Philips 273E3LSW/93, Руководство по обслуживанию

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17
Meridian 3
5.2 Pow
e
r Board
M
IT
SUBI
SH
I 2
7W
PO
WE
R BO
ARD BL
O
CK DI
AG
RAM
EM
I F
ilt
er
Ci
rc
ui
t
Inpu
t A
C
S
our
ce
85
v / 60
H
z
~
26
4v
/ 5
0 H
z
In
ru
sh
Pr
ev
en
tio
n
R
ect
ifica
tio
n
Ma
in
Tr
an
sf
or
m
er
Sw
itc
hing C
ir
cui
t
( P
W
M
C
on
tr
ol IC
&
M
O
SF
ET
)
R
ect
ific
at
io
n
Fe
edba
ck
C
ont
ro
l
Ci
rc
ui
t
B+
Di
od
e Re
ct
ifi
er
and
Fi
lte
r C
ir
cui
t
O
ut
put
(
+5
V)
To M
ai
n bo
ar
d
/A
ud
io
*2
W
Fus
e For
O
LP
Di
od
e Re
ct
ifi
er
and
Fi
lte
r C
ir
cui
t
O
ut
put
(
+1
6V
) To
U
SB
(O
ption)
C
irc
uit
Di
od
e Re
ct
ifi
er
and
Fi
lte
r C
ir
cui
t
PW
M
C
ont
ro
l C
ir
cui
t
( P
W
M
C
on
tr
ol IC
_O
2_
TA
9687
)
DC
T
o
AC
Tr
an
sf
or
m
er
( E
EL
-1
9
* 1
pc
s )
Dr
iv
er
Ci
rc
ui
t
( Ful
l B
ri
dg
e )
C
C
FL La
m
p *
4
pc
s
A
bnor
m
al P
ro
te
ct
C
ontr
ol
C
ir
cuit
Fe
ed
ba
ck
C
ont
ro
l
Ci
rc
ui
t
D
immi
ng
C
ont
ro
l
Ci
rc
ui
t
O
N
/ O
FF C
ont
ro
l S
igna
l
( 5
v: on
/ 0
v:
of
f )
D
im
m
ing C
ont
ro
l S
igna
l
(B
ur
st
m
od
el
S
igna
l )
A
dap
te
r B
lo
ck C
irc
ui
t
In
ver
te
r B
lo
ck C
irc
ui
t