Magnavox H2080MW8, Service Manual

Page: 22 / 67

1-10-1
BLOCK DIAGRAMS
System Control Block Diagram
IC1501 (SUB MICR
O CONTR
OLLER)
REMO
T
E
SENSOR
RS1610
1G 7G
~
23 17
~
a h
i
~
7
14
~
GRID
RESET
EV+3.3V
VFD
SEGMENT
FL1601
IC1602
IC1502
(VFD DRIVER)
KEY SWITCH
CN1061
CN1062
16
28
1 2
48 50 49 27
1 2
53 52 40 39 33 34
8 9
41 12 14 30
7
1
2
11
SYS+5V
PWR-SW
REG-CONT
VIDEO-SW1 A
U
DIO-SW1
A
U
DIO-SW2
SD
A
SCL
X OUT
X IN
XC OUT
XC IN
RESET
P-DO
W
N
BA
CK-UP+3.3V
FL-DIN
FL-CLK FL-STB
REMO
TE
KEY
-1
KEY
-2
PWR-SW
REG-CONT
LO
W
-PO
WER
VIDEO-SW1
SD
A
SCL SCL
SD
A
A
U
DIO-SW1
A
U
DIO-SW2
8MHz X'T
AL
X1501
32.768KHz X'T
AL
X1502
Q1501
Q1502
C1501
(BA
CKUP CAP
A
CIT
OR)
DIN CLK STB
F
AN-CONT1
15
F
A
N-CONT1
42
VIDEO-SW2
VIDEO-SW2
43
VIDEO-SW3
VIDEO-SW3
22
KEY
-1
17 16
LO
W
-PO
WER
F
AN-CONT2
1V2CONT
F
A
N-CONT2
26
1V2CONT
RESET
SW1501
PO
WER
CN1064
CN1063
SW3010
11
PO
WER-SW
A
V
CB
A
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
VIDEO
BLOCK DIA
GRAM
TO
A
U
D
IO
BLOCK DIA
GRAM
T
O
DTV MODULE
BLOCK DIA
GRAM
FR
ONT SW CB
A
PO
WER SW
CB
A
IC101 (MAIN MICR
O CONTR
OLLER)
IC101 (DTV SIGNAL PR
OCESS) D
VD/HDD MAIN CB
A UNIT
DTV MODULE CB
A UNIT
22 19 18 20 29
38 155 154 153 204
V25 R25
W26
P22
B4
27MHz X'T
AL
X501
CLK 27 IN
SYS-RESET
SUB-RXD SUB-TXD
SUB-SCLK
RD
Y
CN701
SYS-RESET SUB-RXD SUB-TXD SUB-SCLK
CN1101
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
66
DTV
-S-SREQ
55
DTV
-S-SCLK
44
DTV
-S-SIN
33
DTV
-S-SOUT
22
DTV
-S-RESET
P-ON+1.8V
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
RESET
IC501
2
1
4
2
RD
Y
OPEN/CLOSE
SW3011
44
VIDEO-MUTE
VIDEO-MUTE
E2H00BLS