WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRE-
CAUTION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.
PICTURE TUBE COMPONENTS ADJUSTMENT
ADJUSTING PROCEDURE IN REPLACING CRTRGB FOCUS ADJUSTMENT
1. Call-up the adjustment mode (see page 10)
CutoffUser convergence center check
2. Press a button on the remote controller in order to display
Lens focusCentering (PAL)the internally-generated cross-hatch (See TEST SIGNAL
SELECTION on page 11.)
Convergence adjustment3. Expose only RED by covering the GREEN and BLUE
Electrical focus
(PAL/NTSC)lenses with caps.
4. Loosen the RED lens fixing screws (refer to Fig. a), and
GENERAL ADJUSTMENTS
adjust the RED lens focus to obtain the sharpest point
Yoke horizontalWhite balance
while observing the middle and peripheral sections of the
screen.
Sub bright adjustment
End
DESCRIPTION OF NECK COMPONENTS
1
2
Fig. a
5. Use the focus VR of OR� of the focus pack in order to adjust
SPECIFIC INFORMATIONSthe electric focus in the middle and peripheral sections of
the screen to its sharpest level.
S.V.M. COIL
6. Check the RED focus of the whole screen and if necessary
1 Deflection yoke and convergence yoke.
repeat steps 4 and 5.
The position on the neck is required most front (CRT fun-
7. Fix the RED lens by tightening its fixing screws.
nel side) and the screw is fastened after rotating yoke ad-
8. Expose only GREEN by covering the RED and BLUE
justing picture tilt.
lenses with caps.
2Centering magnet
9. Display the internally-generated cross-hatch signal.
After adjusting picture tilt, picture position is finally fixed
10. Adjust the GREEN lens focus on the left border of the
by this magnet.
screen to its sharpest level, then check the focus on the
In order to get maximum margin of user convergence con-
right border, and if it is at its sharpest level, fix it in that
trol for center of screen, this magnet have to be used for
position by tightening the lens screws.
center convergence adjustment.
PREPARATION(1) If the horizontal line toward the right border is red-
Operate the receiver for at least 5 minutes.flared, turn the lens screw slightly right in order to
balance it with the left border. (After adjustment, the
R, G, B CUTOFF (SCREEN VR) ADJUSTMENTleft border tends to be slightly green-flared, and the
1. Adjust before replace the screen assembly.right border tends to be slightly red-flared.)
2. Set user control to reset position.(2) If the horizontal line toward the right border is green-
CONTRAST ? Maxflared, turn the lens screw slightly left in order to
()
BRIGHTNESS, COLOR, TINT ? Center.balance it with the left border. (After adjustment, the
3. Call up the adjustment mode display, then select theleft border tends to be slightly red-flared, and the
item RCUT.
right border tends to be slightly green-flared.)
4. Adjust the data of items RCUT, GCUT, and BCUT to
"40H".
Note:The aim of the above-described adjustment procedure
5. Press the -/-- button on Remote. (Y-MUTE : ON)
for the Green lens focus is to obtain the best lens focus
6. Gradually rotate R, G and B screen volume of FOCUS
after 2 - 3 hours of warming up taking into account the
PAC clockwise or counterclockwise until the raster
focus drift; it applies if the warming up time before the
appears slightly on the CRT through the each lens, and
leave them.adjustment is less than 30 minutes. (The horizontal line
(Lookin to the lens in order to check the raster.)in the screen middle section tends to be slightly red-
7. Press the -/-- button on Remote. (Return to Normalflared.)
Picture)
� 6 � |
ACEC
