Service manual

PV152 2-10 PROJO
3. Set video conditions to factory reset.
4. The lens focus adjustment should have been com-
pleted, screen format should be progressive.
5. The electric focus should have been coarse adjusted.
6. The digital convergence RAM should be cleared
(uncorrected state). With the TV set off, press and
hold the service switch located on the Power/
Deflection PWB and then press the power button.
7. Start adjustment 20 minutes or more after TV is
turned on.
Adjustment procedure
1. Apply covers to the R and B lenses and project only
green light or short 2P plug on R & B.
2. Turn the G deflection yoke and adjust the vertical
raster inclination.
3. Then, remove the cover of R or B lens and project red
or blue light together on the screen.
4. Turn the deflection yoke of R or B and set so that the
inclination of R or B with respect to the green light is
as shown below on the top and bottom sides.
5. After raster inclination adjustment, fixing screw of DY
should be screwed with 12+2kg-cm torque.
Green Red or
Blue
E 1
E 2
E 1
Crosshatch (Green)
E1 2mm
<+
Notes:
1. If internal cross-hatch does not appear after clearing
RAM data, press service switch again, on POWER/
DEFLECTION PWB.
2. To restore old RAM data, turn TV off and on.
BEAM ALIGNMENT
Adjustment preparation
1. Adjust at least 30 minutes after turning on power
switch.
2. Raster inclination, centering, horizontal and vertical
amplitudes, and optical focus adjustment should be
completed.
3. Set video conditions, Brightness to 90% and Contrast
MAX.
4. Receive cross-hatch signals. (Use of internal cross-
hatch signals allowed.) Raster Tilt should be finished.
5. Screen format should be Progressive.
Adjustment procedure
1. Green (G) tube beam alignment adjustment. Short-
circuit 2P subminiature connector plug pins of Red
(R) and Blue (B) on the CPT boards and project only
Green (G) tube.
2. Put Green (G) tube beam alignment magnet to the
cancel state as shown below.
3. Turn the Green (G) static focus (Focus Pack) counter-
clockwise all the way and make sure of position of
cross-hatch center on screen. (Halo state.)
4. Turn the Green (G) static focus (Focus Pack) clockwise
all the way. (Blooming state.)
5. Turn two magnets forming alignment magnet in any
desired direction and move cross-hatch center to
position found in (3).
6. If image position does not shift when Green (G) static
focus (Focus Pack) is turned. Green (G) beam align-
ment has been completed.
7. If image position shifts when Green (G) static focus
(Focus Pack) is turned, repeat (2)-(6).
8. Conduct beam alignment for Red (R) focus: Focus
Pack UFPK, Blue (B) focus: Focus Pack UFPK.
9. Upon completion of adjustment, fix beam alignment
magnets with white paint.
VERT & HORIZ PICTURE POSITION ADJUSTMENT
Adjustment preparation
1. Select signal on main picture.
2. Video settings have to be at normal condition.
Adjustment procedure
1. Press the SOURCE and POWER button on Control Panel
at same time to access VIDEO CHROMA ADJUST mode.
2. Select H POSI and V POSI using 56 buttons.
3. Adjust the H POSI (HORIZONTAL) and VPOSI (VERTI-
CAL) position using 34 buttons.
CONVERGENCE ADJUSTMENT