SHARP LC-32A33M - LCD TV - ADJUSTMENTS - HOW TO ENTER THE SERVICE MODE - PUBLIC MODE

LC-32A33M - Sharp LCD TV - Adjustments - How to enter the Service Mode - Public Mode

ADJUSTMENT PROCEDURE

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

Before adjustment, perform aging for approx. 60 minutes to stabilize the unit.

Entering the adjustment process mode

There are 3 ways as follows

• After power-on, press "ADJUSTMENT PROCESS" key of the remote control.

• With the KEY 4 (pin E1 of IC801) set to "L", turn the power ON.

• During servicing

While holding down the TV/VIDEO and Volume DOWN keys at the same time, set the Power switch to ON. (“K” stands for inspection process mode is displayed in the upper left portion of the screen.) => Press the Channel DOWN and Volume DOWN keys at the same time. (The adjustment process mode screen appears.)

To cancel it, turn off the power using the Power switch or remote control.

Key operation in the adjustment process mode

Basic operations

• Tune in to a station using the Channel UP/DOWN keys.

• Switch the input using the TV/VIDEO key.

• Select an item to adjust using the Cursor Up/Dn keys. (Pressing the Cursor key while at the bottom item moves to the top item on the next page, and pressing the Cursor UP key while at the top item moves to the bottom item on the previous page.)

• Adjust the item selected using the Volume +/– or Cursor Up/Dn keys.

• Press the Menu key to move to the next item. (Pressing the Menu key while at the bottom item moves to the top item on the next page.)

• Press the Manual Memory key to return to the top item. (Pressing the Manual Memory key while at the top item moves to the top item on the previous page.)

Press the Auto Preset key to move to the top item on the next page.

Layer movement
• Pressing the ENTER key while at an item other than I2C DATA and HOTEL POWERFIX on page 2 moves to the setting page of that item name.
• Press the Flashback key to exit each setting page.
 Adjustment procedure for RGTAR, GGTAR and BGTAR items on pages 3, 4, and 5 of the DVP layer
• At RGTAR, GGTAR, and BGTAR on pages 3, 4, and 5; pressing the Volume UP/DOWN or the Cursor Left/Right  keys moves left or right.
Select an item to adjust, and press the Direct Channel "12" key.

As the Cursor moves to the corresponding right field, make adjustments using the Volume UP/DOWN or the Cursor / keys. Pressing the Direct Channel "12" key at the right field moves back. Pressing the Cursor Up/Dn keys, the Menu key, etc. moves to a different item.

Initialization

Pull down the pin E1 & F3 of IC2001 to GND, then turn on the power.

Check MODEL (A654MA).

Inch Size Setting
1. Enter Adjustment process Mode
2. Press volume down and channel up simultaneously. This will bring cursor 'Right ' to 'INCH SIZE'.
3. To set inch size '32', press '1' on remote control. This will change 'INCH SIZE' to purple color for 25sec.
4. Cursor 'Right ' then will go up to 'MODEL'. If yellow highlight is still remain at 'INCH SIZE', process inch size setting is NG. Check the hardware inch size selection.

When replacing the LCD control PCB, follow these steps to adjust VCOM.

Adjusting LCD Panel
1. Enter the adjustment process mode.

2. Select the item [VCOM ADJ] using the Cursor (Up/Dn / Right/Left ) or CH (Up/Dn ) keys on the remote controller.
3. Press the OK key to check that the adjustment pattern is displayed.

4. Adjust the flicker in the middle of the screen to minimum using the Cursor (L/R ) or CH (U/D ) or VOL (+)/(-) keys on the remote controller.
5. Press the OK key to turn off the pattern.
6. To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)
CAUTION: Use due care in handling the information described here; at least users should know how to enter the adjustment process mode. If the settings are tampered in this mode, unrecoverable system damage may result.

Factory setting

Performing the factory setting using the remote control for adjustment

1. Perform the factory setting using the remote control for adjustment. (This setting must be done after the MCL data setting.)

2. “M” stands for factory setting 2, “X” stands for factory setting 4 is displayed in the upper left portion of the screen by continuing to press the ‘Factory Setting’ key on the remote control for adjustment.

3. When “SETTING COMPLETE” is displayed in the middle of the screen after a few seconds, setting is completed.

4. Turn off the power.

NOTE: Set the Power switch to “OFF” immediately after completing the factory setting.

CAUTION: Do not plug on again after shipment setting is done. If do, please re-do the shipment setting. Do not power off with remote control.

How to start Public Mode

There are the following two ways to get the public mode setup screen displayed.

1) Press the “INPUT” and “VOL (+)” keys on the set at once and turn on the power.

2) Get the password input screen displayed.

Procedure
• The input starts with the leftmost digit.
• Use the numeric keys [1] thru [9] and [10/0] keys on the remote controller. [The other keys are not acceptable.]
• With a numeric-key input, “–” will change to “* “. The input position will move one digit to the right.
• With all the 3 digits entered, the password will be verified.

3) The 3-digit password is now verified.

The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever adjustment process settings.)

With any other passwords, the screen changes to the normal mode.

In the adjustment process mode, turn on “PUBLIC MODE”. Also press the “CH (U )” and “VOL (+)” keys on the set at once and turn on the power.

How to exit Public Mode

There are the following ways to quit the public mode setup screen.

• Turn off “PUBLIC MODE” in the adjustment process mode. (*) <= This way alone is not for quitting the setup screen, but for quitting the mode itself.

• Turn off the power with the “POWER” key. (*)

• Select “ENTER”. (*)

• Move the cursor to “RESET” and press the “FLASHBACK” key. (Back to the normal mode screen) (*)

*  “PUBLIC MODE” stays on in the adjustment process mode.

*   The settings will be back to the factory ones.

Public Mode Setting Values
• With the factory settings made, the public mode settings get initialized. (The adjustment process remains intact.)

Public Mode Menu
The guidance is not displayed onscreen.
Setup procedure
• To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH Up/Dn key (remote controller and set).
• To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).
• To save new settings, keep the cursor at “Enter” and use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set). AD converter level adjustment 1080i input 1080i 75% colour bar signal input Used device name: LEADER LT448 Signal name: COLOUR BAR * Use the LT-446-compatible third one of three color bars. Setting value: 02: 1080i/59.94 (30 sF) H: 33.72 kHz, V: 29.97 Hz. Set AUTO GAIN-OFFSET on page 3 (M2-HD) of the adjustment process DVP hierarchy to ON. 480i input 480i 75% colour bar signal input Used device name: LEADER LT448 Signal name: COLOUR BAR * Use the LT-446-compatible third one of three color bars. Setting value: 15: 480i/60 H: 15.73 kHz, V: 29.97 Hz Set AUTO GAIN-OFFSET on page 4 (M2-SD) of the adjustment process DVP hierarchy to ON.

PC XGA input

XGA 75% colour bar signal input (RGB)
Used device name: LEADER LT448
Signal name: COLOUR BAR “SATURATION 75%”
* Use one of two color bars where SATURATION can be changed.
Setting value: 28: XGA
H: 48.36 kHz, V: 60.00 Hz
Be sure to set the SYNC setting to OFF.

Set AUTO GAIN-OFFSET on page 5 (M2-PC) of the adjustment process DVP hierarchy to ON.

If all the items are set to ON, “RUN” is displayed during adjustment.

TAMP adjustment

Receive the PAL standard colour bar signal.

If the maximum value of “PAL TAMP1” on page 1 of adjustment process DVP hierarchy is not in the range of values in the list below, adjust “PAL TAMP1” on the same page so that the maximum value of “Y” is in the range of values in the list below.
* Note that the setting value may vary by model.
When pressing the TAMP1 direct keys, adjustment of “PAL TAMP1” is complete.
Then, The values of “NTSC TAMP1” and “SECAM TAMP1” are automatically set.
(NTSC: Value of PAL –7, SECAM: The same value as PAL)

MCL setting procedure

“MCL” is displayed in the upper left portion of the screen as shown in the figure below by sending the MCL key of the remote control for adjustment.

When the screen disappears after a few seconds and appears again, MCL setting is completed.