Symphonic LCD-B20A6, Service Manual

Page: 19 / 56

7-1
System Control Block Diagram
L4630BLS
BLOCK DIAGRAMS
FUNCTION CB
A
KEY
-IN-1
22
CN31B
KEY
-IN-2
11
IR SENSOR CB
A
CLN53
RCV51
D51
RCV
-IN
33
REMO
TE
SENSOR
IC151 (MICR
O COMPUTER)
93 10 89 59 22
CN103B
CN103A
RCV
-IN
11
BA
CKLIGHT
-ADJ
22
P-ON-H
66 PR
O
TECT
-1
13
13
PR
O
TECT
-2
14
14
V
O
LUME
77
INPUT
-0
99
INPUT
-1
10
10
S-SW
15
15
SCL
18
18
SD
A
19
19
16
KEY
-IN-1
RCV
-IN
26
B
US-OPENV
RESET
P-ON-H
PR
O
TECT
-1
PR
O
TECT
-2
V
O
LUME
SD
A
SCL
INPUT
-0
INPUT
-1
S-SW
SCL
SD
A
88 24 46 27 78 45 28
13 11
X151 10MHz
XIN
XOUT
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
TO
A
U
D
IO
BLOCK DIA
GRAM
BA
CKLIGHT
-ADJ
P-ON-H
PR
O
TECT
-1
PR
O
TECT
-2
V
OLUME
INPUT
-0
INPUT
-1
S-SW
SCL
SD
A
MAIN CB
A
LCD MAIN CB
A UNIT
92
KEY
-IN-2
CN106
CN53
RESET
IC153
4
AL+5V
CN102B
CN102A
EEP-SD
A
2
EEP-SCL
1
B
US-OPEN
4 CN105
(NO CONNECTION)
IC152 (MEMOR
Y)
SCL
6
SD
A
5 7
WP
AL+5V
AL+5V
CN105 IS USED FOR ADJUSTMENT AT FACTORY
MPWEL
MPCE MPOE
MPSEL-0
MPWEH
RESET
QH
HDIN/FBIN
B
US-OPEN
2
D
V
P-RESET
-PC
8
D
V
P-CLK-PC
5 CN301
(NO CONNECTION)
D
V
P-SOUT
-PC
6
D
V
P-SIN-PC
7
D
V
P-CS-PC
4
MPSEL-0
3
Q156
3.3V<-->5V CONVER
TER
Q155
3.3V<-->5V CONVER
TER
Q152
3.3V<-->5V CONVER
TER
Q154
3.3V<-->5V CONVER
TER
Q153
3.3V<-->5V CONVER
TER
AL+3.3V
2 5
25
2D
VP-SOUT
2D
VP-CS
2D
VP-CLK
4
2D
VP-SIN
3
79
H-SYNC
2D
VP-RESET
91
AFT
-IN
11
11
AFT
-IN
23
SLO
W
-SW
17
17
SP-MUTE
18
18
FBIN
22
22
1
SLO
W
-SW
-IN
SP-MUTE
84
INSEL-MUTE
87
RAPID-SW
16
16
RAPID-SW
-IN
83 85 19
INSEL-MUTE
15
15
P-25V
-ON
21
21
NICAM-RESET
20
20
P-25V
-ON
SC-VIDEO-MUTE
NICAM-RESET
S/C-J
ACK-MUTE
14
14
33 34
EEP-SCL EEP-SD
A
S/C-J
A
CK-MUTE SP-MUTE
INSEL-MUTE
NICAM-RESET
FBIN
RAPID-SW
SLO
W
-SW
S/C-J
A
CK-MUTE
T
O
IF/VIDEO
BLOCK DIA
GRAM
AFT
-IN
IC301
58 50 60 57 59 83 89
7
P-25V
-ON
5
BA
CKLIGHT
-ADJ
PR
O
TECT
-1
T
O
LCD BA
CKLIGHT
BLOCK DIA
GRAM
KEY SWITCH KEY SWITCH
LCD DRIVE / LCD SIGNAL PR
OCESS
PO
WER
VCOM
VCOM
20
T
O
LCD
BLOCK DIA
GRAM