Service manual

PV152 2-14 PROJO
SUB BRIGHTNESS ADJUSTMENT
Adjustment preparation
1. Start adjustment 20 minutes or more after the power
is turned ON. Receive the color bar signal.
2. Set the contrast and color controls to minimum.
Adjustment procedure
1. Go to “Sub Brightness” adjustement in VIDEO CHROMA
ADJUST mode (press Source and Power button on
Control panel at the same time), using 56 buttons
and then 4 button.
2. Then adjust “Sub Brightness” using 34 buttons to
increase or decrease the value, according to figure.
(Visually adjust).
3. After adjustment, press MENU button to exit VIDEO
CHROMA ADJUST mode. (Data is stored in memory).
NOTE: When selecting SUB-BRIGHTNESS mode, the
microprocessor sets the CONTRAST and COLOR to MIN.
automatically, but make sure that the other conditions
are center. Directly observe the screen by eye without
using a mirror.
Fade to black
18 HORIZONTAL POSITION (FINE)
Adjustment Preparation:
1. Video Control: Brightness 90%, Contrast Max.
Adjustment Procedure
PROGRESSIVE MODE:
1. Receive any NTSC crosshatch signal.
2. Screen Format is PROGRESSIVE
3. Enter the I
2
C Bus alignment menu and select Item [12]
HPOSI
4. Adjust the data so that the Left and Right hand side
are equal.
5. Press the “MENU” button to exit from the Service
Menu.
CONVERGENCE ADJUSTMENT PROCEDURE
HD Mode Adjustment:
1. Receive any 2.14H 33.75kHZ signal.
2. Display Format is HD mode.
3. Enter the I
2
C Bus alignment menu and select Item [12]
HPOSI
4. Adjust the data using the left and right cursor keys
and balance the Left and Right hand side.
5. Press the “MENU” button to exit from the Service
Menu.
DIGITAL CONVERGENCE ADJUSTMENT
Adjustment preparation
1. Receive an RF or video signal.
2. Set controls to factory preset.
3. Install jig screen on the set.
4. Note the center of the video pattern displayed. This
is necessary to match dotted lines (adjustment point
viewed) and actual point that is adjusted and
displayed by the video signal.
5. Press the service only switch (on POWER/DEFLECTION
PWB). The pattern displayed is now the digital
convergence mode.
6. When performing a complete digital convergence
adjustment CLEAR DATA in RAM. See 2.6 (1)-(7).
7. To clear data turn TV set off. Press and hold the
service switch and then press POWER on.
ADJUSTMENT POINT
NOTE: If only minor adjustments to convergence are
needed, the jig screen is not necessary. Use digital
data stored in memory and one color as a
reference(red,green or blue). DO NOT CLEAR DATA
and WRITE to ROM memory.