Philips MCM277, Service Manual

Page: 18 / 66

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 View .......................... 6-7
Circuit Diagram - Main Board(5757) ............................... 6-8
Main Board(5762) Layout Top View ................................ 6-9
Main Board(5762) Layout Bottom View ........................ 6-10
Circuit Diagram - Main Board(5762) ............................. 6-11
HP Jack Board ............................................................... 6-12
Electrical Parts List ........................................................ 6-13
BLOCK DIAGRAM - RDS/RBDS PRE-PROCESSOR
SAA6588T
BLOCK DIAGRAM
MGK535
10 k
"
10 k
"
470
k
"
57 kHz
8th ORDER
BAND-P
ASS
P
AUSE
DETECT
OR
MUL
TI-P
A
TH
DETECT
OR
CLOCKED
COMP
ARA
T
OR
SIGNAL
QUALITY
DETECT
OR
RDS/RDBS
DEMODULA
T
OR
INTERF
ACE
REGISTER
POWER SUPPL
Y
AND RESET
TEST
CONTROL
C10
C9 100 nF
DA
VN
data available pause output multi-path output
8
7
19
18
11
2
9
10
V
NI
C
T
U
O
C
S
DDD
560 pF
OSCILLA
T
OR
AND CLOCK
I
2
C-BUS SLA
VE
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
C1
1
C2 C3
20 14 13 16
R3
R2
2.2 nF
330 pF
LV
IN
V
DDA
AFIN MPX
C7 2.2
嘕
F
0.47
嘕
F
0.47
嘕
F
C1
3
1
OSCI
5
Q1
n
h
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