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17” CDT Color Monitor 107B7
48
11. Block diagram
LM2476 O/P
FUNCTION
IC802
Q
406
Q909,Q910
Q907,Q908
IC801
NT6812
PRE AMP
Q403,T402(FBT)
Q402,T401
IC601
TDA4863A
VERT.O/P
EHT
HOR.O/P
G
1
G2
FOCUS
HOR. DRIVER
X-RAY PROTECTION
PINCUSHION
&
CONTROL
24.5KV
H
V
BLANKING CIRCUIT
H-SIZE CONTROL
POWER SAVING
HV
IC101
SAA4849
CRT
B
G
R
R
G
B
CABLE
SIGNAL
12.5V
R162
R155
(50V-165V
VARIABLE
B+
48V
B+ PWM
IC101
6.3V
T901
13
IC101
LED
6.3V
Q909
Q910
L906
R929
RY901
FROM
IC101
Q913
Q911
POWER
MOSFET
OUTPUT
RECTIFIE
&SMOOTHED
OUTPUTS
RECTIFIE
&
SMOOTH
F.B
FROM
H.O.T
H-SYNC
C.K.T
H-SYNC
CONTROL
S
D
VCC
IC901
CONTROL
PWM O/P
R930
START C.K.T
R939,R940
D912
AC INPUT
90V-264V
LINE
FILTER
POWER
SWITCH
DEGAUSSING
C.K.T
VIN
RECTIFIED
& MOOTHED
RECTIFIED
&SMOOTH
TRANSFORME
POWER
Q907
Q908
31
29
12V