HP LT4200 42 User Manual

Illustrated Parts & Service Map

HP LT4200 42-Inch LCD High-Definition Television

tained herein. Intel, Pentium, Intel Inside, and the Intel logo are trademarks or registered trademarks of the Intel Corporation and its subsidiaries in the U. S. and other countries.

Document Number 454402-001. 1st Edition June 2007

Key Specifications

Resolution 1920 (H) x 1080 (V)

Brightness 500 cd/m2

Contrast ratio 1200:1

Viewing angle 176 degrees

Response time 8 ms

Expected lifetime 60,000 hours

Scalar Trident LX66

Supported input 480i, 480p, 720p, 1080i, 1080p (HDMI only)

Connectivity AV in (2), Component In (YPbPr) (2), HDMI, (3), S-Video In (2),

Speakers 2 x 10W, 1 way

Tuning ATSC/NTSC/Clear - QAM

Power supply 120 V AC 60 Hz

Power consumption 300 W

Panel manufacturer CMO

Antenna In (1), PC VGA In (1), Analog Audio In (L/R) (5), Pc Audio In (1), RS-232c (1), USB Port (1), Audio Out (1), SPDIF Out (1)

Boards

1 Main board assy, including:

- Main board

- Cable: Main board to power supply

2 Inverter board assy, including:

- Inverter boards: Master and slave (master shown)

- Cables: Master and slave

3 Control board assy, including:

- Control board

- LVDS cable

- Ribbon cables (4)

4 Keypad/Infrared assy, including:

- Keypad buttons

- Keypad PCA board

- Infrared board

- Cable: Main board to keypad

455595-001

455598-001

455602-001

455604-001

Covers/mounting/stand

1 Stand neck assy, including:

- Stand neck

- Repair screw kit

* Stand base 452086-001

2 Back cover/bucket 452094-001

3 Mesh bracket board cover 452098-001

4 Internal support wall mount 452097-001

5 I/O bracket with AC inlet 452126-001

*Not shown

455589-001

Misc parts

1 Power supply assy, including:

- Power supply

- Cable: Power supply to main board

2 Speakers (L and R and wire connectors) 452108-001

3 Front bezel including speaker cover 452116-001

* Remote control 452113-001

* Cable clamp 452127-001

* VGA cord 453143-001

* Whole unit - head only 451706-001

* Power cord 8121-0740

* Repair screw kit, includes: 452128-001

Screw hex I#4-40/O#4-40 L7 NI (2) Screw pan W/FLT SPG M3*8L NI (4)

Screw T M4 P0.7 8L NI SAE1018 (4) W37A-Screw-speaker-M3X10 (2)

Screw M3X0.5 6L black ZN (4) Screw M3 6L P T black ZN (4)

Screw M4 6L M black ZN W32A (10) Screw M4 10L P T black ZN W32A (4)

Screw M5 15L M black ZN W32A (8) Screw tap flat M4*10L NI (4)

*Not shown

455592-001

HP LT4200 42-Inch LCD High-Definition Television 454402-001 page 1

Component Placement

I/O Connectors

Name

HDMI Digital High Definition Input Video Input Connector with

VGA VGA monitor input with audio L/R (line in)

Audio-Input • Digital (Optical) in Dolby Digital or PCM format) (S/

ANT/Cable in (RF input) 75-ohm unbalanced, F-type for VHF/UHF/CATV in

Component High Definition Input • 1: Y, Pb, and Pr, and audio L and R

Serial RS-232 Serial input (Commercial use only)

Standard Definition Input • AV Input 1: S-Vid, Video, and Audio L and R

Service Port USB (For firmware upgrade use)

Description

HDCP - Type A

• HDMI 1 (with HDMI audio in L and R)

• HDMI 2

• HDMI 3 Audio L and R must be set to PCM at the source across HDMI.

PDIF)

• Audio Output L and R stereo analog (RCA)

• 2: Y, Pb, and Pr, and audio L and R

• AV Input 2: S-Vid, Video, and Audio L and R

Description No Description

1 Main board 5 Speaker right

2 Keypad board 6 Power supply unit board

3 IR board 7 AC socket

4 Speaker left 8 Inverter

Main Board Layout

Connector Specification Description

CN19 13 pins/ROHS Power supply from power converter board CN114

CN15 28 pins/ROHS LVDS output signal (Between main board and panel)

CN18 4 pins/ROHS Audio power

CN12 11 pins/ROHS Keypad and IR control (connect to keypad board and IR

LED Indicators (all on main board)

Indicator Blink Frequency Failure Part

Amber and aqua LED blinking 1 sec interval MCU Host link error

Amber LED blinking 1 sec interval TAFE does not respond

Aqua LED blinking 1 sec interval Tuner does not respond

Amber LED blinking 2 sec interval Digital Demodulator does not respond

Aqua LED blinking 2 sec interval Audio process does not respond

Amber and aqua LED blinking 2 sec interval More than two I2C devices error

board)

TV Indicators and Controls

POWER Power button turns on the TV or places it in standby mode.

MENU Menu displays the on-screen display (OSD) or closes the OSD menu.

SELECT SELECT starts the Auto Sync function for a connected PC signal. In an

SOURCE Source (SRC) selects the input Menu. In an OSD menu, this functions

+CH

-CH

+VOL

-VOL

LED Indicator (left)

Remote Control Sensor (Right)

SimpleMenu

Main Sub1 Sub2/Options

Picture Mode Vibrant

Audio Mode Voice

Setup Caption On

OSD menu, selects the highlighted item in the OSD.

as a back button or moves you up one item or menu level.

Channel (CH) selects the next or previous channel. In an OSD menu, press these buttons to move up or down in the menu.

Volume (VOL) raises or lowers the sound level. In an OSD menu, press these buttons to move right or left in the menu or to adjust an item.

• Amber: TV is powering on (light turns off after about 30 seconds).

• HP Aqua Blue: TV is off but plugged into the power source.

• No light: TV is on or AC power cord is disconnected.

Receives the signal from the remote control.

Standard Studio User

Brightness

Contrast

Saturation

Hue

Sharpness

Color Temp Cool

Aspect Ratio Aut o

PC Auto Sync

Auto Volume On

Virtual Surround Off

Speaker On

Default Settings Reset

Standard

War m

16:9 Mode 4:3 Mode Zoom1 Zoom2 Panorama

Standard

Music Other

Off

Theater Music Hall

Off

On Mute

Wiring Diagram

HP LT4200 42-Inch LCD High-Definition Television 454402-001 page 2