Adjustment - JVC LT-26X506/S 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
PICTURE adjustments
COLOUR TEMP.
SOUND adjustments
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator)[NTSC]
• Remote control unit
SECTION 4

ADJUSTMENT

Settings position
STANDARD
Centre
NORMAL
Centre
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) Set to 0 minutes using the [SLEEP TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key
simultaneosly, then enter the SERVICE MODE.
NOTE:
• As self check feature is not used in this TV, "2. SELF
CHECK" cannot be selected (screen display only).
• Before entering the SERVICE MODE, confirm that the
setting of TV/CATV switch of the REMOTE CONTROL UNIT
is at the "TV" side and the setting of VCR/DVD switch is at
the "VCR" side. If the switches have not been properly set,
you cannot enter the SERVICE MODE.
• When a number key other than the [1] keys is pressed in the
SERVICE MENU SCREEN, the other relevant screen may
be displayed.
This is not used in the adjustment procedure. Press the
[MENU] key to return to the SERVICE MENU SCREEN.
SERVICE MODE SCREEN
SERVICE MENU SERVICE MENU
1.ADJUST 1.ADJUST
2.SELF_CHECK 2.SELF_CHECK
3.I2C STOP 3.I2C STOP
ADJUSTMENT MODE SCREEN
S001 R DRIVE S001 R DRIVE
NT NT FULL FULL
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [BACK] key to exit the Service mode.
Not used
(Display only)
126 126
STD STD H H
(No.YA333)1-13