HP Ld4700 User Guide

A Troubleshooting
Solving Common Problems
The following table lists possible problems, the possible cause of each problem, and the
recommended solutions.
Problem Possible Cause Solution
No image is displayed. Power cord not connected. Be sure the power cord is properly
connected to the outlet.
●Verify that the outlet has power to
it.
●Check that the fuse or breaker has
not tripped or burned out.
See if the power switch is turned on.
May need service.
Power is on, power indicator is blue, but
the screen...

Problem Possible Cause Solution
Check signal cable message appears. Signal cable is not connected. The signal cable between the PC and
monitor is not connected.
Check the signal cable.
Press the INPUT button on the remote
control to check the input signal.
“Unknown Product” message appears
when the monitor is connected.Monitor driver is not installed. Install the monitor driver, which is
provided with the monitor or download
from the HP Web site
(
http://www.hp.com).
See if the plug & play function is...

Problem Possible Cause Solution
No sound. Audio cable not connected. Check that the audio cable is properly
connected. Adjust the volume. Check if
the sound is set properly.
Sound is too dull. Equalizer is not balanced. Select the appropriate sound equalize.
Sound is too low. Sound needs adjusting. Adjust the volume by pressing the
volume buttons on the remote control.
Screen has poor color resolution (16
colors).Color is not set correctly. Set the number of colors to more than
24 bits (true color)....

B Technical Specifications
NOTE:All performance specifications are provided by the component manufacturers. Performance
specifications represent the highest specification of all HPs component manufacturers typical level
specifications for performance and actual performance may vary either higher or lower.
HP LD4200 LCD Monitor
Table B-1  HP LD4200 Specifications
Display
Type106.73 cm
TFT LCD42 inches
Viewable Image Size 106.73 cm diagonal 42-inch diagonal
Pixel Pitch 0.681 mm x 0.681 mm  
Maximum Weight...

Table B-1  HP LD4200 Specifications (continued)
Power
Rated VoltageAC 100-240 V~ 50/60 Hz 2.2 A
Japan: AC 100 V~ 50/60 Hz 2.2 A 
Power Consumption
On Mode
Sleep Mode
Off Mode220W Typical
≤ 1W (RGB) / 4W (HDMI/DVI)
≤ 1W 
Maximum Resolution
RGB
HDMI/DVI1920 x 1080 @ 60Hz
1920 x 1080 @ 60Hz (if supported by OS or video card type)
Recommended Resolution
RGB
HDMI/DVI1920 x 1080 @ 60Hz
1920 x 1080 @ 60Hz (if supported by OS or video card type)
Horizontal Frequency
RGB
HDMI/DVI30 - 83kHz
30 - 83kHz 
Vertical...

HP LD4700 LCD Monitor
Table B-2  HP LD4700 Specifications
Display
Type119.28 cm
TFT LCD47 inches
Viewable Image Size 119.28 cm diagonal 47-inch diagonal
Pixel Pitch 0.5415 mm x 0.5415 mm  
Maximum Weight
Without Stand & Speaker
With Speaker
With Stand
With Stand & Speaker26.08 kg
26.83 kg
29.56 kg
30.84 kg57.50 lbs.
59.15 lbs.
65.17 lbs.
67.99 lbs.
Dimensions (Without Stand & Speaker)
Height
Depth
Width66.10 cm
11.87 cm
111.70 cm26.02 inches
4.67 inches
43.98 inches
Dimensions (With Speaker)
Height...

Table B-2  HP LD4700 Specifications (continued)
Recommended Resolution
RGB
HDMI/DVI1920 x 1080 @ 60Hz
1920 x 1080 @ 60Hz (if supported by OS or video card type)
Horizontal Frequency
RGB
HDMI/DVI30 - 83kHz
30 - 83kHz 
Vertical Frequency
RGB
HDMI/DVI56 - 76Hz
56 - 60Hz 
Synchronization Type Composite/Separate/Digital  
Input Connector 15-pin D-Sub type, HDMI (digital), S-Video, Composite Video,
Component, RS-232C
Environmental Conditions
Operating Temperature
Storage Temperature0 ~ 35° C, Humidity 10% ~...

Table B-3  HP LD4200 and LD4700 Factory Preset Display Modes
(continued)
Preset Pixel Format Horz Freq (kHz) Vert Freq (Hz)
*9 1280 x 720 44.772 59.855
*10 1280 x 1024 63.981 60.02
11 1280 x 1024 79.98 75.02
*12 1600 x 1200 75 60
*13 1680 x 1050 65.290 60
*14 1920 x 1080 67.5 60
1 ~14 RGB Mode
* HDMI/DVI Mode
DTV Mode
 Component HDMI/DVI (DTV)
480i o x
480p o o
576i o x
576p o o
720p o o
1080i o o
1080p o o
NOTE:DTV/PC selection on RGB and HDMI/DVI inputs is available for PC resolutions 640 x
480/60Hz,...

C Controlling the Multiple Product
Use this method to connect several monitors to a single computer. You can control several monitors
at a time by connecting them to a single computer.
Connecting the Cable
Connect the RS-232C cable as shown in the following illustration. The RS-232C protocol is used for
communication between the computer and the monitor. You can turn the monitor on/off, select an
input source or adjust the OSD menu from the computer.
RS-232C Configurations
7-Wire Configurations
(Standard...

Communication Parameter
●Baud Rate: 9600buadRate (UART)
●Data Length: 8bits
●Parity Bit: None
●Stop Bit: 1bit
●Flow Control: None
●Communication Code: ASCII code
●Use a crossed (reverse) cable
Command Reference List
 COMMAND1 COMMAND2 DATA1 DATA2 DATA3
01. Power k a 00H -01H    
02. Input Select k b 02H -09H    
03. Aspect Ratio k c 01H -09H    
04. Screen Mute k d 00H -01H    
05. Volume Mute k e 00H -01H    
06. Volume Control k f 00H -64H    
07. Contrast k g 00H -64H    
08. Brightness k h 00H -64H...