Adjustments - JVC PD-42WV74 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 MEASURING INSTRUMENT AND FIXTURES
• DC voltmeter (or Digital voltmeter)
• Oscilloscope
• Signal generator (Pattern generator)
• Remote control unit
4.3 MAIN PARTS LOCATIONS (RECEIVER UNIT)
RECEIVER PWB
FRONT CONTROL PWB
SECTION 4
ADJUSTMENTS
DIST HOLDER
DIST RELAY PWB
(7) Preparation for adjustment. Unless otherwise specified in
the adjustment items, preset the following functions with
the REMOTE CONTROL UNIT.
Setting item
VIDEO STATUS
BRIGHT / CONTRAST / COLOR / TINT Center
COLOR TEMPERATURE
DIG. NOISE CLEAR
COLOR MANEGMENT
NATURAL CINEMA
DIGITAL VNR
TREBLE / BASS / BALANCE
BBE
AHS
AHB
MI-COM & DIST MODULE PWB
RECEIVER POWER PWB
MAIN PWB
BOTTOM CASE
DIGITAL INPUT MODULE
Settings
STANDARD
LOW
OFF
STD
OFF
OFF
Center
OFF
OFF
OFF
(No.YA029)1-21