ViewSonic PJ452 Service Manual - Page 54
Block diagram
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UPC - 766907174311
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11. Block diagram ViewSonic Corporation RGB DDC Video S-Video A/D 1st_PLL Video dec. PW2200B CLAMP A/D 㪚㪫㪣 RS232C Speaker Audio IN Volume IC AMP 128K EEPROM 16M Flash ROM MAIN PWB 㪂 Image_PROCESSOR PW168A-10VL COLOR UNIFORMITY, TIMING GENERATOR, GAMMA CORRECTION L3E07070 S/H Level shift L3E06100 S/P DC X'tal (MCLK=132MHz) X'tal (DCLK=66.0MHz) Reg. CONTROL PANEL 0.6" LCD XGA AC INPUT IR RECEIVER REMC PWB TEMP SENSOR DC POWER SUPPLY PWB SWITCH SW PWB TEMP SENSOR AIR FLOW SENSOR TEMPSW FAN LAMP POWER SUPPLY PWB Lamp OPTICAL UNIT PROJECTION LENS 51 Confidential - Do Not Copy PJ452 Block diagram (C12XM)
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11. Block diagram
Block diagram (C12XM)
0.6"
LCD
XGA
DC POWER
SUPPLY PWB
LAMP POWER
SUPPLY PWB
Image_PROCESSOR
PW168A-10VL
1st_PLL
A/D
MAIN PWB
AC
INPUT
CLAMP
RGB
16M
Flash ROM
Video
OPTICAL
UNIT
PROJECTION
LENS
Lamp
128K
EEPROM
A/D,
,
Video dec.
PW2200B
DDC
S-Video
TEMP
SENSOR
CONTROL
PANEL
X'tal
(MCLK=132MHz)
X'tal
(DCLK=66.0MHz)
S/P
COLOR
UNIFORMITY,
TIMING
GENERATOR,
GAMMA
CORRECTION
L3E07070
REMC PWB
IR
RECEIVER
S/H
Level shift
L3E06100
FAN
Audio IN
Volume IC
AMP
Speaker
Reg.
TEMP
SENSOR
AIR FLOW SENSOR
RS-
232C
SWITCH
SW PWB
DC
TEMPSW
ViewSonic Corporation
Co
nfidential
- Do Not Copy
P
J452
51