Adjustment - JVC LT-26DB1BU/AX Service Manual

4.1 ADJUSTMENT PREPARATION
(1) This TV is adjusted by using REMOTE CONTROL UNIT.
(2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values
which adjust the screen to the optimum condition can be different from the initial setting values.
(3) Make sure that connection is correctly made AC to AC power source.
(4) Turn on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments.
(5) If the receive or input signal is not specified, use the most appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service

adjustment.

4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
Setting item
Picture Mode
Colour Temperature
4.5 BASIC OPERATION OF FACTORY MODE
4.5.1 HOW TO ENTER THE FACTORY MODE
(1) Press [INFORMATION] key and [MUTING] key on the
remote control unit simultaneously to enter the FACTORY
MODE SCREEN. (Fig.4-1)
4.5.2 HOW TO EXIT THE FACTORY MODE
Press the [OK] key to exit the factory mode.
FACTORY MODE SCREEN
Factory Menu
ADC Calibration
White Balance
Miscellaneous
Engineering Menu
Panel Select xxxxxxxxxxx
Factry Default
Model Name : xxxxxx
Software Version : xxxxxx
OTA Loader Version : xxxxxx
MCU Version : xxxxxx
System Version : xxxxxx
Kernel Version : xxxxxx
Boot Loader Version : xxxxxx
Update Date : xxxxxx
4.5.3 CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING ITEM
• [FUNCTION / ] key.
For scrolling up / down the setting items.
• [FUNCTION / ] key.
For select the setting items.
CHANGE OF SETTING VALUE (DATA)
• [FUNCTION / ] key.
For scrolling up / down the setting values.
MEMORY OF SETTING VALUE (DATA)
The setting value will be stored automatically when release the
REMOTE CONTROL UNIT keys.
ADJUSTMENT
Settings position
Standard
Normal
Fig.4-1
SECTION 4
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator)[PAL]
• Remote control unit
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• WHITE BALANCE adjustment
4.5.4 FACTORY MODE SELECT KEY LOCATION
[Function / ] key
Scrolling up / down the
setting value.
[MUTING] key +
[INFORMATION] key
Enter The Factry Mode.
4.6 SETTING ITEM IN THE FACTORY MODE
[FUNCTION / ] key
Select the setting item.
(No.YA698<Rev.001>)1-13