K Board Schematic Diagram (Kv-21Fa310 Only) - Sony TRINITRON KV-20FS120 Service Manual

K BOARD SCHEMATIC DIAGRAM (KV-21FA310 ONLY)

1 | 2 | 3
A
—
C2416
5600p
R2459
470k
C2499
B 470p
51 50 49 48 47 46 45 44 43
C2429
52
— VCS-TC2
C2431
53
VCS-TC1
C2432
VLR-TC1
54
C2433 0.22mF
VLR-TC2
55
C2434
56
S-RECT-OUT
IC2404
C2435
NJM2177
57 C-RECT-OUT
C
DOLBY SURROUND
C2436
58 R-RECT-OUT
C2437
59 L-RECT-OUT
C2438 22000p
60
S-RECT-OUT
C2439 22000p
61 C-RECT-OUT
R2408 7.5k
— 62 L-BFP-OUT
C2440 C2480
63 L-BPF-IN
R2410
R2411
15k 64
47k NC
C2441
680p
1 2 3 4 5 6 7 8 9
D
C2444
47000p
C2442
47000pF
C2443
680p
C2479
C2477
—
E
—
F
—
G
TO-CN403 ABOARD
CN2401
7P
—
SCL 1
SDA 2
9V 3
GND 4
H HEADPHONES 5
AUDIO/VCC 6
PGND 7
-2
— R2494
100k
R2519
TO-CN402 ABOARD
1k
CN2402
5P
SW R
1
RT
I
LT 2
GND 3 SW L
L
4
L
R 5
R
—
J
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
| 4 | 5 | 6
19V
C
9V
R2404
15k
C2490
C2406
42 41 40 39 38 37 36 35 34 33
32
NC
L-R-OUT 31
L+R-OUT 30 R
R-OUT 29
L
R2438
28
L-OUT
10k
MODE-CNT 27
CENTER-CNT 26
S R2439
10k
S-OUT 25
C2405
24
LPF
C2404 4700p
HPF 23
REF 22
C2403
CNT-B 21
R2401 100k
CNT-A 20
10 11 12 13 14 15 16 17 18 19
R2403
SW R 4.7k
R2433
10k
R2490
100k
SW L
R2491
100k
C2402 C2401
C2446
C2447 R2417
22k
R2416
22k
R2418
100
R2419
100
R2434
100k
R2440
22k
C2430
R2432
Q2401 R2461
0
2SC2412K-T R2488 33k
2.2k
-146-QR
R2481
1.5k
R2462
R2493
75k
100k
D2401
C2470
4700p
R2442
1k
R2521
10k
Q2400
R2520
2S2412K-T-146-Q
1k R2443
47k
R2436
1k
Q2418
R2523
47k
Q2419 R2522
2CS2412K-T 47k
| 7 | 8 | 9 |
JR2401 JR2402
0
0
-2
-2
IC2401
TDA8947J
AUDIO AMP R2409
1/10W
-2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
PS2401
C2412
-2
0.47
D2400 C2414
MA111-TX 50V
-2
-2
C2411
C2449
SW
47000p
C-
SW-
SW+
C C2448
IC2403
NJW1164
C/SW PROCESSOR
C2469
C SW
R2451
C2451 3300p
C2468 3300p
100k
BBE1
BBE1
C2467 33000p
BBE2
BBE2
C2452 33000p
BBE-OUT BBE-OUT
R2452
TONE-IN
TONE-IN
1k
C2453 4700p
C2466 4700p
TONE-H
TONE-H
C2454
TONE-L TONE-L
R2435 C2465
R2450
10k C
OUT OUT
R2454 1k
R2453
AGC SR-FIL
47k C2455
C2464
SS-FIL VREF
C2463 C2456
CUB
CTH
C2457
C2462
CVA
CTL
C2458
C2461
SDA
AUX1
R2455 100
SCL AUX2
R2456
100 GND VCC
R2446 C2459
10k
C2460
SW L
R2420
C2420
22k 1/10W
0.47
R2500 C2421
SW R
4.7k 0.47
R2485
1k
R2477 15k
R
R2476
15k
C
L
S
30 29 28 27 26 25 24 23 22 21 20
R2458
2.2M
C2471
4700p
R2465
1.8k
R2464
1 2 3 4 5 6 7 8 9 10 11
51k
R2466
C2473 R
R2463
6.2k
1.5k
C2475
C2474
R2437
10k
10 | 11 | 12 |
R2507
100
R2492 R2505 Q2414 Q2412
22k 47k 2SD601A 2SB709A
Q2410
R2502
MUTE MUTE
2SB709A
22k
MUTE
R2524
0
R2483
22k
C2493 R2501
22k
10k R2498 C2495 Q2413
22k R2503 2SB709A
Q2411
22k MUTE
2SB709A
MUTE
R2499
22k
C2494 R2504
22k
C2413
C2496
1000
35V
-2
JR2420
0
C+
JR2421
JR2410
0
0
JR2411
0
C2428
2200
25V
C2450
R2447
1k
10k
R2449
47k
R2429
4.7k
1/10W
R2422
10k
1/10W
R2428
SW
4.7k
R2423
39k
8 7 6 5
1/10W
IC2402
C2423
NJM4558M-T
R2421
0.047
AUDIO FILTER
22k 16V
1/10W
B
R2424
C2487
39k
R2496 150k 1/10W
1 2 3 4
C2488 R2495
4700p 20k
R2489
R2487
R2425
15k 11k
C2489 39k
1/10W
C2427
R2427
R2441 10k
47
470
R2402
25V
1/10W
10k
C2424
0.0068
R2426
25V C2425
470 1/10W
B 0.1
16V
B
C2426
100p 50V CH
19 18 17 16
IC2405
NJM2180
TRUSURROUND
R2473
2.2M
12 13 14 15
R2474 33k
C2481 4700p
R2471 1.8k
R2472 51k
R2475 75k
R2470
C2478
39k
L C2476 4700p
K BOARD
AUDIO
9-965-959-01<BA6S>K
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
13 |
TO-SUB-WOOFER
1 SW+
2 CS+
CN2400
4P
3 CS-
SW-
4
49