Westinghouse LTV-27W7, LTV-32W6, LTV-37W2 Schematic

Model No.: LTV-27w7 HD

LTV-32w6 HD LTV-37w2 HD

27”, 32” & 37” Color LCD TV Display

SERVICE GUIDE

COLOR LCD TV DISPLAY

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Table of Contents

1. Precautions and Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 LTV-27v7 HD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.2 LTV-32w6 HD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.3. LTV-37w2 HD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3. User Controls & Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1. User Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 On-Screen Display Menu (OSD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4. Servicing Environment and Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5. Assembly/Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Appendix A. Spare Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Appendix B. Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Appendix C. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

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 generated. 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 product 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.

COLOR LCD TV DISPLAY

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Item Specifications for LTV-27w7 HD

Display Area 27" Viewable Diagonal

Resolution

1366 x 768 Native

1280 x 1024, 1024 x 768, 848 x 480, 832 x 624

480i, 480P, 720P, 1080i

Aspect Ratio 16:9 Lamp Life 60,000 hrs Display Color 16.7 M Transmissive Mode Normally black Viewing Angle 176° (H) / 176° (V) Brightness (Luminance) 550cd/m

Contrast Ratio 1000:1 Response Time 8 ms Separate Sync TTL Level Horizontal Sync Positive/Negative Vertical Sync Positive/Negative

Composite (Video In) 1 x A/V RCA

S-Video In 1 x S-Video

Component In 2 x YPbPr

VGA In 1 x VGA (RGB)

Antenna In 1 x RF

HDMI In 1 x HDMI

Audio In (Dual RCA)

4 x RCA (Red/White)

(Audio L/R In)

Audio In (Mini)

1 x 3.5mm Stereo

(Headphone)

Audio In (2)

RCA (Red/White)

(Audio L/R In)

Audio Out (Dual RCA)

1 x RCA (Red/White)

(Audio L/R Out)

Compatibility Color System NTSC & ATSC Audio Output Built-in Speaker 2 x 10 watt speakers

Physical Dimensions 26.6" (W) x 21.9" (H) x 7.3" (D) Weight 27.7 lbs Power Adapter Input – AC 100-120VAC

Power Consumption

Normal Mode: 180W

Power off Mode : < 3W

Operating Temperature 32°F to 95°F (0°C to 35°C) Regulation Safety/EMC FCC-B, CSA (CUL) DDC Plug & Play VESA DDC1 and DDC2B Function Function Key 7 keys

2. Specifications

2.1 LTV-27w7 HD Specifications

Graphic

Display Panel

Connectors

Other

Note: Product Specifications are subject to change without notice.

COLOR LCD TV DISPLAY

2.2 LTV-32w6 HD Specifications

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Item Specifications for LTV-32w6 HD

Display Area 32" Viewable Diagonal

1366 x 768 Native

Resolution 1280 x 1024, 1024 x 768, 848 x 480, 832 x 624

480i, 480P, 720P, 1080i

Aspect Ratio 16:9

Lamp Life 60,000 hrs

Display Color 16.7 M

Transmissive Mode Normally black

Viewing Angle 170° (H) / 170° (V)

Brightness (Luminance) 400cd/m

Contrast Ratio 1000:1

Response Time 8 ms

Separate Sync TTL Level

Horizontal Sync Positive/Negative

Vertical Sync Positive/Negative

Composite (Video In) 1 x A/V RCA

S-Video In 1 x S-Video

Component In 2 x YPbPr

VGA In 1 x VGA (RGB)

Antenna In 1 x RF

HDMI In 1 x HDMI-HDCP

Audio In (Dual RCA)

4 x RCA (Red/White)

(Audio L/R In)

Audio In (Mini)

1 x 3.5mm Stereo

(Headphone)

Audio Out (Dual RCA)

1 x RCA (Red/White)

(Audio L/R Out)

Compatibility Color System NTSC & ATSC Audio Output Built-in Speaker 2 x 9 watt speakers

Physical Dimensions 31.4" (W) x 25.2" (H) x 8.3" (D)

Weight 37.5 lbs

Power Adapter Input – AC 100-120 VAC

60 Hz, 3A (Max)

Power Consumption

Normal Mode: 180W

Power off Mode : < 2W

Operating Temperature 32°F to 95°F (0°C to 35°C) Regulation Safety/EMC FCC-B, CSA (CUL) DDC Plug & Play VESA DDC1 and DDC2B Function Function Key 7 keys

Graphic

Display Panel

Connectors

Other

Note: Product Specifications are subject to change without notice.

COLOR LCD TV DISPLAY

2.3 LTV-37w2 HD Specifications

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Item Specifications for LTV-37w2 HD

Display Area 37" Viewable Diagonal

1366 x 768 Native

Resolution 1280 x 1024, 1024 x 768, 848 x 480, 832 x 624

480i, 480P, 720P, 1080i

Aspect Ratio 16:9

Lamp Life 60,000 hrs

Display Color 16.7 M

Transmissive Mode Normally black

Viewing Angle 178° (H) / 178° (V)

Brightness (Luminance) 550cd/m

Contrast Ratio 1000:1

Response Time 8 ms

Separate Sync TTL Level

Horizontal Sync Positive/Negative

Vertical Sync Positive/Negative

Composite (Video In) 1 x A/V RCA

S-Video In 1 x S-Video

Component In 2 x YPbPr

VGA In 1 x VGA (RGB)

Antenna In 1 x RF

HDMI In 1 x HDMI-HDCP

Audio In (Dual RCA)

4 x RCA (Red/White)

(Audio L/R In)

Audio In (Mini)

1 x 3.5mm Stereo

(Headphone)

Audio Out (Dual RCA)

1 x RCA (Red/White)

(Audio L/R Out)

Compatibility Color System NTSC & ATSC Audio Output Built-in Speaker 2 x 9 watt speakers

Physical Dimensions 37.3" (W) x 26.1" (H) x 8.2" (D)

Weight 48.9 lbs

Power Adapter Input – AC 100-120 VAC

60 Hz, 3A (Max)

Power Consumption

Normal Mode: 214W

Power off Mode : < 3W

Operating Temperature 32°F to 95°F (0°C to 35°C) Regulation Safety/EMC FCC-B, CSA (CUL) DDC Plug & Play VESA DDC1 and DDC2B Function Function Key 7 keys

Graphic

Display Panel

Connectors

Other

Note: Product Specifications are subject to change without notice.

COLOR LCD TV DISPLAY

3. User Controls & Connectors

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3.1 User Control

Use the MENU on the right side of the LCD TV or on the remote control to initiate the On Screen Display (OSD). The OSD controls are defined in the following section.

MENU 1. Menu Turn OSD Menu ON/OFF

+ VOL - 2. Volume + / -

Increase/Decrease sound volume or adjust a highlighted control while in the OSD Menu

+ CH - 3. Channel + / -

Channel up/down when input is TV or highlight a control while in the OSD Menu

INPUT 4. Input source

Select Active Video Input or choose a selection while in the OSD MENU

5. Power Power ON/OFF

Control Key

Speaker

IR receiver

Control keys

COLOR LCD TV DISPLAY

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1. S-Video Input

Connect to an external video device such as a digital cable/satellite receiver, VCR, DVD or video game system.

2. Video Input

Connect the Composite Video to an external video device such as VCR, DVD and video game system.

3. AV & S-Video Audio Input (Right / Left)

Connect an external audio source to this jack (Audio (R/L). This connection supports either S-Video or AV input.

4. SPDIF Output

Connect this output to an external audio receiver with SPDIF function.

5. Audio Output (Right / Left)

Connect this output to an external audio receiver.

6. ANT (RF-input)

Connect the LCD TV to an antenna or cable service.

7. SERVICE

For ATSC software update source.

8. VGA Audio IN

Connect to the Audio out (blue) from a computer.

9. VGA

Using a 15-pin VGA cable, connect to a computer or other device with a VGA output.

10. YPbPr1 Input

Connect an external video devices with component output to these jacks.

11. YPbPr1 Audio 1 Input (Left / Right)

Connect an external audio source to this jack.

12. YPbPr2 Input

Connect an external video device with component output to these jacks.

13. YPbPr2 Audio 2 Input (Left / Right)

Connect an external audio source to this jack.

14. HDMI input

Connect external video devices with HDMI output to this jack.

15. HDMI Audio Input (Left / Right)

Connect an external audio source to these jacks.

16. AC IN (Power)

Connect the power cord from AC IN to a power source.

3.2 Connectors

COLOR LCD TV DISPLAY

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3.3 On-Screen Display Menu (OSD):

All the functions can be adjusted either by the remote control or using the control keys on the right side of LCD TV.

To display the OSD main menu, press the Menu button on the right side of front control keys of the LCD TV or the MENU key on the remote control. Press

 /  arrow keys to

select desired OSD Menu and

 /  arrow keys to select desired OSD sub-menu.

IMAGE SETTING:

Function Name Function

BRIGHTNESS Brightness adjustment

CONTRAST Contrast adjustment

SATURATION Saturation adjustment

HUE Hue adjustment

SHARPNESS Sharpness adjustment (Sharpness cannot be adjusted in PC mode)

COLOR TEMP Color temperature adjustment (Color 1, Color 2, Color 3)

RESET

Select “YES” to call the factory default setting for image setting Select “NO” to keep your picture adjusts setting

VGA SETTING VGA setting adjustment

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