Hitachi 50SBX78B Projection Television User Manual


 
1
AC Input
v
Fuse
F901
Switching
Transformer
T901
E997
Rectifier
+26 : 0913
+32V
I
E998
7000
I
Audio
E993
D977
) +22v
Rectifier
4000
+22v
-
+22 : D972
, ~ ä
j-I . Co;;v.rt.
Rectifier
(M
+27 : D914
I--
D967
Rectifier
-23V
Regulator
-23 : D915
b
F
E996
-12 : 1909
7000
Conv.
-12v
E999
7000
tw
Rectifier
+31 : D916
Regulator
,“yz$ Stand By
A +12V
T
. A+12 : 1910
n--L!,?!-..
t-tewller
I
+120 : D929
h
I
0
I
8”“”
I
I
._ .-_
I
I I
Volt. Control
Regulator
&
I
I
+B : 1905
TV+5 : 1913
) TV Signal
Standby : Q907
Circuit
TV +5V
AC Clock
l
Da9
1904 +5 v
I
TV ON/OFF
+B
LIVE l COLD
Mode Switch
+ 120v
! AC clock
Q905, 6, Q908
E994
D940
2000
+12ov
60 Hz
-
TV Main ON/OFF
I
I
1 Regulator 1
“+“s”v” YD965
-
G-&V
+
I
TV+9 : 1912
c
TV Signal
Circuit
TV 4V
PROTECTION CIRCUIT BLOCK DIAGRAM