Adjustment - JVC PD-42V475 Service Manual

4.1 ADJUSTMENT PREPARATION
(1) You can make the necessary adjustments for this unit
with either the remote control unit or with the adjustment
equipment and parts as given below.
(2) Adjustment with the remote control unit is made on the
basis of the initial setting values, however, the new
setting values which set the screen to its optimum
condition may differ from the initial settings.
(3) Make sure that AC power is turned on correctly.
(4) Turn on the power for the set and test equipment before
use, and start the adjustment procedures after waiting at
least 30 minutes.
(5) Unless otherwise specified, prepare the most suitable
reception or input signal for adjustment.
(6) Never touch any adjustment parts, which are not specified
in the list for this variable resistors, transformers, trimmer
capacitors, etc.
(7) Presetting before adjustment.
Unless otherwise specified in the adjustment instructions,
preset the following functions with the remote control unit.
4.2 PRESETTING BEFORE ADJUSTMENT
Unless otherwise specified in the adjustment instructions,
preset the following functions with the remote control unit.
Setting item
VIDEO STATUS
PICTURE adjustments
COLOR TEMPERATURE
DIGI. NOISE CLEAR
COLOR MANAGEMENT
DYNAMIC GAMMA
SOUND adjustments
A.H.S
BBE
AHB
MTS
SMART SOUND [PD-42V485/S] OFF
AUDIO OUT
ASPECT
4.3 MEASURING INSTRUMENT AND FIXTURES
•
DC voltmeter (or Digital voltmeter)
•
Oscilloscope
•
Signal generator (Pattern generator)
[NTSC / 525i COMPONENT / 1125i / PC (VGA)]
•
Audio multiplex signal generator
•
Remote control unit
1-22 (No.YA099)
SECTION 4

ADJUSTMENT

Settings
STANDARD
All center (00)
LOW
OFF
ON
ON
All center (00)
OFF
ON
ON
STEREO
FIX
FULL
4.4 BASIC OPERATION OF THE SERVICE MENU
4.4.1 TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the remote control unit.
4.4.2 HOW TO ENTER THE SERVICE MENU
(1) Press the [SLEEP TIMER] key, and set it to 0 minutes.
(2) Press the [DISPLAY] key and the [VIDEO STATUS] key
simultaneously, and the SERVICE MENU screen of Fig.1
will be displayed.
4.4.3 SELECT THE SERVICE MENU ITEM
(1) When the Main Menu is displayed, press any key of the [1]
to [3] key to enter the corresponding menu mode.
CAUTION:
When a number key other than the [1] to [3] key 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.
4.4.4 SELECT THE SETTING ITEM AND SETTING VALUE
(1) Select the service item using the [CHANNEL +/– (
key.
(2) Set the value using the [VOLUME +/– (
(3) Press the [MUTING] key to memorize the set value.
SERVICE MENU SCREEN SERVICE MENU SCREEN
SERVICE MENU
1. ADJUST
2. SELF_CHECK
3. I2C STOP
ADJUST SCREEN ADJUST SCREEN
S001 PREPATE
NTSC3 FULL STD L
4.4.5 HOW TO EXIT THE SERVICE MENU MODE
Press the [MENU] key to exit the Service Menu mode.
/ )] key.
0
Fig.1
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