MIDDLE
BASS
VOLUME 2
FADER
MUTE
LOGIC CONTROL
DIGITAL SUPPLY
ANALOG SUPPLY
MUTE CONTROL
I2C INTERFACE
SOURCE SELECTOR
TREBLE
LOUDNESS
VOLUME
IN GAIN
MUTE
FADER
VOLUME 2
BASS
MIDDLE
TREBLE
LOUDNESS
VOLUME
IN GAIN
CHANNEL
LEFT
RIGHT-
CHANNEL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
E
F
G
H
I
J
AUX_IN
LINE_OUT
a
BC847B
7527
2528
a
3n3
3515
1K
3522
7529
BC857B
3550
47K
a
120K
3545
1K5
2541
1u
2M2
3558
NJM4560M
7512-A
3
2
1
3564
2K7
4M7
3598
4619
2610
470p
2595
3596
100K
3519
33K
220R
3584
8
NJM4560M
7512-B
5
6
7
3579
4R7
a
3615
5K6
2K2
3582
2618
a
+12A
a
3608
10K
5K6
3611
2511
100n
3K3
3517
7533
BC847B
4K7
3566
3606
220K
YKC21-3440
1526-A
5
4
3
470n
2574
33n
2602
M
10K
a
2K2
3626
1K
a
3K3
3544
3525
2K7
+12A
FE-BT-VK-N
1521
3624
a
22K
3592
2615
150R
2552
47u
1u
2624
+12A
3554
3520
33K
a
a
a
a
a
3589
1n
2579
6514
1N4003
3530
2K2
22p
2524
2591
220u
100K
3533
a
680p
2536
470n
2K2
3529
4K7
3569
2871
22n
4536
100n
2868
2M2
3559
3560
4M7
a
1u
2575
2521
4u7
a
a
4618
a
a
2527
470p
1K2
a
4K7
3570
a
3556
2604
3n3
3613
5K6
a
3580
+IS
3557
a
2K7
82K
33K
3595
a
3618
8K2
4u7
2513
10n
2677
a
3528
1K
15p
100n
2670
1K
3511
2537
220n
2563
15p
2538
150K
3588
5
6
7
4
a
10p
2547
7513-B
NJM4560M
3537
33K
+IS
12K
3687
2608
100n
3577
470R
8K2
3620
a
6512
BZX79-C9V1
2626
220p
2612
1n8
a
12K
3686
2623
1u
3576
220R
3572
4K7
10p
2548
BC847B
7524
a
150K
3551
a
100n
2512
100R
3599
1525-A
YKC21-3440
5
4
3
a
4535
220u
2592
a
47K
3585
a
47u
2593
2641
100u
2549
4u7
+12M
3521
18K
3538
33K
2616
220p
1K
3625
2n2
a
a
a
2544
a
a
D
2535
680p
+12
a
2529
100n
a
220R
3575
150K
a
BC547B
7525
3552
8K2
3617
2543
2n2
2601
33n
4K7
3574
3628
3573
4K7
a
1526-B
YKC21-3440
5
2
1
2614
1n
1u
2869
a
2K2
3K3
3601
a
3531
3591
22K
a
3612
5K6
STEREO_1L
8
STEREO_1R
17
STEREO_2L
9
STEREO_2R
18
STEREO_3L
10
STEREO_3R
15
STEREO_4L
7
STEREO_4R
44
TREBLE_L
1
TREBLE_R
FRONT_R
20
IN_L
2
IN_R
12
LOUD_L
4
LOUD_R
22
MID_IN_L
31
MID_IN_R
23
MID_OUT_L
30
MID_OUT_R
11
MONO
21
MUXOUT_L
3
MUXOUT_R
35
PAUSE
32
REAR_L
29
REAR_R
28
SMEXT
16
AVDD
24
BASS_IN_L
26
BASS_IN_R
25
BASS_OUT_L
27
BASS_OUT_R
38
CLK
39
CREF
19
CSM
37
DATA
36
DGND
13
DIFF_GND_L
5
DIFF_GND_R
14
DIFF_L
6
DIFF_R
41
DVDD
34
FRONT_L
33
TDA7437
7511
40
ADDR
43
AGND
42
4K7
3642
100n
2671
1n
2613
3527
1K
8K2
3621
2598
220p
3622
8K2
3616
5K6
a
4517
a
4518
47K
BC847B
7534
1K5
3546
150K
3587
a
3643
4K7
3565
4K7
a
+12M
2531
22n
2539
100p
+IS
820R
3629
1N4148
6515
3563
2K7
+12A
a
47K
3623
3605
220K
3553
330K
3539
33R
1M
3597
2532
47u
10K
3607
a
4u7
2550
3571
4K7
3590
2K2
18K
3548
BC847B
7528
a
3583
220R
DIPMATE
21
1
2
3
4
3540
10K
3609
470R
220p
2597
470R
3697
3698
2540
220u
2551
100n
2515
100p
BC847B
7531
1
2
3
4
5
2581
2n2
2784
100p
a
100n
2517
0u47
2560
a
+12A
a
47K
3586
3K9
3668
3581
2K2
2571
D
0u47
2676
220n
4u7
2534
10K
3610
2580
1n
a
3547
18K
BC847B
7521
a
18K
470p
a
3512
2603
+12A
a
1525-B
5
2
1
0u47
2675
YKC21-3440
3535
2594
47u
100n
2545
3604
680K
3614
5K6
3541
1K
100u
2621
a
NJM4560M
7513-A
3
2
1
8
DIPMATE
1
2
3
4n7
2872
470n
2609
26
15p
2553
2n2
a
2578
8K2
3619
4u7
2533
390R
3555
2876
470u
a
2519
100u
a
+IS
100p
2583
470p
2605
BC857B
7526
a
2542
1u
3542
2596
470p
1K
100K
3534
680K
3603
120K
3536
2606
470p
100n
2607
2673
22n
220p
2625
2874
22n
4n7
2873
7523
BC847B
3667
3K9
3K3
3543
+12A
470R
3578
2577
2n2
2582
100u
+IS
100n
2672
220n
2572
2573
470n
3K3
3602
3526
220n
2564
470R
3689
2K7
2K2
3532
2576
1u
a
a
a
BC847B
7522
a
7532
BC847B
D
2674
22n
2523
22p
1u
2870
3513
1K5
220p
1n8
2611
I2C_DATA
I2C_CLK
CDR_Rec_L
AUX_L
AUX_R
CDR_PB_L
TUNER_L
K_OUT
CDR_Rec_L
CDR_Rec_R
AUX_L
AUX_R
CDR_PB_R
CDR_PB_L
L_OLEFT
L_OLEFT
CDC_L
3516
3K3
3518
2522
4u7
4u7
2514
2516
100p
2520
100p
470R
3688
470R
3514
1K5
CDR_PB_R
CDC_R
REF
ALC_EN
REF
BREF
HPREF
CDR_Rec_R
CDR_Rec_L
CDR_Rec_R
MUTE_LO
BREF
SA_IN
K_OUT
K_OUT
BREF
+8,5V
+8,5V
4
+8,5V
470R
4578
for FW-R7 only
BREF
+8,5V
+5V
3773
1K
+C
Level
ALC
ALC
ALC
TUNER_R
Circuit Diagram AF7 Board
6V
6V
6V
4,1V
8,3V
4,2V
4,1V
4,2V
4,2V
4,1V
4,2V
8,5V
4,2V
4,1V
9,1V
12V
4,2V
4,1V
5V
0V
0V
0,6V
5V
6V
6V
0,6V
6V
0V
0V
0V
1,3V
3,4V
12V
12V
6V
6V
4,2V
4,2V
0,6V
0,6V
4,8V
9,3V
1,1V
0,6V
1,1V
9,3V
4,8
0,6V
To and from Tuner Board
To and from Microphone Board
To and from CDR Module
Bass ALC Circuit
Bass ALC Circuit
Incredible Surround Circuit
8-4
8-4
www.freeservicemanuals.info
2/4/2018
Digitized in Heiloo Netherlands