Sony STR-DE375 Service Manual ▷ View online
8
STR-DE375
For schematic diagrams.
Note:
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.
and tantalums.
• All resistors are in
Ω
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
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
• Abbreviation
CND : Canadian model
MY
MY
: Malaysia model
SP
: Singapore model
AR
: Argentina model
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark
The components identified by
mark
!
or dotted line with mark
!
are critical for safety.
Replace only with part number
specified.
specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ne les remplacer que par une
pièce portant le numéro spécifié.
For printed wiring boards.
Note:
Note:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
9
9
STR-DE375
3-2. BLOCK DIAGRAM
TUNER UNIT
RESET
Q201,202
Q659
• Signal Path
• RCH is omitted due to same as LCH.
: FM
: CD
FM
AM
R-CH
S DATA
PLL DATA
S CLK
S CE
SIGNAL
STEREO
AUTO STOP
T MUTE
S DATA
DATA OUT
S CLK
SLAT
SIGNAL
STEREO
TUNED
T MUTE
FM
AM DET OUT
R OUT
L OUT
CD IN
MD/TAPE OUT
MD/TAPE IN
VIDEO/AUDIO OUT
VIDEO/AUDIO IN
DVD/
MULTI CH
FRONT
SURROUND
CENTER
WOOFER
SUB
J501
J401,402
RT IN
61
FC R IN
34
FC SR IN
32
FC C IN
62
DATA
52
DOLBY
SURROUND PROCESSOR
IC202
16
L OUT
CLK
53
ENABLE
51
2
18
SR OUT
10
C OUT
DATA
CLK
4
14
16
13
X1
4.33MHz
RDS
IC1
AEP,UK MODELS
AUDIO SELECT
IC201
IN F2
66
IN A2
71
REC OUT 2A
61
IN B2
70
IN G2
63
SW CH N IN
27
D OUT2
59
49
L CH OUT
REC OUT 2B
61
43
SL CH OUT
37
C CH OUT
28
SW CH OUT
MUTE
Q361
SEL OUT2
60
T IN2
58
SL CH N IN
44
DATA
32
CLOCK
31
LATCH
33
SL CH D IN
45
C CH N IN
38
C CH D IN
39
DATA
CLOCK
S CE
MUTE
Q362
MUTE
Q363
MUTE
Q364
IN1
6
2
+V OUT1
POWER AMP
IC701
5
NF1
LIMITER
Q701
3
-V OUT1
LIMITER
Q702
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
OVER LOAD
DETECT
Q708,709
IN2
8
12
+V OUT2
9
NF2
LIMITER
Q651
11
-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
OVER LOAD
DETECT
Q507,509
OVER LOAD
DETECT
Q657,658
Q707
D706
D606
D506
D721
PROTECT
SWITCH
Q722,723,725
RELAY
DRIVE
Q791
RY791
RELAY
DRIVE
Q730
RY710
D731
RELAY
DRIVE
Q610
RY610
D735
RELAY
DRIVE
Q550
RY510
D734
IC401
3
1
RELAY
DRIVE
Q470
RY470
D736
L
R
SR
SL
C
R-CH
R-CH
SPEAKERS
FRONT
SPEAKERS
SURROUND
SPEAKERS
CENTER
TM601
TM602
SUB WOOFER
AUDIO OUT
J403
21
AUTO STOP
22
T MUTE
23
STEREO IN
28
SIGNAL
24
PLL DATA
19
S DATA
18
S CLK
20
S CE
38
RDS CLK IN
15
RDS DATA
8
S CLK
9
S CE
17
S CE
7
S DATA
59
FUNC MUTE
47
PROTECT
AUTO STOP
T MUTE
STEREO
SIGNAL
PLL DATA
S DATA
S CLK
S CE
CLOCK
S CE
DATA
54
H/P RY
61
HP SW
53
FRONT RY
51
REAR RY
52
CTR RY
55
WOOFER RY
100 91
33 30
A/D1
A/D4
FUNCTION
KEY
S202-229,231-236
S FIELD LED
68
SURR LED
66
LEVEL LED
65
NAME LED
64
SETUP LED
63
LED DRIVE
Q210-213,215
D210-213,D215
SYSTEM CONTROL
IC103
RV201
ENCODER
3
1
ENCODER
50
ENCODER
49
SYS POWER
56
MASTER
VOLUME
VOLUME
?/1
SYSTEM
POWER
S200
90 80
78 75
.
DIG1-10
S1-S15
FLUORESCENT
INDICATOR TUBE
F1
F2
FL201
10
RESET
39
STOP
26
SIRCS
REMOTE
CONTROL
RECEIVER
2
1
IC203
POWER
CONTROL
IC950
5
8
3
6
+5.6V REG
Q951
D201
D202
D910-913
AC
IN
IN
T902
RY901
D915
D914
RELAY
DRIVE
Q901
CNP901
D820-823
46
VDD
34
VDD
16
VDD
1
VDD
-7V
REG
3
2
+7V
REG
3
1
+5V
REG
3
1
+5V
REG
3
1
+9V
REG
3
1
DOLBY SURR
+9V
DISPLAY
+5V(A)
AUDIO
+7V
AUDIO
-7V
TUNER,RDS
AUDIO
+5V(B)
IC805
IC803
IC804
IC807
IC802
POWER RY
48
RELAY
+B
+12V
REG
3
1
POWER AMP
+12V
IC801
-24V REG
Q801
FL201
-24V
-B SW
Q715
POWER AMP
-B
D824
D802
T901
POWER AMP
+B
240V
220V
120V
0V
VOLTAGE
SELECTOR
E MODEL
S901
12
11
X1
X2
X201
5.00MHz
F1
F2
R-CH
PHONES
J200
10
10
STR-DE375
3-3. PRINTED WIRING BOARD – MAIN SECTION –
IC 1
IC 805
IC 202
IC 201
IC 401
IC 807
IC 701
IC 501
IC 801
IC 804
IC 803
IC 802
IC 702
C 416
R 408
C 417
TO
TUNER
UNIT
TO
DISPLAY
BOARD
(Page 1
4)
C 467
C 468
• Semiconductor Location
Ref. No.
Location
Ref. No.
Location
D301
D-1
D470
C-8
D505
F-4
D506
F-4
D508
F-3
D510
C-10
D605
F-8
D606
F-8
D607
F-7
D608
F-8
D610
C-9
D627
F-11
D706
F-6
D710
C-11
D721
E-11
D722
D-11
D725
G-10
D726
F-10
Ref. No.
Location
D727
F-5
D728
F-6
D731
C-10
D732
D-11
D734
C-10
D735
C-9
D736
C-8
D757
F-9
D791
F-12
D801
E-13
D802
C-13
D804
E-13
D820
E-12
D821
E-13
D822
E-13
D823
D-12
D824
D-12
D825
D-13
IC1
C-1
IC201
D-5
IC202
D-3
IC401
C-7
IC501
E-5
IC701
E-7
IC702
E-8
IC801
D-11
IC802
D-12
IC803
D-12
IC804
E-12
IC805
B-2
IC807
C-8
Q361
D-7
Q362
D-8
Q363
D-8
Q364
D-9
Q365
D-7
Q366
D-8
Q470
C-8
Q501
F-2
Q502
G-3
Q503
G-3
Q504
G-4
Q505
F-3
Q506
F-3
Q507
F-4
Q509
F-4
Q550
C-10
Q601
F-10
Q602
G-11
Q603
G-10
Q604
G-11
Q605
G-12
Q606
F-11
Ref. No.
Location
Q610
C-9
Q651
F-6
Q652
G-7
Q653
G-7
Q654
G-8
Q655
F-7
Q656
G-8
Q657
F-8
Q658
F-8
Q659
F-8
Q701
F-4
Q702
G-5
Q703
G-5
Q704
G-6
Q705
F-6
Q706
F-5
Q707
F-6
Q708
F-6
Q709
F-6
Q715
E-10
Q722
D-11
Q723
D-11
Q725
D-11
Q730
C-11
Q751
F-9
Q752
G-9
Q753
G-9
Q754
G-10
Q755
E-9
Q756
F-9
Q757
F-10
Q758
F-10
Q759
F-10
Q791
G-12
Q801
F-13
Ref. No.
Location
Ref. No.
Location
11
11
STR-DE375
3-4. SCHEMATIC DIAGRAM – MAIN SECTION(1/3) –
IC B/D
IC B/D
IC B/D
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