Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic A/V Receiver
Ò
A B C
1
PACK1 R101
100
IF OUT
FM
ANT 7
1
FM FRONT END
FM GND
C428
ANT 3
2
ANT1 47/50
B+
6
VT OSC
GND
FM 4
C452
0.1u
5 8
R100
R564
AM
100 1/4
330
T1
VC1
AM ANT
SVC321
C39
0.01u
C302 0.022u
C202
R202
1/50
1K
+
R201
R204
220 10K C201
0.001u
R205
330
Q201
KTC3200 R207
R203
220
Q202 3.3K
2SK-246Y
R206
330
JSR-400 PAGE 45 - 1 of 2
A B C
JSR-400 SCHEMATIC DIAGRAM - TUNER BOARD
D E F
F101
R102
1.2K
R103
10.7MHz
2.2K
R565
Q101
47(1/4)
KTC3192
Q103
KRA101M
R107 R106
3.9K
390
T6
AM OSC
Q302
C437
KRA101M
0.022u
C441
R444
0.47/50
10K
IC2 LM7001
R14 9 8
B03 B02
100 1/4 12V
0.4V
10 7
AM IN
B01
11 1V
6
FM IN
1V
12 5
5.6K
DATA
VDD R556 470
13 4
5.6K CL
R557 470
14 3
R558 470
CE
2.5V
15 PD 2
XIN
2.5V
2.2V
16
1
XOUT C204
GND
2.2V
22p
X2
7.2MHz
C203
22p
1 2 3 4 5 6
D E F
G H I J
R562
R318
220
220 1/4
4
R104
F102
330
C317 5
C318
47/16
10.7MHz 0.022u T4 FM DET
Q102
KTC3192
R105
120
R313
56
F3
C434 C436
LZU450C4N
0.022u 0.022u
R333
330
LA1265
IC3
R305
10K
VR301
R441
10K
R304
22 1/4
10K
C322
C21
L202
0.15u
3.3uH FM ADJ. 3.3/50
10K
VR302
7 8 9 10 11 12
JSR-400 TUNER BOARD SCHEMATIC DIAGRAM
G H I J
K L M
3
2
1
R316 D402
C401
3.3K 1N4148
10/16 C413
680p
+
D302
R317
1N4148 C412
1K
10/16
R438
39K
R413
100K
R412
WA2
R307
100 1/4
C23 VR401
1K
1
3.3/50 220K
2
R306 C419
27K 47/16
F202
LPU450B
C402
T2 AM IF T
0.47/50
+
C404
3.3/50
R401
+
1K
+
C405
2.2/50
R411 10K
K L M
JSR400
O P
C414
680p
+
+
C430
C418 R407
R404
3.3K 2.2/50
2.2/50
5.6K
R416
100K R403
C417 C431
R408 5.6K
2.2/50 2.2/50
3.3K
+ +
R419
C403
100
0.047u
R405
1.8K
Q403
KRA101M
R406
1.8K
Q401
KTC3198
R418
100
JSR-400 PAGE 45 - 2 of 2
O P
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