Hitachi 61HDX98B Manual page 28

DP-85 DIGITAL CIRCUIT POWER SUPPLY DISTRIBUTION DIAGRAM
AC Plug
Live
AC Input
FUSE
F901
Switching
Noise Filter
Transformer
L901, 2, 3
T901
Rectifier
D901
Protector
E992: 7K
Feedback
Switching
I904
Control
I901
Protect
I905
D908:
Protect Red LED
AC Clock
I906
To
Deflection
RELAY
Power Supply
S901
Protection
Block
Cold
Protector
E994 : 7K
Protector
E995 : 7K
Relay
S902
Protector
Relay
E996 : 5K
S903
DP86
Only
Voltage
Control
24, 5V
Q915
TV Main ON/OFF
AC Clock
60Hz
D919 : F28
Rectifier
+28V : D911
D920 : C21
Rectifier
+21V : D912
Rectifier
+35V : D918
Rectifier
A12V
+24V, 5:D914
Regulator
+12 : I907
Regulator
TV9V : I908
Regulator
TV5V : I914
TV ON/OFF
Switch
Q914, Q918
Protector
SCR: Q913
ON = LO
= RED OR GREEN L.E.D.
OFF = Hi
REAR +28V
CENTER +21V
STAND BY +12V
D936 : >14.7V
D928 : +12V
ZD
D925:
D975 : >10.8V
D930 : TV9V
<4V
D ZD
D925:
D933 : >6.7V
D971 : TV5V
<4V
D ZD
"D" Over
Short Circuit Voltage
Detector Detector
Audio
+28V
Audio
+21V
33VS :
+33V
+12VS
+9V
+5V