Thursday, November 05, 2015

SAMSUNG P2470HD LCD MONITOR SERVICE MODE SOFTWARE UPDATE AND TROUBLE SHOOTING

SAMSUNG P2470HD 


LCD MONITOR

 SERVICE MODE SOFTWARE UPDATE AND TROUBLE SHOOTING 

Self-Test Feature Check
Your monitor provides a self test feature that allows you to check whether your monitor is functioning properly.
1. Turn off both your computer and the monitor.
2. Unplug the video cable from the back of the computer
3. Turn on the monitor.
If the monitor is functioning properly, you will see no signal display
4. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor. If your monitor screen remains blank after using the previous procedure, check your video controller and computer system; your monitor is functioning properly.
Warning Messages
If there is something wrong with the input signal, a message appears on the screen or the screen goes blank although the power indicator LED is still on. The message may indicate that the monitor is out of scan range or that you need to check the signal cable.
Environment
The location and the position of the monitor may influence the quality and other features of the monitor. If there are any sub woofer speakers near the monitor, unplug and relocate the woofer to another room. Remove all electronic devices such as radios, fans, clocks and telephones that are within 3 feet (one meter) of the monitor.
Useful Tips
A monitor recreates visual signals received from the computer. Therefore, if there is trouble with the computer or the video card, this can cause the monitor to become blank, have poor coloring, noise, Video mode not supported, etc. In this case, first check the source of the problem, and then contact the Service Center or your dealer. 
Judging the monitor’s working condition If there is no image on the screen or a “Not Optimum Mode”, “Recommended Mode 1920 X 1080 60Hz” message comes up, disconnect the cable from the computer while the monitor is still powered on.
# If there is a message coming up on the screen or if the screen goes white, this means the monitor is in working condition.
# In this case, check the computer for trouble.
Troubleshooting
No Power
SYMPTOM
The LED on the front panel of the monitor does not work when the power is connected and the
Power button is pressed.
CHECK POINT
Check if the Power switch on the rear panel of the monitor has been turned on.
Check the SMPS fuse and the IP-Board output power.
Check the connection between the IP-Board and the Main Board inside the monitor.
Check the power part of the Main Board and check if a similar symptom appears at another
output terminal.
ALSO CHECK
Does proper 14.5V appear at pin No. 2 of CN1001? Does proper 5V appear at pin No. 6 and 7 of CN1001? > Check IP Board
Does proper 14.5V appear at BD1013?  Does proper 5V appear at BD1021? > Check related circuit of CN1001.
Does proper 3.3V appear at pin No.1 of IC1024? > Check related circuit of IC1024.
Does proper 14.5V appear at IC1023? > Check related circuit of IC1022.
PC (ANALOG) No Screen
SYMPTOM
The LED power is on but no picture is displayed on the screen when the D-SUB cable is connected
CHECK POINT
Even though the LED power turns on, the screen is blank when connecting the VGA cable.
Check the D-sub cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
ALSO CHECK
Does led persists green light after power on? > Check IP board
Does proper 5V appear at pin No. 9 of CN8003? > Check D-sub cable connection
Does proper V-sync  and H-sync appear at C809 and C808? > Check PC state
Does proper clock signals appear at pin NO.11,12,23,24 of CN1005? > Change main board because of scaler problem
Check connection between main board and panel. Change Panel.
DVI No Screen
SYMPTOM
The LED power is on but no picture is displayed on the screen when the DVI cable is
connected.
CHECK POINT
Check if the DVI cable has been connected.
Check if the LVDS cable has been properly connected to the LCD panel.
Check if the Inverter board has been connected properly to the lamp connector of the LCD panel.
ALSO CHECK
Does led persists green light after power on? > Check IP board
Dose proper 5V appear at pin No. 14 of CN901? > Check DVI cable connection
Does proper clock signals appear at pin No. 2 and NO.4 of RA904? > Change RA904
Does proper clock signals appear at pin NO.11,12,23,24 of CN1005? > Change main board because of scaler problem
Check connection between main board and panel. Change Panel.
HDMI No Screen
SYMPTOM
The LED power turns on but the screen is blank when the HDMI cable is connected.
CHECK POINT
Check the HDMI cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
Check the circuit related HDMI input and scaler operation.
ALSO CHECK 
Dose proper 5V appear at pin No. 18 of CN6009?
Does proper signals appear at pin No.15(SCL) 8 and No.16(SDA) 9 of CN6009?
Does proper clock signals appear at pin NO.9 and NO.10 of D6005?
Does proper clock signals appear at pin NO.11,12,23,24 of CN1005?
Check connection between main board and panel. Change Panel.

Faults and Corrective Actions
Symptoms: DVI signals are not recognized.
Causes: This fault occurs when the PC does not recognize the mode information because the DVI DDC has not been input to the monitor.
Corrective Actions: Input the DVI DDC to the monitor
Symptoms: When the monitor is turned on, only a full white pattern is displayed continually regardless of the signals.
Causes: This fault occurs when only the lamp power is supplied and no video signals are input to the panel due to a fault or incorrect connections of the LVDS cable.
Corrective Actions: Replace or reconnect the LVDS cable correctly so that video signals can be supplied to the panel
Symptoms: When connecting the DVD, no occurs on the screen.
Causes: The HDCP key is not inserted.
Corrective Actions: Enter the HDCP key.
How to Access Service Mode
Entering Factory Mode
To enter “Service Mode” Press the remote -control keys in this sequence :
# If you do not have Factory remote - control
Power OFF > INFO > MENU > MUTE > Power ON
# If you have Factory remote – control
PICTURE ON > INFO > FACTORY
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0~9)
2. Function - Control Key : Source(ENTER), Menu, VOL-, VOL+, CH-, CH+, POWER
White Balance –Calibration
Method of Color Calibration (Component)
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN port
2) Press the Source key to switch to “Component” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
Method of Color Calibration (PC)
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port
2) Press the Source key to switch to “PC” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
Method of Color Calibration (HDMI)
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI IN port
2) Press the Source key to switch to “HDMI” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “HDMI Calibration” menu.
6) In “HDMI Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.
USB Download Method
Samsung may offer upgrades for TV’s firmware in the future. Upgrades will be possible by connecting a USB drive to the USB port located on your TV.
1. Insert a USB drive containing the firmware upgrade into the USB port on the rear of the TV.
2. Press the MENU button to display the menu.
Press the UP or DOWN button to select “Support”, then press the ENTER button.
3. Press the UP or DOWN button to select “SW Upgrade”, then press the ENTER button.
The message “Scanning for USB. It may take up to 30 seconds.” is displayed.
4. The message “Upgrade version XXXX to version XXXX? The system will be reset after upgrade.” is displayed. Press the RIGHT or LEFT to select the “OK”, then press the ENTER button.
Please be careful to not disconnect the power or remove the USB drive while upgrades are being applied. The TV will turn off and turn on automatically after completing the firmware upgrade. Please check the firmware version after the upgrades are complete. When software is upgraded, video and audio settings you have made will return to their default (factory) settings..
Software Upgrade
Program Upgrading - MAIN
1. If you select MENU > 
Support > Software Upgrade on remote control, you’ll see below picture
2. Press ENTER, then you’ll see below picture. Select Yes
3. Micom program is now upgrading as below picture.
After Software Upgrade is process by 100%, the monitor is automatically turn off and on.