Adjustment - JVC LT-19D200 Service Manual

4.1 GENERAL NOTE: "PWB" IS ABBREVIATION FOR
"CIRCUIT BOARD ASSEMBLY."
NOTE:
Electrical adjustments are required after replacing circuit com-
ponents and certain mechanical parts. It is important to per-
form these adjustments only after all repairs and replacements
have been completed. Also, do not attempt these adjustments
unless the proper equipment is available.
4.2 TEST EQUIPMENT REQUIRED
(1) NTSC Pattern Generator (Color Bar W/White Window, Red
Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst)
(2) Remote control unit
(3) Color Analyzer
4.3 HOW TO MAKE THE SERVICE REMOTE CONTROL
UNIT:
Cut "A" portion of the attached remote control unit as shown in
Fig. 1.
service button
(There is a button under the plastic housing.)
A
4.4 HOW TO SET UP THE SERVICE MODE:
Service mode:
(1) Use the service remote control unit.
(2) Turn the power on.
(3) Press the service button on the service remote control
unit. The following screen appears.
" * " differs depending on the models.
Code :
***********-***
Pic code :
**-***-**-*****-***
MIPS : Push 0key
Tuner :
****-*****-****
safety_Non
Safety :
1-14 (No.YA711<Rev.002>)
SECTION 4

ADJUSTMENT

4.5 PURITY CHECK MODE
This mode cycles through full-screen displays of red, green, blue,
and white to check for non-active pixels.
(1) Enter the Service mode.
(2) Each time pressing [7] button on the service remote control
unit, the display changes as follows.
Fig. 1
Note:
When entering this mode, the default setting is White mode.
Purity Check Mode
White mode
[7] button
[7] button
Black mode
[7] button
Red mode
[7] button
Green mode
[7] button
Blue mode
[7] button
White 20% mode