Sony STR-DB798 Service Manual ▷ View online
STR-DB798
29
29
STR-DB798
D301
C311
IC301
C313
R305
R303
R301
C308
C307
R306
R307
C309
C310
C306
R304
C305
R302
C301
C303
J304
J305
J302
C304
C302
D302
CN301
C201
CN202
CN201
R256
R206
R255
R205
R254
R204
R253
R203
R252
R202
R211
R201
R251
J202
J201
C213
E302
E304
E305
C315
JW301
G2
G1
R207
R208
C212
C214
C211
C215
R220
R219
IC201
1SS133T
0.1
NJM-2595D
10
50V
75
75
75
2200p
47p
75
75
10 50V
10 50V
10
50V
75
47p
75
47p
10 50V
3P
3P
1P
2200p
2200p
1SS133T
10P
2200p
3P
10P
1k
1k
2.2k
2.2k
1k
1k
2.2k
2.2k
1k
1k
1k
1k
1k
6P
6P
100p
0.1
33
33
0.022
0.01
0.022
2200p
1k
1k
TC9273N-014
R1
R2
R3
R4
R5
R6
R7
R1
R2
R3
R4
R5
R6
R7
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
V-SW1
V-SW2
V-SW4
V-SW3
-5V
+5V
VIDEO3
GND
V-MONITOR
(CHASSIS)
(CHASSIS)
(CHASSIS)
DATA
CLK
NC
NC
VIDEO-L
GND
VIDEO-R
+15V
-15V
FUN-LAT
TUNER-L
TUNER-R
V3 R
V3 GND
V3 L
V
ID
EO
3
C
O
M
TV
/D
BS
D
VD
/L
D
V
2 OU
T
V
ID
EO
2
V
1 O
U
T
V
ID
EO
1
CO
M
R
V
D
D
L
V
S
S
G
ND
CLK
L
AT
D
A
T
(CHASSIS)
(CHASSIS)
VIDEO SELECTOR
VIDEO
R
L
R
L
R
L
R
L
R
L
R
L
SELECTOR
AUDIO
VIDEO 1
AUDIO IN
VIDEO 1
AUDIO OUT
VIDEO 2 IN
AUDIO IN
AUDIO OUT
VIDEO 2
AUDIO IN
DVD
AUDIO IN
TV/SAT
VIDEO
MONITOR
TV/SAT
DVD
VIDEO 2
VIDEO 2
VIDEO 1
VIDEO 1
VIDEO OUT
VIDEO IN
VIDEO OUT
VIDEO IN
VIDEO OUT
VIDEO IN
VIDEO IN
MONITOR OUT
6-16. SCHEMATIC DIAGRAM – VIDEO Section –
(Page 38)
(Page 31)
(Page 37)
•
See page 53 for IC Block Diagrams.
STR-DB798
30
30
STR-DB798
6-17. PRINTED WIRING BOARDS – S-VIDEO Section –
C1097
C1088
C1098
R1093
R1096
R1095
R1094
C1096
R1092
C1081
CN1081
EP1086
J1092
CN1091
EP1091
J1086
R1081
IC1081
EB1081
C1089
J1091
JW857
JW858
JW860
JW865
JW866
JW868
JW870
JW880
JW881
JW882
JW883
JW884
JW885
JW886
JW889
JW878
JW899
JW895
JW894
JW859
JW900
JW897
JW898
JW890
JW867
JW872
JW877
JW893
JW862
JW863
JW861
JW856
JW888
JW887
JW850
JW848
JW864
JW873
JW849
JW869
C872
C863
C871
R861
D850
R860
C851
C877
C869
D851
C852
R862
R867
R866
R865
R864
C881
R859
R858
R857
R856
R855
R854
Q851
Q850
IC852
IC851
IC850
D853
D852
CN853
CN851
C890
C879
C878
R863
C867
CN854
R884
C873
C870
C864
C850
C853
C855
C856
C857
C858
C859
C860
RY850
R885
C882
R883
R882
C880
J853
JW855
JW845
JW846
JWH800
JW950
C861
C854
C868
C862
C883
JW801
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
10
1
3
HP-V3 BOARD
1-867-414-
11
(11)
S-VIDEO BOARD
1-867-426-
11
(11)
(CHASSIS)
C
Y
S-VIDEO
VIDEO
L
R
AUDIO
VIDEO 3
INPUT
DIGITAL
OPTICAL
(CHASSIS)
PHONES
1
5
MAIN
BOARD
CN417
11
VIDEO-AU
BOARD
CN202
8
DISPLAY
BOARD
CN1080
10
COMP-V BOARD
CN3801
13
4
1
-1 -2
C
Y
C
Y
C
Y
C
Y
C
Y
C
Y
C
Y
J851
J852
J850
VIDEO
MONITOR
S-VIDEO
OUT
VIDEO 1
S-VIDEO
IN
VIDEO 1
S-VIDEO
OUT
VIDEO 2
S-VIDEO
IN
VIDEO 2
S-VIDEO
OUT
DVD
S-VIDEO
IN
TV/SAT
S-VIDEO
IN
MAIN BOARD
CN408
12
E
E
5
1
1
8
16
9
1
8
16
9
(Page 36)
(Page 28)
(Page 46)
(Page 32)
(Page 36)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
•
Semiconductor
Location
Location
Ref. No. Location
D850
G-10
D851
G-10
D852
C-11
D853
E-9
IC850
E-11
IC851
G-11
IC852
G-9
IC1081
B-7
Q850
D-9
Q851
C-10
STR-DB798
31
31
STR-DB798
C870
R858
R859
C857
C853
C852
R854
R855
R856
R857
C859
C856
C855
C858
R861
R860
C854
C860
R863
C850
C851
R862
C867
C872
C863
C869
D851
D850
CN853
CN854
CN1081
CN1091
R1081
J1092
R1092
R1093
C1098
EP1086
EP1091
IC1081
C1081
R1096
R1095
R1094
C1097
J1091
J851
J852
J850
D852
D853
R867
R866
Q850
Q851
RY850
C877
C878
IC852
R864
C879
R865
C861
C862
J1086
C864
C890
C873
C871
C1088
C1089
C1096
CN851
IC851
IC850
J853
R882
R883
C880
C881
R885
R884
C883
C882
C868
10 50V
75
75
0.1
47p
47p
75
75
75
75
10
50V
0.1
0.1
10
50V
75
75
2200p
10
50V
75
47p
47p
75
0.1
0.1
0.1
0.1
1SS133
1SS133
4P
11P
5P
10P
100
1k
1k
2200p
GP1FM313RZ
0.1
75
75
75
2200p
3P
1SS133
1SS133
10K
2.2K
DTC114ESA
2SA1015
0.1
1000
6.3V
6.3V
LA7213
150K
1
50V
330
2200p
2200p
0.1
100
10V
47
16V
47
16V
0.1
0.1
0.1
10P
NJM-2595D
NJM-2595D
75
75
47p
47p
75
75
0.1
10
50V
2200p
VIDEO3(Y)
VIDEO3(C)
V-SW1
V-SW2
V-SW4
V-SW3
-5V
GND
+5V
VIDEO3
SW4
SW3
+5V
GND
-5V
VIDEO3(V)
H.P R
GND
H.P L
H.P SW
GND
H.P SW
VCC(3.3V)
OPT GND
OPT OUT
V GND
(CHASSIS)
(CHASSIS)
C
Y
S-VIDEO
VIDEO
AUDIO
L
R
INPUT
VIDEO 3
INPUT
VIDEO 3
DIGITAL
OPTICAL
PHONES
V3 R
V3 GND
V3 L
VIDEO3(C)
VIDEO3(Y)
VIDEO3(V)
C
Y
(CHASSIS)
C
Y
C
Y
(CHASSIS)
(CHASSIS)
C
Y
C
Y
VIDEO
C SWITCH
Y SWITCH
RELAY
DRIVE
RELAY
DRIVE
-1
-2
SYNC
COMPARATOR
IN
H
SY
N
C
G
N
D
VS
YN
C
V
C
C
DIGITAL OPTICAL RECEIVER
C
Y
Y
C
VIDEO2
S-VIDEO IN
VIDEO2
S-VIDEO OUT
GND
(CHASSIS)
TV/SAT
S-VIDEO IN
DVD
S-VIDEO IN
S-VIDEO OUT
VIDEO 1
VIDEO 1
S-VIDEO IN
MONITOR
S-VIDEO OUT
NC
NC
NC
V
Y
C
MONITOR-OUT
V-MONITOR
6-18. SCHEMATIC DIAGRAM – S-VIDEO Section –
(Page 47)
(Page 38)
(Page 29)
(Page 33)
(Page 38)
•
See page 53 for IC Block Diagrams.
STR-DB798
32
32
STR-DB798
6-19. PRINTED WIRING BOARD – COMP-V BOARD –
JW
104
JW105
JW106
JW107
JW
111
JW125
JW128
JW
141
JW143
JW
152
JW
153
JW
154
JW
155
JW156
JW173
R306
R305
C308
C338
C330
R394
C364
C372
R391
R390
R389
R392
R376
R373
R377
R383
R393
R382
R
375
R374
C393
C363
C371
C373
C368
C389
C378
C377
C397
C395
C388
R358
IC372
L370
L371
J301
Q371
C317
CN3801
R387
FB353
C313
C352
FB354
C312
C311
C310
C309
X371
C331
R385
R
384
C358
C369
Q373
R959
R955
R954
C954
Q956
Q955
Q954
C956
IC952
C3802
IC951
C3803
C3804
R386
C3801
C952
R359
R363
R369
R367
R368
C354
IC370
R304
R303
R309
R308
R307
C382
C356
C387
C
385
L372
C366
Q372
C357
C365
L374
CNP3052
C367
C381
C379
C380
R
378
JW140
JW
108
JW167
JW
166
R956
JW
168
JW
137
R
313
JW
160
JW
163
C350
JW183
JW165
JW
191
JW
164
JW126
JW142
JW300
JW
161
JW195
L373
L378
L377
JW
159
L376
R366
R
365
JW139
JW190
JW192
CN918
CN
919
EB390
JW
150
JW
149
JW
151
JW
109
JW182
JW
144
JW
145
JW180
C955
C953
Q957
Q953
C374
C375
C376
C386
C353
C390
C355
C362
C383
C394
C361
C399
C360
C396
L375
R379
R388
C391
C392
JW196
JW
197
C398
JW
148
R
302
R301
JW
146
JW
198
JW
103
JW
170
C384
IC1304
IC371
Y
P
B
/C
B
/B-Y
DVD IN
P
R
/C
R
/R-Y
TV/SAT IN
COMPONENT VIDEO ASSIGNABLE
1
1
3
1
3
11
S-VIDEO
BOARD
CN854
13
DIGITAL BOARD
CNP352
52
MONITOR
OUT
E
E
E
C
B
E
1
8
16
9
1
12
24
13
COMP-V BOARD
1-867-425-
11
(11)
(CHASSIS)
(CHASSIS)
28
1
14
15
1
4
8
4
63
AU-IN BOARD
CN105
76
STAY-5 BOARD
CN168
B
C
E
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
E
E
E
(Page 30)
(Page 41)
(Page 21)
(Page 34)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
•
Semiconductor
Location
Location
Ref. No. Location
IC370
G-9
IC371
H-5
IC372
H-10
IC951
F-3
IC952
G-2
IC1304
E-10
Q371
F-8
Q372
F-7
Q373
H-10
Q953
G-4
Q954
G-3
Q955
G-3
Q956
G-3
Q957
H-2
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