Adjustment - JVC LT-40FH76 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
warning 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
VIDEO STATUS
BRIGHT / CONTRAST / COLOR / TINT
COLOR TEMPERATURE
DIG. NOISE CLEAR
COLOR MANAGEMENT
NATURAL CINEMA
TREBLE / BASS / BALANCE
SMART SOUND
MTS
BBE
A.H.S
A.H.B
ASPECT
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator) [NTSC]
• TV audio multiplex signal generator
• Remote control unit
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• WHITE BALANCE (HIGHLIGHT) adjustment
MTS CIRCUIT
• MTS INPUT LEVEL adjustment
• MTS SEPARATION adjustment
1-16 (No.YA380)
SECTION 4

ADJUSTMENT

4.5
4.5.1 HOW TO ENTER THE SERVICE MODE
NOTE:
Settings
STANDARD
00
LOW
OFF
ON
OFF
00
4.5.2 HOW TO EXIT THE SERVICE MODE
OFF Press the [ BACK ] key to exit the Service mode.
STEREO
4.5.3 SERVICE MODE SELECT KEY LOCATION
OFF
OFF
OFF
FULL
BASIC OPERATION OF SERVICE MODE
(1) Set to 0 minutes using the [SLEEP TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key
simultaneously, then enter the SERVICE MODE (Fig.1)
SERVICE MENU SCREEN
SERVICE MENU SERVICE MENU
1. ADJUST 1. ADJUST
2. SELF CHECK 2. SELF CHECK
3. I2C STOP 3. I2C STOP
Fig.1
• 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.
TV/CATV
switch
DISPLAY
SLEEP
TIMER
VIDEO
STATUS
MUTING
VOLUME -
MENU
RM-C1257G
VCR/DVD
switch
POWER
NUMBER
CHANNEL +
VOLUME +
BACK
CHANNEL -