Philips FW-C870 Service Manual page 105

DPL CIRCUIT DIAGRAM
1711 A10 2718 D2 2727 A4 2737 A5
1712 C1 2719 A3 2728 A4 2738 A6
2711 A2 2720 A3 2729 A4 2739 A6
2712 B2 2721 A3 2730 A4 2740 B7
2713 A2 2722 A3 2731 A5 2741 B7
2714 B2 2723 A3 2732 A5 2742 B7
2715 A2 2724 A4 2733 A5 2743 B7
2716 B2 2725 A4 2734 A5 2744 C7
2717 C2 2726 A4 2735 A5 2745 C7
1 2
Note : Some values may varies, see respective parts list for correct value.
# : Provision.
1
a
2
surr_out
3
LCH
A
4
a
LT
5
3717
DPLREF
a
6
RT 27K
7
RCH
2711
8
+12A
9 100n
+8.5V 2716
10
a
680p
dd
11
+5V
3718
B
12
DPL_V_CLK 27K
DPLREF
13
DPL_CLK
2712
14
DPL_DATA
100n
15
DPL_GND
16
DPL_REQ
17
ALC_EN
3715 DPLREF
C
1712
DPLREF 27K
TO AF8
DPLREF
2717
3711 3763
+8.5V
LT
10u
820R 3K9
a
2718
3712 3764
RT
5713
820R 3K9
10u
D
DPLREF
a
3716
7715
DPLREF 27K
+8.5V BC847B
+5VA
8.5V
4.8V
DPLREF
5.4V
dd dd
E
a2 a2 a2 a2
DPL_CLK
DPL_REQ
DPL_DATA
1 2
13-3
2746 C7 2755 E7 2764 C10 2773 A7 2782 D7
2747 C7 2756 E8 2765 C2 2774 B8 2783 E3
2748 C7 2757 E8 2766 D2 2775 A8 2784 E3
2749 D7 2758 D9 2767 D3 2776 C8 2785 A6
2750 D7 2759 D5 2768 E3 2777 A8 2786 A6
2751 D3 2760 D9 2769 D3 2778 C8 2787 A6
2752 D3 2761 E1 2770 C2 2779 A9 2788 A6
2753 D4 2762 E1 2771 B8 2780 B9 2789 E4
2754 E6 2763 E1 2772 B8 2781 D7 2790 E5
3 4
2715
a a a a a a a a
680p
3719
47K
3721
64 63 62 61 60 59 58 57 56 55 54
6K8
65
LOG
FULL WAVE DUAL-TIME CONSTANT
DIFFERENCE
RECTIFIER AND THRESHHOLD SWITCHES
AMPLIFIERS
66
3720 67
BPF
68
47K
69
BPF
3722
70
L C R
6K8
71 AUTO
SELECTOR
CENTER
BALANCE
72 MODE
VCA
CONTROL
73
SERVO
L R C
2770
74
75
47u
3723 AVcc
+ - + -
76 +
/
-
M M
2M2 VREFA
+8.5V
77
SELECTOR 3
78
79
a
a
80
AGND
+
VOL VOL
-
2u2
3724
a
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
100K
2767
a
a
10u a
3725
220K
a
2768
dd
a
LCH
4n7
a
dd
dd 2783 RCH
dd
2784
470p
470p
3772
1K 3773
1K 3774
1K
3 4
2791 A10 2800 D10 3718 B2 3727 A6
2792 E10 2801 D7 3719 A2 3728 A6
2793 E2 3711 C1 3720 B2 3729 A6
2794 E2 3712 D1 3721 A2 3732 E4
2795 E2 3713 D1 3722 B2 3733 E4
2796 E3 3714 D1 3723 C3 3734 E6
2797 A8 3715 C2 3724 D3 3735 D6
2798 B8 3716 D2 3725 D3 3736 A6
2799 B10 3717 A2 3726 A5 3737 D9
5 6 7
3727
3728
a a
3729 12K 12K
47K
a a a
3736
47K
2737
a a a a
220p
a
7711
M62460FP
53 52 51 50 49 48 47 46 45 44 43 42 41
40
VOL
MODIFIED -
B-TYPE +
NR DECODER 39
+9.2dB
38 2741
37
10n
+9.2dB
36
+
35 2743
34
2744
100n
33
100n
SELECTOR 2
32
31
-9.2dB ATT 30
S
29
2747
+
28
10n
27 2801
26
100n
CLK
VREFD
MCU Interface
25
DVdd
AVdd
DATA SCK REQ
TEST
DVss AVss
2749
CNT
20 21 22 23 24
100u
a2
2782
1K 22n
2759
2781
3735
dd
100n 22n
3754
2790
1M
5711
470u
+5V
3746
CST
MUTE_C MUTE_S
1K
+5V 0.1V
dd
5 6 7
13-3
3738 E1 3748 E7 3759 A9 3774 E3 5712 E5
3739 A9 3751 B9 3760 C9 3775 E9 5713 D2
3740 B9 3752 B9 3761 A8 3777 B9 6711 E1
3741 A9 3753 B9 3762 C8 3778 D10 6712 D7
3742 C9 3754 E6 3763 C1 3779 B10 7711 A7
3743 A10 3755 A8 3764 D1 3780 C10 7712 D8
3744 C10 3756 B8 3765 C10 4628 D8 7713 A9
3745 D5 3757 B8 3772 E3 4734 E9 7714 C9
3746 E7 3758 B8 3773 E3 5711 E6 7715 D1
8 9
2777
560p
3761 3759
CSref
10K 3K3
5.7V
4
a
2779
2
5.7V
3739
7717-A
2773
1K
1 2u2
3755
NJM4556AM
8
5.7V 3 0V
10K 3741
4u7
# 2797
11.5V
1K
REF_d 7713
47p BC847B
a
0V
4.9V
a
CSref
7719
+12A
BC857B
a2
# 2798
3777
a
a a
5.7V
10K
47p
REF_d
2774
NJM4556AM
3756
+5V
5 3740
8
2780
a2 1K
5.7V
10K
4u7
7
7717-B
a2
6 2u2
3742
a
4
5.7V
3760 1K 0V
BC847B
12K
7714
3762 2778
CSref
10K
470p
a2
a2 3737
+5VA
2750
22R
a
22u
4628 # 9712
+5VA
a
a2
a2 a2
6
5V
1
2.5V
VCC
a2
2
a
+5V
2.5V
DPL_GND 7712
VREF
M62429FP
7
+5V
8
LOGIC CTRL
2.5V
4.8V
GND DATA CLK
ALC_EN
3 4 5
7716
BC847B
0V
4734
dd
a a2
DPL_V_CLK
8 9
7716 E7
7717-A A8
7717-B C8
7719 B9
7720 D10
9712 D9
10
a
EH-B A
1711
3
0V
CENTRE
a 2
1
SURR
0V
a
3779
MUTE_C
100R
B
10u
dd
2799
0V 1K
3765
0V
C
surr_out
a a a
MUTE_S
0V
3780
4.9V
100R
7720
BC857B
10u
3778
10K
2800
D
dd
+5V
2.5V
a
a2
2792
E
100p a2
3139 118 53240...86350 for...3426 pt3 dd wk0033
10
SPR 00 0140