LC-28HM2E (serv.man3). Chassis layout, Description of majoy IC functions, Block diagram, Overall wiring diagram, Description of schematic diagram, Waveforms - page 49-63 - Sharp TV Service Manual (repair manual). Page 6

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54
LC-28HM2
AN-28SP2
6
5
4
3
2
1
A
B 
C
D
E
F
G
H
BLOCK DIAGRAM (DISPLAY)
3.3V
5V
-7.5V
-14V
30V
13V
9V
J4001
System 
connector
Video
Control
A
udio
 IC4001
Decoder
R.G.B
IC4302
LCD 
controller
IC2011
EEPR
OM
IC2005
Reset
IC2004
Microprocessor
IC1120
IC1121
D/A con
v
e
rter
IC2013
D/A con
v
e
rter
IC1304
Sound 
processor
100V
100V
100V
Main 
s
witch
A
C/DC 
in
v
e
rter
Bac
klight
Q2 
s
witch
13V
DC/DC
IN
OUT
LCD panel
BOSE 
speak
er 
with b
uilt-in 
AMP
Lch
BOSE 
speak
er
Rch
13V
P
o
w
er 
supply f
or 
speak
er 
AMP
5V 
(Main po
w
er supply 
for microprocessor)
Control
Control
Control
Gr
adation 
control 
po
w
er 
for LCD
IC1101-
IC1124

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