Schematic Diagram − A Class Section (1/2) - Sony STR-DB798 Service Manual

STR-DB798
6-29. SCHEMATIC DIAGRAM – A CLASS Section (1/2) –
(1/2)
L8
SBL
GNDA
L7 C2310
NF 2200p
100V
+B
-B
GNDB
(Page 43) BIAS+
BIAS-
CN2101
12P
C L1
GND
NF L2
BIAS-
BIAS+
GND
R L3
GND
(Page 39)
NF L4
BIAS-
BIAS+
CN2201
12P
SBL
L8
GND
NF
L7
BIAS-
BIAS+
GND
L L5
GND
NF L6
(Page 39)
BIAS-
BIAS+
GND
SHORT L7
GND
SBL L8
GND
SB(R) L10
GND
NF L9
BIAS-
(Page 39)
BIAS+
CN2301
10P
CN2001
6P
GND
GND
GND
+B
-B
LIMITER
(Page 39)
STR-DB798
Q2005
2SA949
BIAS
Q2006
2SC2229
R2015
120 BIAS
Q2004
2SA992
BIAS
D2001
MTZJ5.6B
C2006
C2007 R2011
4p
33p 500V 100k
500V
C2008 R2019
C2005
220p 150
330
100V
25V
R2016
18k Q2001
R2012 2SC5169 1
100k
PRE DRIVE
3
R2005
C2004
4.7k
220
R2009
16V
2.2k
5
Q2003
2SC1740
R2007 R2008 R2006
560 3.3k 1.2k PRE DRIVE
R2003
330
C2002
C2001 R2002
47
C2109 220p 100V 56k
63V
2200p
100V
C2009 2200p 100V
R2119 R2001
150 1k
C2108
R2116
220p
18k
100V
Q2105
2SA949
BIAS
Q2106
2SC2229
R2115
120 BIAS
Q2104
2SA992
BIAS
C2105
330 C2106
D2101 C2107 R2111
25V 4p
MTZJ5.6B 33p 500V 100k
C2208 500V
R2216
220p
18k
100V
R2112
100k
Q2101
R2219 R2109 1
2SC5169
150 2.2k
PRE DRIVE
2
3
C2209 C2104 R2105
4
2200p 220 4.7k
100V 16V
5
R2108
Q2103
C2309 3.3k
2SC1740
2200p R2107
100V 560 PRE DRIVE
R2106 R2103
1.2k 330
C2102
R2316 R2319 R2102 C2101
47
18k 150 56k 220p 100V
63V
C2308
R2101
220p
1k
100V
R2014 R2214
120 120
Q2205
2SA949
R2013 R2213
Q2206 BIAS
470 470
2SC2229
R2215
120 BIAS
Q2204
2SA992
BIAS
D2201
MTZJ5.6B
C2206
R2211 C2207
4p
100k 33p 500V
500V
C2205
330
25V
Q2201
R2212 2SC5169 1
100k
PRE DRIVE
2 2
3
R2205
4 4
4.7k
C2204 R2209
R2004 220 2.2k
C2011
1.2k 16V C2211
100p
100V
5 100p 100V
Q2203
2SC1740
R2207 R2208
560 3.3k PRE DRIVE
R2206 R2203
1.2k 330
C2010
C2202
2200p C2201 R2202
47
100V 220p 100V 56k
63V
R2201
1k
Q2305
2SA949
R2114 R2314
120 BIAS 120
Q2306
2SC2229
R2315
120 BIAS
R2113 R2313
470 470
C2305 Q2304
330 2SA992
25V
BIAS
C2306
R2312 C2307 R2311
4p
100k 33p 500V 100k
500V
Q2301
C2304 R2309 1
2SC5169
220 2.2k
16V PRE DRIVE
2
3
R2305
4
4.7k
R2308
R2104 3.3k
C2111 1.2k C2311
100p 100V 5 100p 100V
Q2303
2SC1740
R2307
560 PRE DRIVE
R2110
56k R2306 R2303
1.2k 330
C2302
R2302 C2301
47
56k 220p 100V
63V
R2301
1k
C2606
22
100V
R2610
10k
C2605 D2603
22 1SS133
100V
D2601
MTZJ15C
Q2601
2SD2396 C2603
4.7
LIMITER
100V LIMITER SWITCH
SWITCH
R2603 R2607
1 150k
R2605
R2601 C2601
470
4.7k 47
1W 100V
42 42
C2410
2200p
100V
C2409 R2419 C2408
2200p 100V 150 220p 100V
R2414
120
R2416
18k
Q2405
2SA949
R2413
Q2406 BIAS
470
2SC2229
R2415
120 BIAS
Q2404
2SA992
BIAS
D2401
MTZJ5.6B
C2406
C2407
4p
33p 500V
500V
C2405
330
R2411
25V
100k
Q2401
1
2SC5169
R2412 PRE DRIVE
2
100k
3
4
R2405
4.7k R2404
C2404 R2409 C2411 1.2k
R2204 220 2.2k 5 100p 100V
1.2k 16V
Q2403
2SC1740
R2408
3.3k PRE DRIVE R2403
330
C2402
R2407 R2406 R2402
47
560 1.2k 56k
63V
C2401 R2401
220p 100V 1k
Q2506
2SC2229
R2515 R2514
120 BIAS 120
Q2505
2SA949
D2501 R2513
BIAS
MTZJ5.6B 470
C2505 Q2504
330 2SA992
25V
BIAS
C2506
R2512 R2511 C2507
4p
100k 100k 33p 500V
500V
Q2501
C2504 R2509 1
2SC5169
220 2.2k
16V PRE DRIVE
2
3
R2505
4
4.7k
R2304 R2504
1.2k C2511 1.2k
5 100p 100V
Q2503
2SC1740
R2508
3.3k PRE DRIVE
R2502
C2510
56k R2503
2200p
R2507 R2506 330
100V
560 1.2k
C2502
C2501
47
220p 100V
63V
R2501
1k
C2509
2200p
100V
D2604
1SS133
Q2602
Q2603
2SB1565
2SC1841
LIMITER
SWITCH
R2606
470
R2602
C2602
4.7k
47 R2604
1/2W
100V 1
CN2401
12P
BIAS+
BIAS-
C2508 M1 NF
220p
100V GND
R2519
M2 SR
150
GND
BIAS+
BIAS-
M3 NF
(Page 39)
GND
M4 SL
GND
R2510
56k