Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic A/V Receiver
Ò
Main PCB IC10 - (NJW1102)
D/S DECODER
L Input
R Input
Main PCB - IC5
Video PCB - IC5 (LC4966)
QUAD BILATERAL SWITCH
V DD CONTA
14
13
SW
A
1 2
IN/OUT OUT/IN
SW A
INTEGRATED CIRCUIT DIAGRAMS 1
Input
Auto-
balance
Control
X1
X1
Noise
Sequencer
L+R
L-R
L+R L-R
(LC4966)
SW D
CONTD IN/OUT OUT/IN OUT/IN
11 10
12 9
SW SW
D B
3 4 5 6
OUT/IN IN/OUT CONTB CONTC
SW B
V V
LR CS
Lp
Adaptive
Rp
Matrix
Cp
Lt
By-pass Line
Rt
Modified
7kHz
Dolby
LPF
B.N.R.
S'
SW2
Noise seq.
Delay
Control PCB IC1 - (CXP82712)
POWER ON
SP FRONT
SW C
IN/OUT
8
R/C MUTE
SW
C
BY-PASS
1102 DATA
1102 SCK
7
V SG
Center/
Trimmer
Operating
Mode
Control
Trimmer
Sp
Pd
NEG/POS
Nor/Pha/Wi
CenterON/OFF
SIPO
2/3/4ch
STEREO
1 64
TUNED
2 63
+5V
3 62
NC
4 61
P/F DI
5 60
P/F CL
6 59
PLL CE
7 58
A-MUTE 8 57
9 56
10 55
VOL.UP
11 54
VOL. DN
12 53
PO.IND
13 52
14 51
VIDEO
15 50
VCR 16 49
KR 00
17 48
KR 01
18 47
KR 02
19 46
KR 03
20 45
DOLBY 21 44
22 43
23 42
24 41
REQ
25 40
7821 CE 26 39
T-MUTE
27 38
OPTION
28 37
RESET 29 36
X-TAL
30 35
X-TAL
31 34
GND 32 33
JSR-400
OUTPUTS
Left
Right
Center
CT
Surround
ST
Idsw
REQ
SCX
DATA
Digital GND
V
DD
+5V
NC
REMOCON
POWER OFF
OPTION 2
OPTION 1
OPTION 0
-27V
GRID 01
GRID 02
GRID 03
GRID 04
GRID 05
GRID 06
GRID 07
GRID 08
SEG 16
SEG 15
SEG 14
SEG 13
SEG 12
SEG 11
SEG 10
SEG 09
SEG 08 / KS01102
SEG 07 / KS1
SEG 06 / KS2
SEG 05 / KS3
SEG 04 / KS4
SEG 03 / KS5
SEG 02 / KS6
SEG 01
3 6