HP LT4200 42-Inch LCD High-Definition Television
454402-001
page 2
Component Placement
Main Board Layout
LED Indicators (all on main board)
I
/O Connectors
TV Indicators and Controls
SimpleMenu
No
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
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
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
Name
Description
HDMI
Digital High Definition Input Video Input Connector with
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.
VGA
VGA monitor input with audio L/R (line in)
Audio-Input
•
Digital (Optical) in Dolby Digital or PCM format) (S/
PDIF)
•
Audio Output L and R stereo analog (RCA)
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
•
2: 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
•
AV Input 2: S-Vid, Video, and Audio L and R
Service Port
USB (For firmware upgrade use)
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
OSD menu, selects the highlighted item in the OSD.
SOURCE
Source (SRC) selects the input Menu. In an OSD menu, this functions
as a back button or moves you up one item or menu level.
+CH
-CH
Channel (CH) selects the next or previous channel. In an OSD menu,
press these buttons to move up or down in the menu.
+VOL
-VOL
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.
LED Indicator
(left)
•
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.
Remote Control Sensor
(Right)
Receives the signal from the remote control.
Main
Sub1
Sub2/Options
Picture
Mode
Vibrant
Standard
Studio User
Brightness
Contrast
Saturation
Hue
Sharpness
Color Temp
Cool
Standard
Warm
Aspect Ratio
Auto
16:9 Mode
4:3 Mode
Zoom1
Zoom2
Panorama
PC
Auto Sync
Audio
Mode
Voice
Standard
Music
Other
Auto Volume
On
Off
Virtual Surround
Off
Theater
Music Hall
Speaker
On
Setup
Caption
On
Off
On Mute
Default Settings
Reset
Wiring Diagram