Table of Contents
Advertisement
6. Select Item H POSI and adjust the data so that
the center of Video matches the location of the
Digital Crosshatch pattern noted in step {4}.
2
7. Exit from the I
C Menu.
1080I HD MODE ADJUSTMENT:
1. Receive any 1080i (2.14H) signal and select that
input.
2. Press the SERVICE ONLY switch on the deflection
PWB and display the Digital Convergence Cross-
hatch pattern.
3. Mark the center of the Digital Convergence Cross-
hatch Pattern with finger and press the SERVICE
ONLY switch to return to normal mode.
2
4. Enter the I
C Bus alignment menu (With Power Off,
press and hold the SOURCE button on the front
panel, then press the POWER button and Release
both buttons).
5. Select Item H POSI H
6. Adjust the data up or down slightly to match the
Video to the center location found in step (10).
2
7. Exit from the I
C Menu.
NOTE: To enter the I
2
C Bus alignment menu, with Power
Off, press the SOURCE button on the front panel
and hold it down, then press the POWER button
and release both buttons. I
will appear.
CHASSIS TILT (RASTER INCLINATION) ADJUSTMENT
ADJUSTMENT PREPARATION:
· The set can face any direction.
· Receive the Cross-Hatch Signal
· VIDEO CONTROLS: Factory Preset.
· SCREEN FORMAT: should be NORMAL mode.
· The lens focus should have been coarse adjusted.
· The electrical focus should have been coarse
adjusted.
· The Digital Convergence RAM should be cleared.
· Turn power off, press and hold the SERVICE ONLY
switch on the Convergence PWB, then press the
POWER button.
ADJUSTMENT PROCEDURE:
GREEN:
1. Apply covers to the RED and BLUE lenses or short
the 2P Sub Mini connector [PTS] on R&B CRT PWB
to produce only GREEN.
2. Turn the Green deflection yoke and adjust the TILT
until the green is level. [+/- 2mm tolerance]. See
diagram.
RED:
3. Remove cover or PTS short from RED CRT and align
RED with GREEN. [+/- 1mm tolerance when com-
pared to Green]
PV154 - 923-03506
SERVICE ADJUSTMENTS
2
C adjustment menu
3-18
BLUE:
4. Remove cover or PTS short from BLUE and cover
the RED CRT. Align BLUE with GREEN. [+/- 1mm
tolerance when compared to Green]
After Completion:
5. Tighten DY Yoke Screws to 12+/-2 kg-cm.
6. REMOVE ALL COVERS or SHORTS on the PTS con-
nectors.
7. Turn the Power Off.
CHASSIS BEAM ALIGNMENT ADJUSTMENT
PREPARATION FOR ADJUSTMENT:
· Pre Heat, Pre-optical focus, DCU Phase Data, H.
POSI Course and Raster Tilt adjustment should be
completed.
· Brightness: 90%
· Contrast Max.
· Receive cross hatch signals, or dot pattern
· RASTER TILT adjustment should be finished.
· SCREEN FORMAT should be NORMAL mode.
Adjustment procedure:
1. Green (G) tube beam alignment adjustment:
2. Short-circuit 2P subminiature connector plug PTS
of Red (R) and Blue (B) on the CRT boards and
project only Green (G).
3. Put Green (G) tube beam alignment magnet to the
cancel state as shown in Figure 1. (See Figure 1.)
4. Turn the Green (G) static focus VR counterclock-
wise all the way and make sure of position of cross
hatch center on screen.
5. Turn Green (G) static focus VR clockwise all the
way.
6. Turn two Beam alignment magnet in any desired
direction and move cross hatch center to posi-
tion found in step (3). (See Figure 2 below).
7. If image position does not shift when Green static
focus VR is turned, adjustment is complete.
8. If image position does move, repeat steps [2]
through [6].
9. Conduct beam alignment for Red and Blue in the
same way.
10. Red (R) focus on focus pack.
11. Blue (B) focus on focus pack.
12. Upon completion of adjustment, place a small
amount of white paint on the beam alignment
magnets, to assure they don't move.
CHASSIS RED/BLUE RASTER OFFSET ADJUSTMENT
Raster Offset is necessary to conserve Memory allocation.
It is very important to remember that the Red is offset
ZP26/28 - SERVICING
Advertisement
Table of Contents
