Block Diagrams; Power(Smps) Block Diagram - Zenith XBV613 - DVD/VCR Combination Service Manual

BLOCK DIAGRAMS

1. POWER(SMPS) BLOCK DIAGRAM

BD101
NOISE FILTER
BLOCK
(C101,L102,
C102)
!
FUSE
RESISTOR
(FR101)
BR BL
(BK)(WH)
+
SNUBBER
C103
BLOCK
(D101,C105
C106,R104)
6 7 8
DRIVE & S/W BLOCK
(IC101, D102, R105,
C104, C108 , C109,
5
C107,ZD102)
1 3
!
Y-CAP
C110
!
Y-CAP
C111
T101
!
TRANS
RECTIFIER &
SMOOTING BLOCK
(D124,C124,C134,
R133,L124,C126)
2
RECTIFIER &
SMOOTING BLOCK
(D123,C127,C137,
L127)
RECTIFIER &
SMOOTING BLOCK
(D121,C126,R136)
RECTIFIER &
SMOOTING BLOCK
(D122,D125,C128,
L128,C138)
FEED-BACK
PHOTO COUPLER
BLOCK
(IC102)
(R141,R142,
C143,R143.
!
R144.R145
R146)
ERROR
AMP
(IC103)
3-19 3-20
MOTOR VCC
14VA
12V REG BLOCK
(Q166,ZD151,C160,
REG12V
R166,C159)
9V REG BLOCK
REG9V
(Q164,ZD152,C161,
R168,C166)
8V REG BLOCK
8V
(D126,IC141,R167,
C165)
3.8V REG BLOCK
3.8V
(IC131,C158,R165)
33V S/W BLOCK
33V
(Q161,R154,R155
Q173,R174,R177)
5.3VA
5V S/W BLOCK
5.0V
(Q165,C164,R172,
R174)
5VT S/W BLOCK
M5V/5VT
(Q163,C162,D127,
R156,R157)
PWR CTL BLOCK
(Q162,C161,R164,
PWR CTL'H'
R163)