SHARP LCD TV LC32GD7E SERVICE MODE AND POWER SUPPLY CIRCUIT

SHARP LCD TV LC32GD7E SERVICE MODE AND POWER SUPPLY CIRCUIT

SERVICE MODE ERROR CODE AND POWER SUPPLY CIRCUIT 

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 UP “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.

Display adjustment procedure
1. Adjustment 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.

2. Adjustment process mode key operation table

Key	Function 1 (when on the left side of a page)	Function 2 (when changing a numeric value)
Cursor UP	Moving up by one item or moving to the previous page (when at the top)	Incrementing the adjustment value by one or executing the item (in the case of W or R item)
Cursor DOWN	Moving down by one item or moving to the next page (when at the bottom)	Decrementing the adjustment value by one or executing the item (in the case of W or R item)
Cursor RIGHT	Moving to the right by one item or moving to another page (in the case of the initial page)	Moving to the right by one item
Cursor LEFT	Moving to the left by one item or moving to another page (in the case of the initial page)	Moving to the left by one item
OK	Test pattern off	Executing the item (in the case of W or R item)
INPUT mark of the R/C (caution required)	Moving to the next page	Moving to the next page
CH (UP)	Moving up by one item or moving to the previous page (when at the top)	Incrementing the adjustment value by one orexecuting the item (in the case of W or R item)
CH (DOWN)	Moving down by one item or moving to the next page (when at the bottom)	Decrementing the adjustment value by one or executing the item (in the case of W or R item)
VOL (+)	Moving to the right by one item or moving to another page (in the case of the initial page)	Moving to the right by one item
VOL (–)	Moving to the left by one item or moving to another page (in the case of the initial page)	Moving to the left by one item

COM BIAS adjustment
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.

Lamp error detection
Feature description
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"  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".

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After resetting to "0", perform an operational check to ensure that the lamp error detection feature is not activated.

Software loading
 Update of the main software (operating software)
To update the software you need the Programmer (Article number 87933.050) and the update program Flasher

Please act according the following procedure:
- Switch off the TV set with the mains switch.
- Connect the Programmer with the L-Link cable to the service socket at the TV.
- Start the Flasher software and select Step 2

- Switch on the TV set with the mains switch now (TV does not switch on under this condition)

- Software automatically jumps to Step 3
- Now select  Auto program  and select the new software version.

-With selecting Open the update process will start automatically

- With the message Flash programmed the update is finished.

- Switch off the TV with the mains switch and disconnect the L-Link cable.

LED Flash Timing Chart in Case of Errors

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POWER SUPPLY CIRCUIT 

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