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A
B
DRX-1
1
SCHEMATIC DIAGRAM
ANALOG: TUNER / DEMODULATOR
1700 B5
2700 A3
2705 A9
2710 A8
2715 D7
1701 C5
2701 A4
2706 A7
2711 C3
2716 A3
1702 D5
2702 A4
2707 A10
2712 D3
2717 A1
1703 E10
2703 A7
2708 A10
2713 A1
2718 E8
1705 B2
2704 A7
2709 A8
2714 D7
3700 A3
1
2
2
Tuner/Demod.
33STBY
A
I759
3711
I760
3
I758
1705
UV1316K
1
GNDFV
GNDFV
AGC
2
B
TU
3
GNDFV
AS
3720
I756
4
SCL1
SCL
100R
5
4
SDA
3716
I757
SDA1
GND
100R
12 13 14 15
F702
C
GNDFV
5
D
7708
PDTC124EU
6
E
PSS
H
H
L
L
SB1
L
L
L
H
SAWS
L
H
H
H
TS
H
L
L
L
1
2
7
162
C
D
A, B, G model
3701 A6
3706 A8
3711 A1
3716 C1
3721 E10
3726 D9
3702 A9
3707 A7
3712 D4
3717 E8
3722 E9
3727 E8
3703 A2
3708 A4
3713 D5
3718 E4
3723 E7
3728 E8
3704 A4
3709 A9
3714 C4
3719 C2
3724 D7
3729 E5
3705 A9
3710 D10
3715 D10
3720 B1
3725 E9
3730 E5
3
4
F705
5SW
5SW
I762
2701 I720
I703
120p
GNDFV
GNDFV
2702
220p
I763
7
9
GNDFV
VCC
+33V
I704
11
IF
8
NC|ADC
10
PDTC124EU
NC
GNDFV
6
2711
F700
PDTC124EU
1n
5SW
GNDFV
F701
GNDFV
5SW
I764
2712
I752
1n
I753
6702
I751
GNDFV
1SS356
GNDFV
7707
GNDFV
BC847BW
GNDFV
3
4
E
F
4701 C4
5702 A5
5707 E10
7700 A10
7705 E7
4702 E5
5703 B9
6700 B4
7701 B5
7706 E9
5009 E9
5704 E3
6701 C4
7702 C5
7707 E4
5700 A2
5705 A1
6702 E4
7703 B7
7708 D2
5701 A10
5706 A3
6703 E6
7704 D10
7709 E9
5
6
7
I701
3701
GNDFV
680R
40,4-ADJUST
7KMY
5702
AGC-ADJUST
4
3
2
6
1
8
7
I709
GNDFV
F704
1
4
3,3V
1700
7703
OFWK3953M
22
3,3V
2
5
3
7701
14
TUNER
F703
AGC
GNDFV
I706
1
4
3,3V
1
VIF
I707
1701
3,3V
2
AMPLIFIER
7702
OFWG3956M
I708
2
5
3,2V
23
SIF
3
3,2V
24
AMPLIFIER
GNDFV
SIF
INTERCARRIER
MODE SWITCH
AGC
5SW
2,8V
5
I741
1702
OFWK9656M
1
4
2
5
GNDFV
GNDFV
GND
5SW
3
GNDFV
GNDFV
7705
3729
BC847C
5K6
6703
MCL4148
GNDFV
GNDFV
5
6
7
G
H
F303 B10
F704 B5
I706 C5
I711 A7
I718 A10
I732 E9
F700 C3
F705 A4
I707 C6
I712 B8
I719 E7
I733 E10
F701 C3
I701 A6
I708 C6
I713 A8
I720 A4
I734 D10
F702 C2
I703 A4
I709 A7
I714 B8
I730 E10
I735 E8
F703 B6
I704 B4
I710 B7
I717 A9
I731 E10
I736 D9
8
9
I717
3702
GNDFV
GNDFV
5K6
5SW
AFC-ADJUST
8
7
6
1
2
2710
4
3
8p2
7KMY
5703
N750
15
4
6
7
19
18
17
TDA9818
VIF
AGC
AFC
DETECTOR
VCO
FPLL
TWD
VIDEO DEMODULATOR
AND AMPLIFIER
QSS MIXER
INTERCARRIER MIXER
AM DEMODULATOR
FM-PLL DEMODULATOR
5,2V
3
2V
12
13
9
I736
I739
5SW
3715
GNDFV
100R
7709
GNDFV
BC847BW
I735
I732
1
7706
BC857BW
GNDFV
GNDFV
GNDFV
8
9
I
J
I737 D10
I753 E4
I760 A1
I739 D7
I756 B1
I761 A1
I741 D7
I757 B1
I762 A3
I751 E4
I758 B1
I763 A3
I752 D4
I759 A1
I764 D3
10
TU
I718
0V
5SW
SB1
7700
A
PDTC124EU
GNDFV
AFC
GNDFV
GNDFV
GNDFV
21
20
B
VOLTAGE
REFERENCE
16
2V
C
8
10
11
3710
I734
D
100R
I737
BC857BW
7704
I733
I730
5707
15u
1703
E
3721
3
270R
I731
2
TPS
GNDFV
10
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