Magnavox ZC352MW8A, Service Manual

Page: 18 / 59

1-9-1
BLOCK DIAGRAMS
System Control Block Diagram
IC101 (MAIN MICR
O CONTR
O
LLER)
IC101 (DTV SIGNAL PR
OCESS)
IC1501 (SUB MICR
O CONTR
OLLER)
KEY SWITCH
RESET
EV+3.3V
IC1502
A
V
CB
A
D
VD MAIN CB
A UNIT
DTV MODULE CB
A UNIT
3
52 53
38 40 39 33 34
22 19 18 20 29
38 155 154 153 204
V25 R25
W26
P22
B4
8 9
41 12
14 30
7
1
2
11
27MHz X'T
AL
X501
CLK 27 IN
SYS-RESET
SUB-RXD SUB-TXD
SUB-SCLK
RD
Y
CN701
SYS-RESET
LED1
SUB-RXD
SUB-TXD SUB-SCLK RD
Y
CN1101
PO
W
-SW
REG-CONT PWSW VIDEO-SW1
A
U
DIO-MUTE
A
U
DIO-SW1
A
U
DIO-SW2
SD
A
SCL
X OUT X IN XC OUT XC IN
RESET
P-DO
WN
VCC
PO
W
-SW
REG-CONT PWSW
VIDEO-SW1
SD
A
SCL
A
U
DIO-MUTE
A
U
DIO-SW1
A
U
DIO-SW2
SD
A
SCL
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
VIDEO
BLOCK DIA
GRAM
TO
A
U
D
IO
BLOCK DIA
GRAM
8MHz RESONA
T
OR
X1501
32.768KHz X'T
AL
X1502
Q1501
Q1502
C1501
(BA
C
KUP CAP
A
CIT
OR)
SW CB
A
1V2CONT
T
O
DTV MODULE
BLOCK DIA
GRAM
EV+5V
42
VIDEO-SW2
VIDEO-SW2
43
VIDEO-SW3
VIDEO-SW3
44
VIDEO-MUTE
VIDEO-MUTE
L1
27
27
SYS-RESET
30
30
SUB-RXD
28
28
SUB-TXD
26
26
SUB-SCLK
29
29
RD
Y
R23 U22
W25
R22
A4
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
DTV
-S-RESET
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
DTV
-S-RESET
CN501
CN1753
CN1061
CN1062
IC106
CN101
CN1051
26
1V2CONT
REMO
TE
EV+2.8V
P-ON+1.2V
11
1V2CONT
+1.2V REGULA
T
OR
R2
SYS-RESET
CN1751
CN101
12
12
10
10
9
9
8
8
7
7
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
DTV
-S-RESET
IC107
SD
A
IC1757
5
SCL
6
(MEMOR
Y)
RESET
IC501
2
1
4
2
KEY
-1
1
33
KEY
-1
KEY
-2
2
55
KEY
-2
KEY SWITCH
D2001
PO
WER
D2002
REC
D2003
TIMER
EV+3.3V
60 59 58
LED3 LED2
REMO
T
E
SENSOR
RE2001
29
P-ON+1.8V
66
DTV
-S-SREQ
55
DTV
-S-SCLK
44
DTV
-S-SIN
33
DTV
-S-SOUT
22
DTV
-S-RESET
E7H50BLS