WARNING: BEFORE SERVICING THIS CHASSIS, READ THE OX-RAY RADIATION PRECAUTION�, OSAFETY PRE-
CAUTION� AND OPRODUCT SAFETY NOTICE� ON PAGE 3 OF THIS MANUAL.
SET-UP ADJUSTMENT
The following adjustments should be made when a complete realignment is required or a new picture tube is installed.
Perform the adjustments in order as follows :
1. Color Purity
2. Convergence
3. White Balance
Note: The PURITY/CONVERGENCE MAGNET assembly and rubber wedges need mechanical positioning.
Refer to figure 1.
Mounting position of the purity magnet assembly should fit to same position as old one because slightly difference
to the position depend on a kind of tube.
GENERAL ADJUSTMENTS*There are no adjustment of purity and convergence in some picture tube (Unified with purity magnet)
COLOR PURITY ADJUSTMENT
NOTE : Before attempting any purity adjustments, the re-5. Remove the Rubber Wedges.
ceiver should be operated for at least fifteen minutes.6. Rotate and spread the tabs of the purity magnet (See
1. Demagnetize the picture tube and cabinet using a de-figure 2.) around the neck of the picture tube until the
gaussing coil.green belt is in the center of the screen. At the same
2. Set the brightness and contrast to maximum.time, enter the raster vertically.
3. Use a green raster from among the built-in test signals.7. Slowly move the yoke forward or backward until a uniform
4. Loosen the clamp screw holding the yoke and slide thegreen screen is obtained. Tighten the clamp screw of
yoke backward or forward to provide vertical green beltthe yoke temporarily.
(zone) in the picture screen.8. Check the purity of the red and blue raster.
SPECIFIC INFORMATIONS
TEMPORARY
MOUNTING
(Put on after
DEFLECTIONadjustment)
YOKE
20mm(28", 32")
25mm(25")
19mm(19", 20", 21")
14mm(13", 14")
RUBBER WEDGE
ADHESIVE
PURITY/
DEFLECTION
YOKECONVERGENCE
MAGNET ASS'Y
GLASS CLOTH
TAPES
Figure 1.
� 4 � |
ACEC
