Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic A/V Receiver
Ò
Main PCB IC11 - (NJU9702) D/S DELAY
DIGITAL V
1
DD
OSCILLATOR INPUT 2
OSCILLATOR OUTPUT
3
REQ
4
SCK 5
DATA
6
IDSW
7
IDFLAG 8
TEST1
9
TEST2
10
DIGITAL GND 11
ANALOG GND 12
Terminal Description
Pin No. Symbol
V
1
DD
11
DGND
V
24
CC
12
AGND
19 REF
X
2
IN
X
3
OUT
4 REQ
5
SCK
6 DATA
7 IDSW
8
IDFLAG
18 CC1
17
CC2
9, 10 TEST1, 2
23 LP1IN
22 LPF1OUT
14 LPF2IN
13
LPF2OUT
20 OP1IN
21
OP1OUT
16 OP2IN
15 OP2OUT
INTEGRATED CIRCUIT DIAGRAMS 3
ANALOG V
24
CC
LPF1IN
23
LPF1OUT
22
OP1OUT
21
OP1IN
20
19
REF
REF
19
CC1
18
AUTO
CC2
17
RESET
OP2IN
16
OP2OUT
15
LPF2IN
14
LPF2OUT
13
Voltage Supply for Digital Block V
Digital GND DGND=0(V)
Voltage supply for Analog Block V
Analog GND AGND=0(V)
Analog Reference Voltage REF=1/2 × V
Oscillator Input Terminal
Oscillator Output Terminal
Data Request Input Terminal
Serial Data Shift Clock Input Terminal
Serial Data Input Terminal.
ID Switch (ID Code When Connect to the Common Bus)
ID Flag (Data Input Confirmation and Serial Data Output)
Current Control 1 Modulator
Current Control 2 Demodulator
Test Terminal (Normally Connects to the GND)
Lowpass Filter 1 Input
Lowpass Filter 1 Output
Lowpass Filter 2 Input
Lowpass Filter 2 Output
OP-AMP 1 Input
OP-AMP 1 Output
OP-AMP 2 Input
OP-AMP 2 Output
LPF1IN LPF1OUT OP1OUT OP1IN
23 22 21 20
4.7k
-
- -
+
+
+
OP1
LPF1
COMP
1/2 V
D1
CC
RESET MAIN CONTROL
CLOCK DELC
DELAY TIME
OSCILLATOR
CONTROL
2 3 4 5 6
XIN XOUT REQ SCK DATA
Functions
=5(V)
DD
=5(V)
CC
CC
OC1 OC2 OP2IN OP2OUT LPF2IN LPF2OUT
18 17 16 15
4.7k
MOD
DEM
-
+
OP2
DO0 DO1
M0
SRAM
M1
7 8 9 10 11 12
IDSW TEST1 TEST2 DGND AGND
IDFLAG
Connects to 2MHz ceramic Oscillator
ADM Controller
Input Side
Constitue a Lowpass
Filter with external C
and R.
Output Side
Input Side
Constitute an Integrator
with external C.
Output Side
JSR-400
14 13
-
+
LPF2
16K
1 24
VDD V
CC
3 8