Westinghouse LTV-27w2 User manual

Model No. LTV-27w2
LTV-32w1
Type No. : SLT27A
SLT32A
27” & 32” Color LCD TV Display

27" & 32" COLOR LCD TV DISPLAY
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Table of Contents
1. Precautions and Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Factory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Front Panel Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 User Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Internal Function Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 OSD Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Appendix A. Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Appendix B. Exploded Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix C. Block & Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-

27" & 32" COLOR LCD TV DISPLAY
1. Precautions and Safety Notices
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Prior to using this manual, please ensure that you have carefully followed all the procedures
outlined in the user manual for this product.
• Read all of these instructions.
• Save these instructions for later use.
• Follow all warnings and instructions marked on the product.
• Do not use this product near water.
• This display should be installed on a solid horizontal base.
• When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not
spray with liquid or aerosol cleaners.
• Do not expose this display to direct sunlight or heat. Hot air may cause damage to the
cabinet and other parts.
• Adequate ventilation must be maintained to ensure reliable and continued operation and
to protect the display from overheating. Do not block ventilation slots and openings with
objects or install the display in a place where ventilation may be hindered.
• Do not install this display near a motor or transformer where strong magnetism is gener-
ated. Images on the display will become distorted and the color irregular.
• Do not allow metal pieces or objects of any kind to fall into the display from ventilation
holes.
Slots and openings in the cabinet and the back or bottom are provided for ventilation. To
ensure reliable operation of the product and to protect it from overheating, those openings
must not be blocked or covered. The openings should never be blocked by placing the prod-
uct on a bed, sofa rug, or other similar surface. This product should never be placed near or
over a radiator or heat register. This product should not be placed in a built-in installation
unless proper ventilation is provided.

27" COLOR LCD TV DISPLAY
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2. Specifications
2.1 General
Item Specifications for LTV-27w2
Display Area 27” diagonal (26.97” viewable)
23.5” (H) x 13.2” (V)
Resolution 640x480, 800x600, 1024x768,
1280x720 (Native), 1280x768
Aspect Ratio 16:9
Pixel Pitch 0.1555mm(H) x 0.4665mm(V)
Lamp Life 60,000 hrs
Display Color 16.7 M
Transmissive Mode Normally black
Viewing Angle 170° (H) / 170° (V)
Brightness
(Luminance) 550cd/m2
Contrast Ratio 600:1
Response Time 16 ms
Separate Sync TTL Level
Horizontal Sync Positive/Negative
Vertical Sync Positive/Negative
Composite (Video In) 2xRCA
(Yellow, Red, White)
S-Video In S-Video
Component In YPbPr RCA,
Tuner In TV System
Antenna/NTSC
Audio In (2) RCA (Red/White)
(Audio L/R In)
Audio Out 3.5mm Stereo
(Headphone)
Compatibility Color System NTSC
Audio Output Built-in Speaker 2 x 9 watt speakers
Physical Dimensions 26.8"W x 22"H x 7.3"D (w/ Base)
26.8"W x 20.5"H x 4.0"D (w/o Base)
Weight 30 lbs w/Base
26 lbs w/o Base
Power Adapter Input – AC 90-240VAC
50/60 Hz (auto switch), 1.6A, universal
Power Consumption Normal Mode: Under 150W
Power off Mode : Under 3W
Operating Temperature 32°F to 95°F (0°C to 35°C)
Regulation Safety/EMC UL/C-UL, FCC-B
DDC Plug & Play VESA DDC1 and DDC2B
Function Function Key 7 keys
Preset Timing Mode (Pre-adjusted to reduce blinking: 1280 x 720 at 75Hz)
Warning: Do not set the graphics card in your computer to exceed these refresh rates; doing so may result in permanent
damage to the LCD TV.
Note: Product Specifications are subject to change without notice.
Graphic
Display Panel
Other
Connectors

Item Specifications for LTV-32w1
Display Area 32” diagonal (32.02” viewable)
27.9” (H) x 15.7” (V)
Resolution 640x480, 800x600,
1280x768, 1280x1024, 1360x768 (Native)
Aspect Ratio 16:9
Pixel Pitch 0.1730mm(H) x 0.5190mm(V)
Lamp Life 60,000 hrs
Display Color 16.7 M
Transmissive Mode Normally black
Viewing Angle 170° (H) / 170° (V)
Brightness
(Luminance) 550cd/m2
Contrast Ratio 1000:1
Response Time 8 ms
Separate Sync TTL Level
Horizontal Sync Positive/Negative
Vertical Sync Positive/Negative
Composite (Video In) 2xRCA
(Yellow, Red, White)
S-Video In S-Video
Component In YPbPr RCA,
Tuner In TV System
Antenna/NTSC
Audio In (2) RCA (Red/White)
(Audio L/R In)
Audio Out 3.5mm Stereo
(Headphone)
Compatibility Color System NTSC
Audio Output Built-in Speaker 2 x 9 watt speakers
Physical Dimensions 31.3"W x 25.5"H x 8"D (w/ Base)
31.3"W x 23.5"H x 3.8"D (w/o Base)
Weight 34 lbs w/Base
30 lbs w/o Base
Power Adapter Input – AC 90-240VAC
50/60 Hz (auto switch), 1.6A, universal
Power Consumption Normal Mode: Under 150W
Power off Mode : Under 3W
Operating Temperature 32°F to 95°F (0°C to 35°C)
Regulation Safety/EMC UL/C-UL, FCC-B
DDC Plug & Play VESA DDC1 and DDC2B
Function Function Key 7 keys
Preset Timing Mode (Pre-adjusted to reduce blinking: 1360 x 768 at 60Hz)
Warning: Do not set the graphics card in your computer to exceed these refresh rates; doing so may result in permanent
damage to the LCD TV.
Note: Product Specifications are subject to change without notice.
32" COLOR LCD TV DISPLAY
2. Specifications
2.1 Gener
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Graphic
Display Panel
Other
Connectors

27" & 32" COLOR LCD TV DISPLAY
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3. Testing
3.1. Environment
Test Condition
30 Minutes Warm-Up
Viewing Distance 1m
Input Characteristics
Input voltage range. 90Vac to 264Vac.
Input frequency range 50 or 60Hz ± 3Hz.
Power board output voltage 24V, 12V, 5VC, 5VSB +/-5%
Input current 50/60 Hz (auto switch), 0.8A/1.8A
Inrush current < 50A @ 115VAC, < 100A (MAX) @230VAC.
Operating Temperature 0° C to + 35° C (32° F to + 95° F)
Operating Relative Humidity 10% to 90% (no condensation)
Storage Temperature -20° C to + 60° C (-4° F to + 140° F)
Storage Relative Humidity 10% to 95% (no condensation)
Operating Altitude 0 meters to +3,000 meters
Storage Altitude 0 meters to +12,000 meters
Test Fixture & Equipment
Video Generator CHROMA & VCD/DVD/VCR/GAME/DVHS PLAYER
Pattern Generator CHROMA2225/VG828/VG848/VG858
3.2 Tests
Component 1&2, AV 1&2, S-Video, TV Function & Function Key test
YPbPr & Composite AV port & S-Video Port Toggle Test
Connect a YPbPr video signal to the Component port, and a composite video signal
to the AV port, and a S-Video Signal Source to the S-Video port. Using the OSD,
toggle through all the sources, and confirm that an image is displayed.
RF Signal Test
NTSC Cable Test. (Standard cable 125 Channel)
NTSC Air Test. (Antenna 69 Channel)
With a RF cable connected, a picture should be displayed.

27" & 32" COLOR LCD TV DISPLAY
Audio Test
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Test Condition
Base input audio waveform Sine wave 0.5Vr.m.s. (1.414Vp-p) @ 1KHz
Video setting Purity white at 1280 x 768 @ 60Hz
Contrast and Brightness Default
Balance = 0, Bass = 10, Treble = 10.
Connect an audio source to each audio input (VGA, DVI, AV x 2, and component x 2) and
the speakers should output sound.
Speaker Specifications
Line Input Connection 3.5 mm stereo Jack x 1, RCA Jack (L/R) x 5
Line Input Signal 0.5Vrms (1.414Vp-p)
Line Input Impedance 10KΩ
Maximum Power Output (electric) 9W x 2 @ 10 % THD at Freq.= 200Hz ~ 15KHz
Frequency response 200Hz – 15KHz into 8ΩLoad
Distortion < 10 % THD
Audio DPMS Speakers must be mute when the display is in power
saving mode

27" & 32" COLOR LCD TV DISPLAY
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Video Performance Test
VIDEO PORTS TO TEST
AV port S-Video port YCbCr/YPbPr TV Composite Video*
• The color from left to right should be White, Yellow, Sky Blue, Green, Magenta,
Red, and Blue.
• Some smearing or dot crawl between color
bars is acceptable.
• Use the Blue color filter to check Hue and
Saturation are in the optimized point.
(Saturation - Blue and White color should be
the same when seen through a blue color
filter.)
(Hue - Magenta and Sky Blue color should
be the same when seen through a Blue
color filter.)
• Crosshatch pattern should have no visible noise.
• In low bandwidth pattern, there shouldn’t
be any dots on the transition edges.
• In high bandwidth pattern, there shouldn’t
be any loss of resolution and the scaling
should be correct.
• This is a sample with no visible noise.
• There shouldn’t be any visible noise at transition edges.
• The gray scale should not be saturated at default value
-
-
The following tests should be conducted by connecting the video signal to one port at a time.
Color Bar
Pattern
(COL_SMPTE)
Multi Burst
Pattern
Black & White
Pattern
Gray Scale
Pattern
Crosshatch

27" & 32" COLOR LCD TV DISPLAY
Video Performance Test
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Connect a cable TV or RF pattern generator signal and set the RF sensitivity to 45 ~85dBµV. An
image should be displayed. If under 60dBµV, some snow noise is acceptable but there
should not be any color loss.
TV Channel Auto Scan
• The auto scan process should take less than 3 minutes.
• Pressing the “Menu” key should exit the TV channel scanning.
V-Chip & Close Caption Function Test
• Close Caption:
• Select “Close Caption” (In main picture OSD) to CC1, CC2, CC3, CC4, TT1, TT2, TT3, TT4.
• Using a FLUKE 54200 or VG848/858, test CC number 1, CC number 2, CC number 3, CC
number 4, CC number 5, CC number 6, CC number 7, CC number 8.
• Parental Control:
• Select the “Parental Control” in OSD and enter the password “0000”. Enter the TV
rating and setting all the rating to “LOCKED”.
• Using a FLUKE 54200 or VG848/858, test the CC Sequence, the image should be
locked and should show the “enter password” and rating message. After entering
the password and the image should display again.
Power Supply Tests
Power Consumption Test Table:
Audio Test
Connect a VGA audio input source to VGA audio input. The audio function of Balance, Bass,
and Treble should be working normally.
Connect AV1 & AV2 (AV & S-Video) audio input source to AV L/R audio input. The audio
function of Balance, Bass, and Treble should be working normally.
Connect Component 1 & 2 audio input source to Component 1 & 2 L/R audio input. The audio
function of Balance, Bass, and Treble should be working normally.
Audio Output Test: When each audio input has a source, then the audio output RCA jack
(L/R) should output 0.5Vrms (1.414Vp-p).
Note:
1. “Green” color for 00AAB, “Blue” color for 43AAB.
2. Amber (1sec) ➝Green (1sec) ➝Amber (1sec) ➝ Green (1sec)… continuously.
3. The power saving status is only for VGA / DVI PC mode (DMPS is on).
Power saving time is 30 seconds; in factory mode it is 3 seconds.
TV Status LED Color Video Signal Power Consumption Recover Time
Power On Green1Active <180W
Aging Note2NA <180W
Power Saving Amber3NA <3W
DC Power Off Off NA <3W
AC Power Off Off NA -

27" & 32" COLOR LCD TV DISPLAY
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3.3 Factory Settings
TV AV S-Video Component1 Component2 DVI Video DVI PC VGA
Mode Mode
Brightness 50 50 50 48 50 44 50 50
Contrast 45 45 45 50 50 50 50 50
Saturation 50 50 50 40 55 55 50 50
Hue 0
Color Temp. Color 3
Sharpness 0 0 0 0 0 0 None None
Aspect Ratio FILL
Backlight 100
Volume 30
Bass 10
Treble 10
Balance 0
MTS Stereo None None None None None None None
Mute OFF
Speaker Internal
Display Mode OFF
Main Source TV
PIP Source VGA
PIP Position H-position: 100, V-position: 100.
PIP Size SMALL
Audio From TV
TV/CATV CABLE STD
Closed Caption OFF
Sleep OFF
MPAA Rating None
TV PG Rating None
MENU Position H-position: 0, V-position: 0.
MENU Timeout 10 second
Language English
Transparency 3
DPMS ON
DC Power OFF