Sharp LC32GD7E How to enter service mode – adjustments – inverter circuit diagram- LCD COLOUR TELEVISION (Display)

Service mode, Back-light inverter circuit diagram, Lamp error detection, service adjustments - Flicker adjustment – Sharp LC32GD7E – LCD TV

Enter service mode
Pre-setup position: set is in TV mode
1. Press MENU button on top of the TV set to enter menu “direct control on TV set”
2. Press button “P ^” until “service” is shown in menu.
3. When service appears press the MENU button on the remote control within 1 sec.  Service menu appears.
4. Step with cursor buttons on remote control through the service menu to change settings.
5. Each modification of any value has to be memorized with the “OK” button on remote control.

ADJUSTMENT PROCEDURE

The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.

Enter the display process mode and then adjust COM BIAS. [Caution: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the settings are tampered in this mode, unrecoverable system damage may result.]

COM BIAS adjustment [Flicker]

Shift to the [COM BIAS] item with the cursor UP/DOWN key and select a numeric value with the cursor RIGHT/LEFT key.
Changing the numeric value with the cursor UP/DOWN key will make appear the test pattern. Make an adjustment so that the flicker near the center of the screen is minimized.

Back-light inverter schematic [Circuit diagram]

Inverter-1 schematic and pwb

Back-light inverter-2and PWB

Inverter Ground schematic

Lamp error detection

This liquid-crystal color TV incorporates a lamp error detection feature (lamp error detection) that automatically turns OFF the power for safety under abnormal lamp or lamp circuit conditions.
If anything is wrong with the lamp or lamp circuit or when the lamp error detection feature is activated for some reason, the following will result.
1 The power of TV main body is turned OFF about six seconds after it is turned ON. (The power LED on the front of the TV turns red from green and keeps blinking in red (ON for 250ms and OFF for 1sec)).
2 If occurs five times consecutively, it becomes impossible to turn ON the power. (The power LED keeps blinking in red (ON for 250ms and OFF for 1sec)).

Measures
1) Checking with lamp error detection OFF
Refer to "Entering and exiting the adjustment process mode" in the section 10-2 to enter the display process mode.
If there is a problem with a lamp or a lamp circuit, the lamp will go out. (The power LED is green.)
Then, you can check the operation to see if the lamp and lamp circuit are abnormal.
2) Resetting the lamp error count
After you have finished checking whether the lamp and lamp circuit are abnormal, reset the lamp error count. If a lamp error is detected five consecutive times, the power cannot be turned on.
Therefore, move to the [L ERR RESET] line, the 5th line on the first page of the "Display process mode", using the Cursor UP/DOWN key. Then, reset the [L ERR RESET] value using the Cursor RIGHT/LEFT key. In this case, press the Cursor UP/DOWN key to reset it to "0".

Hisense PDP3208 (TPW3208) – Service Mode – Software update – Troubleshooting - Plasma display television

Service mode

1. Press on the [MENU] key.
2. Select the sub-menu [PICTURE] with [CH∧/CH∨].(or sub-menu[SOUND])
3. Select the parameter [Brightness] with the keys [VOL∧/VOL∨]. (or balance)
4. Press a series of numbers [0] [5] [3] [2] quickly.
Note: The factory lock initial password is “0000”,the general password is “0532”

SERVICE MODE MENU includes: Fac. Menu. [Click on the pictures to zoom in]

Service hadn’t better amend factory data, because it is better settings data.  Do not tell user the purpose password.

Screen Image retention Do not display a still image (such as on a video game or when hooking up a PC to this PDP) on plasma monitor panel for a long time as it can cause screen image retention. This image retention is also known as “screen burn”. To avoid such image retention, reduce the degree of brightness and contrast of the screen when displaying a still image.

A still image displayed too long may cause permanent damage to the PDP Panel

Watching the PDP TV in 4:3 format or other non full screen formats for a long period of time may leave traces of borders displayed on the left, right and centre of the screen caused by the difference of light emission on the screen. Playing a DVD or a game console may cause similar effect to the screen. Damages caused by the above effect are not covered by the Warranty.

Afterimage on the Screen Displaying still images from Video games and PC for longer than a certain period of time may produce partial afterimages. To prevent this effect, reduce the brightness and contrast when displaying still images for a long time.

Height The PDP can normally operate only under 2000m in height. It might abnormally function at a place over 2000m in height and do not install and operate there.

Avoid operating the TV at temperatures below 5℃(41°F)

The signal board is composed by the main board .The main chip for video decoder is MST9E19A produced by MSTAR co., ltd.

Software updating

You can update the software through a special tool.

Connect the Debug board to the TV use VGA interface, then connect the Debug board to the computer, just as the pictures showing.

Set the ISP_TOOL4.0.9 -------only for the first time update.

DLPORTIO.dll and FTD2XX.DLL must be in the same folder

Find the folder where the ISP_TOOL4.0.9 lies in.

Note: DLPORTIO.dll and FTD2XX.DLL must be in the same folder

Double click the ISP_TOOL4.0.9 icon, and then a dialog will show as below.

Click the Config button. And then a dialog will show as below.  You should set the Config like what the picture shows

After you have finished all above, you should click the Apply button to complete the configuration.

Turn on the TV, then we can update.
Double click the ISP_TOOL4.0.9 icon, and then a dialog will show as below.

Click the Read button. And then do as shown below.

Find the update file in your computer.

Double click the update file. A dialog will show as below.

Click the Auto button. And then do as shown below.

Click the Connect button. And then do as shown below.

Click the Run button

When the update is finished, a dialog will show as below

Problem solutions
1. Adjusting sharpness can improve picture definition.
2. Adjusting bright can improve picture administrative levels; it can display black background something.
3. If VGA or YPBPR color isn’t natural. You can optimize VGA.
4. PDP power is very large system. As you power off power. Power component must discharge period of time. Power can work steadily. If you power off and power on TV continuously. Then power work unsteadily. Then PDP TV will display deviant picture.
5. TV, AV and S.video are the same white balance setting. VGA is a set white balance setting. HDTV is a set white balance setting.
6. Picture mode does be divided four modes. Such as standard, brightness, soft and custom. If you adjust factory data, they will increase the same data.

7. If TV doesn’t work normally, it will take place follow some phenomena.

8. If the picture color is not correct in the scart1 RGB source, but the scart1 CVBS is normal .you can check the fast blank signal is whether high. If it is low, please check the circuit.

9.If the picture is not normal 16:9 mode or 4:3 mode when the signal equipment send 16:9 mode or 4:3 mode, please check the aspect mode whether is in “normal” mode.

Sharp MX2000 – Sharp MX2700 Copier - How to upgrade the software – error list

DIGITAL FULL COLOR MULTIFUNCTIONAL SYSTEM – Sharp MX- 2300/2700 G - MX-2300/2700 N 

Firmware upgrade procedure

Purpose : Version-up

Function (Purpose) : Used to execute the firmware update.

Section : —

Item : Adjustment

Operation/Procedure

NOTE: To update the firmware, set DIP SW 2 on the MFP control PWB to ON.

1) Insert the USB memory into the machine.

* When USB is not connected, "INSERT A STORAGE FIRMWARE STORED ON" is displayed. When [OK] button is pressed, the display is shifted to the folder or file selection screen.

2) When a firmware update folder or file button is pressed, the display is shifted to the firmware update screen.

* The number of buttons depends on the number of files in the inserted USB memory.

A folder name or file name is displayed on the button.

If the folder name or file name is of more than 34 characters, only 34 characters are displayed.

For a folder name, "<DIR>" is displayed at the head.

* When [ .. ] button is pressed on the file selection screen, the display is shifted to the folder or file selection screen. On the folder or file selection screen, the keys are disabled.

* The path of the folder or file is displayed on the title section.

If the path is of more than 50 characters, only 50 characters are displayed.

3) The current version and the update version are displayed for each firmware.

4) When a button of the firmware to be updated is selected, it is highlighted.

* When the selected button is pressed again, its selection is canceled (normal display).

* When [ALL] button is pressed, all the buttons are selected and highlighted.

* If there is a page over [^], an active display is shown and the page moves up. If there is no page upward, the display grays out and the operation is invalid.

When there is a page under [v], the display becomes active and the page is shifted down. When there is no page under [v], the display grays out and the operation is invalid.

5) Press [EXECUTE] button.  [EXECUTE] button is highlighted, and [YES] and [NO] buttons are changed from gray-out display to active display.

* If no firmware button is selected, [EXECUTE] button is disabled.

6) Press [YES] button.

[YES] button is highlighted, and update of the selected firmware is executed.

* When [NO] and [EXECUTE] button are pressed, the display returns to the firmware select screen. At that time, the selected firmware remains highlighted, and [EXECUTE] button returns to the normal display.

7) After completion of update, the result is displayed.

When the operation is completed normally, "COMPLET" is displayed. In case of an error, "ERROR" and the firmware where the error occurred are displayed.

* The operation cannot be interrupted midway.

* When [OK] button is pressed, the machine is rebooted.

* When [CA] key is pressed on the folder or file selection screen or the file selection screen, the simulation is terminated.

* When [SYSTEM SETTINGS] key is pressed on the folder or file selection screen or the file selection screen, the display returns to the sub code entry screen.

* When [CA] key or [SYSTEM SETTINGS] key is pressed to exit the simulation on the file version display screen and the following screens before execution, the machine is rebooted.

Error code list and Update target data

Click on the charts to magnify