Table of Contents
Advertisement
SA-VK825DEE
20.3. (B) Main (Tuner) Circuit
SCHEMATIC DIAGRAM - 9
MAIN (TUNER) CIRCUIT
FM EXT
ANT
1
1
UNBALANCED
75 OHM
2
2
GND
3
3
AM LOOP ANT
AM EXT
4
4
ANT
JK2601
5
G2A411C00001
R3610
1K
R3614
5.6K
C2633
27P
C3610
0.01
R2652
0
C2634
27P
TUNER PACK CIRCUIT
2.2P
5.6P
2SK544
2SC2786M
1.2U
1000P
100K
100K
180P
220
100K
560K
4.7P
2.2P
D2602
C2636
B0CDBB000015
1000P
6
1
2
4
3
L2601
L2602
R3619
G2BPC0000016
3.3K
R3612
C3608
100K
8P
C3607
0.047
R3611
390
C2625
16V22
C3611
50V4.7
R3616
C2612
1K
0.01
20
19
18
17
16
15
IC2602
LC72131MDTRM
PLL FREQUENCY SYNTHESIZER
1
2
3
4
5
6
R2638
3.3K
R2630
10K
: +B SIGNAL LINE
: FM SIGNAL LINE
: FM/AM SIGNAL LINE
: FM OSC SIGNAL LINE
CF2601
J0B1075AA014
0.47U
7
1
3
C3604
1000P
390
2
R3605
470
1000P
6
390
390
C2601
C3602
0.01
16V10
2SC1675l1l2
680K
5.6P
8
2.2P
2SC2787FL1TA
R3620
C3609
C2614
1000P
50V3.3
IC2601
LA1833NMNTLM
FM/AM IF AMP
DET/AM OSC MIX/FM MPX
24
23
22
R3618
3.3K
1
2
3
C3606
C2627
C2626
0.01
16V22
1
3
2
4
1
5
6
Z2602
G2BAD0000003
R2628
82
R3617
47K
R2629
27K
C2624
100P
14
13
12
11
R2632
10K
7
8
9
10
88
: AM SIGNAL LINE
: AM OSC SIGNAL LINE
R3604
1K
C3603
0.01
CF2602
J0B1075AA014
3
1
R3601
R3606
0
470K
2
Q2601
B1AABC000003
FM IF AMP
R2621
R3603
270
C2620
22K
16V10
C2638
0.01
R2643
22K
C2619
680P
47K
21
20
19
18
17
16
15
14
13
IC2601
5
6
7
8
9
4
10
11
12
C2647
1000P
C2648
0.01
R2626
1K
C2649
C2629
0.1
6.3V100
R2633
1K
W2919
0
Q2606
B1GCCFJJ0016
TUNER 15V
SUPPLY SWITCH
R2646
C2617
5.6K
0.01
C2644
6800P
R2642
6.8K
C2642
R2641
50V1
6.8K
C2641
50V1
R2645
5.6K
C2643
6800P
C2621
50V0.47
C2623
50V1
R2644
120
R2631
120
TUNR
A
CE_T
B
TUL
C
TO
PLLDA
D
MAIN
DO/ST
CIRCUIT
E
PLLCK
(1B) ON
F
SCHEMATIC
TGND
G
DIAGRAM - 15
15V
H
TU_SD
I
+7.5V_T
J
1A
Advertisement
Table of Contents
