JVC LCD TV Service Mode

JVC LT-26DE9BJ - LT-26DE9BU - LCD TV - HOW TO ENTER SERVICE MODE [FACTORY MODE] - FACTORY SETTINGS - [Initial Settings] & Universal Remote Control Set-up Codes.

TO ENTER SERVICE MODE

• This TV can receive both DVB-T (Digital terrestrial broadcasting), DVB-S(Digital satellite broadcasting: DB9 only) and Analogue terrestrial broadcasting.
• This television has PVR (Personal Video Recorder) function that allows you to record a program in the installed hard disk drive.
• By connecting a HDMI compatible device, high definition pictures can be displayed on your TV in their digital form.

1. Press [INFORMATION]key and [MUTING]key on the remote control unit simultaneously to enter the FACTORY MODE SCREEN-1.
2. Press [►] key on the remote control unit simultaneously to enter the FACTORY MODE SCREEN-2
3. Press the [OK] key to exit the factory mode.

{CLICK ON PICTURES TO ZOOM IN}

SELECTION OF SETTING ITEM

• For scrolling up / down the setting items:   [FUNCTION ▲/▼ ] key.
• For select the setting items: [FUNCTION ◄/►] key.

CHANGE OF SETTING VALUE (DATA)

• For scrolling up / down the setting values:  [FUNCTION ◄/►] key.
• The setting value will be stored automatically when release the REMOTE CONTROL UNIT keys.

FACTORY MODE SETTINGS [INITIAL SETTINGS]

VIDEO CIRCUIT

UNIVERSAL REMOTE CONTROL SET-UP CODES

GE Universal remote control:  0060 0026 0197 0069 0247 0923 0012 0065 0067 0141

RCA RCR 311W: 1009, 1010, 1024, 1048, 1052, 1058, 1063, 1064, 1084, 1109, 1119, 1133, 1140, and 1189

RCA RCR 312W: 10053, 10650, 10731, 11253, 11601, and 11774

Others: 1129 1114 1470 1479 10751115 1417 1293 1047 1315 1046 1210 1046 1026 1129

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LCD LED TV HARD RESET METHOD BY IMRAN ASHRAF KHAN

T-CON AND PANEL LOGIC BOARDS VOLTAGES ADVANCED VOLTAGES DATA AND UNDERSTANDING BY IMRAN ASHRAF KHAN.

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TCL LCD LED Service Modes

SERVICE [FACTORY MODE]

• Enter the factory menu (can use the IR) and press the remote key [◄V-] to  “0’, press mute remote key, then press 9,7,3,5 remote key.
• Press [►] key to enter the sub-menu and press MENU key to return the main-menu.

ADJUSTMENTS

Adjust the temperature in CMP, VGA, AV.

Make sure the picture mode is set to “Stand”, the “Picture àBlack expand” on the user Menu is set to “OFF”. “Other àFlesh Tone & Adaptive Luma Control ” on 

the factory Menu is set to “OFF”. After Alignment, the entire item will change to “ON”

ADC ADJUST

• For CMP input, the test signal is 576i/50Hz,100%, 8 steps colour bar. Select the “Balance àRGB Calibrate” on the factory Menu, then press “à”, ADC adjust is finished after “OK” is displayed
• For VGA input, the test signal is 1024×768/60Hz white/black grid. Select the “Balance à RGB Calibrate” on the factory Menu, then press “à”, ADC adjust is finished after “OK” is displayed.

VGA ADJUST

• For VGA input, the test signal is 1024×768/60Hz 16 steps gray bar. Set the “Balance àTone” on factory menu to “Normal”:
• For the third step form the white bar, Adjust the value of White R,White G,White B, until the color temperature is x=280±5, y=290±5 Y > 220nit
• For the second step form the black bar, Adjust the value of GrayR, Gray G, Gray B, until the color temperature is x=280±5, y=290±5 Y < 25nit
• Repeat, until all is ok
• Adjust the value of Black level.

AV ADJUST

• For AV3 input, the test signal is PAL - 8 steps gray bar. Set the “Balance à Tone” on factory menu to “Normal”:
• For the third step form the white bar, Adjust the value of White R, White G, White B, until the color temperature is x=280±5 y=290±5 Y > 220nit
• For the second step form the black bar, Adjust the value of GrayR, Gray G, Gray B, until the color temperature is x=280±5 y=290±5 Y < 25nit R
• Repeat A&B, until all is ok
• Adjust the value of Black level.

CMP ADJUST

• For CMP input, the test signal is 576i/50Hz-16 steps gray bar. Set the “Balance à Tone” on factory menu to “Normal”:
• For the third step form the white bar, Adjust the value of White R, White G, White B, until the color temperature is x=280±5 y=290±5 Y > 220nit
• For the second step form the black bar, Adjust the value of GrayR, Gray G, Gray B, until the color temperature is x=280±5 y=290±5 Y < 25nit
• Repeat  until all is ok
• Adjust the value of Black level  

ANALOGUE BOARD SOFTWARE UPDATE By Imran Ashraf
Prepare MTKTOOL UPDATE, update board, serial line.

1. Connect PC, update board, and J3 on the main board with serial line
2. Provide the STB +5V for main board
3. Open “MtkTool.exe” in MTK TOOL program, and set the parameter as below picture.
4. Press “Browse” for selecting the SW.
5. Press “Upgrade” to download the SW. It will be OK when it shows “100%”
6. After downloading SW, it will be long time for Initializing EEPROM.

Procedure - 2
Preparative is same with above.

• Set SYSTEM > Factory Key on factory MENU to OFF. Connect the device as below picture.
• Update the SW follow solution- (3), (4), (5), (6)

MAIN POWER SUPPLY SCHEMATIC{Click on Pictures to Zoom In}

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