Nokia 447PRO - Page 37

5

Main board
Video board
Power Supply
UC3842
AC in 90 to
264 VAC
180 V
80 V
+/- 15 V
+13 V/-15V Audio
12V
UVLO
5V
Heater
GB04K
Microcontroller
ST7275J4
DIP42 Shrink
H-FLY
Horizontal
Step Down
Converter
Output
BUH1015
Vertical
Output
TDA9309
Deflection
Prosessor
TDA9109S/N
shrink 32
HV-
generator
UC3843
Heater
RR out
GG out
BB out
G1, G2,
Dyn foc,
Stat foc
27 kV
G2, Dyn foc,
Stat foc
BCL
TDA4886
Rin
Gin
Bin
V blank
input clamp
H blank
output clamp
STV9427
H sync V sync H blank/clamp V blank/clamp
G2
#2 Lin
#6 S-cap
Vert
yoke
Hor
yoke
V&H sync
K
e
y
b
o
a
r
d
SDA
ON/OFF "soft"
IC
2
IC
2
IC
2
R
G
B
FBLK
H&V sync
V-fly
Vertical
adjust
and
control
RESET
SUSPEND
POWER ON
LM2403
NATIONAL
PHILIPS
CONTRAST
BRIGHTNESS
XRAY
SCL
INT
USB_ON
KEY_PAD
+15V
T
o
U
S
B
H-drive
AUDIO + P.A.
LM4832 (National)
TDA7499 (SGS)
- Volume&Tone control
- 3D Sound
-2x3Waudio output
POW_LED
+5V
SDA
SCL
PRE_HEAT
PWR_UP
BLOCK DIAGRAM