TCL 29F5 – BT2909S – BT29M63 – 29185 – 21M63US - FST TV- HOW TO ENTER SERVICE MODE [P-Mode] - W/B ADJUSTMENT - SMPS & Horizontal Output Circuits [Schematics]

SERVICE MODE [FACTORY MODE]
There are 2 ways to enter service mode [Factory Mode] to this model]

 Method one

• Switch on the TV set.
• Press the “MENU” key on RC to show the “PICTURE” OSD menu.
• Move the cursor to “Contrast” item then press the “9”, “7”, “3”, “5” key continuously on RC within 3 seconds then enter P-Mode. The “P” letter will appear on the left low corner of the screen when enter P-Mode. Also the “FACTORYHOTKEY” will be set to “ON ( = 1 )”.

Method two

• Press the “RECALL” key on RC to enter P-mode directly.

Notes:

• This will be active only when the “FACTORYHOTKEY” had set to” ON ( = 1 )”.
• When the power on with “FACTORYHOTKEY” had set to “ON ( =1 )”, the set will enter the P-Mode automatically.

TO EXIT SERVICE MODE: Press the “RECALL” or “MENU” key on RC to exit the P-Mode.

 KEY FUNCTIONS ON REMOTE AT SERVICE MODE

Use the RC to navigate in P-Mode:

• Press “0” to“9” key to select factory adjustment page.
• Press“▲▼” key to select option.
• Press“►◄” key to adjust or select option.
• Press“DISPLAY” key to display software version.
• Press “MENU”key to exit the P-Mode.
• Press “RECALL”key to enter or exit the P-Mode.
• All change in P-Mode will be saved in EEPROM automatically.

ADJUSTMENT PAGE LIST

+B VOLTAGES ADJUSTMENT

• All relevant connectors and modules must be connected and inserted.
• Main voltages at 220VAC, 50Hz. [voltage range: 110VAC~240VAC, 50Hz]
• Connect a voltmeter to B+ (Cathode ofD808) and switch on the set.
• Input Philips test pattern signal and standard mode.
• Adjust VR801, it should as the value in below form B+ Voltage.

CRT TYPES AND +B VOLTAGE SETTINGS

A68ERF185X013/MS (44-29RFLT-HFCA) => 125V+/-0.5V

A51QGT420X34(44-21RFLS-LGDA) => 108V+/-0.5V

WHITE BALANCE ADJUSTMENT

• Input a black and white pattern to RF input.
• Enter P-Mode, press key “3 ” to select white balance adjustment menu.
• Use the colour analyser to measure the black side of the screen. Adjustthe value of  “RC”,”GC” and “BC” to set the reading of the colour analyser to x=274, y=280. (11500 K).
• Then measure the white side of the screen. Adjust the value of “RD”, “GD” and “BD” to set the reading of the color analyzer to x=274, y=280. (11500 K).
• Repeat step 3&4 until you can get the correct reading for both black and white sides.

Notes:

A. The “SUBB” and “SubCON” items are used to assistant the white balance adjustment.  It is the same function as the user OSD menu “Brightness” and” Contrast” items. You can adjust these items to get the expect intensity when adjusting the white balance. 

B. YUV white balance black level offset setup:

It is not need to adjust the white balance for YUV mode when production, but the BLOR-Y, BLOG-Yand BLOB-Yitems which locate in EEPROM address 0x0A, 0x0B and 0x0Cneed to write in the right values to set the YUV mode black level offset before production. The PE engineer when making the EEPROM copy for the new lot with difference tube should write these offset values.

WHITE BALANCE ADJUSTMENT OSD

SMPS SCHEMATICS {Click on Pictures to Zoom In}

HORIZONTAL OUTPUT SCHEMATIC