Analog Circuit - Philips FW-C798/21/37 Service Manual

ANALOG CIRCUIT

1701 F9 2705 A2 2712 B6 2719 C5 2726 D4
1710 C1 2706 A2 2713 A6 2720 D5 2727 A3
1730 A1 2707 A4 2714 B6 2721 C5 2728 E5
2701 B2 2708 B4 2715 A4 2722 D5 2729 A8
2702 B2 2709 A5 2716 C4 2723 C5 2730 B8
2703 A2 2710 B5 2717 C6 2724 D5 2733 A5
2704 B2 2711 A6 2718 D6 2725 D4 2734 C4
1
3735
REC_L
22K
PLAY BACK
3
DECK A
A
1730
3703
1
220R
2
A
3
A
3704
4
220R
3736
REC_R
22K
A
B
*
3701
5
220R
3702
REC/PB
DECK B
220R
1710
1
2
C
3
4
5
6
A
3784
1K
-C
D
6773
2786
100p
1N4148
+12
A
E
BC557B
7782
P
7 8
MT1 MT2
3770
6
3
5 1K5
2
1 4
3777
F
CLNS-2A833 YEZ
150R
5703
2743
ERASE
22n
A P
OSCILLATOR
A A P
1
9-7
2735 B3 2745 F5 2765 B4 2785 F1 3705 A4 3712 B4
2737 A6 2746 F8 2769 F7 2786 D1 3706 B4 3713 A7
2738 B6 2747 E8 2770 F8 2787 D3 3707 A5 3714 B7
2741 D6 2760 E3 2780 F3 3701 B1 3708 B4 3715 A6
2742 C3 2761 B5 2781 F2 3702 C2 3709 A4 3716 B6
2743 F1 2762 B6 2782 F2 3703 A2 3710 C4 3717 C6
2744 A4 2763 B6 2784 F1 3704 B1 3711 A5 3718 E6
2 3 4
2727
*
470p
3723
*
15K LEFT CHANNEL
*
A A
MODE
7710
HEF4952B
SELECTOR
15 7
A0 1A0
+C A
16 S0 9
A1 1A1
14 10
S1
A2
12 S2
11 S3 8
S4 -C
VSS
2 4
VEE
1
S0
A
3 S1 13
VDD
5
S2
6 S3
RIGHT
S4
A
CHANNEL
*
A
A2 A1 A0 S0 S1 S2 S3 S4
1
STOP 0 0 0 1
Pb deck A 0 0 1 1 1 A
1
Pb deck B 0 1 0 1
*
-- 0 1 1 1 1 1
REC in 1 0 0 1 1
Dubbing 1
1 0 1 1
-- 1 1 0 1 1
-- 1 1 1 1
6775
1N4148
3787
1M
7786
J111
B1
A
P
3781
4M7 3779
3780 330K REC B2
6774
1M
1N4148
A A
+C
3762 3761
820R 10K
A 6778
*
3769
*
BIAS
LEVEL
6K8
P 1N4148
+12
7783
BC847B
3771
6776
P
1K2
1N4148
*
2782
3786
P 7780
7781
BC847B
22K
4n7
BC847B
3776
6K8
P P
P P
2 3 4
3719 C6 3726 D5 3733 A2 3744 F8 3753 F5 3760 A7
3720 E6 3727 A7 3734 B2 3745 F8 3754 E8 3761 E3
3721 C6 3728 B7 3735 A2 3746 E8 3755 E7 3762 E2
3722 D6 3729 A7 3736 B1 3748 C8 3756 D8 3763 A5
3723 A3 3730 B7 3741 A6 3749 C7 3757 D8 3764 A5
3724 D5 3731 A7 3742 C7 3751 E5 3758 D8 3765 B6
3725 C5 3732 B7 3743 F8 3752 F4 3759 D7 3766 B7
5 6
3711 2713 3741
150K 3763 10u 2K2
2733
9793
3705 150K
5
12
470p
PC2 PC1
220R
10
2711
IN2
A
13
OUT2
100p
2715
3707
11
2737
NF2
A
14
100R
470u AN2
AN7323S
3764
100n
16 7720
+12 Vcc
ALCEN
2
220R
ALCC
A
3765
PB/REC
1
AMPLIFIER
39K
GND
A
15 3
A RF AIN1
3706
7
2738
IN1
220R
4
OUT1 100n
3708
6
NF1
100R
NC1 NC2
3712
8 9
A
150K
A
2734
470p
2719 3721 2717
* LH
33n 3K9 10n
3719 3717
2721 3725 12K 2K2
*
*
A
15 7
10R 3A0
6n8 A0
16 9
2723 S0
A1 REC
14 10
S1
A2 CRB
12
S2
15n 2741
11 S3 8
S4
P
A VSS
A 100n
2 4
2722
3726 VEE
A * * -C
1
S0
3 13
S1
10R
6n8 VDD +C
5
2724 S2
6 S3 7730
S4
HEF4952B
15n
2720 2718
3724 3722 *
*
A
15K 3K9
33n 10n
2728
* 3720 3718
12K 2K2
470p
REC EQUALISATION A2 A1 A0 S0 S1
NS Ferro 0 0 0 1
+5
HS Ferro
0 0 1 1
REC MUTE 0 1 0
REC MUTE
0 1 1 1
CRB
NS Chrome 1 0 0 1
HS Chrome 1 0 1 1
1A1 REC MUTE 1 1 0
--
1 1 1
3752
7791
BC847B
100K
P
A
ANALOG CCTRY
REC
1A0
L Not For ND/DD/FR
* See Variant Table for details
# For Provision Only
Note : Some values may varies, see respective parts list for correct value.
5 6
9-7
3767 A7 3774 E3 3781 D2 4794 C6 6774 D3 6786 B7
3768 E8 3775 F3 3784 D1 5701 D2 6775 C3 7710 A3
3769 E4 3776 F2 3786 F4 5703 F1 6776 F3 7720 A5
3770 F2 3777 F2 3787 C3 6770 E2 6777 E2 7730 D6
3771 F2 3778 E1 3788 C3 6771 E2 6778 E4 7740 A8
3772 F3 3779 D3 3789 F4 6772 D1 6782 C7 7780 F4
3773 E3 3780 D2 4790 C3 6773 D1 6785 A7 7781 F3
7 8
B1
3727 2729
*
LH
9791
5K6
22n B3
3713 3731
7740
HEF4952B
10R 8K2
15 7
A0
16 S0 9
3729
* A1
14 10
S1
3760
A2
12 S2
3K3
11 S3 8
120R S4
A
VSS
2 4
3732
VEE
1
S0
3 S1 13
8K2
VDD
5
S2
3730
*
6 S3
S4
3K3
2730
3728
* 9792
A
B4
5K6
22n
3714
A2
10R
-- 0
STOP 0
3742 -- 0
B2
REC 0
HS Chrome 1
2K2
ALCEN
Pb Chrome
1
--
1
6782
Pb Ferro 1
1A0
3748
1N4148
7787
BC847B
3749 2K2
REC
A
47K
+5
CONTROL LOGIC
7792 3756
CRA
BC847B
2A0 220K
3757
HS
220K
P
P
3754
*
3A0 HS
1M
S2 S3 S4
A
1
1
*
1
1
1 1 M 3768
1 -C
3746 10K
1 *
B4
1 1
3K3
1
+12
* 3745
B3
3K3
* *
A A A A
A
7 8
7782 E1 9791 A8
7783 E2 9792 B8
7784 D2 9793 A6
7786 C2
7787 C8
7791 F5
7792 D8
9
A
A
P
2A0
M
2A1
2A2
-C
PLAYBACK
+C
EQUALISATION
B
A1 A0 S0 S1 S2 S3 S4
1
0 0 1
0 1 1 1
1
1 0 1
1 1 1 1 1
0 0 1 1
1
0 1 1
1 0 1 1
1 1 1
C
D
1 2
E
7 -CMOS
TAPE-R
6
+12V
5
TAPE-L
4
A GND_A
3
2 REC-R
REC_R F
1 REC-L
REC_L
1701
TO/FROM AF
4 3
9