Emerson EWL20S5, Service Manual

Page: 19 / 54

7-1
BLOCK DIAGRAMS
System Control Block Diagram
L2601BLS
FUNCTION CB
A
KEY
-IN-1
22
CLN104
KEY SWITCH
KEY
-IN-2
11
BA
CKLIGHT
-ADJ
KEY SWITCH
IC1202
(TV MICR
O CONTR
O
LLER)
4
21
CN1201
34
KEY
-IN-1
REMO
TE
RESET
RESET
AL+3.3V(D)
37 38
X1201 27MHz
XIN
XOUT
MAIN CB
A
5
KEY
-IN-2
29 30
P-ON-H
V
OLUME
A
U
DIO-MUTE
SD
A
SCL
INPUT
-0
INPUT
-1
S-SW
SCL SD
A
32 11 13 35 12 14 36
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM
T
O
IF/VIDEO
BLOCK DIA
GRAM
T
O
A
UDIO
BLOCK DIA
GRAM
BA
CKLIGHT
-ADJ
P-ON-H
V
O
LUME
A
UDIO-MUTE
INPUT
-0
INPUT
-1
S-SW
SCL SD
A
SD
A
2
SCL
1
CN1209
(NO CONNECTION)
IC1205 (MEMOR
Y)
SCL
6
SD
A
5 7
WP
Q1204
3.3V<-->5V CONVER
TER
B
U
S-OPEN
4
NO PART MOUNTED FOR CN1209
33
B
US-OPEN
27
P-25V
-ON
IR SENSOR CB
A
CLN105
REMO
TE
SENSOR
RCV91
CN1202
REMO
T
E
33
6
AFT
-IN
44
TUNERCLK
AFT
-IN
FSC
P-25V
-ON
28
VCOM
V
-COM
TO LCD BLOCK DIA
GRAM
IC1201,IC1211
AL +5V
D91 PO
WER
Q91
P-ON-H
44