Sunday, October 05, 2014

HOW TO ENTER SERVICE MODE - JVC LT-20J50SJ, LT-20J50SU - LCD PANEL TELEVISION

Universal Remote Control Set-up Codes for JVC brand TVs [With different brand remote controls]
0007 0018 0075 0103 0123 0154 0163 0170 0182 0214 0225 0409 0433 0465 0657 0670.
TO ENTER THE UOCIII SERVICE MODE
1.  Press [MENU] key.
2.  Press the [4], [7], [2] and [5] key, and UOCIII SERVICE MODE screen will be displayed.
HOW TO EXIT THE UOCIII SERVICE MODE
Press [MENU] key to exit the UOCIII SERVICE MODE.
CHANGE AND MEMORY  SETTING VALUE
SELECTION OF SETTING MENU & ITEM_ ([P +/-]key.)
CHANGE OF SETTING VALUE (DATA)_ ([Volume +/-]key.)
MEMORY OF SETTING VALUE (DATA)
The setting value will be stored automatically when release the REMOTE CONTROL UNIT keys.
SELECTION OF SETTING MENU & ITEM _  [FUNCTION ▲  /▼  ] and [FUNCTION ◄ / ► key.
CHANGE OF SETTING VALUE (DATA) _  [FUNCTION ◄/► KEY]
HOW TO ENTER THE PW SERVICE MODE
Press [INFORMATION]key and  [MUTING]key simultaneously, and PW SERVICE MODE screen will be displayed.
HOW TO EXIT THE PW SERVICE MODE
Press [MENU] key to exit the PW SERVICE MODE.
CHANGE AND MEMORY SETTING VALUE
MEMORY OF SETTING VALUE (DATA)
{In case of Service Sub-menu 1 and Service Sub-menu 2}
The setting value will be stored automatically when release the REMOTE CONTROL UNIT keys.
{In case of Factory Settings 1 and Factory Settings 2}
1. Press [MENU] key.
2.  Press the [4], [7], [2]and [9]key to store the setting value.
3.  After storing the setting value, the message "Factory Settings OK" will be displayed.
PW SERVICE MODE SETTING ITEMS
LCD PANEL
  This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the conventional CRT (Cathode Ray Tube), as a display unit. Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light does not pass through the polarizing filter and the screen isblack when no voltage is applied to the liquid crystals.
PIXEL FAULT
  There are three pixel faults - bright fault , dark fault and flicker fault - that are respectively defined as follows.
BRIGHT FAULT
  In this pixel fault, a cell that should not light originally is lighting on and off.  For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
DARK FAULT
  In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.  For checking this pixel fault, input 100% of each R/G/B color and find out the cell that is not lighting.
FLICKER FAULT
  In the pixel fault, a cell that should light originally or not light originally is flashing on and off.  For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB color and find out the cell that is flashing on and off.