Sony STR-DB798 Service Manual ▷ View online
STR-DB798
41
41
STR-DB798
6-28. PRINTED WIRING BOARDS – STAY Section –
CN18
EB18
CN38
EB38
EB28
CN28
CN168
CN178
1
4
1-867-421-
11
(11)
FAN BOARD
71
A CLASS BOARD
CN2005
(CHASSIS)
72
A CLASS BOARD
CN2004
(CHASSIS)
73
A CLASS BOARD
CN2003
77
MAIN BOARD
CN488
(CHASSIS)
1-867-495-
11
(11)
STAY-2 BOARD
1-867-429-
11
(11)
STAY-1 BOARD
STAY-5 BOARD
76
COMP-V BOARD
CN918
1-867-495-
11
(11)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
(Page 40)
(Page 40)
(Page 40)
(Page 36)
(Page 32)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
STR-DB798
42
42
STR-DB798
R2610
R2015
R2013
R2014
D2001
R2012
R2007
R2006
R2011
R2002
C2001
R2003
C2010
R2001
R2115
R2112
R2109
R2110
R2108
R2107
R2103
R2104
R2111
C2106
R2008
R2019
C2108
R2119
C2009
R2101
C2101
C2008
R2216
R2215
D2201
R2212
C2206
R2209
R2207
R2202
C2201
R2203
R2201
C2006
R2208
R2210
C2210
R2315
R2312
C2306
R2309
R2307
R2308
R2303
R2301
R2302
C2110
C2301
CN2401
R2415
D2401
R2412
R2419
R2402
C2401
R2409
R2411
C2406
R2414
R2413
R2406
R2407
R2408
R2511
R2515
D2501
R2512
R2509
Q2504
R2513
R2514
C2506
R2506
R2508
R2507
R2502
C2501
R2503
R2504
R2510
C2510
R2519
C2508
C2109
C2308
R2319
R2102
R2401
C2310
CN2101
Q2603
R2607
R2605
R2606
D2603
Q2601
CN2001
R2214
R2213
C2409
R2314
R2313
R2501
D2604
C2509
C2209
R2310
C2208
R2219
R2009
C2005
C2004
C2105
C2104
C2205
C2204
C2305
C2304
C2405
C2404
C2505
C2504
R2604
C2603
C2601
R2601
R2603
C2602
Q2602
Q2506
R2306
Q2303
Q2305
Q2304
Q2306
Q2401
Q2404
Q2405
Q2406
Q2403
R2206
Q2203
Q2204
Q2205
D2101
Q2106
Q2104
Q2105
R2113
R2114
R2106
Q2103
Q2206
Q2004
Q2005
Q2006
Q2003
R2010
R2005
R2211
R2205
R2305
R2105
R2204
C2207
C2007
C2107
C2307
R2311
C2507
C2407
Q2505
R2505
Q2503
D2301
R2404
C2410
C2408
C2606
C2605
R2403
R2004
R2304
R2602
R2410
C2002
C2302
C2202
C2102
C2402
C2502
D2601
R2516
R2416
R2405
C2411
Q2201
C2211
Q2001
C2011
R2016
R2116
Q2501
C2511
Q2301
C2311
Q2101
C2111
R2316
CN2301
C2309
CN2201
10k
120
470
120
MTZJ5.6B
100k
560
1.2k
100k
56k
220p
330
2200p
100V
1k
120
100k
2.2k
56k
3.3k
560
330
1.2k
100k
4p
500V
3.3k
150
220p
100V
100V
150
2200p
100V
100V
100V
1k
220p 100V
220p
100V
100V
18k
120
MTZJ5.6B
100k
4p
500V
2.2k
560
56k
220p
330
1k
4p
500V
3.3k
56k
2200p
100V
120
100k
4p
500V
2.2k
560
3.3k
330
1k
56k
2200p
100V
220p 100V
12P
120
MTZJ5.6B
100k
150
56k
220p 100V
2.2k
100k
4p
500V
120
470
1.2k
560
3.3k
100k
120
MTZJ5.6B
100k
2.2k
2SA992
470
120
4p
500V
1.2k
3.3k
560
56k
220p 100V
330
1.2k
56k
2200p
100V
150
220p
100V
100V
2200p
100V
220p
100V
100V
150
56k
1k
2200p
100V
12P
2SC1841
150k
470
470
1SS133
2SD2396
6P
120
470
2200p
100V
120
470
1k
1SS133
2200p
100V
2200p
100V
56k
220p
100V
100V
150
2.2k
330
25V
25V
220
16V
16V
330
25V
25V
220
16V
16V
330
25V
25V
220
16V
16V
330
25V
25V
220
16V
16V
330
25V
25V
220
16V
16V
330
25V
25V
220
16V
16V
1
4.7
100V
47
100V
4.7k
1W
1
47
100V
2SB1565
2SC2229
1.2k
2SC1740
2SA949
2SA992
2SC2229
2SC5169
2SA992
2SA949
2SC2229
2SC1740
1.2k
2SC1740
2SA992
2SA949
MTZJ5.6B
2SC2229
2SA992
2SA949
470
120
1.2k
2SC1740
2SC2229
2SA992
2SA949
2SC2229
2SC1740
56k
4.7k
100k
4.7k
4.7k
4.7k
1.2k
33p
500V
33p 500V
33p
500V
33p
500V
100V
100V
100k
33p 500V
33p 500V
2SA949
4.7k
2SC1740
MTZJ5.6B
1.2k
2200p
100V
220p
100V
22
100V
22
100V
330
1.2k
1.2k
4.7k
1/2W
1/2W
56k
47
63V
47
63V
47
63V
47
63V
47
63V
47
63V
MTZJ15C
18k
18k
4.7k
100p 100V
2SC5169
100p
2SC5169
100p
18k
18k
2SC5169
100p 100V
2SC5169
100p 100V
2SC5169
100p 100V
18k
10P
2200p
100V
12P
SBL
GNDA
NF
+B
-B
GNDB
BIAS+
BIAS-
L1
L2
L3
L4
L
1
L
2
L
3
L
4
L7
L8
L
5
L
6
L7
L8
L9
L
9
L10
L
1
0
M1
M2
M3
M4
M
1
M
2
M
3
M
4
L5
L6
L7
L8
GND
+B
-B
GND
LIMITER
GND
BIAS+
BIAS-
NF
BIAS+
BIAS-
NF
GND
R
GND
BIAS+
BIAS-
NF
GND
GND
BIAS+
BIAS-
NF
SR
BIAS+
BIAS-
NF
GND
SL
GND
BIAS+
BIAS-
NF
GND
GND
SHORT
SBL
GND
GND
GND
GND
SWITCH
LIMITER
LIMITER SWITCH
SWITCH
LIMITER
PRE DRIVE
3
1
2
4
5
BIAS
BIAS
BIAS
5
4
2
1
3
PRE DRIVE
BIAS
BIAS
BIAS
PRE DRIVE
3
1
2
4
5
BIAS
BIAS
BIAS
5
4
2
1
3
PRE DRIVE
BIAS
BIAS
BIAS
5
4
2
1
3
PRE DRIVE
BIAS
BIAS
BIAS
5
4
2
1
3
PRE DRIVE
BIAS
BIAS
BIAS
SB(R)
PRE DRIVE
PRE DRIVE
PRE DRIVE
PRE DRIVE
PRE DRIVE
PRE DRIVE
L
(1/2)
C
GND
BIAS+
NF
GND
SBL
BIAS-
6-29. SCHEMATIC DIAGRAM – A CLASS Section (1/2) –
(Page 43)
(Page 39)
(Page 39)
(Page 39)
(Page 39)
(Page 39)
STR-DB798
43
43
STR-DB798
R2706
R2704
R2703
R2705
R2711
R2701
R2708
R2707
R2715
D2701
R2712
C2708
R2719
R2709
R2710
R2714
R2713
C2705
C2706
Q2706
Q2704
Q2705
C2704
Q2701
Q2703
C2701
R2702
C2702
C2808
C2807
R2716
C2707
C2711
CN2005
CN18
CN2004
CN2003
CN28
CN38
CN168
CN178
1.2k
1.2k
330
4.7k
100k
1k
3.3k
560
120
MTZJ5.6B
100k
220p
100V
100V
150
2.2k
56k
120
470
330
25V
25V
4p
500V
2SC2229
2SA992
2SA949
220
16V
16V
2SC5169
2SC1740
220p 100V
56k
47
63V
0.0022
100V
0.0022
100V
18k
4p 500V
100p 100V
4P
4P
4P
4P
4P
4P
6P
6P
GND
-B
+B
NF
GND
SBL
BIAS-
BIAS+
1
2
4
3
5
BIAS
BIAS
BIAS
PRE DRIVE
PRE DRIVE
(2/2)
(CHASSIS)
(CHASSIS)
(CHASSIS)
EB18
EB28
EB38
6-30. SCHEMATIC DIAGRAM – A CLASS Section (2/2) –
(Page 42)
(Page 33)
(Page 39)
STR-DB798
44
44
STR-DB798
6-31. PRINTED WIRING BOARDS – SPEAKER Section –
JW501
JW503
JW505
JW508
JW509
JW510
JW511
JW516
JW518
JW520
JW522
JW524
JW527
JW519
JW507
JW506
JW512
JW513
JW514
JW515
C698
CN449
CN448
C549
R548
R598
RY449
C599
C498
C548
C448
C598
RY549
C443
RY444
L549
L499
L449
R443
R493
R599
R549
R499
R449
C493
C449
R444
R447
D444
D449
D549
R547
C499
R498
R448
CN447
L599
C444
JW701
JW706
JW704
JW707
JW200
JW201
JW710
JW711
JW712
JW713
JW714
CN451
R749
CN444
C748
C494
C648
D810
L699
D649
R699
L649
R649
R698
R748
R697
R647
R648
D699
RY699
RY649
C699
C749
C649
L749
RY807
CN443
R829
R809
C810
J803
SPK-A BOARD
1-867-423-
11
(11)
SPK-B BOARD
1-867-424-
11
(11)
+
–
+
–
+
–
–
+
R
L
FRONT B
R
L
SURR
+
–
+
–
R
L
FRONT A
SPEAKERS
-2
-1
-2
-1
-1
-2
SPEAKERS
(CHASSIS)
–
+
–
+
–
+
L
R
CENTER
SURR
BACK
6
1
MAIN BOARD
CN413
24
MAIN BOARD
CN412
28
-2
-1
-2
-1
SUB WOOFER
AUDIO OUT
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
23
MAIN BOARD
CN411
26
MAIN BOARD
CN410
1
8
(CHASSIS)
(CHASSIS)
(CHASSIS)
TM699
TM499
(NC)
(CHASSIS)
(NC)
TM444
(Page 36)
(Page 36)
(Page 36)
(Page 36)
•
See page 19 for Circuit Boards Location.
: Uses unleaded solder.
D444
E-5
D449
D-4
D549
G-5
D649
E-10
D699
B-10
D810
G-12
Ref. No. Location
•
Semiconductor
Location
Location
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