Emerson LC320EM8, Service Manual

Page: 23 / 69

7-1
BLOCK DIAGRAMS
System Control Block Diagram
A71F3BLS
CN102
KEY
-IN1
KEY
-IN1
3
4
KEY SWITCH
IC3006 (SUB MICR
O CONTR
OLLER)
IC3015 (MAIN MICR
O CONTR
O
LLER)
TU3001
(TUNER UNIT)
TXD1 RXD1
TXD
RXD
CN3002
19
RESET
XOUT
XIN
RESET
IC3001
+3.3V
X3002
4MHz OSC
RESET
IC3009
+3.3V
DIGIT
AL MAIN CB
A UNIT
PO
WER SUPPL
Y CB
A
J
A
CK CB
A
IR SENSOR CB
A
FUNCTION CB
A
PO
WER SUPPL
Y CB
A
CN001
REMO
T
E
SENSOR
RCV891
AL+3.3V
D102
PO
WER
ST
ANDBY
D101
LED2
66
CN101B
REMO
T
E
22
LED1
77
CN302
LED2
19
19
CN3014
REMO
TE
88
CN3014
SD
A
66
CN302
SCL
44
CN3018
Q3025 Q3026
SD
A1
12
13
CN7501
SCL1
11
14
LED1
LED2
REMO
TE
LED1
18
18
4
4
CN552
CL552B
5
5
7
7
6
6
PR
O
TECT1
4
P-ON-H
5
BA
CKLIGHT
-PWM
7
BA
CKLIGHT
-ON
PR
O
TECT1
P-ON-H BA
CKLIGHT
-PWM
BA
CKLIGHT
-ON
6
CN3001
JUNCTION CB
A
17 31
14 15
32
3
23 22
A5 C6
AF17
PO
WER-KEY
PO
WER-KEY
28
E25
AD16
A
UDIO-SEL2
A
UDIO-SEL1
A
UDIO-SEL2
A
UDIO-SEL1
T
O
A
UDIO-1
BLOCK DIA
GRAM
B7 C7
14 15
I2C-CLK-TUNER I2C-D
A
T
A-TUNER
AE16
AF16
SCL SD
A
SCL SD
A
F26 F24
SCL2 SD
A2
AD21
EEPR
OM-WP
XOUT XIN
X3005
B18 A18
25.14MHz OSC
RESET
AD5
IC802 (T
ONE CONTR
OL)
SCL SD
A
14 13
IC7001 (VIDEO/A
UDIO SELECT
OR)
SCL SD
A
25 27
IC3026 (MTS/SAP A
UDIO SIGNAL PR
OCESS)
SCL SD
A
27 24
IC3017
(MEMOR
Y)
SCL2 SD
A2
6 5
WP
7
IC3014
(DIGIT
AL SIGNAL PR
OCESS)
SCL2 SD
A2
37 38
IC3023
(HDMI INTERF
A
CE)
SCL2 SD
A2
28 27
IC3004
(GAMMA CORRECTION)
SCL2 SD
A2
44 43
B
UFFER
B
UFFER
A
UDIO -MUTE
A
UDIO-MUTE
AMP-MUTE AMP-STBY
V
-COM
T
O
A
UDIO-2
BLOCK DIA
GRAM
TO INVER
TER
BLOCK DIA
GRAM
(CL552A)
C24
AMP-MUTE
B24
BA
CKLIGHT
-PWM
AMP-STBY
AE21
BA
CKLIGHT
-ON
B26
T
O
DIGIT
A
L
SIGNAL PR
OCESS
BLOCK DIA
GRAM
27
BA
CKLIGHT
-ON
12
PR
O
T
ECT1
1
P-ON-H
26
V
-COM
5
P-ON-H
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
P-ON-H
22