Adjustment - JVC LT-26A80SU 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
PICTURE adjustments
COLOUR TEMP.
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator)[PAL]
• Remote control unit
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• COLOUR DECODER adjustment
• WHITE BALANCE (HIGH LIGHT) adjustment
4.5 BASIC OPERATION OF SERVICE MODE
4.5.1 HOW TO ENTER THE SERVICE MODE
(1) Press [INFORMATION] key and [MUTING] key on the
remote control unit simultaneously to enter the SERVICE
MODE SCREEN. (Fig.1)
SERVICE MODE SCREEN
SERVICE MENU SERVICE MENU
1.ADJUST 1.ADJUST
2.SELF_CHECK 2.SELF_CHECK
3.I2C STOP 3.I2C STOP
NOTE:
Before entering the SERVICE MODE, confirm that the setting
of VCR/TV/DVD switch is at the "TV" side. If the switches have
not been properly set, you cannot enter the SERVICE MODE."
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
1-18 (No.YA509)
ADJUSTMENT
Settings position
STANDARD
Centre
NORMAL
Fig.4-1
SECTION 4
4.5.3 CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING ITEM
• [FUNCTION
For scrolling up / down the setting items.
CHANGE OF SETTING VALUE (DATA)
• [FUNCTION
For scrolling up / down the setting values.
MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [OK] key.
4.5.4 SERVICE MODE SELECT KEY LOCATION
[A80 series] : RM-C1821
INFORMATION
[DA8/DT8 series] : RM-C1508
INFORMATION
/ ] key.
/ ] key.
MUTING
OK
FUNCTION
/
FUNCTION
MUTING
VCR/TV/DVD
switch
FUNCTION
/ OK
FUNCTION
/
/