PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-video service
technicians.
When servicing this product, under no circumstances should the original
design be modified or altered without permission from Zenith Electronics
Corporation. All components should be replaced only with types identical to
those in the original circuit and their physical location, wiring and lead dress
must conform to original layout upon completion of repairs.
Special components are also used to prevent shock and fire hazard. These
components are indicated by the letter “x” included in their component
designators and are required to maintain safe performance. No deviations are
allowed without prior approval by Zenith Electronics Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes into
the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way. Never perform
customized installations without manufacturer’s approval. Unauthorized
modifications will not only void the warranty, but may lead to property damage
or user injury.
Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended
to alert the service personnel to important safety information in
the service literature.
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the service personnel to the presence
of noninsulated “dangerous voltage” that may be of sufficient
magnitude to constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an
equilateral triangle is intended to convey to the service personnel
the following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED
NEAR EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock.
After the original service problem has been corrected, make a check of the
following:
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of
adjacent component shorts. This is especially important on items transported to and from the repair shop.
2. Verify that all protective devices such as insulators, barriers, covers,
shields, strain reliefs, power supply cords, and other hardware have been
reinstalled per the original design. Be sure that the safety purpose of the
polarized line plug has not been defeated.
3. Soldering must be inspected to discover possible cold solder joints, solder
splashes, or sharp solder points. Be certain to remove all loose foreign
particles.
4. Check for physical evidence of damage or deterioration to parts and components, for frayed leads or damaged insulation (including the AC cord), and
replace if necessary.
5. No lead or component should touch a high current device or a resistor
rated at 1 watt or more. Lead tension around protruding metal surfaces
must be avoided.
6. After reassembly of the set, always perform an AC leakage test on all exposed
metallic parts of the cabinet (the channel selector knobs, antenna terminals,
handle and screws) to be sure that set is safe to operate without danger of
electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS
TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in
the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by
a .15 mfd 150V AC type capacitor between a known good earth ground
water pipe, conduit, etc.) and the exposed metallic parts, one at a time.
Measure the AC voltage across the combination of 1500 ohm resistor and
.15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor
and repeat AC voltage measurements for each exposed metallic part. Voltage
measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp
AC. Any value exceeding this limit constitutes a potential shock hazard and
must be corrected immediately.
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely
fitting shelf space over, or close to, a heat duct, or in the path of heated
air flow.
2. Avoid conditions of high humidity such as: outdoor patio installations
where dew is a factor, near steam radiators where steam leakage is a factor,
etc.
3. Avoid placement where draperies may obstruct venting. The customer
should also avoid the use of decorative scarves or other coverings that
might obstruct ventilation.
4. Wall- and shelf-mounted installations using a commercial mounting kit
must follow the factory-approved mounting instructions. A product mounted
to a shelf or platform must retain its original feet (or the equivalent
thickness in spacers) to provide adequate air flow across the bottom. Bolts
or screws used for fasteners must not touch any parts or wiring. Perform
leakage tests on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a
tilted position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small
casters across thresholds or deep pile carpets.
7. Caution customers against using a cart or stand that has not been listed
by Underwriters Laboratories, Inc. for use with its specific model of
television receiver or generically approved for use with TVs of the same or
larger screen size.
8. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous
consequences to home and family.
REGULATORY INFORMATION
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the equipment is operated in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one
or more of the following measures: Reorient or relocate the receiving antenna;
Increase the separation between the equipment and receiver; Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected; Consult the dealer or an experienced radio/TV technician for help.
The responsible party for this device’s compliance is:
Zenith Electronics Corporation
201 James Record Road
Huntsville, AL 35824, USA
Digital TV Hotline: 1-800-243-0000
Television systemAmerican TV Standard, NTSC, ATSC with STB
Channel coverageVHF: 2 - 13
UHF: 14 - 69
CATV: 1 - 125
Antenna75 ohm external terminal for VHF/UHF
Screen Size52” Width
More than 408 mVrms at the maximum volume setting (variable)
Impedance (output): 2 kohms
Supplied accessoriesRemote control, batteries 2 size AA (Alkaline battery)
Screen Aspect Ratio16 x 9
LCD Panel Size0.87 inch
D52WLCD5OVERVIEW
Page 6
OVERVIEW
FUNCTION OVERVIEW
Function Status Indicators
Lamp indicator, operation indicator, and temperature indicator located below the front panel
controls, reveal the operating status of the LCD projection TV.
Operation Indicator
Lamp Indicator
Temperature Indicator
Operation Indicator
Lamp Indicator
Off Power cord is not connected.
Red Power Cord is connected, TV is in standby mode.
Green On
Orange (flashing)Preparing operation in standby mode.
Orange
Red (flashing)There is a problem with the lamp or around it. Contact
an authorized service center.
Green (flashing)The lamp cover is not closed.
OrangeThe projection TV is overheating.
RedThe projection TV shut down due to overheating.
Red (flashing)The projection TV shut down, check the cooling fan.
Temperature Indicator
Projection lamp is reaching the end of its life and needs to
be replaced with a new lamp.
D52WLCD6OVERVIEW
Page 7
OVERVIEW
10
AM 03:00
Ch. 13
MONO
Ch.6
On-Screen Displays
This page describes your on-screen display and information banner options.
Main Channel Display
Displays current channel number.
Channel Label
If a channel label has been
set, then it will appear here.
Mute
Appears
when sound
is muted.
Volume
Volume level is displayed while
adjusting the sound.
ABC
PIP Display
This display
appears when
PIP is active.
Time
Appears when
pressing the
enter button on
remote control.
D52WLCD7OVERVIEW
Page 8
Front Panel Controls
power menuentervolch
OVERVIEW
1
2
3
4
5
6
7
8
Power On / Off
Menu
Enter (Same as ENTER button
on your remote control)
VOLUME UP / DOWN
CHANNEL UP / DOWN
Operation indicator.
Lamp indicator.
Temperature indicator.
D52WLCD8OVERVIEW
1
3
4
5
2
6
8
7
Page 9
123
456
789
0
tv
mode
light
power
antenna
video
front
comp1rgb
vcr
cable
dvd
sat
mute
swap pipch- pipch+
pip
menu
record stop
pause
rew
playf f
exit
flashbk surf
freeze
vol
ch
ratio
comp2
skip
source
enter
REMOTE CONTROL DESCRIPTIONS
Remote Control Functions in TV Mode
REMOTE CONTROL
Selects the remote operating
mode: TV, VCR, Cable, DVD
and Satellite. Select other oper-
ating modes, for the remote to
Selects the analog TV signal.
Toggles between Video 1 and
Allows you to navigate the on-
screen menus and to adjust the
system settings and preferences,
by moving to an option with
and selecting the highlighted
option with . If is pressed while
you are in normal viewing, the
information banner is displayed.
MODE
control external devices.
ANTENNA
Video 2 input sources.
VIDEO
MUTE
Switch the sound on or off
PIPCH-
Changes to next lower PIP
channel
SWAP
Swap the signal from
your PIP window to
the main screen.
THUMBSTICK
Not functional
D
F G
E
INDICATOR LIGHTS
Show active remote mode
every time any button is
pressed.
LIGHT
Illuminates the remote control keys.
FRONT
Selects the front video signal if a device, such as a
camcorder or game player,
is connected to the front
video input jack.
RATIO
Changes the screen format
or aspect ratio.
PIPCH+
Changes to next higher PIP
channel.
PIP
Toggles between PIP, POP
(Picture-out-of-Picture) and
Split screen.
SURF
Scrolls the Surf channel
list.
EXIT
Clears all on-screen displays and returns to TV
viewing from any menu.
D52WLCD9OVERVIEW
Page 10
REMOTE CONTROL
123
456
789
0
tv
mode
light
power
antenna
video
front
comp1rgb
vcr
cable
dvd
sat
mute
swap pipch- pipch+
pip
menu
record stop
pause
rew
playf f
exit
flashbk surf
freeze
vol
ch
ratio
comp2
skip
source
enter
Remote Control Functions in TV Mode
Selects component signal sources,
Use to enter a program number for
COMPONENT 1, 2
such as DVD or HD receiver.
NUMBER KEYPAD
For direct channel selection and
programming functions.
“DASH” BUTTON
multiple program channels.
VOLUME UP/DOWN
Increases/decreases the sound
level.
MENU
Brings up the main menu
to the screen.
POWER
Turns your TV or any other
programmed equipment on
or off, depending on mode.
RGB
Selects PC or RGB input
sources.
ENTER
When in the menu system
and other on-screen displays,
selects highlighted options.
CHANNEL UP/DOWN
Scrolls through available
channels in EZ Scan memory.
FLASHBK
Tunes to the last channel
viewed.
FREEZE
Captures and freezes the
currently-viewed screen in
PIP.
RECORD, PAUSE, REW,
FFWD, PLAY, STOP
Control the functions on your VCR.
D52WLCD10OVERVIEW
ENTER
When in the menu system
and other on-screen displays, selects high lighted
options.
SKIP
Functions as a song selector in audio mode and a
movie chapter selector in
aux/DVD mode.
Page 11
REMOTE CODES
TVs
REMOTE CONTROL
BrandCodes
A MARK112 143
ADMIRAL072 081 161
AKAI006 146
AMPRO073 167
AMSTRAD052
ANAM043 054 056
080 104 108
112 115 118
121 131
AOC004 006 058
112
BLAUPUNKT088
CANDLE002 003 004
006
CAPEHART058
CETRONIC043
CITIZEN002 003 004
006 043 101
103 143
CLASSIC043
CONCERTO004
CONTEC039 043 050
051
CORONADO143
CRAIG043 054
CROWN043 143
CURTIS MATHES004 006 101
116 143
CXC043
DAEWOO004 016 017
043 044 055
071 076 103
107 111 114
117 120 123
125 127 128
136 143
DAYTRON004 116 143
DYNASTY043
DYNATECH062
ELECTROHOME024 077 143
EMERSON004 005 006
028 043 047
048 050 051
096 116 143
151 153 154
155
FISHER007 057
FUNAI028 043
FUTURETECH043
GE004 006 008
009 034 056
073 074 091
116 130 144
155 160 161
165
BrandCodes
GOLDSTAR004 102 106
110 112 113
116 119 122
127 137 143
HALL MARK004 116
HITACHI004 006 009
010 011 012
023 041 075
143 158 163
166
INFINITY164
INKEL129
JBL164
JCPENNY004 006 008
009 024 030
065 101 143
156 160
JENSEN013
JVC034 038 070
083 145
KEC043
KENWOOD006 070
KLOSS002 059
KMC143
KTV006 043 143
154
LG255
LODGENET072
LOGIK072
LUXMAN004
LXI007 015 052
081 160 164
166
MAGNAVOX003 004 006
022 059 060
061 063 064
127 143 160
164
MARANTZ006 077 164
MATSUI164
MEMOREX004 007 072
116
METZ088
MGA004 006 024
028 042 049
077 116
MINERVA088
MITSUBISHI004 006 024
028 040 042
109 116 124
146
MTC004 006 062
101
NAD015 025
NEC006 007 016
Brand Codes
019 024 040
056 130 132
134
NIKEI043
ONKING043
ONWA043
OPTONICA019 081
PANASONIC034 056 080
092 164
PHILCO003 004 006
024 043 056
059 060 063
064 127 143
164
PHILIPS003 004 005
006 038 059
070 093 143
160 164
PIONEER006 018 023
025 027 116
135 176
PORTLAND004 143
PROSCAN144 160 161
165 167
PROTON004 058 116
131 143 171
173
QUASAR034 056 092
RADIO SHACK019 043 047
116 127 143
RCA004 006 023
024 056 065
074 144 152
156 160 161
165
REALISTIC007 019 043
047
ROCTEC186
RUNCO168 169
SAMPO004 006 058
116
SAMSUNG004 050 089
101 105 113
116 127 133
137 143 160
SANYO007 020 021
033 039 053
057 082 166
SCOTT004 028 043
048 116 143
SEARS004 007 015
028 030 057
082 094 101
116 143 160
BrandCodes
Sharp004 014 019
022 028 029
081 143 170
175
SIEMENS088
SIGNATURE072
SONY041 070 079
085 126 139
147 185
SOUNDESIGN003 004 028
043 116
SPECTRICON112
SSS004 043
SUPRE MACY002
SYLVANIA003 004 006
044 059 060
063 064 116
127 140 160
164
TANDY081
TATUNG056 062
TECHNICS034 080 084
TECHWOOD004
TEKNIKA002 003 004
006 024 028
031 043 072
077 101 103
143
TELEFUNKEN037 046 086
087
TELERENT072
TERA172
TMK004 116
TOSHIBA007 015 030
040 051 062
101 138
TOTEVISION143
UNIVERSAL008 009
VIDEO CONCEPTS146
VIDIKRON174
VIDTECH004 116
WARDS004 008 009
019 028 060
061 063 064
072 074 116
143 164
YAMAHA004 006
YORK004 116
YUPITERU043
ZENITH001 072 073
095 103 157
ZONDA112
D52WLCD11OVERVIEW
Page 12
VCRs
REMOTE CONTROL
BrandCodes
AIWA034
AKAI016 043 046
124 125 146
AMPRO072
ANAM031 033 103
AUDIO DYNAMICS012 023 039
043
BROKSONIC035 037 129
CANON028 031 033
CAPEHART108
CRAIG003 040 135
CURTIS MATHES031 033 041
DAEWOO005 007 010
064 065 108
110 111 112
116 117 119
DAYTRON108
DBX012 023 039
043
DYNATECH034 053
ELECTROHOME059
EMERSON006 017 025
027 029 031
034 035 036
037 046 101
129 131 138
153
FISHER003 008 009
010
FUNAI034
GE031 033 063
072 107 109
144 147
GO VIDEO132 136
GOLDSTAR012 013 020
101 106 114
123
HARMAN KARDON012 045
HITACHI004 018 026
034 043 063
137 150
INSTANTREPLAY031 033
JCL031 033
JCPENNY012 013 015
033 040 066
101
JENSEN043
JVC012 031 033
043 048 050
BrandCodes
055 060 130
150 152
KENWOOD014 034 039
043 047 048
LG255
LLOYD034
LXI003 009 013
014 017 034
101 106
MAGIN040
MAGNAVOX031 033 034
041 067 068
MARANTZ012 031 033
067 069
MARTA101
MATSUI027 030
MEI031 033
MEMOREX003 010 014
031 033 034
053 072 101
102 134 139
MGA045 046 059
MINOLTA013 020
MITSUBISHI013 020 045
046 049 051
059 061 151
MTC034 040
MULTITECH024 034
NEC012 023 039
043 048
NORDMENDE043
OPTONICA053 054
PANASONIC066 070 074
083 133 140
145
PENTAX013 020 031
033 063
PHILCO031 034 067
PHILIPS031 033 034
054 067 071
101
PILOT101
PIONEER013 021 048
PORTLAND108
PULSAR072
QUARTZ011 014
QUASAR033 066 075
145
RCA013 020 033
Brand Codes
034 040 041
062 063 107
109 140 144
145 147
REALISTIC003 008 010
014 031 033
034 040 053
054 101
RICO058
RUNCO148
SALORA014
SAMSUNG032 040 102
104 105 107
109 112 113
115 120 122
125
SANSUI022 043 048
135
SANYO003 007 010
014 102 134
SCOTT017 037 112
129 131
SEARS003 008 009
010 013 014
017 020 031
042 073 081
101
SHARP031 054 149
SHINTOM024
SONY003 009 031
052 056 057
058 076 077
078 149
SOUNDESIGN034
STS013
SYLVANIA031 033 034
059 067
SYMPHONIC034
TANDY010 034
TATUNG039 043
TEAC034 039 043
TECHNICS031 033 070
TEKNIKA019 031 033
034 101
THOMAS034
TMK006
TOSHIBA008 013 042
047 059 082
112 131
BrandsCodes
TOTEVISION040 101
UNITECH040
VECTOR RESEARCH 012
VICTOR048
VIDEO CONCEPTS012 034 046
VIDEOSONIC040
WARDS003 013 017
024 031 033
034 040 053
054 131
YAMAHA012 034 039
043
ZENITH001 034 048
056 058 072
080 101
D52WLCD12OVERVIEW
Page 13
SAT
REMOTE CONTROL
BrandCodes
ALPHASTAR DSR123
AMPLICA050
BIRDVIEW051 126 129
BSR053
CAPETRONICS053
CHANNEL MASTER 013 014 015
018 036 055
CHAPARRAL008 009 012
077
CITOH054
CURTIS MATHES050 145
DRAKE005 006 007
010 011 052
112 116 141
DX ANTENNA024 046 056
076
ECHOSTAR038 040 057
058 093 094
095 096 097
098 099 100
122
ELECTRO HOME089
EUROPLUS114
FUJITSU017 021 022
BrandCodes
GENERAL INSTRUMENT
HITACHI139 140
HOUSTON TRACKER 033 037 039
HUGHES068
HYTEK053
JANIEL060 147
JERROLD061
KATHREIN108
LEGEND057
LG255
LUTRON132
LUXOR062 144
MACOM010 059 063
MEMOREX057
NEXTWAVE028 124 125
NORSAT069 070
PACE SKY SATELLITE 143
PANASONIC060 142
PANSAT121
027 133 134
003 004 016
029 031 059
101
051 057 104
064 065
BrandCodes
PERSONAL CABLE117
PHILIPS071
PICO105
PRESIDENT019 102
PRIMESTAR030 110 111
PROSAT072
RCA066 106
REALISTIC043 074
SAMSUNG123
SATELLITE SERVICE
SCIENTIFIC ATLANTA 032 138
SONY103
STARCAST041
SUPER GUIDE020 124 125
TEECOM023 026 075
TOSHIBA002 127
UNIDEN016 025 042
CO028 035 047
057 085
087 088 090
107 130 137
043 044 045
048 049 078
079 080 086
101 135 136
BrandCodes
VIEWSTAR115
WINEGARD128 146
ZENITH001 081 082
083 084 091
120
DVD
BrandCodes
APEX DIGITAL022
DENON020 014
GE005 006
GOLDSTAR010 016 025
HARMAN KARDON027
JVC012
LG001 010 016
D52WLCD13OVERVIEW
BrandCodes
025
MAGNAVOX013
MARANTZ024
MITSUBISHI002
NAD023
ONKYO008 017
PANASONIC003 009
BrandCodes
PHILIPS013
PIONEER004 026
PROCEED021
PROSCAN005 006
RCA005 006
SAMSUNG011 015
SONY007
BrandCodes
THOMPSON005 006
TOSHIBA019 008
YAMAHA009 018
ZENITH010 016 025
Page 14
CATV
REMOTE CONTROL
BrandCodes
ABC003 004 039
042 046 052
053
ANTRONIK014
ARCHER005 007 014
024
CABLE STAR026
CENTURION092
CENTURY007
CITIZEN007
COLOUR VOICE065 090
COMBANO080 081
COMTRONICS019 030
DIAMOND023
EAGLE020 030 040
EASTERN057 062 066
ELECTRICORD032
GE072
GEMINI008 022 025
054
GI052 074
GOLDEN CHANNEL 030
HAMLIN049 050 055
HITACHI052 055
HOSPITALITY070 077
JERROLD002 003 004
BrandCodes
008 009 010
052 069 074
LG255
M-NET037
MACOM033
MAGNAVOX010 012 064
079
MEMOREX001
MOVIE TIME028 032
NSC015 028 038
071 073
OAK016 031 037
053
PANASONIC044 047
PARAGON001
PHILIPS006 012 013
020 065 085
090
PIONEER034 051 052
063 076
POST NEWS WEEK 016
PRUCER059
PTS011 048 071
072 073 074
PULSAR001
RCA047
BrandCodes
REGAL049 050
REGENCY057
REMBRANT025
RK091
SAMSUNG030 068
SCIENTIFIC ATLANTA 003 011 041
042 043 045
046
SHERITECH022
SIGNAL030
SIGNATURE052
SL MARX030
SPRUCER047 078
STARCOM002 004 008
009
STARGATE008 030
SYLVANIA067
TADIRAN030
TANDY017
TEXSCAN029 067
TOCOM039 040 056
TOSHIBA001
UNIKA007 014 024
UNITED CABLE004 053
UNIVERSAL005 007 014
024 026 027
BrandCodes
032 035
VIEWSTAR012 015 018
086 087 088
089
ZENITH001 060 093
D52WLCD14OVERVIEW
Page 15
THEORY
chroic
1
Proj
THEORY
Video is generated using an LCD Optical Engine. Light from a high intensity light is split into red, green, and blue
which passes through LCDs before being joined back together with a prism.
OPTICS ENGINE
2nd Fly-eye
Lens
1st Fly-eye
Lens
Lamp
1st Illumination
PBS Array
Lens
Dichroic Prism
LCD (Red)
Dichroic Red Lens
(DRL 60)
Mirror 2
Red Reflection
Mirror 1
Dichroic Red Reflection
LCD (Green)
Dichroic Green Lens
(DGL 60)
Blue Transmission
Di
ectionLens
LCD (Blue)
Blue Polarizer (BP 60)
Blue C-Lens 2
Mirror 5
Blue Reflection
Blue
C-Lens
Mirror 4
Blue Reflection
Mirror 3
D52WLCD15OVERVIEW
Page 16
THEORY
R
r
R
100%
Unpolarized
Light
100%
Unpolarized
Light
FEL: Fly-Eye Lens. Focuses the light and
improves its efficiency and uniformity.
Red
otato
50%
P
S
P
S
S-Polarizer
50%
S-Polarizer
50%
S-Polarizer
50%
S-Polarizer
S
S
Rotator (l/2 Plate): Changes P-wave to Swave.
P-Polarizer
PBS: Polarizing Beam Splitter.
Improves the light’s efficiency by
about 1.8 times. Transmits P-wave ,
Reflects S-wave.
otator
S-Polarizer
Green
White
Dichroic Red Reflection
Cyan
Cyan
Blue
Dichroic Blue Transmission
Dichroic mirrors are used to separate the light into red, green, and blue. A Dichroic mirror allows a certain wavelength
of light to pass through while refecting another.
Dichroic Red Reflection: Reflects red light and allows all other colors to pass through.
Dichroic Blue Transmission: Allows blue light to pass through and reflects others.
D52WLCD16OVERVIEW
Page 17
THEORY
G
C
l
s
The three light beams pass through Condensing Lenses (C-Lens) which focus the light to match the size of the LCD panel.
Then the three light beams are joined together to form white light, which is then projected to the viewing screen.
WITHOUT C-LENS
WITH C-LENS
LCD Pane
-Lens
Condensing Lens: (C-Lens) focuses the light to match the size of the LCD panel.
Dichroic Prism: The prism consists of two Dichroic Mirrors. One reflects red light forward and the other reflects blue light
forward. Both allow green light to pass through. Once the light is joined, it is projected onto the viewing screen.
BLUE
WHITE
Dichroic Prism
REEN
RED
Black Stripe
Diffusion Plate
Hard Coat
Anti-Static
L
ENTICULAR
S
CREEN
Lenticular Len
RESNEL
F
L
ENS
Fresnel Lens: Mylar screen that condenses/focuses
the light from projection lens.
Lenticular Lens: Focuses the light through the
openings in the Black Stripe layer.
Black Stripe: Improves contrast by blocking outside
light.
Diffusion Plate: Improves viewing angle by diffusing
the light.
Hard Coat: Protects the screen surface and helps
improve contrast.
D52WLCD17OVERVIEW
Page 18
THEORY
LIQUID CRYSTALS
Matter has three distinct states; solid, liquid, and gas
(and what some consider a fourth state beyond gas,
plasma). However, there are states of matter that may
fall between these states. Liquid crystals fall between a
liquid and a solid. Basically they are crystals that hold
their orientation (shape) but can flow similar to liquids.
Their molecules point in the same direction with respect
to each other like in a solid, but they are free to change
position like a liquid. Think of a handful of pencils. They
all point the same direction and hold their shape at
rest, but (collectively) change shape when you squeeze
or let go of them.
There are different phases and types of liquid crystals
that perform differently. Small amounts of pressure, heat,
and/or electricity can cause liquid crystals to change in
some way. Therefore liquid crystals are used in many
different ways, not just for displays. Other uses are
thermometers, window coatings, soap, etc. The types
of liquid crystals used in LCDs are called Twisted Nematics.
As the name implies, they are twisted. By applying an
electrical current to them they will untwist.
LIQUID CRYSTAL PANEL
Below is an exploded view of the Liquid Crystal Panel.
The key to an LCD's operation is the polarizers. The
polarizers only allow a certain wavelength of light to
pass through. The two polarizers are mounted at a 90
degree angle with respect to each other, which prevents
light from passing through. The liquid crystals are used
to twist the light beam 90 degrees and allow light to
pass through that pixel.
Each sub-pixel or cell (a red, green, and blue sub-pixel
equals one pixel) is controlled by a Thin Film Transistor
(TFT). This provides accurate control of each cell and
makes for an accurate picture. Some methods used in
the past that didn't involve a switch and current could
leak to surrounding cells resulting in a blurred image.
TFT Element
Polari zer
Color Filter
Transistor
Gate Line
Data Line
Pixel Electrode
Common Electrode
Liquid Crystal
Polari zer
LIQUID CRYSTAL PANEL CROSS-SECTION
D52WLCD18OVERVIEW
Pixel Electrode
(Transparent)
Source
Semi-conductor
Insulator
THIN FILM TRANSISITOR
Gate
Glass Panel
Drain
Page 19
THEORY
TERMINOLOGY
This section explains some of the terminology used with LCD RPTVs. Viewing angle, IPS (In-Plane Switching), Tuning
Standards, Peak Brightness, Contrast Ratio, Response Time, and DVI (Digital Video Interface).
VIEWING ANGLE
Viewing angle is the angle at which the display’s brightness begins to noticeably diminish. Viewing on the LCD RPTVs
is limited due to the Viewing Screen (see page 21).
IPS (IN-PLANE SWITCHING)
In-Plane Switching provides more control over
the Liquid Crystals in an LCD. It uses an electric
field to line up the Liquid Crystals in an arc
formation. This directs light out at angles which
improves the viewing angle.
Conventional TFT-LCDIPS Mode TFT-LCD
PEAK BRIGHTNESS
Peak brightness is the maximum amount of brightness that a display can produce. It is often measured in candella per
square meter (cd/m2). The D60WLCD is rated at 680 cd/m
2
Liquid Crystal
Electrode
CONTRAST RATIO
Contrast Ratio is the ratio of a display’s
brightest white to its darkest black. One of the
limitations of LCDs has been contrast ratio. The
D60WLCD features a 200:1 contrast ratio.
RESPONSE TIME
The speed at which the pixels can react or change. Slower response times can cause fast moving video to “ghost” or
distort because the scene changes faster than the LCD can display the video (especially with video games). The
response time of new LCDs isn't a factor for most uses, but older models can display noticeable ghosting due to slower
response times.
D52WLCD19OVERVIEW
Page 20
CIRCUIT DESCRIPTIONS
1. Main Part
CIRCUIT DESCRIPTIONS
1.1 CXA2069Q :
Audio/Video Switch
(1) Description
The CXA2069Q is a 7-input, 3-output audio/video switch featuring I 2 C bus compatibility for TVs. This IC has input pins
that are compatible with S2 protocol.
(2) Features
• 4 inputs that are compatible with S2 protocol
• Serial control with I 2 C bus
• 7 inputs, 3 outputs
• The desired inputs can be selected independently for each
of the 3 outputs
• Wide band video amplifier (20 MHz, –3 dB)
• Y/C MIX circuit
• Slave address can be changed (90H/92H)
• Audio muting from external pin
• High impedance maintained by I 2 C bus lines (SDA, SCL)
even when power is OFF
• Wide audio dynamic range (3 Vrms typ.)
(3) Description of Operation
The CXA2069Q is a TV I 2 C bus-compatible AV switch IC.
The video system and the stereo audio system
both have 7 inputs and 3 outputs each. 4 of the 7 video system inputs support S2 and S protocols.
The desired inputs can be independently assigned to each
output (in the audio system, the left and right
channels are processed as one unit) by I 2 C bus control.
However, the same input is assigned to both the
video and audio system output 3.
D52WLCD20CIRCUITS
Page 21
(4) Block Diagram
CIRCUIT DESCRIPTIONS
D52WLCD21CIRCUITS
Page 22
CIRCUIT DESCRIPTIONS
1.2 CXA2151Q :
Video/Sync Selector
(1) Description
The CXA2151Q is a bipolar IC developed for multi scan TVs,
and incorporates a four system video switch (including HV
sync signal processing) and a YCbCr output matrix circuit.
(2) Features
• Supports the I2C bus
• Supports multi scan
• Four system video switch (of which two systems support D3
pins)
• Matrix circuit
• Each YCbCr output can be switched between 0dB, 6dB
(gain adjustable) and mute.
• Sync signal automatic identification circuit (with fixed mode)
• Sync separation circuit (supports HD)
• HD Tri-level sync identification circuit
• Sync signal frequency counter (both H and V)
• Dummy sync output
(3) Description of Operation
1) Programmable Matrix Selector
The CXA2151Q has a built-in four system video switch,
which can be selected by INPUT_SEL (I
YCbCr, HD YPbPr, GBR and the respective HV sync signals can be input to each system.
Horizontal scanning line frequencies from 15 to 45kHz can
be input as the range which supports multi scan.
The selected signals are output from SEL_OUT (Pins 22,
23, 25, 26 and 27), respectively. The output amplitude at
this time can be selected by GAIN_SEL (I
when GAIN_SEL is set to 0, the gain can be adjusted by
YGAIN, CBGAIN and CRGAIN (I
HV sync signal input supports both positive and negative
polarity.
Select MAT_OUT (I
2
C bus) as follows according to the input.
• Select THROUGH mode during YCbCr input.
• When YPbPr or GBR are input, select the mode that converts these signals to YCbCr.
In addition, the IN1 and IN2 systems support D3 input pins.
This is selected by SELSTB_1 and SELSTB_2 (I
2
C bus).
The control line input voltage of each L1, L2, L3 and SW pin
is returned to the status register by a ternary or binary value.
Next, the HV sync signal processing block is described
below.
Existence distinction is first performed to determine whether
the selected sync signals are input from H and V, and these
results are sent as the existence status to the EV and EH
status registers. On the other hand, polarity-matched H and V
that passed through the polarity identification circuit are input
to the priority ranking circuit.
When inputting composite sync (CS), input to the H input pin
of each input system. After passing through the polarity identification circuit, V sync separation is performed and the signal is input to the priority ranking circuit.
When inputting Sync on Y or Sync on Green, input to the
number 3 pin of each input system.
After passing through HYSW, the signal is amplified by 6dB
and output to YG_OUT (Pin 15). This output is returned to
YG_IN (Pin 16) via a sync tip clamping capacitor, sync separation is performed, and the signal is input to the priority ranking circuit. This route can also be used during CS signal input
by setting HYSW (I
2
C bus) to 1.
In addition, sync identification is performed to determine
whether the input signal from YG_IN (Pin 16) is Tri-level
sync, and these results are returned to the 3STATE status
register.
In this manner, the respective signals are input to the priority
ranking circuit, and the output sync signal is determined by
the EV and EH status.
The priority ranking is as follows. The TV set should be
designed so that one of the following three points is met.
1. When both H and V exist at the H and V pins, these sig-
nals are selected with the highest priority.
$ EH = 1, EV = 1
2. When CS exists at the H pin and there is no input at the V
pin, CS is selected.
$ EH = 1, EV = 0
3. When Y or GREEN exists at the number 3 pin and there is
no input at the H and V pins, Y or GREEN is selected.
$ EH = 0, EV = 0
After the HV output is determined, the H sync signal pulse
width is adjusted by H_WIDTH (I
2
C bus), and then
the H sync signal is output together with the V sync signal to
SEL_OUT.
2) SYNC Counter
The H and V sync signals selected by the HV sync signal
processing block described previously are sent to the SYNC
counter block next.
The SYNC counter block counts the frequency of the input H
and V sync signals.
D52WLCD22CIRCUITS
Page 23
CIRCUIT DESCRIPTIONS
The SYNC counter block counts the H sync signal input during a certain period (.5ms) based on the clock obtained by
the internal VCO from the 4MHz crystal oscillator or ceramic
oscillator connected to EXTCLK/
XTAL (Pin 20), and returns these results to the H-NUMBERH/L status registers in 10 bits.
When the H sync signal is not input, H-NUMBER-H/L is 0 or 1.
For the V sync signal, the number of reference clock
(31.25kHz) pulses during 1 V cycle is counted, and these
results are returned to the V-NUMBER-H/L status registers in
10 bits.
When the V sync signal is not input, the count that matches
the frequency selected by VFREQ (I
2
C bus) is returned to V-
NUMBER-H/L.
The SYNC count values and conversion formulas for each H
and V sync signal are shown below.
H sync signal fH [kHz]
15.73
31.5
33.75
45
Count value [HEX]
4F
9D
A8
E1
Count value ([DEC] $ [HEX]) = fH # 5ms
Note that a 4MHz external clock can be input to
EXTCLK/XTAL (Pin 20) via a capacitor by setting CLK_SEL
2
(I
C bus).
A dummy sync can be output by setting SELDUM (I
2
C bus).
Select the dummy sync frequency with HFREQ and VFREQ(
2
I
C bus).
However, note that when the dummy sync is selected, the
SYNC counter does not operate even if H and V sync signals
are input.
3) Notes on Operation
• Processing for unused pins
OPEN : Pins 1 to 3, 7, 8, 33 to 35, 38, 39, 41 to 43, 46 and
47
Connected to GND via a capacitor and resistor: Pins 4, 5,
10, 11, 36, 37, 44 and 45 (See each H and V input and the
Application Circuit.)
This is to prevent SYNC counter misoperation.
• Input the H and V inputs at sufficiently low impedance.
• Internal clamp timing
The internally generated clamp pulse follows the timings T1
and T2 shown below. Input H_IN and Sync on Y/Sync on
Green so that the clamp pulse does not overlap the video
interval to prevent clamping error.
V sync signal fV [kHz]
Count value [HEX]
60
50
Count value ([DEC] $ [HEX]) = 1/(fV # 32ns)
208
271
D52WLCD23CIRCUITS
Page 24
(4) Block Diagram
CIRCUIT DESCRIPTIONS
D52WLCD24CIRCUITS
Page 25
CIRCUIT DESCRIPTIONS
1.3 MSP3440G :
Sound Processor
(1) Introduction
The MSP 3440G family of single-chip Multistandard Sound
Processors covers the sound processing of all analog TVStandards worldwide. The full TV sound processing, starting
with analog sound IF signal-in, down to pro-cessed analog
AF-out, is performed on a single chip.
Figure shows a simplified functional block diagram of the
MSP 3440G.
Surround sound can be reproduced to a certain extent with
two loudspeakers.
These TV sound processing ICs include versions for processing the multichannel television sound (MTS) signal conforming to the standard recommended by the Broadcast
Television Systems Committee (BTSC).
The DBX noise reduction, or alternatively, MICRONAS Noise
Reduction (MNR) is performed alignment free.
The MSP 3440G has built-in automatic functions: The IC is
able to detect the actual sound standard automat-ically
(Automatic Standard Detection). Furthermore, pilot levels and
identification signals can be evaluated internally with subsequent switching between mono/stereo/bilingual; no I
action is necessary (Auto-matic Sound Selection).
2
C inter-
Very high deviation FM-Mono: Detection and robust demodulation of one FM carrier with a maximum devi-ation of 540 kHz.
BTSC-Stereo: Detection and FM demodulation of the aural carrier resulting in the MTS/MPX signal. Detec-tion and evaluation
of the pilot carrier, AM demodula-tion of the (L-R)-carrier and
detection of the SAP sub-carrier.
Processing of DBX noise reduction or MICRONAS Noise
Reduction (MNR).
BTSC-Mono + SAP: Detection and FM demodulation of the
aural carrier resulting in the MTS/MPX signal.
Detection and evaluation of the pilot carrier, detection and FM
demodulation of the SAP subcarrier. Process-ing of DBX noise
reduction or MICRONAS Noise Reduction (MNR).
[
Application Note:
All ground pins should be connected to one low-resis-tive
ground plane. All supply pins should be connected separately
with short and low-resistive lines to the power supply.
Decoupling capacitors from DVSUP to DVSS, AVSUP to
AVSS, and AHVSUP to AHVSS are recommended as closely
as possible to these pins.
Decoupling of DVSUP and DVSS is most important.
We recommend using more than one capacitor. By choosing
different values, the frequency range of active decoupling can
be extended. In our application boards we use: 220 pF, 470
pF, 1.5 nF, and 10 mF. T he capacitor with the lowest value
should be placed near-est to the DVSUP and DVSS pins.
(Fig Simplified functional block diagram of the MSP 3440G)
(2) Sound IF Processing
1) Analog Sound IF Input
The input pins ANA_IN1+, ANA_IN2+, and ANA_IN-offer
the possibility to connect two different sound IF(SIF)
sources to the MSP 3440G. The analog-to-digital conversion of the preselected sound IF signal is done by an A/Dconverter. An analog automatic gain circuit(AGC) allows a
wide range of input levels. The high-pass filters formed by
the coupling capacitors at pins ANA_IN1+ and ANA_IN2+.
2) Demodulator: Standards and Features
The MSP 3440G is able to demodulate all TV-sound standards worldwide including the digital NICAM system.
D52WLCD25CIRCUITS
Page 26
(3) Block Diagram
CIRCUIT DESCRIPTIONS
Fig Signal flow block diagram of the MSP 3440G(input and output names correspond to pin names)
D52WLCD26CIRCUITS
Page 27
CIRCUIT DESCRIPTIONS
2. Digital Part
2.1 DTV Ready Video Chip
(1) Features
• Integrate format converter and display controller into a single chip
• Input video (2 channels)
- NTSC/PAL
- PC output : VGA/SVGA/XGA
- STB output : 1080I, 720P, 480P, 480I
- Display : any combination of NTSC/PC/STB including 2xNTSC, 2xSTB
• High quality NTSC up-conversion
- Noise reduction : adaptive mean filtering
- Time base correction with frames for non-standard signal (ex: VCR)
- Motion-adaptive 3-D de-interlacing with directional interpolation
• Display format : 1080I/768(720)P/480P/480I both 4:3 and 16:9
Europe 576I 100Hz 4:3 and 16:9
• Active image generation using external input offset value
• Noise reduction : Luminance/chrominance
- Adaptive mean filter
- Horizontal : 9 tap
• Histogram Calculation
• Caption decoding for NTSC input
• CGMS decoding for HD/480P input
D52WLCD29CIRCUITS
Page 30
BLOCK DIAGRAMS
BLOCK DIAGRAMS
D52WLCD30DIAGRAMS
Page 31
BLOCK DIAGRAMS
D52WLCD31DIAGRAMS
Page 32
BLOCK DIAGRAMS
D52WLCD32DIAGRAMS
Page 33
BLOCK DIAGRAMS
D52WLCD33DIAGRAMS
Page 34
DISASSEMBLY
LAMP REPLACEMENT
WHEN TO REPLACE THE LAMP
¯ The projector image gets darker or starts to dete-
riorate.
¯ The lamp indicator is red (red, flashing alternately).
¯ The message “LAMP REPLACE” appears on the screen
when turning the projector on.
REPLACING THE LAMP
1. Turn the projector off and unplug the power cable.
(Let the lamp cool for more than 1 hour.)
2. Remove the four retaing screws on the lamp cover
and remove the lamp cover.
3. Remove the two retaing screws on the lamp case
(refer to fig 2).
4. Lift the wire handle of the lamp (refer to fig 3).
5. Pull out the handle slowly and remove the lamp
case.
6. Insert the new lamp gently into the correct position. Make sure it is inserted correctly.
7. Tighten the two retaing screws on the lamp case.
8. Replace the lamp cover and tighten the cover
screws. (Make sure the lamp cover is securely fastened. If lamp cover is open, the lamp indicator
flashes green and the projector will not turn on.)
DISASSEMBLY
< Fig. 1>
< Fig. 2>
RESETTING THE LAMP TIME
Reset the lamp time to zero by pressing the “?” key on
the remote control while in Stand-By mode. Then press
“9”, “8”, “7”, “6”, and the “OK” button. The three LEDs
in the front will flash for a moment.
LAMP LIFE TIME CONFIRMATION
Using the customer’s remote control, press and hold
the menu button. When the OSD menu disappears, press
numbers 9, 8, 7, 6 and press the OK button to enter
the ADJ mode. The display will show “Lamp Life Time
XX Hrs”.
D52WLCD34DISASSEMBLY
Page 35
DISASSEMBLY
CABINET DISASSEMBLY
To gain access to the circuit boards and the Optics Engine, the cabinet must be disassembled (This process requires two
people). Use caution when removing and installing screws, use a low torque setting on powered screwdrivers. When
removing the lower back cabinet piece, be careful not to break a switch that is located in the middle. This switch
prevents the TV from operating when the back cover is off, it must be closed or the TV will not turn on.
The main PCB can be removed without disassembling the cabinet. Remove the back cover and the two screws below the
jackpack. Then, the Main PCB assembly can be pulled out.
1. Remove the bottom decorative piece by prying one
end out slightly using a paint scraper or large screw
driver (Care should be taken not to damage any of the
decorative pieces). Then grip and pull forward (A
substantial amount for force is needed to remove this
piece).
2. Now remove the upper decorative piece in a similar
fashion. Carefully loosen one end and pull this piece
forward. Do not bend this piece excessively. Note: the
double-sided tape across the top must remain intact.
4. Now remove the screen assembly. It is held on with
screws on the front at the bottom and along the back.
5. Once the screws are removed, carefully pull the screen
a short distance away from the cabinet.
6. Remove the speaker and connections.
7. Now the screen can be removed.
3. Remove the lower back piece which is held on by
screws. Be careful not to break a switch that is located in the middle. This switch prevents the TV from
operation when the back cover is off, it must be closed
or the TV will not turn on.
D52WLCD35DISASSEMBLY
Page 36
DISASSEMBLY
8. Unscrew the front jackpack located on the left.
9. Then remove the screws holding the cover on.
10. Once the screws have been removed, move the cover
slightly forward and then up.
12. Remove the metal support bracket that is mounted
around the lens.
13. Remove the screws along the sides and across the
top.
14. Lift up and back slightly to remove the cover to
gain access to electrical components of the TV.
D52WLCD36DISASSEMBLY
Page 37
DISASSEMBLY
ELECTRICAL DISASSEMBLY
This LCD Projo has four removable circuit board sections and an optics engine section. The optics engine houses the
lamp, LCDs, lenses, and mirrors. Removing the optics engine is the most involved procedure. Do not open the optics
engine, remove it intact when returning it for exchange. The lamp and ballast are the only serviceable parts of the optics
engine.
Lens
Lamp Ballast
(Part of Optics)
Power Supply
Lamp
(Part of Optics)
DIGITAL BOARD
To remove the digital board, remove the two screws from the back and and disconnect the cables.
POWER SUPPLY
To remove the Power Supply, first remove the speaker. Then remove the two screws from the front and disconnect the
cables.
(Part of Optics)
Optics Engine
(Underneath the LCD Driver)
LCDs
(Part of Optics)
LCD Driver
Digital Board
includes Tuner/AV Switch,
Chroma, Digital, and Jackpack
Jackpack
(Part of Digital)
OPTICS ENGINE
1. To remove the Optics Engine, The LCD driver board must be removed first.
2. Unscrew the cable holders attached to the cage.
3. Then remove the the 4 screws holding the top and bottom of the cage together.
4. De-solder the three ground connections.
5. Remove the screws from the PCB and remove it from the cage.
6. Remove the bottom of the cage and that will provide access to the Optics Engine.
7. Before removing the optics engine, use hot glue below the control knobs to lock them in place. This will help prevent
the keystone and tilt settings from changing.
D52WLCD37DISASSEMBLY
Page 38
ADJUSTMENTS
ADJUSTMENTS
1. Application Object
This instruction is for the application to the LCD projection TV.
2. Notes
(1) The power supply for this unit is not to be used as an iso-
lation transformer.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed an environment
25!5°C of temperature and 65!10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100V, 60Hz in
adjusting.
(5) The set must be operated for 5 minutes preliminarily
before adjustment if there is no specific designation.
The preliminary operation must be performed after receiving 100% white pattern, but reception of the moving picture may also be possible in unavoidable case.
3. Composition of Adjustment Mode
(1) All adjustment mode are entered by pressing the IN-
START key on the SVC remote control, after adjustment
press the IN-START key to exit.
(2) Composition of adjustment mode: The first screen compo-
sition of pressing IN-START key on the SVC remote control.
EZ ADJUST V*.**
1. RGB Alignment
2. 62352
3. Gamma Adjust
4. Uniformity Adj
5. AD9883 Adjust
6. Lamp Replace
2) Step123 : Step selection when changing data.
ex) Step123:1 --> Change one by one when changing
data with Volume key
Step123:10 --> Change ten by ten when changing data
with Volume key
You can select 1 by press number key ‘1’, 10 by press
‘12’, 100 by press ‘123’. And you can change data by
1, 10, 100.
3) 10. H_position 315/315/315 : Actual adjusting menu.
4) Micom : V0.50 : Main Micom Version display of Digital
board.
5) SubMicom : V01.31 : Micom Version display of Tuner
board.
6) LCDMicom : V01.31 : Micom Version display of Drive
board.
7) Lamp : 16 : Lamp time display.
4. LCD Adjustment
4-1. NRS Adjustment
[ When the LCD panel load data on regular pixel using high
speed charge/discharge with sample & holder, the drain
width of TFT gradually decreases and the non-resistance
increases, and comes out regular noise on screen(shows
vertical line by 12 pixel)
This NRS signal is enforced charge/discharge signal so
that the ON/OFF time of TFT mode quickly before starting
active video signal, H/L level adjustment is possible to
each R, G, B.
(1) Required Test Equipments
1) PC Pattern Generator : 16 Step Gray Pattern
2) Fixation Stand
3) Remote Control for Adjustment
4) Circuit Jig for Adjustment(Except Driver Board Assy)
(fig. 1) The first screen of adjustment mode
(3) Select menu to adjust(turn to yellow) with using CH D, E
key above screen and press the enter key to adjust on the
wanting menu.
(4) After being inputed for SUB menu, select the SUB menu
with using CH D, E key and adjust the value of adjustment with using the volume F, G key.
(5) Press the IN-START key to exit after adjustment, when
(fig.1) appears, press again to exit the final adjustment
mode.
5) Decrease flicker by using Volume button.
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode
by pressing IN-START button on SVC Remote Control.
(Fig. 3)
5-2. Screen Position Adjustment
(1) Required Test Equipment
A remote control for adjustment
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Receive the main/sub signal of company through 13CH by
split screen.
D52WLCD39ADJUSTMENTS
Page 40
ADJUSTMENTS
(3) Horizontal Position Adjustment
1) Press In-START key on the SVC remote control to enter
the adjustment mode.
2) Select 1. RGB Alignment.
3) Select 1. H_position with channel key in adjust mode.
4) Adjust data with using the left/right key on the remote control in order to be left/right semmetry screen. (Three blocks
of the most outer block must be located the most outer
block.)
(4) Adjustment for Vertical Position
1) Select 2. V_position with channel key in adjust mode.
2) Change the data to symmetrized top and bottom of
screen(refer to Fig. 4) and then press the IN-START button on SVC Remote Control to get out of adjustment
mode.
US13CH
(Fig. 4) Adjustment for Horizontal/Vertical Position on Screen
5-3. Component2 Offset Adjustment
(1) Required Test Equipment
A remote control for adjustment, 801GF
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Receive the Component2.
4) Receive the 720P and HozTVBar Pattern of 801GF.
(4) Component & RGB Mode White Balance Adjustment
Do this adjustment when it is needed.(When there is severe
white balance gap in low level of AV input contrast.
1) Observe the white balance condition of low level(2-6 Gray
Level) after inputting 16 Gray pattern with RGB or component input. - Do adjustment when there is difference with
High level white balance in AV contrast or 16 Gray.
2) Press the ADJ key on R/C for adjustment to select 4.
AD9883A.
5. Red Offset and 7. Blue Offset are adjustable.
3) Adjust 5. Red Offset/7. Blue Offset value while watching
the screen and then make manual white balance correction in Low level.
(5. Red Offset -- Adjustment range !2step, 7. Blue Offset -
- Adjustment range !4step)
Note: 1 step change on R/C corresponds to 2 changs of data
while adjusting Offset.
5-4. Adjustment of White Balance and Gamma
(1) Required Test Equipments
1) Illuminometer (name of model : CA-100) 1EA —>
Measure color of projecting screen center
[ CA-110(name of model) is possible to measure White
Balance and Gamma —- leave it 20Cm from screen
center
Follow a measurement machine manual to set CA-100
and CA-110 measurement machine.
5) Circuit thing Jig for adjustment(Except Drive Board Assy of
adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1 level form 0 to 255 level.
(2) A equipment composition
Adjust at the same condition of equipment composition diagram.
HozTVBar Pattern
(3) Offset Adjustment
1) Press IN-START key on the SVC Remote Control to enter
the adjustment mode after more than 10 seconds of
receiving the signals.
2) Press 5. AD9883 adjust to adjust .
3) When the AD9883 Gain Adjust has appeared after AD9883
Offset Adjust, the adjustment is completed.
D52WLCD40ADJUSTMENTS
(3) Preparation for Adjustment
Connect the equipment follow Fig. 2 and place the set on the
fixation stand.
1) Select the VDP Test Pattern signal to R1, G1, B1.
2) Press the IN-START key on SVC remote control to select
2.62352 and then select 5.RVREF, 8.GVREF, 12.BVREF
in adjust mode.
3) Adjust the luminance of CA100 below 0.75Cd. (The adjustment range is 196~202)
4) Exit adjustment mode by pressing IN-START button on
SVC Remote Control.
5) Press the IN-START key on SVC remote control and select
3.7050 RGB Set.
6) Check the data 1.RContrast, 8.GContrast, 15.BContrast is
515. Otherwise set the data 515 by using volume button.
Page 41
ADJUSTMENTS
(4) Adjustment Sequence
Gamma Adjust Mode
100
100
80
1
234
2
453
3
724
16
RGB 456 Step123
216
411
740
216
387
780
1) Output the 255,255,255 signal of VDP Test Pattern, then
display the maximum white pattern on screen.
2) Gamma Adjust Mode is display as below when select
8.Gamma Data by selecting IN-START key on SVC
remote control.
3) Change the 16 Step RGB Data to select white balance
x=283, y=294.
[ The color coordinates are set to x:283, y:297 in actual
video signal, when the color coordinates are x:293, y:294
in VDP Pattern.
4) Measure the luminace with changed data.
5) Set the Gamma data of 16 step to 2.5 on the basis of
measured luminance data in 3).
(Max luminance *(n1/16)**2.5) — Max luminance : measured luminance data n1 = every step unit when separating signal level to 16 step)
6) Output the 240, 240, 240(15th data in max white output
signal level) in the VDP Test Pattern, change the 15th
RGB Data value to show white balance x=283, y=294 and
measured step luminance in 5).
7) Output the 224, 224, 224(14th data in max white output
signal level) in the VDP Test Pattern, change the 14th
RGB Data value to show white balance x=283, y=294 and
measured step luminance in 5).
8) As shown above, output the VDP Test Pattern signal(208/192/176/160/144/128/112/96/80/64/48/32/16) and
change the RGB Data value of each step to show white balance x=283, y=294 and measured lumincance in 3).
* 1st Column : 16 Step Level
* 2nd Column : R Adjustment
Data
* 3rd Column : G Adjustment
Data
* 4th Column : B Adjustment
Data
(5) Gamma adjustment manually
This adjustment(after finish the 3-4) is to check whether
Gamma/White Balance adjustment are well adjusted and
make correction manually.
1) Prepare the PC Pattern Generator to output R/G/B of 16
step and 64 step Gray Pattern.
2) Equipment composition : Follow Fig. 2.
3) Turn on the Jig for adjustment.
4) Select the RGB_PC by pressing the input select button on
Remote Control.
5) Output the 16 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray.
If it’s not, press the IN-START button on SVC Remote
Control and then adjust the level data of each step manually in sub menu of No. 8.Gamma Data.
6) Output the 64 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray or whether there is Gamma
noise.
If there’s any problem, adjust in 5).
7) After finishing adjustment, exit adjustment mode by using
IN-START button on SVC Remote Control.
5-5. White Uniformity Adjustment
(1) Required Test Equipments
1) Uniformity measurement equipment : Equipment which can
measure chromaticity in the whole screen
2) Set Stand 1EA
3) Remote Control for Adjustment
4) Circuit thing Jig for Adjustment(Except Driver Board Assy
of adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1 level form 0 to 255 level.
(2) A equipment composition
Compose the equipment follow Fig. 2 and place the set on
the fixation stand.
(3) Preparation for Adjustment
1) Composite the equipment as shown Fig 2, and place the
set on fixation stand.
2) After inputting company channel 13, adjust color uniformity
like Horizontal/Vertical position adjustment of input signal
part adjustment by using Remote Control for adjustment.
3) After pressing IN-START key on SVC Remote Control for
adjustment, select the adjustment mode 5.7050 Uniformity.
Refer to register value and correct register value if need.
<Resister Explanation about uniformity adjustment>
1. RamCtrl : s/w saving uniformity write order(Do not adjust)
2. CSHP : Horizontal start point designation ---adjustable
3. CSVP : Vertical start point designation ---adjustable
4. CEHP : Horizontal END point designation ---adjustable
5. CEVP : Vertical END point designation ---adjustable
17. GL1H : Upper 9bit of MID2 brightness correction coefficient in G MIN.
--- Change according to GMIN and GMID2 value.
18. GL1L : Lower 9bit of MID2 brightness correction coefficient in G MIN.
--- Change according to GMIN and GMID2 value.
19. GL2H : Upper 9bit of MID1 brightness correction coefficient in G MID2.
--- Change according to GMID2 and GMID1 value.
20. GL2L : Lower 9bit of MID1 brightness correction coefficient in G MID2.
--- Change according to GMID2 and GMID1 value.
21. GL3H : Upper 9bit of MAX brightness correction coefficient in G MID1.
--- Change according to GMID1 and GMAX value.
(use it while adjusting 4 coefficient)
22. GL3L : Lower 9bit of MAX brightness correction coefficient in G MID1.
--- Change according to GMID1 and GMAX value.
(use it while adjusting 4 coefficient)
23. BL1H : Upper 9bit of MID2 brightness correction coefficient in B MIN.
--- Change according to BMIN and BMID2 value.
24. BL1L : Lower 9bit of MID2 brightness correction coefficient in B MIN.
--- Change according to BMIN and BMID2 value.
25. BL2H : Upper 9bit of MID1 brightness correction coefficient in B MID2.
--- Change according to BMID2 and BMID1 value.
26. BL2L : Lower 9bit of MID1 brightness correction coefficient in B MID2.
--- Change according to BMID2 and BMID1 value.
27. BL3H : Upper 9bit of MAX brightness correction coefficient in B MID1.
--- Change according to BMID1 and BMAX value.
(use it while adjusting 4 coefficient)
28. BL3L : Lower 9bit of MAX brightness correction coefficient
in B MID1.
--- Change according to BMID1 and BMAX value.
(use it while adjusting 4 coefficient)
29. RLMIN : Setting up the MINIUM Level of R --- Set under
200
30. RLMID2 : Setting up the MIDDLE 2nd Level of R --Middle level when 3coefficient
31. RLMID1 : Setting up the MIDDLE 1st Level of R --- Max
level when 3coefficient
32. RLMAX : Setting up the MAX Level of R
33. GLMIN : Setting up the MINIUM Level of G --- Set under
200
34. GLMID2 : Setting up the MIDDLE 2nd Level of G --Middle level when 3coefficient
35. GLMID1 : Setting up the MIDDLE 1st Level of G --- Max
level when 3coefficient
D52WLCD42ADJUSTMENTS
Page 43
ADJUSTMENTS
36. GLMAX : Setting up the MAX Level of G
37. BLMIN : Setting up the MINIUM Level of B --- Set under
200
38. BLMID2 : Setting up the MIDDLE 2nd Level of B --Middle level when 3coefficient
39. BLMID1 : Setting up the MIDDLE 1st Level of B --- Max
level when 3coefficient
40. BLMAX : Setting up the MAX Level of B
41. HVSCAN : Setting up the scan direction while adjusting
unifomity - Do not adjust
42. TestMode : uniformity adjustment test - Do not adjust
(4) Adjustment Sequence
1) Adjust the screen coordinates as shown below.
0 1 2 3 ............xx..........15 16
1
.
yy
.
11
12
(Fig. 5) Screen divisio diagram for uniformity adjustment
5-6. Brightness Adjusment of Main/Sub screen
Operate this adjustment when the brightness of Main/Sub
screen is different.
(1) Receive RF 06Ch. to Main/Sub screen in twin picture.
(2) Let the screen clearly.
(3) Check the “US06CH” with naked eyes in 06Ch. pattern
and if there is difference, adjust like this.
- The field and the letters are distinguished.
(4) Adjusting Sub screen
1) Press the “adj” key on R/C for adjustment to select 1.
VPC3230 main.
2) Adjust to 17. Luma Contrast of adjustment item with +/key. (initial value 48)
(5) Adjusting Main screen
1) Press the “adj” key on R/C for adjustment to select 1.
VPC3230 sub.
2) Adjust to 17. Luma Contrast of adjustment item with +/key. (initial value 48)
* Ask for repairs when the data value is changed over !5.
5-7. Lamp Replace
Use it when the Lamp time is ‘0’.
Press the IN-START key on SVC remote control for adjustment to select Lamp replace and adjust with volume key.
2) Output the VDP TEST PATTERN signal correspond to the
Max value.
Read the white coordinates and communicate 3 line with
ET7050 IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color uniformity of max point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
3) Output the VDP TEST PATTERN signal correspond to the
MID value.
Read the white coordinates and communicate 3 line with
ET7050 IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color uniformity of mid point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
4) Output the VDP TEST PATTERN signal correspond to the
MIN value.
Read the white coordinate and communicate with ET7050
IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color uniformity of miner point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
5) White the miner, middle, maximum data for each point to
confront to each MICOM address.
D52WLCD43ADJUSTMENTS
Page 44
430
630
410
420
120
660
670
121
300
310
680
640
650
303
304
302
301
305
306
307
123
620
610
580
600
124
125
503
501
122
174
520
540
530
550
560
502
EXPLODED VIEW
EXPLODED VIEW
D52WLCD44EXPLODED VIEW
Page 45
EXPLODED VIEW
No.Part No.
120120-D38ESPEAKER,MID-RANGE LG FOSTER 8 OHM 15/25W 87DB 12
1216400VG0001BSPEAKER,TWEETER NO FOSTER 8 OHM 20W/30W XX D77