Emerson EWR20V4, Service Manual

Page: 26 / 91

1-10-2
Sub System Control Block Diagram
E9400BLSUB
IC3 (MAIN MICR
O CONTR
OLLER)
IC200 (SUB MICR
O CONTR
OLLER)
RESET
EV+5V
IC201
MAIN CB
A
D
VD BE MAIN CB
A UNIT
KEY SWITCH KEY SWITCH
KEY SWITCH
CN1615
CN1616
D
VD-KEY
-2
1
1
D
VD-KEY
-2
2
2
FUNCTIN CB
A
10
9 8 4 1 2
64 61 25 47
11 12
45 46 54 53
40 52 51 50 41
F24 D22
G22
H22 F25
23 22
42
21 19 16 57
4
5
20
1
6 3
4
IC7 (INVER
TER)
27MHz X'T
AL
X3
N23 R23
27MHz CLK 27MHz CLK
SYS-RESET
SUB-RXD
SUB-TXD
SUB-SCLK
RD
Y
CN7
SYS-RESET
SUB-RXD
SUB-TXD SUB-SCLK RD
Y
CN201
PO
W
-SW
REG-COUT
PWSW
FID
A-MUTE
INSEL-0 INSEL-1
SUB-SD
A
SUB-SCL
X OUT X IN XC OUT XC IN RESET P-DO
WN
VCC
FL-SD
A
FL-CLK FL-STB
REMO
TE
D
VD-KEY
-1
D
VD-KEY
-2
PO
W
-SW
REG-CONT
PWSW
FID
SUB-SD
A
SUB-SCL
A-MUTE
INSEL-0 INSEL-1
39
V
-MUTE
V
-MUTE
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
VIDEO INPUT SELECT
BLOCK DIA
GRAM
T
O
A
UDIO INPUT/OUTPUT
SELECT BLOCK DIA
GRAM
T
O
VIDEO OUTPUT SELECT
BLOCK DIA
GRAM
29 30 31
S-CS
S-D
A
T
A-OUT
S-D
A
T
A-IN
S-CS
S-D
A
T
A-OUT
S-D
A
T
A-IN
32
S-CLK
S-CLK
T
O
SER
V
O/SYSTEM
CONTR
OL
BLOCK DIA
GRAM
8MHz RESONA
T
O
R
X200
32.768KHz X'T
AL
X201
Q202
Q203
C205 (BA
CKUP CAP
A
CIT
OR)
SUB-SD
A
SUB-SCL
INSEL-0 INSEL-1
Q16 Q17
2
28
1
12
7 8 9
10 11
REMO
TE
SENSOR
RM2001
1G 7G
~
23 17
~
a b c d
e
STB
REMO
TE-VIDEO
DISPLA
Y
-CLK
DISPLA
Y
-D
A
T
A
DISPLA
Y
-ENA
DIN CLK
GRID
FIP
SEGMENT
FIP502
IC571 (FIP DRIVER)
13 14 16
f
g h
i
T
O
SER
V
O/SYSTEM
CONTR
OL BLOCK
DIA
GRAM
SCL SD
A
TU900 (TUNER UNIT)
RD
Y
6
6
SUB-SCLK
3
3
SUB-TXD
5
5
SUB-RXD
7
7
SYS-RESET
8
8
Q800
Q801
WF13 WF14