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1-2
BLOCK DIAGRAM
Samsung Electronics
Repair Manual
MAIN
S
Option
Up to
68MB
DRAM
(4
(2MB)
MB)
LSU
Eng i ne
PANEL
B' D
FLASH
MEMORY
POWER
CORD
+24V
MOTOR
SOLENOID
FAN
EXIT
SE
N
SOR
HV PS
B' D
MHV
OPC G ND
SUPPLY
DEV
THV
MHVPWM
BI ASPW M
THVPWM
POWER
SWITCH
LED
4
3
KEY
IEEE 1284 CABLE
Oscillator
48 MHz
US B
PC
DEV_FUSE
+5V
IN-LET
SMPS
C P U
S3C46C0X01
74HCT273
74ACT273
Devided by
74HC406ON
Crystal
6.7149 MHz
USB Driver
USBN9602-28M
Power
On
Reset
Main
Clock
Video
Clock
VOLTAGE
DETECTOR
Oscillator
20 MHz
Oscillator
44 MHz
1.2 PCL Block Diagram(ML-1250)