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Model
STR-DE675
Pages
45
Size
15.03 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-de675.pdf
Date

Sony STR-DE675 Service Manual ▷ View online

8
STR-DE675
DSP TEST  MODE
* DSP tests are performed.
* Procedure :
1. While depressing the  LEVEL  and  CD  buttons simultaneously,
press the power  ?/1  Button to turn on the main power.
2. Press the   NAME  button.
3. Select the item by pressing Cursor button ( <  or  >  ).
4. Select the function by turning Jog dial if selection is necessary.
Items
SWAP
DSP communication
Bass Management
Main Speaker cut off Freq.
LFE cut off Freq.
Co-ef. Read Address
Co-ef. Read Data
Co-ef. Write Address
Co-ef. Write Data
SRAM
Remark
Selection of setting
output channels
Checking communication
between DSP and microcom
Checking communication
between DSP and SRAM
Description
Normal channel output
Left input
t Front Left, Surround Left, Center channel output
Right input t Front Right, Surround Right, Sub Woofer channel output
Left input
t Center channel output
Right input t Sub Woofer channel output
Left input
t Surround Left channel output
Right input t Surround Right channel output
When this item is selected the message will be displayed “ OK ” if the
checking is correct. “ ERROR ” will be displayed in a case of an error.
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
“ RAMC. OFF ” will be displayed in a case of no checking.
By turning Jog dial “ RAMC. EXE ” will be displayed during the
checking.
After a while “ RAMC. PASS ” will be displayed if the checking is good.
“ RAMC. NG ” will be displayed if an error occurs.
Function
NORM
ALL
C SW
SLSR
OFF
ON
9
9
STR-DE675
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
For schematic diagrams.
Note:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
%
: indicates tolerance.
f
: internal component.
2
: nonflammable resistor.
1
: fusible resistor.
C
: panel designation.
A
: B+ Line.
B
: B– Line.
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD (ANALOG)
c
: DVD (DIGITAL)
• Abbreviation
CND : Canadian model
MY
: Malaysia model
SP
: Singapore model
TW
: Taiwan model
KR
: Korea model
MX
: Mexican model
AR
: Argentina model
CH
: Chinese model
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark 
0
 or dotted line with mark
0
 are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 
0
  sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
• Waveform
DIGITAL Board
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
1
 IC1101 
wa
 (XOUT)
 
4.4Vp-p
12.288MHz
2
 IC1201 
9
 
(MCLK)
3.3Vp-p
13.3MHz
3
 IC1301 
qf
 (XO)
2.2Vp-p
4.3MHz
AC SEL board (E model)
IMPEDANCE SELECT board (US, Canadian model)
VIDEO board 
DIGITAL board 
TUNER UNIT
MAIN board
JOG board
DISPLAY board
HEADPHONE board
POWER SWITCH board
STBY board
S-VIDEO board  
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
a
: Through hole.
f
: internal component.
: Pattern from the side which enables seeing.
4
 IC1601 
id
 (XI)
2.8Vp-p
20MHz
Ver 1.2  2003.05
10
10
STR-DE675
3-2. BLOCK DIAGRAMS – MAIN SECTION –
AUDIO IN
AUDIO IN
AUDIO IN
AUDIO IN
MULTI
CH IN
FRONT
SURROUND
CENTER
SUB WOOFER
J401
PROC.
IC201
L IN9
2
L REC3
67
L IN7
71
L IN6
70
L REC1
61
L IN1
62
51
L OUT
L IN5
69
47
SL OUT
39
C OUT
35
SW OUT
MUTING
Q361
DATA
20
CLOCK
21
LATCH
22
MUTING
Q362
MUTING
Q363
MUTING
Q364
15
CLK
16
CE
14
DATA
SYSTEM CONTROL
IC1601(2/3)
J404
DVD/LD
IN
J1101
IR LINK
DET
IC1104
3
5
6
2
IC1102
DIGITAL AUDIO
I/F RECEIVER
IC1101
L
DIN2
5
DIN0
3
DO
35
DI
36
CLK
38
CE
37
ERROR
34
XSTATE
17
XMODE
48
13
CK OUT
14
BCK
15
LRCK
16
DATAO
IC1102
X1101
12.288MHz
AUDIO DSP
IC1201
KFSI0
22
SDI2
30
HCLK
34
HCS
36
HACN
32
PM
113
BST
56
XRST
2
23
SDO1
24
SDO2
25
SDO3
BCKI2
29
LRCK2
28
IC1202
SRAM
AUDIO CODEC
IC1501
MCLK
39
CDT1
43
CCLK
42
CS
41
PD
17
SMUTE
3
27
L OUT1
BCK
4
LRCK
5
SDTO
9
SDTI1
6
SDTI2
7
SDTI3
8
25
L OUT2
23
L OUT3
24
R OUT3
LIN+
30
LIN-
29
2
1
IC1502
6
7
IC1502
ANALOG SOUND
L IN2
63
AL IN
11
SL
13
16
15
AL OUT
9
DL IN
27
29
31
32
ASL IN
ASW IN
AC IN
SL
C
SW
DSL IN
DC IN
DSW IN
A
98 97 95 96 99 100
94
1
DO
DI
CLK
CE
ERROR
XSTATE
CKSEL1
DATA0
20
HCLK
4
HCS
5
HACN
7
PM
3
BST
6
XRST
10
CDT1
12
SCL
13
CS
8
PD
9
SMUTE
24
ANA/DIG
MUTING
CONT
Q1601,1602
21
F.MUTING
MUTING
SWITCH
Q379
49
MD0
50
MD1
51
MD2
28
SP SW/FLASH 1
27
FLASH 2
MD0
VDD
MD2
FLASH 1
FLASH 2
RESET
+3.3V
CNS3
B
J403
J402
CD
AUX
MD/TAPE
DVD/LD
TV/SAT
AUDIO OUT
IR LINK
DET
IC1105
TV/SAT
IN
DIN1
4
IR LINK
DET
IC1106
MD/TAPE
IN
IR LINK
DET
IC1107
MD/TAPE
OUT
DOUT
2
DVD/LD
IN
• Signal Path
• R-CH is omitted due to same as L-CH.
: FM
: CD(ANALOG)
: DVD (DIGITAL)
5
6
7
IC1103
SELECTOR
7
OPTICAL IN SELECT
22
21
XIN
XOUT
93
XMODE
CKSEL1
47
GP9
68
HD OUT
35
HD IN
33
2
GP9
18
HD OUT
19
HD IN
9
MCLK1
12
MCLK2
X1201
13.5MHz
14
SCK OUT
20
BCKO1
19
LRCKO
18
SDI1
24
AUDIO
GP8
69
EXLOCK
59
L IN10
3
L IN8
1
S139
SPEAKERS
FLASH
PROGRAMMING
92
TUNER UNIT
FM
75 
COAXIAL
AM
R-CH
DATA
DO
CLOCK
CE
STEREO
TUNED
MUTING
FM
AM
DET OUT
R CH
L CH
2
4
14
16
13
X1301
4.33MHz
RDS
IC1301
AEP,UK MODEL ONLY
SYSTEM CONTROL.
IC1601(1/3)
DO
76
J200
V1 OUT
15
V1 IN
13
M OUT
1
14
SW1
VIDEO SELECT
IC103
VIDEO OUT
VIDEO OUT
VIDEO 1
MONITOR
— TM301 —
J201
TV
5
LD
3
V2 IN
9
DVD/LD
VIDEO 2
VIDEO 1
VIDEO 1
VIDEO 1
VIDEO 2
CTRL A1 II
VIDEO IN
VIDEO IN
VIDEO IN
VIDEO IN
S VIDEO IN
S VIDEO IN
S VIDEO IN
TV/SAT
3
1
2
IC103
IC1603
10
SW2
6
4
5
IC1603
4
SW3
8
9
10
IC1603
6
SW4
11
12
13
IC1603
2
SW5
TV/SAT
DVD/LD
J1802
J1803(1/2)
Y
C
Y
C
Y
C
VIN1
12
Y SWITCH
IC1802
5
VOUT2
VIN3
1
VIN 2
3
2
SW1
13
SW2
11
MUTING1
4
MUTING2
10
VOUT1
JR1810
JR1807
JR1808
VIN1
12
C SWITCH
IC1801
5
VOUT2
VIN3
1
VIN 2
3
2
SW1
13
SW2
11
MUTING1
4
MUTING2
10
VOUT1
S VIDEO OUT
S VIDEO OUT
MONITOR
J1803(2/2)
J1804
Y
C
Y
C
SDATA
86
SCLK
78
SLATCH
87
STEREO
73
TUNED
74
MUTING
75
RDS DATA
53
RDS CLK
52
CONTROL A1 IN
65
CONTROL A1 OUT
64
MUTING2
91
MUTING1
90
S2
89
S1
88
BUFFER
Q1607
J1801
US, Canadian, Mexican models
IN
OUT
IN
IN
COAXIAL
OPTICAL
DIGITAL
ANTENNA
+5V
11
11
STR-DE675
– DISPLAY/POWER SECTION –
RESET
Q1604,1605
IN2
8
12
+V OUT2
POWER AMP
IC701
9
NF2
LIMITER
Q701
11
-V OUT2
LIMITER
Q702
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
AF POWER
PROTECT
Q740
IN1
6
2
+V OUT1
5
NF1
LIMITER
Q651
3
-V OUT1
LIMITER
Q652
BOOSTER
Q653
BOOSTER
Q654
CURRENT
DETECT
Q655,656
IN+
1
6
+V OUT
POWER AMP
IC501
2
IN-
LIMITER
Q501
5
-V OUT
LIMITER
Q502
BOOSTER
Q503
BOOSTER
Q504
CURRENT
DETECT
Q505,506
D721
PROTECT
SWITCH
Q722,723,725
RELAY
DRIVE
Q790
RY791
RELAY
DRIVE
Q710
RY701
D731
RELAY
DRIVE
Q610
RY601
D733
RELAY
DRIVE
Q550
RY501
D734
IC401
5
7
RELAY
DRIVE
Q560
RY560
L
R
SR
SL
C
R-CH
R-CH
R-CH
PHONES
TM601
TM602
AUDIO
OUT
J405
67
PROTECT
68
HEADPHONE RY
72
FRONT RY
70
REAR RY
71
CENTER RY
69
WOOFER RY
LED DRIVE
Q100-105
RV102
ENCODER
3
1
VOL+
60
VOL-
59
POWER KEY
56
?/1
S138
77
RESET
47
STOP
54
SIRCS
REMOTE
CONTROL
RECEIVER
2
1
IC102
POWER
CONTROL
IC1605
5
8
3
6
+5.6V REG
Q1606
D1911
D910-913
AC
IN
T902
RY901
D915
D914
RELAY
DRIVE
Q901
D820-823
23
VCC5
84
VCC3
-5V
REG
3
2
+5V
REG
3
1
-7V
REG
3
2
+7V
REG
1
3
AUDIO
+7V
VIDEO
+5V
VIDEO
-5V
IC801
IC802
IC807
IC804
POWER RY
66
RELAY
+B
D1901-1904
T1
240V
220V
120V
0V
VOLTAGE
SELECTOR
E MODEL ONLY
S901
82
83
X0
X1
X1601
20.0MHz
FL1
FL2
L
SL
SL
C
SW
A
MUTING
1
POWER
MUTING
Q747,748
22
AC MUTING
J791
FLUORESCENT
INDICATOR TUBE
FL101
61
DIN
62
CLK
63
STB
7
DIN
8
CLK
9
STB
14 29
SEG1-16
42 31
GRID1-12
FL1
FL2
2
LEVEL LED
3
NAME LED
1
SUR LED
4
SETUP LED
LED DRIVE
IC100
D106-109
40
MULTI CH LED
32
AFD LED
31
2CH LED
30
MODE LED
25
DCS LED
FUNCTION
KEY
AD0
38
S101-107
S100-117
FUNCTION
KEY
AD1
39
FUNCTION
KEY
AD2
40
S118-125
S126
FUNCTION
KEY
AD3
41
S128-137
B
RESET
JW2003
JW2001
SYSTEM CONTROL
IC1601(3/3)
• Signal Path
• R-CH is omitted due to same as L-CH
: FM
: CD(ANALOG)
: DVD (DIGITAL)
AF POWER
PROTECT
Q640
AF POWER
PROTECT
Q540
IC601
2
1
FRONT
SURROUND
CENTER
IC601
5
7
26
HP DETECT
BUFFER
IC101
D100-105
29
EQ LED
AEP,UK, 
Argentina MODEL
RV101
ENCODER
3
1
JOG+
58
JOG-
57
35
AVCC
BUFFER
Q1603
+3.3V
REG
3
1
IC1904
AUDIO
-7V
D899
D898
+12V
REG
3
1
TUNER
+12V
IC806
T901
+3.3V REG
Q471
+3.3V
REG
3
1
IC803
TUNER
+3.3V
+3.3V
F901
JW903
JW902
US,CND,E,
TW,MX,CH
AEP,UK,MY,
SP,AR
F902
AC
OUTLET
J911
F904
D802
4
8
IMPEDANCE
SELECTOR
S902
US,CND MODEL
D811
D810
+B
-B
-B SW
Q691,692
-30V REG
Q801
FL101
-30V
POWER AMP
-B
+3.3V
REG
3
1
IC1903
+5V
T999
+2.5V
REG
3
1
IC1902
+2.5V
+3.3V
REG
3
1
IC1901
+3.3V
+5V
REG
3
1
IC1503
AUDIO
+5V
SPEAKERS
SUB
WOOFER
JOG
DIAL
MASTER
VOLUME
Ver 1.2  2003.05
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