GENERAL ADJUSTMENTS
– 6 –
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU-
TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL.
PICTURE TUBE COMPONENTS ADJUSTMENT
ADJUSTING PROCEDURE IN REPLACING CRT
DESCRIPTION OF NECK COMPONENTS
1 Deflection yoke and convergence yoke.
The position on the neck is required most front (CRT fun-
nel side) and the screw is fastened after rotating yoke ad-
justing picture tilt.
2 Centering magnet
After adjusting picture tilt, picture position is finally fixed
by this magnet.
In order to get maximum margin of user convergence con-
trol for center of screen, this magnet have to be used for
center convergence adjustment.
PREPARATION
Operate the receiver for at least 5 minutes.
R, G, B CUTOFF (SCREEN VR) ADJUSTMENT
1. Adjust before replace the screen assembly.
2. Set user control to reset position.
(
CONTRAST
→
Max
BRIGHTNESS, COLOR, TINT
→
Center.
)
3. Call up the adjustment mode display, then select the item
RCUT.
4. Adjust the data of items RCUT, GCUT, and BCUT to “40H”.
5. Press the
button on Remote. (Y-MUTE : ON)
6. Gradually rotate R, G and B screen volume of FOCUS
PAC clockwise or counterclockwise until the raster appears
slightly on the CRT through the each lens, and leave them.
(Lookin to the lens in order to check the raster.)
7. Press the
button on Remote. (Return to Normal Pic-
ture)
User convergence center check
Lens focus
Electrical focus
Cutoff
Centering (PAL)
Convergence adjustment
(PAL/NTSC)
Yoke horizontal
End
Sub bright adjustment
White balance
S.V.M. COIL
2
1
RGB FOCUS ADJUSTMENT
1. Call-up the adjustment mode (see page 10)
2. Press
button on the remote controller in order to dis-
play the internally-generated cross-hatch (See TEST SIG-
NAL SELECTION on page 11.)
3. Expose only RED by covering the GREEN and BLUE
lenses with caps.
4. Loosen the RED lens fixing screws (refer to Fig. a), and
adjust the RED lens focus to obtain the sharpest point
while observing the middle and peripheral sections of the
screen.
Fig. a
5. Use the focus VR of “R” of the focus pack in order to adjust
the electric focus in the middle and peripheral sections of
the screen to its sharpest level.
6. Check the RED focus of the whole screen and if neces-
sary repeat steps 4 and 5.
7. Fix the RED lens by tightening its fixing screws.
8. Expose only GREEN by covering the RED and BLUE
lenses with caps.
9. Display the internally-generated cross-hatch signal.
10. Adjust the GREEN lens focus on the left border of the
screen to its sharpest level, then check the focus on the
right border, and if it is at its sharpest level, fix it in that
position by tightening the lens screws.
(1) If the horizontal line toward the right border is red-flared,
turn the lens screw slightly right in order to balance it
with the left border. (After adjustment, the left border
tends to be slightly green-flared, and the right border
tends to be slightly red-flared.)
(2) If the horizontal line toward the right border is green-
flared, turn the lens screw slightly left in order to bal-
ance it with the left border. (After adjustment, the left
border tends to be slightly red-flared, and the right bor-
der tends to be slightly green-flared.)
Note:
The aim of the above-described adjustment proce-
dure for the Green lens focus is to obtain the best
lens focus after 2 - 3 hours of warming up taking
into account the focus drift; it applies if the warm-
ing up time before the adjustment is less than 30
minutes. (The horizontal line in the screen middle
section tends to be slightly red-flared.)
Summary of Contents for 43CJH9UR
Page 45: ...HYPER SIGNAL BOARD UD1828 U901 TOP COMPONENT SIDE 47 48 ...
Page 46: ...HYPER SIGNAL BOARD UD1828 U901 BOTTOM FOIL SIDE 49 50 ...
Page 51: ...SPECIFIC INFORMATIONS TERMINAL VIEW OF TRANSISTORS 59 ...
Page 52: ... 60 MEMO SPECIFIC INFORMATIONS ...
Page 56: ... 64 MEMO SPECIFIC INFORMATIONS ...
Page 58: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...
