Schematic Diagram - A Class Section - Sony STR-DB795 Service Manual

6-26. SCHEMATIC DIAGRAM – A CLASS Section –
CN2004
6P
SBL L8
GND
SHORT L7
+BA
-BA
GND
(Page 45)
CN2005
4P
(Page 45)
CN2101
12P
L L1
GND
NF L2
BIAS-
BIAS+
GND
R L3
GND
(Page 41)
NF L4
BIAS-
BIAS+
CN2201
6P
C L5
GND
NF L6
BIAS-
BIAS+
GND
(Page 41)
CN2301
10P
SHORT L7
GND
SBL L8
GND
SB(R) L10
GND
NF L9
BIAS-
(Page 41) BIAS+
CN2001
6P
GND
GND
GND
+B
-B
LIMITER
(Page 41)
STR-DB795
C2310
2200p
100V
Q2005
2SA949
BIAS
Q2006
2SC2229
R2015
120 BIAS
Q2004
2SA992
BIAS
D2001
MTZJ5.6B
C2006
C2007 R2011
4p
33p 500V
500V
C2008 R2019
C2005
220p 150
330
100V
25V
R2016
33k
R2012
100k
3
R2005
C2004
4.7k
220
R2009
16V
2.2k
Q2003
2SC1740
R2007 R2008 R2006
560 3.3k 1.2k PRE DRIVE
R2003
330
C2002
C2001 R2002
47
C2109 220p 56k
63V
2200p
100V
C2009 2200p 100V
R2119 R2001
150 1k
C2108
R2116
220p
33k
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
33k
100V
R2112
100k
R2219 R2109 1
150 2.2k
3
C2209 C2104 R2105
2200p 220 4.7k
100V 16V
5
C2309 R2108
Q2103
2200p 3.3k
2SC1740
100V R2107
560 PRE DRIVE
R2106
1.2k
R2316 R2319 R2102 C2101
33k 150 56k 220p
C2308
220p
100V
R2014
120
Q2205
2SA949
R2013
Q2206 BIAS
470
2SC2229
R2215
120 BIAS
Q2204
2SA992
BIAS
D2201
MTZJ5.6B
C2206
R2211 C2207
4p
100k 100k 33p 500V
500V
C2205
330
25V
1 R2212 1
100k
2 2
3
R2205
4 4
4.7k
C2204 R2209
Q2001 Q2201
R2004 220 2.2k
2SC5169 2SC5169
1.2k 16V
5 PRE 5
DRIVE Q2203 DRIVE
2SC1740
R2207 R2208
560 3.3k PRE DRIVE
R2206 R2203
1.2k 330
C2010
C2202
2200p C2201 R2202
47
100V 220p 56k
63V
R2201
1k
Q2305
2SA949
R2114
120 BIAS
Q2306
2SC2229
R2315
120 BIAS
R2113
470
C2305 Q2304
330 2SA992
25V
BIAS
C2306
R2312 C2307 R2311
4p
100k 33p 500V 100k
500V
C2304 R2309 1
220 2.2k
16V
2 2
3
R2305
4 4
4.7k
R2308
Q2101 Q2301
R2104 3.3k
2SC5169 2SC5169
1.2k
PRE 5
DRIVE Q2303 DRIVE
2SC1740
R2307
560 PRE DRIVE
R2110
R2103 56k R2306 R2303
330 1.2k 330
C2102 C2302
R2302 C2301
47 47
56k 220p
63V 63V
R2101 R2301
1k 1k
C2606
22
100V
C2605 D2603
22 1SS133
100V
D2601
MTZJ15C
Q2601
2SD2396 C2603
4.7
LIMITER
100V
SWITCH
R2603
1
R2605
R2601 C2601
470
4.7k 47
1W 100V
43 43
C2410
2200p
100V
C2409 R2419 C2408
2200p 100V 150 220p 100V
R2214 R2414
120 120
R2416
33k
Q2405
2SA949
R2213 R2413
Q2406 BIAS
470 470
2SC2229
R2415
120 BIAS
Q2404
2SA992
BIAS
D2401
MTZJ5.6B
C2406
C2407
4p
33p 500V
500V
C2405
330
R2411
25V
100k
1
R2412 R2405
2
100k 4.7k
3
4
Q2401
2SC5169
C2404 R2409
R2204 220 2.2k 5 PRE
1.2k 16V
DRIVE
PRE
Q2403
2SC1740
R2408 R2403
3.3k PRE DRIVE 330
C2402
R2407 R2406 C2401 R2402
47
560 1.2k 220p 56k
63V
R2401
1k
Q2506
2SC2229
R2314 R2515 R2514
120 120 BIAS
Q2505
2SA949
R2313 D2501 R2513
BIAS
470 MTZJ5.6B
C2505 Q2504
330 2SA992
25V
BIAS
C2506
R2512 R2511 C2507
4p
100k 100k 33p 500V
500V
C2504 R2509 1
220 2.2k
16V
2
3
R2505
4
4.7k
Q2501
R2304
2SC5169
1.2k
PRE 5 PRE
Q2503 DRIVE
2SC1740
R2508
3.3k PRE DRIVE
R2502 R2503
56k 330
R2507 R2506
560 1.2k
C2502
C2501
47
220p
63V
R2501
1k
C2509
2200p
100V
R2610
10k
D2604
1SS133
Q2602
Q2603
2SB1565
2SC1841
LIMITER
LIMITER SWITCH
SWITCH
R2607
150k
R2606
470
R2602
C2602
4.7k
47 R2604
1/2W
100V 1
STR-DB795
CN2401
12P
BIAS+
BIAS-
C2508 M1 NF
220p
100V GND
R2519
M2 SR
150
GND
BIAS+
BIAS-
M3 NF
(Page 41)
GND
M4 SL
GND
CN2003
6P
-15V
R2404
1.2k
GND
+15V
(Page 51)
CN2002
6P
+15V
GND
-15V
(Page 39)
120
470
R2504
1.2k
C2510
R2510
2200p
56k
100V
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.