6-1 6-1
MAIN BOARD
TABLE OF CONTENTS
Internal IC Diagram ............................................... 6-1 to 6-5
Main Board(5757) Layout Top View
................................
6-6
Main Board(5757) Layout Bottom V
iew
.......................... 6-7
Circuit Diagram - Main Board(5757)
...............................
6-8
HP Jack Board ................................................................. 6-9
Electrical Parts List ........................................................ 6-10
BLOCK DIAGRAM - RDS/RBDS PRE-PROCESSOR
SAA6588T
BLOCK DIAGRAM
MGK535
10
k
10
k
470
k
57 kHz
8th ORDER
BAND-PASS
PAUSE
DETECTOR
MULTI-PATH
DETECTOR
CLOCKED
COMPARATOR
SIGNAL QUALITY
DETECTOR
RDS/RDBS
DEMODULATOR
INTERFACE
REGISTER
POWER
SUPPLY
AND RESET
TEST
CONTROL
C10
C9
100 nF
DAVN
data
available
pause
output
multi-path
output
8
71918
11
2
9
10
VNICTUOCS
DDD
560 pF
OSCILLATOR
AND CLOCK
I
2
C-BUS SLAVE
TRANSCEIVER
I
2
C-BUS
RDS/RDBS
DECODER
multiplex
input
audio
inputs
level
input
4
4
SAA6588
TCON MRO
100
nF
C6
100 nF
C8
C11
C2
C3
20
14
13
16
R3
R2
2.2 nF
330 pF
LVIN
V
DDA
AFIN
MPX
C7
2.2
F
0.47
F
0.47
F
C1
3
1
OSCI
5
Q1
n
4.332
MHz
n = 1 to 4
OSCO
4
R1
C5
82 pF
C4
47 pF
1 k
MAD
12
V
SSD
6
R4
V
ref
V
SSA
17
15
5
5 V
5 V
PSWN
MPTH
SDA
SCL
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