Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic Ò A/V Receiver
A B C
JSR-400 PAGE 44 - 1 of 4
1
C17
33/16
+
VCR IN
1
R21
2
75
Q4
KTA1266
3 R27
1.2K
C18
R22
5.4V
470/10
75
+
VCR REC
C23
2 R26
4.1V 1P
1.2K
4
R28 R29
180
3 150
JACK2A
Q5
KTA1266
R23 C19
75 470/10
+
MONITOR C24
1
1P
2
R37
C84
180
100000P
4
VIDEO PART
5
6
FU4
5A/250V
7
C35
CN99 472P/400V
WA3
1 1
2 2
CN100
CORD1
8
WA4
120V/60Hz
1 1
2 2
C88
0.1/275V
TRANS
R41
CN88
3.3M/0.5W
USE ONLY UL
1
2 TO WA8
THER. FUSE
9
3
CN11
WA5
1 1
2 2
3 3
10 1 1
VKK
2 2
3
3
FLT
4
4
CN77 WA2
POWER TRANSFORMER
11
12
13
JSR-400 PAGE 44 - 3 of 4
A B C
JSR-400 SCHEMATIC DIAGRAM - POWER SUPPLY/VIDEO/TONE/HEADPHONE/VOLUME PCB's
D E F G
Q6
2SK117
R25
3V 1M
CN9
R30 R1 6V
1
12K 100K
G
6V 2
VCR CPU TO WA9
3
VIDEO CPU
4
2.5V
VIDEO IN
C22 5
100/10 R35
R31
12K
8.2K
R36
1.2K
C89
0.1u
R34
1.2K
R32
R33
8.2K
150 R20
100K
TO CPU
R40
0V
1K 4.5V
Q7
KTC3198 0V
RY1B
D11
1N4148
R44
R3B D4 R45
1K
10/1W 1N4148 1K
5.1B
IC5 DZ3
D7
R39
FU3 7B06
1N4148
315MA/250V 10/1W 12V
6V
I 0
D8 1 G 3
1N4002L
C33 2
D10
TRAN 1 100000P
1N4002L
C25
22/16 C26
22/16
C36
470/25V
SUB C32
D9
100000P
1N4002L
IC9
D5 R81
7806
1N4002L 10 1W
6V
24V
0
I
1 G 3
2
FU1 C31 C78
1.6A/250V 220/25 10/50
FU2
D6
1.6A/250V
1N4002L
IC6
D17 R46
C40 7815
1N4002L 2200/25V 10(1W)
15V
I 0
D20 1 G 3
20V C41
1N4002L 25V
2 22
D18
16
1N4002L
R47
1
10(1W)
20V
G
I 0
2
C39 3 C42
D19 -15V
2200/25V -25V 22/16
IC7
1N4002L
7915
C27
47/35V
D3
R42
DZ2
R80
1N4002L 330
220 126
DZ1
C29
27B
D2 47/35V
1N4002L C28
R43
47/35V
100K
POWER SUPPLY PART
D E F G
H I J K
VOLUME PART
IC3
TA72915
15V
R51 R2
100 4.7
C3
47/16
C4
47/16
MOTOR
C1
100/10V
CN4
VO UP
1
VO DO
2
C8
3
4.7/50
15V
VR1 +
4
50KA
G
5
R9
-15V
6
100K
TO WA3
REAR
7
5V
8
CENTER
9
G
10
C7
R
11 VR1B 4.7/50
+
G
50KA
12
L
C10
R8
13
100P
G 47K
14
C6
VR1C 4.7/50
+
50KA
R6
47K
C5
VR1D 4.7/50
+
50KA
R7
47K
R11
8.2K
R13
1K
CN11
+24V
1
POWER RELAY
2
GROUND CPU 5V
3
G
4 TO WA10
G
5
IC VCC
6
G
7
+ 15V
8
- 15V
9
CAUTION TO THE SERVICE TECHNICIANS
1.25A/250V 1.25A/250V
WA1
HOLD 5V *NOTE
1
-27V 1. ALL RESISTANCE VALUES ARE IN .
2
G
3
TO CONTROL
AC 5V 2. THE WATTAGE OF RESISTORS IS 1/4W, 1/8W UNLESS OTHERWISE NOTED.
4
AC 5V 3. ALL CAPACITANCES VALUES ARE IN uF UNLESS OTHERWISE NOTED. P=uuF
5
H I J K
L M N
TO WA11
CN3
R3
10K R4
5.6K
R59
47
VR1
C2
100/10V
CN7
C16 WA7
4.7/50
L
L
+
1 1
G G
2 2
R14 R R
3
3
100K
IC2
NJM4558DD
C13
R15 4.7/50
+
100K
C12 R54
47/16 47
R10
R57
15V
8.2K
47
C11
R12
47/16
1K VR4B
+
100KMN*2
C43
C14
+ 4.7/50 47/16
R19 VR4A
R17 470 100KMN*2
IC1
R56
47K
NJM4558DD
47
R55
BALANCE
47
C15
4.7/50
+
R18
R16 470
C9
47K
100P
-15V
R72
15V
1K
C62
CN10
4.7/50
R83 C82
+
330 100P
VIDEO L
L 1
1
GND SIG.
VIDEO 2
2 R75
VIDEO R
100K
3
VIDEO GND
R 4
3 VIDEO SIG.
C83
R84
5
4 100P
JA1 330
C80
C63
33/16 TO MAIN 183M
+
VIDEO
5
R82
6
75
CN5
R53
680(1W)
L
1
G
2
R52 JACK 3
R
3
680
1W
TO WA2
HEADPHONE PART
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.
W
K -1000W. M W W -1000K . W
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
L M N
JSR-400
O P Q R
JSR-400 PAGE 44 - 2 of 4
1
2
47/16 47/16
C45 C45
C46 C46
47/16 47/16
-15V
15V
R58 R58 L G R
WA6 3
47 47
CN6
L G R
4
5
4
5
6
3
2
1
R OUT
R74 6
1K
TREBLE BASS
R63
R71
22K
100K
C61 R73 C49
332M 2.2K 100*2
68P
C52
VR2A
1
1
153M
VR3A R67
C59
100K*2 C54
100K
C64 2 2 4.7/50
C48 22/16
3
3
183M 7
823M
R66 R65 C60
R79
100K 3.9K 100P
820
IC8
TONE PART
JRC4558DD
C56
4.7/50
8
C58 C55
R60
332M 68P
22K
R70 C47
2.2K 4
153M
4
100K*2
100K*2
5 VR2B
5
VR3B
6
6
C53
823M
R77
820 9
R61
100K
R68
C50
3.9K 100P
R62
C51 100K
C57
4.7/50
22/16
10
L INPUT
11
12
13
JSR-400 PAGE 44 - 4 of 4
O P Q R
4 4