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.
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.