Sony STR-DB798 Service Manual ▷ View online
STR-DB798
45
45
STR-DB798
D549
R547
D444
R444
D449
R447
R449
R499
R599
R549
CN449
CN448
D699
R749
R699
CN444
CN451
RY549
RY444
RY449
L449
L599
L549
L499
R548
R598
R443
R493
R448
R498
TM449
TM699
R748
R698
R697
L649
L699
R649
RY699
RY649
TM444
L749
C598
C448
C493
C443
C599
C549
C698
C498
C548
C444
C749
C699
C649
R647
C449
C499
CN447
C748
C494
C648
R809
J803
C810
D649
R648
CN443
D810
R829
RY807
1SS133
10
1SS133
10
1SS133
10
10
10
10
10
8P
4P
1SS133
10
10
6P
4P
10
10
10
10
10
10
10
10
10
10
470p
470p
0.01
0.01
0.01
0.01
470p
470p
470p
470p
0.01
0.01
0.01
10
4700p
4700p
4P
3900p
100p
100
1k
1P
2200p
1SS133
10
6P
1SS133
10
GND
GND
GND
SR
SL
GND
FL
FR
24V(RY)
FA-RY
FB-RY
SR-RY
(CHASSIS)
(CHASSIS)
(CHASSIS)
SBR
24V(RY)
GND
GND
GND
C
SW
GND
C/SB-RY
SBL
(CHASSIS)
(CHASSIS)
(CHASSIS)
-1
-2
-1
-2
-1
-2
R
L
SURR
R
L
FRONT B
R
L
FRONT A
-1
-2
-1
-2
R
L
SURR BACK
CENTER
SUB WOOFER
AUDIO OUT
SW(RY)
SPEAKERS
SPEAKERS
(NC)
(NC)
6-32. SCHEMATIC DIAGRAM – SPEAKER Section –
(Page 38)
(Page 38)
(Page 38)
(Page 38)
STR-DB798
46
46
STR-DB798
6-33. PRINTED WIRING BOARDS – DISPLAY Section –
JW1004
JW1005
JW1006
JW1007
JW
10
11
JW1026
JW1062
R
1
005
RV1061
IC1006
FL1603
R1009
C1008
R1055
R1004
C1003
C
100
9
C
100
5
C1007
C1
001
C
10
0
2
C
100
6
R1054
R1053
R1052
R1047
R1046
R1044
R1043
R
105
9
R
1
058
JW1063
R
1056
R
1
0
12
R
1011
C1
026
C
1025
C
10
24
C
1023
C
1022
C
1021
C
1
02
0
C
101
9
C
1018
C1017
C1
016
C1
01
5
C
1
01
3
C
101
2
C
1
011
Q
1
03
2
Q1031
C1031
R1031
R1035
R1033
R1032
R1037
CN1080
R1036
S1042
S1041
S1043
S1044
S1045
S1046
S1047
S1051
S1052
S1053
S1054
S1065
S1056
RV1052
RV1051
S1057
S1050
IC1051
D
1
071
JW1061
JW
10
19
JW
1021
JW1022
JW
10
1
8
JW
10
1
7
JW
1
016
JW
1
012
JW
10
13
JW1023
JW1024
JW1025
C1027
TP100
CN
1061
JW1027
JW
10
28
JW1029
JW
1020
JW
10
30
JW
10
31
JW
10
32
JW1008
JW
1
033
JW1002
JW1001
JW
1003
R1014
R1015
JW1066
R1042
C1071
C1014
C1010
C1051
D1031
CN1001
R1045
IC1001
RV1060
CN1060
R1060
R1057
S1062
S1061
CN1062
1
3
1
3
1
1
5
3
1-867-412-
11
(11)
DISPLAY BOARD
1
3
1
3
1-867-413-
11
(11)
VOL BOARD
1-867-428-
11
(11)
DIRECT BOARD
E
E
HP-V3 BOARD
CN1081
10
TUNING
PRESET
TUNING
TUNING
−
+
−
+
SURR BACK
DECODING
2CH
A. F. D.
MOVIE
MUSIC
ROTARY ENCODER
−/+
1
3
ROTARY ENCODER
1
5
MASTER
VOLUME
VOLUME
1
3
1-867-418-
11
(11)
FUNC BOARD
ROTARY ENCODER
INPUT SELECTOR
MULTI
CH IN
DIRECT
(CHASSIS)
INPUT
MODE
MODE
DISPLAY
DIGITAL BOARD
CN1105
3
ROTARY ENCODER
MENU
MAIN MENU
MEMORY/ENTER
SPEAKERS
1
44
22
12
FLUORESCENT INDICATOR TUBE
11
33
34
23
MULTI CHANNEL DECODING
A
B
C
D
E
F
G
H
I
J
K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
42
1
1
7
14
8
(Page 30)
(Page 21)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
D1031
I-13
D1071
I-11
IC1001
H-13
IC1006
F-14
IC1051
H-1
Q1031
I-14
Q1032
I-13
Ref. No. Location
•
Semiconductor
Location
Location
STR-DB798
47
47
STR-DB798
R1042
R1035
R1032
C1031
R1033
C
10
26
C
1
0
25
C
10
2
4
C
10
2
3
C
10
2
2
C
10
2
1
C
10
2
0
C
10
1
9
C
10
1
8
C
10
1
7
C
10
16
C
10
1
5
C1014
C1013
C1011
C1007
C1005
C1009
IC1006
R1031
R1037
Q1031
R1059
R1058
C1051
R1009
CN1080
R1005
R1012
C1012
FL1603
S1054
S1053
S1052
S1051
R1047
R1046
R1045
R1044
R1043
CN1060
R1036
C1071
RV1060
RV1061
S1042
S1041
S1057
S1050
RV1052
RV1051
D1031
R1011
R1004
S1047
S1046
S1045
S1043
S1044
S1056
S1065
CN1001
D1071
C1008
IC1001
C1001
C
1
00
2
C1003
R1057
R1060
S1061
S1062
CN1061
CN1062
R1052
R1053
R1054
R1055
R1056
TP100
C1027
IC1051
Q1032
R1014
C1006
R1015
C1010
JW1061
JW1062
JW1063
1k
10k
10k
0.1
56
22
0p
22
0p
2
2
0p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
2
2
0
p
22
35V
0.1
0.1
220p
0.1
0.1
TC74ACT08P
220
4.7k
2SA1175
100
10
47
16V
47k
5P
82k
1
0.1
22k
10k
4.7k
2.2k
2.2k
3P
4.7k
47
16V
SEL5E20C
TP15
1
47k
31P
HZ6.8BP
-TK
220p
PT6315
100p
1
00
p
2200p
22k
47k
5P
3P
1k
2.2k
2.2k
4.7k
10k
0.1
NJL24H400A
2SC1740TP
100
100p
100
220
6.3V
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
GRID1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
GRID8
GRID9
GRID10
GRID11
GRID12
GRID1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
GRID8
GRID9
GRID10
GRID11
GRID12
GND
GND
H.P SW
VCC(3.3V)
OPT GND
OPT OUT
VOL+
VOL-
VOL+
VOL-
FL CLK
FL DATA
AD1
AD2
FUNC+
FUNC-
VOL+
VOL-
POWER
SIRCS
FL STB
+5V
-28V
+3.3V
HP SW
MENU -
MENU +
-/+ +
-/+ -
SP SW
+3.3V(STBY)
V3 OPT
FLUORESCENT INDICATOR TUBE
ROTARY ENCODER
MASTER
VOLUME
ROTARY ENCODER
INPUT
SELECTOR
DISPLAY
INPUT MODE
SPEAKERS
DISP GND
DISP GND
DISP GND
OPT GND
OPT GND
ROTARY ENCODER
-/+
ROTARY ENCODER
MENU
REMOTE
CONTROL
RECEIVER
VCC
GND
OUT
MULTI CHANNEL DECODING
LED DRIVE
CONTROL
DIMMER
SWITCH
H.P SW GND
INDICATOR TUBE
FLUORESCENT
GRID9
VSS
VDD
GRID1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
GRID8
GRID12
GRID11
GRID10
SEG10
VEE
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG9
VDD
VSS
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
KEY2
KEY1
STB
CLK
DIN
DOUT
OSC
LED4
LED3
LED1
LED2
DRIVER
LEVEL SHIFT
MUSIC
MOVIE
A.F.D.
2CH
TUNING
-
+
DECODING
PRESET
TUNING
-
+
MEMORY/ENTER
MAIN MENU
SURR BACK
AC 6V
GND
AC 6V
MULTI
CH IN
DIRECT
GND
GND
AD2
GND
AD2
(CHASSIS)
GND
(Page 25)
6-34. SCHEMATIC DIAGRAM – DISPLAY Section –
(Page 31)
STR-DB798
48
48
STR-DB798
6-35. PRINTED WIRING BOARDS – DC Section –
JW905
JW904
JW902
JW903
JW918
F904
F903
JW
907
JW
926
JW927
JW909
CN906
JW914
JW
920
JW
921
JW
922
JW14
D915
D913
D
912
CN910
CN911
D908
Q903
CN913
C918
EB901
R904
D904
D905
CN912
R902
D903
R910
D902
D909
D906
C917
C920
R913
D916
D914
C902
C907
C916
C915
C903
C923
JW923
JW913
JW
908
JW915
C919
R912
R911
C924
C926
C925
C909
C908
C906
C904
CN907
CN909
CN902
CN901
JW
911
JW
912
DC PWR BOARD
1-867-422-
11
(11)
1
1
3
6
MAIN POWER
TRANSFORMER
T901
39
MAIN POWER
TRANSFORMER
T901
38
(CHASSIS)
MAIN BOARD
CN422
29
AC BOARD
CN51
40
1
3
MAIN
BOARD
CN414
25
DIGITAL
BOARD
CN1110
2
MAIN
BOARD
CN420
36
MAIN BOARD
CN415
30
1
5
C
E
1
10
4-8 OHM BOARD
1-867-420-
11
(11)
3
1
MAIN POWER
TRANSFORMER
T901
41
S901
IMPEDANCE
SELECTOR
4
Ω
8
Ω
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
B
C
E
(AEP, TW)
(Page 50)
(Page 36)
(Page 36)
(Page 21)
(Page 36)
(Page 36)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
D902
F-1
D903
C-5
D904
C-5
D905
B-5
D906
C-5
D908
D-3
D909
G-2
D912
C-2
D913
C-2
D914
C-1
D915
C-1
D916
D-6
Q903
G-1
Ref. No. Location
•
Semiconductor
Location
Location
(Page 50)
(Page 50)
(Page 50)
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