Block Diagram - ViewSonic A90f+-1 VCDTS23307-2R Service Manual

M52743BSP
R,G,B Buffer x3
R
Video
GND
Pre-Amp
G
GND
I901
B
GND
H Sync.
V Buffer
GND
H V
UM68P62
SDA
SCL
UltraBrite
1
DOWN
UP
2
Autosizing
Green LED
LED
CKT.
Amber LED
Degauss
Control
ACV Input
EMI
Filter
100/240VAC
Protection
OVP
UVP
Frequency
reduction

11. Block Diagram

LM2435
Video
Output
I904
Stage
On Screen
DC
Display I903
Restorer x3
SDA1
SCL1
MCU IA01
CS
E 2 PROM
CONTROL
Heater
Control
High Voltage High Voltage
control Driver
X-ray
Protect
5V regulator
+5V
AC DC PFC
CKT
Rectifier
Switching
PWM
Transistor
Controller
Feedback
ON/OFF
Control
Control
ViewSonic Corporation
H.V
CDT
M46QCK761X123 (TCO MDT)
Rotation
Vertical
Amp.
Output Amp
TDA9116
Time-base
Horiz.
Controller
Driver
I301
B + Control
Driver
FBT
Dynamic
Focus CKT.
12V
Control
12V
Regulator
12V
Regulator
+193V
+82V
+15V To Time base & Video CKT
+9V
-15V
A90f+-1
53
Confidential – Do Not Copy
H. V=26.KV
Grid 2
Grid 1
TDA8172
I310
Blanking
&
Spot killer
Horiz.
Output
Stage
H.Deflection
+
B control
o/p stage
A90f+ (F19FSVZ)
BLOCK DIAGRAM