JBL JSR 400 Service Manual ▷ View online
10
13
9
11
12
8
7
6
J
K
L
M
O
N
P
Q
R
I
47/16
C46
C45
47/16
R59
47
R58
47
+
+
+
+
+
+
+
+
+
5
5
9
4
4
8
3
3
3
7
2
2
2
6
1
1
1
BEFORE RETURNING THE RECEIVER TO THE CUSTOMER
LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS
SHOULD BE PERFORMED TO DETERMINE THAT EXPOSED PARTS
ARE PROPERLY INSULATED FROM THE SUPPLY CIRCUIT.
CAUTION TO THE SERVICE TECHNICIANS
1.25A/250V
1. ALL RESISTANCE VALUES ARE IN .
K -1000W. M -1000K .
2. THE WATTAGE OF RESISTORS IS 1/4W, 1/8W UNLESS OTHERWISE NOTED.
3. ALL CAPACITANCES VALUES ARE IN uF UNLESS OTHERWISE NOTED. P=uuF
W
W
W
W
*NOTE
CAUTION THE PARTS IDENTIFIED WITH THE IEC SYMBOL
MARKS ARE CRITICAL FOR SAFETY. REPLACE ONLY WITH
TYPE IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT OR SPECIFIED
IN THE “PARTLIST” DO NOT DEGRADE THE SAFETY OF THE APPLIANCE
THROUGH IMPROPER SERVICING.
JSR-400 POWER BOARD SCHEMATIC DIAGRAM
1.25A/250V
TO CONTROL
TO WA10
TO WA2
HEADPHONE PART
R83
330
C82
100P
CN10
TO MAIN
VIDEO L
GND SIG.
VIDEO R
VIDEO GND
VIDEO SIG.
L
R
6
5
4
3
2
1
CN5
R82
75
C80
33/16
C83
100P
R84
330
R53
680(1W)
VIDEO
JA1
VIDEO
C81
0.1u
C84
0.1u
L
G
R
R
JACK 3
R52
680
1W
C77
0.1u
CN11
+24V
POWER RELAY
GROUND CPU 5V
G
G
G
IC VCC
G
+ 15V
- 15V
1
3
2
VR1D
50KA
C5
4.7/50
R7
47K
1
2
3
4
R18
470
C15
4.7/50
R55
47
C
4
47
/
-15V
R13
1K
R16
47K
R11
8.2K
C9
100P
BALANCE
TONE PART
1
2
3
4
8
7
6
5
IC8
JRC4558DD
TREBLE
C61
332M
R73
2.2K
15V
3
1
2
C49
68P
C64
183M
R79
820
VR3A
100K*2
R72
1K
BASS
R65
3.9K
R66
100K
R63
22K
C48
823M
1
3
2
C52
153M
100*2
VR2A
C54
22/16
R71
100K
R67
100K
C60
100P
C59
4.7/50
R
INPUT
C56
4.7/50
4
4
5
5
6
6
100K*2
VR2B
100K*2
VR3B
C55
68P
R61
100K
R60
22K
C53
823M
C47
153M
R77
820
C63
183M
R70
2.2K
C58
332M
R75
100K
L
OUT
C62
4.7/50
R68
3.9K
C57
22/16
C51
4.7/50
C50
100P
R62
100K
L INPUT
R OUT
R74
1K
JSR-400 PAGE 44 - 4 of 4
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G
F
F
G
H
E
D
C
B
A
A
B
C
D
E
I
I
1
ANT1
FM
AM
1
2
FM
FM
+
+
+
+
+
+
+
+
+
JSR-400
1 2 3 4 5 6 7 8 9 10
12
11
R30
10
FM ADJ.
C322
0.15u
D303 1N4148
C316
0.022u
R308 2.2K
R314 22K
10K
VR302
C312 0.022u
C21
3.3/5
C313 10/16
R305
10K
VR301
10K
R441
22 1/4
L202
3.3uH
R556
470
R557
470
R558
470
C204
22p
C203
22p
X2
7.2MHz
IC2 LM7001
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
1
R444
10K
C441
0.47/50
C437
0.022u
B02
12V
B01
B01
DATA
CL
CE
XIN
2.2V
XOUT
2.2V
B03
0.4V
AM IN
1V
FM IN
1V
5.6K
VDD
5.6K
2.5V
2.5V
PD
2.5V
GND
GND
C302 0.022u
C104 0.022u
C103 47/16
R14
100 1/4
R417 220 1/4
R203
3.3K
Q202
2SK-246Y
ZD401 MTZJ5.6B
C422 0.022u
C421 47/16
R206
330
R207
220
Q201
KTC3200
R205
330
R204
220
R202
1K
C202
1/50
R201
10K
D1
1N4148
D2
1N4148
T1
AM ANT
CT1
20p
C438
STY470p
C39
0.01u
CT2
20p
VC2
SVC321
VC1
SVC321
5
4
8
R100
100 1/4
R564
330
R301 47K
R302 47K
C450
0.022u
PACK1
ANT
ANT
FM FRONT END
IF OUT
GND
B+
GND
OSC
VT
7
3
6
6
C452
0.1u
47(1/4)
R565
C428
47/50
R101
100
Q103
KRA101M
T6
AM OSC
R102
1.2K
F101
10.7MHz
R103
2.2K
R107
3.9K
Q101
KTC3192
R104
330
R105
120
R106
390
R562
220
F102
10.7MHz
Q102
KTC3192
C434
0.022u
C436
0.022u
R333
330
Q302
KRA101M
R318
220 1/4
C318
0.022u
C317
47/16
R313
56
F3
LZU450C4N
12 13 14 15 16
11 10 9 8 7
LA1
IC
AM
OUT
15V
0.7V
SD.ADJ 2.2V
2.2V
AGC 1.5V
1.2V
FM
OUT 4.7V
4.2V
TU-IND
0V
VCC 7.8V
C201
0.001u
JSR-400 PAGE 45 - 1 of 2
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JSR-400 TUNER BOARD SCHEMATIC DIAGRAM
1
2
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 ZTB456F1
1
C402
0.47/50
C404
3.3/50
R401
1K
T2 AM IF T
F202
LPU450B
R31
1
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
220
F102
10.7MHz
2
3192
6
2u
33
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
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JSR-400 TUNER BOARD SCHEMATIC DIAGRAM
1
2
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 ZTB456F1
1
C402
0.47/50
C404
3.3/50
R401
1K
T2 AM IF T
F202
LPU450B
R31
1
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
220
F102
10.7MHz
2
3192
6
2u
33
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