Philips 202P4 - Block Diagram

Block Diagram
30
202P4 M25P
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Pre-Amp
TDA4887
Post-Amp
LM2402
OSD
WT6803
Sync Processor
TDA4856
Power Supply
&2
nd
Power
(+5V)
Degaussing
Rotation
EHT
X-RAY
Linearity
Control
DAF
Cs SW
Horizontal
Deflection
Vertical
STV9379
Muting & G1
Spot Killer
CRT
Sync
Switch
DDC
2B
BNC
D-SUB
’
H”
HV
H-UNLOCK
MUTE
B+
HDRV
G1
+230
+81
+15
-15
+6.3
SDA
SCL
Horizontal Frequency : 30~130kHz
Vertical Frequency : 50~160 Hz
CM25+ 202P4 21” MONITOR
SDA/SCL
(DDC)
.
.
.
H’
Auto
Calibrate
MCU
WT62P2
.
V
V
”
.
Signal
Selector
DC
Restore
(discrete)
R
G
B
.
Purity &
convergence
correction
MHR