JBL JSR-400 - Page 67

H
H
J
I
LMK
O
O
P
P
LMI
J
K
+
+
+
+
+
+
+
++
+
+
+
+ +
+
JSR-400 TUNER BOARD SCHEMATIC DIAGRAM
1
2
12
R407
3.3K
C430
2.2/50
C418
2.2/50
C414
680p
C417
2.2/50
R408
3.3K
C431
2.2/50
R403
5.6K
R404
5.6K
R416
100K
R419
100
C403
0.047u
R405
1.8K
R406
1.8K
Q401
KTC3198
Q403
KRA101M
R418
100
C405
2.2/50
R411 10K
F401
ZTB456F11
C402
0.47/50
C404
3.3/50
R401
1K
T2 AM IF T
F202
LPU450B
R311 1K
R312
68K
R304
10K
C303
0.022u
C308
0.022u
FM ADJ.
C322
0.15u
D303
1N4148
C316 0.022u
R308
2.2K
R314
22K
10K
VR302
C312
0.022u
C21
3.3/50
C314
4.7/50
C313
10/16
R305
10K
VR301
10K
562
2
20
F102
10.7MHz
2
3
192
6
2
u
3
3
0
R318
220 1/4
T4 FM DET
R315
5.6K
R316
3.3K
R317
1K
3
2
1
4
5
C323
0.047u
C323
0.047u
C318
0.022u
C317
47/16
R313
56
F3
LZU450C4N
D402
1N4148
D302
1N4148
WA2
C23
3.3/50
R307
1K
C412
10/16
R413
100K
R412
100 1/4
VR401
220K
R438
39K
C401
10/16
C413
680p
R414 120K
R415 120K
R306
27K
12
13
14
15
16
17
18
19
20
21
22
11
10
9
8
7
6
5
4
3
2
1
LA1265
IC3
AM OUT
15V
0.7V
SD.ADJ
2.2V
2.2V
AGC
1.5V
0V
0V
AM INPUT
2.1V
3.8V
OSC
3.8V
BUFFER
2.6V
1.2V
FM OUT
4.7V
4.2V
TU-IND
0V
VCC
7.8V
7.6V
7.6V
GND
2.2V
2.2V
FM IF IN
2.2V
C419
47/16
C416
0.022U
IC4
LA3410
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
12V
INPUT
3.0V
3.0V
3.0V
L-OUT
3.0V
3.0V
R-OUT
3.0V
GND
OSC
2.7V
2.7V
PLL IN
2.7V
SP ADJ.
3.0V
2.7V
2.7V
ST.IND
5V
JSR-400 PAGE 45 - 2 of 2