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COMBI CIRCUIT - SOURCE SELECT & SOUND CONTROL PART
1250 A2
1500-A E1
2501 A5
2508 G3
2513 H2
2518 I5
2523 G9
1251 B2
1500-B G1
2502 C5
2509 F3
2514 I3
2519 H5
2524 G10
1252 D1
1501 E1
2503 B5
2510 F5
2515 H3
2520 G11
2525 G10
1253 K2
1506 C10
2504 D4
2511 E5
2516 J3
2521 G9
2526 G10
1254 F6
2500 B5
2505 E4
2512 I2
2517 H3
2522 G11
2527 G10
1
2
3
TAPE
TO/FROM TAPE
1250
FE-BT-VK-N
1
TP_REC_LEFT
TP_REC_LEFT
A
2
TP_REC_RIGHT
TP_REC_RIGHT
TP_LEFT
3
-Vkk
GND_A
-33V
GND_A
4
TP_LEFT
TP_LEFT
5
+11V_A
+12V_A
6
TP_RIGHT
TP_RIGHT
-10V
7
-CMOS
TP_RIGHT
B
1251
TO/FROM CDR
FE-BT-VK-N
REC_LEFT
1
GND_D
GND_D
TP_REC_LEFT
GND_A
2
REC_RIGHT
3
TP_REC_RIGHT
5513
GND_A
4
(Layout join to IC pin 28)
2u2
5
GND_A
CDR_RIGHT
TP_RIGHT
C
6
GND_A
7
CDR_LEFT
TP_LEFT
GND_A
1252
1
GND_M
2
+12V_M
3506
D
CD_RIGHT
EH-B
1K2
TO TAPE MOTOR
1501
YKC21-3418
3507
CD_LEFT
3
1K2
1
E
AUX
2
4
1500-A
YKC21-3424
3511
3513
3
2K2
12K
GND_A
1
AUX
F
2
GND_A
3510
3512
2K2
12K
GND_A
G
LINE OUT
1500-B
YKC21-3424
6
GND_A
4
2517
1u
5
H
7
3519
BC847B
0V
7501
470R
3523
3560
2K2
1M
0V
2515
0V
10p
GND_A
GND_A
7500
3518
0V
BC847B
7508
470R
0V
3522
I
BC857B
GND_A
GND_EMC
2K2
2514
0V
0V
10p
GND_A
GND_A
2516
GND_A
J
1u
1253
3565
1
+12V_A
MIC
2
4R7
K
3
GND_A
4
MIC_DET
FE-BT-VK-N
1
2
3
2528 G13
2533 C14
2538 H16
2543 D16
2548 J11
2560 B8
2566 F11
2529 D13
2534 G14
2539 C16
2544 H12
2549 K11
2561 B10
2567 F15
2530 G13
2535 C14
2540 H16
2545 C12
2550 H9
2562 B10
2568 F15
2531 D13
2536 H15
2541 C16
2546 J4
2551 H9
2563 C9
2612 I1
2532 G14
2537 D15
2542 G16
2547 J11
2559 B3
2565 E11
2613 I1
4
5
6
7
2501
1K
TAPE_L
3501
1u
#
#
GND_A
2500
1K
TAPE_R
3500
1u
+12V_A
2503
TUNER_LEFT
3503
TU_L
1K
100n
GND_A
TUNER_RIGHT
3502
2502
TU_R
1K
100n
GND_A
3569
*
1K
2504
GND_A
CD_R
MIC
1u
GND_A
GND_A
GND_A
2505
TAPE_L
CD_L
1u
GND_A
TAPE_R
GND_A
GND_A
CD_L
2511
TO/FROM SOLID STATE AUDIO
AUX_L
GND_A
1254
1u
1
CD_R
2
3517
GND_A
3
10K
GND_A
4
3516
SS_R
AUX_L
GND_A
5
2510
10K
AUX_R
SS_L
GND_A
1u
FE-BT-VK-N
AUX_R
GND_A
TU_L
GND_A
GND_A
TU_R
GND_A
LINE_L
3521
GND_A
2K2
LINE_R
GND_A
-VKK
SS_L
3525
TP_REC_LEFT
27K
Delete for CDR
1K for CDR
+5V6
GND_A
1K for CDR
3524
TP_REC_RIGHT
27K
Delete for CDR
5V
I2C_CLK
GND_A
3563
I2C_DATA
4K7
SS_R
GND_D
3564
MUTE_LINE
GND_D
10K
5V
3520
LINE_R
2K2
4
5
6
7
2645 G15
3503 B5
3508 D4
3513 E4
3518 I2
3523 H3
3530 G14
2646 C9
3504 C5
3509 E4
3514 G4
3519 H2
3524 I5
3531 D14
3500 B4
3505 C5
3510 F3
3515 F4
3520 J4
3525 H5
3532 G14
3501 A4
3506 D4
3511 E3
3516 F5
3521 H4
3526 I5
3533 D14
3502 C5
3507 E4
3512 F4
3517 F5
3522 I3
3527 I5
3534 H16
8
9
10
11
7509
9.1V
11.4V
BC847B
6509
10V
1N4148
GND_A
GND_A
GND_A
1506
1
GND_A
GND_A
7550
VREF
5V
TDA7468D
2565
27
47u
1
POWER
GND_A
SUPPLY
28
GND_A
3
4
SOURCE
5
SELECTOR
3673
6
470R
2566
2
3674
100n
23
470R
24
25
26
GND_A
GND_A
GND_A
GND_A
GND_A
GND_A
GND_A
GND_A
3542
5K6
3553
12K for S
VREF
P
1M
3554
ALC_LEVEL
P
3K3
P
P
GND_A
GND_A
GND_A
I2C_CLK
I2C_DATA
GND_A
SS_L
3545
SS_L
33K
2549
100n
SS_R
3546
SS_R
33K
GND_A
GND_A
8
9
10
11
3535 C16
3541 C12
3546 K10
3553 H9
3559 K11
3566 A3
3671 A5
3536 H16
3542 H12
3547 J11
3554 H9
3560 H4
3567 B9
3672 B5
3537 C17
3543 C12
3548 K11
3555 H10
3563 I4
3569 D7
3673 F11
3538 F16
3544 I12
3550 J12
3557 J12
3564 I4
3571 E16
3674 F11
3539 E17
3545 J10
3552 J12
3558 J11
3565 K3
3572 F16
4504 G13
12
13
14
15
3543
47K
GND_A
3541
5K6
2533
2535
12K for S
SIMPLE I.S.
470n
470n
P
2529
GND_A
GND_A
4n7
GND_A
GND_A
7
8
9
10 11
VOLUME I
VOLUME II
5511
TREBLE
BASS
12
SUR.
LEFT
LEFT
LEFT
LEFT
16
BASS ALC
ALC_LEVEL
14
LOGIC
IIC BUS
15
13
REC
VOLUME I
TREBLE
BASS
VOLUME II
5512
17
SUR.
RIGHT
RIGHT
RIGHT
RIGHT
22
21
20
19
18
P
2532
2534
470n
470n
GND_A
GND_A
GND_A
GND_A
GND_A
3550
+12V_A
150R
SA_IN
BC857B
7506
7507
BC847B
GND_A
12
13
14
15
4505 D13
6508 B4
7501 H3
7550 D11
4516 I2
6509 B9
7506 K12
9640 I1
5511 E15
6510 C9
7507 K12
5512 F15
6521 I4
7508 I4
5513 C2
7500 I3
7509 B9
16
17
18
A
B
SIMPLE I.S.
3537
C
6n8 for S
39K for S
10K
2541
3535
18K
10n
2539
1n
D
2543
1n
3539
VOL_LEFT
220R
E
GND_A
VOL_RIGHT
GND_A
GND_A
3571
I2C_CLK
1K
3572
I2C_DATA
1K
F
GND_D
3538
220R
2542
1n
GND_A
G
2538
SIMPLE I.S.
1n
2540
3534
18K
10n
H
6n8 for S
39K for S
3536
10K
SIMPLE I.S.
I
A...for external ALC
D...for DPL
S...for simple I.S.
P...provision
J
#...for CDR
K
16
17
18
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