Read Sharp DV-HR300H (serv.man8) Service Manual online
20
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Is drive control of IC7506 working properly?
Is HDD control working properly?
FLOW CHART No.1
1
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 I54_AMCLK
IC7506 pin 217 I54_ABCLK
IC7506 pin 222 I54_ALRCK
IC7506 pin 209 I54_ADA
T
A
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 1
1
AUDIO_OUT_L
IC3009 pin 10
AUDIO_OUT_R
YES
NO
YES
Check IC7506 and peripheral circuits.
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
NO
NO
Is audio signal output to each output terminal?
Is audio signal (L) output to
AUDIO OUTPUT(L)
terminal (JC2601)?
Is audio signal (R) output to
AUDIO
OUTPUT(R) terminal (JC2601)?
Is audio signal (L) output to SCAR
T
L1 terminal
(SC2601)?
Is audio signal (R) output to SCAR
T
L1 terminal
(SC2601)?
Check line from IC6501 pin 1 to
AUDIO OUT
terminal
(JC2601) and
AUDIO OUT
terminal (JC2601).
Check line from IC6501 pin 7 to
AUDIO OUT
terminal
(JC2601) and
AUDIO OUT
terminal (JC2601).
Check kine from IC6501 pin 1 to IC2601 pin 2 and line from
IC2601 pin 42 and SCAR
T
L1 (SC2601) terminal.
Check kine from IC6501 pin 7 to IC2601 pin 1 and line from
IC2601 pin 43 and SCAR
T
L1 (SC2601) terminal.
NO
YES
NO
Check lines between pins of IC3009 and CN3001.
IC3009 pin 1
1
→
CN3001 pin 1
1
VOUT_L
IC3009 pin 10
→
CN3001 pin 12 VOUT_R
Is audio signal output to pins of main unit
connector CN3001?
CN3001 pin 1
1
VOUT_L
CN3001 pin 12 VOUT_R
YES
NO
Check lines between pins of CN3001 and IC6501.
CN3001 pin 1
1
→
S2202 pin 1
1
→
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 I54_AMCLK
IC7506 pin 217
→
IC3009 pin 2 I54_ABCLK
IC7506 pin 222
→
IC3009 pin 4 I54_ALRCK
IC7506 pin 209
→
IC3009 pin 3 I54_ADA
T
A
Is audio digital signal output to each pin of
IC3009?
IC3009 pin 1 I54_AMCLK
IC3009 pin 2 I54_ABCLK
IC3009 pin 4 I54_ALRCK
IC3009 pin 3 I54_ADA
T
A
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
NO
12V
: Check input voltage of IC2691
A
T14V
, pin 3 output,
and line of IC2601 pin 14.
5V
: Check STNDBY
5V line.
Is 12V supplied to IC2601 pin 14 and 5V to pins
24 and 29?
YES
NO
Are IIC SCL
and IIC SDA
input to IC2601 pins
22 and 21?
Check IIC SCL
and IIC SDA
lines between
IC501 pins 18 and 17 and IC2601 pins 22 and
21.
Output to IC2601 pins 42 and 43?
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