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1
2
Circuit Diagram AF7 Board
A
1521
5
CDR_PB_L
4
CDR_PB_R
3546
3
4619
CDR_Rec_R
1K5
2
a
1
a
B
3545
4618
CDR_Rec_L
FE-BT-VK-N
1K5
a
5
3525
4535
3
2K7
C
a
4
a
YKC21-3440
1525-A
AUX_IN
5
3526
4536
1
2K7
a
2
YKC21-3440
a
1525-B
D
a
AUX_L
CDC_L
CDR_PB_L
3686
a
12K
E
DIPMATE
21
3511
2511
TUNER_L
4
1K
100n
3
a
2512
AUX_R
3512
2
1K
CDC_R
100n
1
+12A
3687
a
12K
F
CDR_PB_R
TUNER_R
YKC21-3440
5
1526-A
3527
G
3
1K
a
4
a
LINE_OUT
0V
5
3528
1
1K
a
2
a
a
1526-B
YKC21-3440
H
DIPMATE
26
3579
3
+12A
4R7
2
K_OUT
1
a
I
3554
+12A
150R
3519
3551
CDR_Rec_L
2551
33K
150K
0,6V
J
3520
3552
100n
CDR_Rec_R
33K
150K
1
2
8-4
3
4
5
2549
CDR_Rec_L
4u7
3535
120K
2537
15p
NJM4560M
2541
3541
1
L_OLEFT
7512-A
1u
1K
6V
2623
4
3521
AUX_L
18K
1u
BREF
a
a
2624
3522
AUX_R
18K
1u
a
7511
a
TDA7437
16
STEREO_1L
3513
2513
17
STEREO_2L
1K5
LEFT
4u7
CHANNEL
18
STEREO_3L
15
STEREO_4L
3517
2521
4517
14
DIFF_L
3K3
4u7
13
DIFF_GND_L
2677
MONO
11
a
10n
8
STEREO_1R
3514
2514
9
STEREO_2R
1K5
4u7
10
STEREO_3R
7
STEREO_4R
RIGHT-
3518
2522
CHANNEL
4518
6
DIFF_R
3K3
4u7
5
DIFF_GND_R
L_OLEFT
0V
0V
BC847B
7521
BC847B
7522
BREF
2547
0V
10p
a
for FW-R7 only
7529
2548
3530
BC857B
0V
5V
+5V
10p
2K2
a
3536
3550
5V
120K
2538
47K
15p
2542
MUTE_LO
3542
7
7512-B
6V
1K
1u
NJM4560M
2550
CDR_Rec_R
4u7
a
a
SA_IN
1,3V
BC857B
7526
0,6V
7527
BC847B
3
4
5
6
7
8
Bass ALC Circuit
NJM4560M
3543
1
4,2V
7513-A
3K3
3591
a
22K
2597
K_OUT
220p
2593
a
2
6V
47u
3531
3
6V
2K2
a
3533
a
100K
a
a
21
20
12
44
22
23
24
VOLUME
TREBLE
MIDDLE
BASS
LOUDNESS
IN GAIN
LOGIC CONTROL
IN GAIN
VOLUME
TREBLE
MIDDLE
BASS
LOUDNESS
3
2
4
1
31
30
26
a
K_OUT
a
4578
a
3586
47K
4,2V
5
NJM4560M
7
6V
7513-B
4,2V
6
6
2576
4
4,2V
a
3592
1u
5
22K
6V
8
2598
a
a
220p
7524
BC847B
4,1V
BREF
4,1V
a
+12A
3588
4,1V
3544
150K
3K3
Bass ALC Circuit
a
6
7
8
Digitized in Heiloo Netherlands
8-4
9
10
11
12
3587
4,1V
BC847B
ALC
7523
150K
4,1V
+8,5V
3585
3
8
4,2V
47K
2
4,2V
2575
1u
a
a
3589
2K2
3583
220R
a
a
D
3599
+8,5V
100n
100R
2670
2868
D
100n
8,3V
25
34
36
41
DGND
DVDD
DIGITAL SUPPLY
MUTE
VOLUME 2
32
REAR_L
FADER
40
ADDR
3577
3697
I2C_DATA
37
DATA
470R
3578
470R
3698
38
CLK
470R
470R
I2C_CLK
28
SMEXT
35
PAUSE
2517
19
CSM
a
100n
29
REAR_R
VOLUME 2
MUTE
FADER
39
CREF
REF
ANALOG SUPPLY
AGND
AVDD
27
33
43
42
a
7525
12V
8,5V
BC547B
+8,5V
+12A
9,1V
a
a
a
a
3584
220R
a
6514
+12
+12M
1N4003
12V
+12A
M
3629
+IS
+12A
BREF
ALC
820R
6V
a
a
9
10
11
12
2/4/2018
13
14
Incredible Surround Circuit
+IS
+IS
2607
100n
9,3V
3623
1,1V
7531
BC847B
47K
0,6V
2615
4,8
220p
a
a
a
0,6V
a
7533
BC847B
a
2609
3613
2611
3617
5K6
8K2
470n
1n8
3601
3615
3K3
5K6
+IS
a
a
+IS
2608
100n
9,3V
3624
1,1V
7532
47K
BC847B
2616
0,6V
220p
4,8V
0,6V
3602
a
a
a
7534
3K3
BC847B
2612
2610
3614
3618
a
5K6
8K2
470n
1n8
3616
a
a
5K6
3576
220R
REF
a
Level
7528
BC847B
4,2V
4,2V
ALC
3,4V
+C
+8,5V
12V
+12M
HPREF
6V
a
a
13
14
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