Circuit Description; Power Supply Circuit - NEC MultiSync 3D JC-1404HME Service Manual

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2. CIRCUIT DESCRIPTION
(2-1) Power Supply Circuit
(Fig. 2-1) Block Diagram of the D.C. Power Supply of the MS-30.
+Bline
F.B.T
SW.REG
a) 170V
MAIN DC/DC
d)
CONVERTOR
b)85V
c)
24V
1
+18VSERIES
REGULATOR
OVER
VOLTAGE
PROTECTOR
+12V CHOPPER
f)
+12V
REGULATOR
h)+5V
i)
-12V
+5V SERIES
,_9...,.)
,_+6_V __ (HEATER)
REGULATOR
H.OSC
SAWTOOTH
GENERATOR
~ - -....... - - - - . . H . DRIVE
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