Adjustment - JVC LT-42WX70/APT Service Manual

4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the
REMOTE CONTROL UNIT and the other is the
conventional method using adjustment parts and
components.
(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
Smart Picture
Dynamic Backlight
Colour Temp.
Zoom
4.5.3 SERVICE MODE SELECT KEY LOCATION
[Function / ] key
Scrolling up / down the
setting value.
[FUNCTION / ] key
Select the setting item.
[MUTING] key +
[INFORMATION] key
Enter The Factry Mode.
SECTION 4

ADJUSTMENT

Settings position
Standard
Off
Off
Normal
Full
[Function / ] key
Scrolling up / down the
setting value.
[FUNCTION
Select the setting item.
[MUTING] key +
[INFORMATION
(DISPLAY)] key
Enter The Factry Mode.
[LT-42WX70EU/PP]
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator)
• Remote control unit
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• WHITE BALANCE (HIGH LIGHT) adjustment
4.5 BASIC OPERATION OF SERVICE MODE
4.5.1 HOW TO ENTER THE SERVICE MODE
(1) Press [INFORMATION(DISPLAY)] key and [MUTING]
key on the remote control unit simultaneously to enter the
SERVICE MODE.
Service Menu Service Menu
1. Adjust 1. Adjust
2. Self Check 2. Self Check
3. I2C Bus Stop 3. I2C Bus Stop
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
[Function / ] key
Scrolling up / down the
setting value.
/ ] key [FUNCTION
Select the setting item.
[MUTING] key +
[DISPLAY] key
Enter The Factry Mode.
[LT-42WX70/AUPT]
[LT-42WX70/BPT]
[LT-42WX70/GPT]
SERVICE MODE
/ ] key
[LT-42WX70/APT]
[LT-42WX70/TPT]
(No.YA700<Rev.001>)1-19