Text preview for : block diagrams.pdf part of LG block diagrams LG VCR bn200y block diagrams.pdf



Back to : block diagrams.pdf | Home

BLOCK DIAGRAMS
1. Power Block Diagram




T101 !
BD101 ! R101 TRANSFORMER
TO SYS
4 4 RECTIFIER
SNUBBER 7 24/15/12V
2 1 & SMOOTHING D151 D152 D153 D154 D155
BLOCK
3 + (D109, C120,
C103 8
L104,C121)
(D102,R104,
C105,C106)
3
9



6

DRIVE & S/W BLOCK 12VA REG.
R102
5 BLOCK TO SCART
OVER CURRENT LIMIT (Q155,R105, R159, 12VA
BLOCK C153,ZD151,C151)
TO TU/IF
LINE FILTER RECTIFIER
10 33V
BLOCK (IC101,C128,R109,C111, & SMOOTHING
(C101,L102, D157
D103,R103,C109) (D106, C116,
C102)
L103,C117) TO SYS, DRUM
2 11 12V(DRUM)

12
! TO SYS
RECTIFIER 5.4VA
1 36V S/W
F101 13 & SMOOTHING TO AV, TU/IF,
BLOCK 5VT SW SECAM
(D105, C115)
! (Q154, R157, BLOCK 5VT
HOT GND 1
4 FEED-BACK R158,R155) (Q152, R153, 5V S/W
BLOCK R154, D156) BLOCK
! ! TO Sensor
C113 C112 (R116,R117,R118 (Q151, R151,
3 5V
R119,R120,R121 R152)
IC102 2
! C114)
PWR CTL
BK
(BR)
WH
(BL) !
HOT CIRCUIT IC103
BLOCK FROM