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 input 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?
NO
Is 5V applied to IC3005 pin 6, and 3.3V applied to pin
7?
Is EE_AMCLK signal input to IC3005 pin 1
1
?
Check
A_5V line and D_3.3V (1) line.
YES
YES
YES
YES
NO
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
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.
NO
YES
NO
Check IC3003 peripheral circuits or replace IC3003.
Is audio signal input to each pin of IC3003?
IC3003 pin 5
AUD_L_ADIN
IC3003 pin 3
AUD_R_ADIN
NO
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
7?
Check
A_5V line and PC_-5V line.
NO
YES
NO
Check IC3002 peripheral circuits or replace IC3002.
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