Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic A/V Receiver
Ò
Main PCB - IC2, 3 (STK4192)
2 CH HIGH POWER AMP(50W+50W)
R1
TR4
TR6
C1
R3
1 TR5
TR1
TR2
R4
2
TR6
TR3
R2
D1
TR10
7
R9
R8
TR11
3 5 6
Tuner PCB IC3 - (LA1265) AM/FM IF
17
19
18
RF
INTEGRATED CIRCUIT DIAGRAMS 4
12 11
TR17
TR7
TR18
TR16
R6 R15
D2 D3
TR19
TR7
TR20
R16
R6
8 9 10 13 14 4
15 1
FM - IF
LEVEL
DIT
MIX
Buffer REG
OSC
21 22 20
R10
TR15
C2
R12
18
TR13 TR12
7
TR14
R11
15 16
2 3 5 6
O D
LEVEL
DIT
AM - IF
GND
4
Video PCB IC3
(TA7291S) Motor driver
V V
CC REF
2 8
REG
PROTECTOR
9 1 5
IN 1
IN 2
INPUT OUTPUT
OUT 1
IN 1 IN 2 OUT 2
0 0
1 0 H
0 1 L
1 1 L
CCW: Countrer Clockwise direction
CW: Clockwise direction
7
V
CC
POST
AMP
S 1-7
DET
LED
DRIVER
SD
AGC
ADJ.
16 11 13
JSR-400
6
V
S
OUT1
2
M
3
OUT2
GND
MODE
STOP
L CW/CCW
H CCW/CW
L BRAKE
10
9
12
8
14
3 9