ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions are applied to all of the color TV,
2. Notes |
(1) Because this is not a hot chassis, it is not necessary to use |
an isolation transformer. However, the use of isolation |
transformer will help protect test instrument. |
(2) Adjustment must be done in the correct order.But the |
4. Purity & Convergence adjustment
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| As preparatory operations before |
CPT Assembling |
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| assembling CPT, wind cotton Tape for |
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| protecting to CPT NECK and DY, CPT |
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| connection parts. At this moment, end |
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| of tape should be |
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| wound in direct route to the NECK. |
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adjustment can be changed by consideration of mass |
production. |
(3) The adjustment must be performed in the circumstance of |
25±5°C of temperature and 65±10% of relative humidity if |
there is no specific designation. |
(4) The input AC voltage of the receiver must keep rating |
voltage in adjusting. |
(5) The receiver must be operated for about 15 minutes prior |
to the adjustment. |
3. Focus adjustment |
3.1. Preliminary steps
Tune the TV set to receive a digital pattern.
(SVC mode:Automatically mode change the STANDARD
Assembling DY to
CPT
HEAT RUN
Degaussing
STC Adjustment
PURITY Adjustment
DY Fixing
SCREEN Voltage adj.
W/B Fixing
Fix the Magnet to the position as shown picture below. Be careful not to make CPT neck shadow while adjusting DY.
Convergence Magnet |
| 6Pole 4 | 2 | ||||||
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Let the screen Standard condition. 
Operate
minutes.
Torque is to be
MODE)
3.2.Adjustment Method
1)Single Focus CPT
Adjust the upper Focus volume of FBT for the best focus of horizontal line A,vertical line B.
2)Double Focus CPT
a)Adjust the lower Focus volume of FBT for the best focus of vertical line B.
b)Adjust the upper Focus volume of FBT for the best focus of area A.
c)Repeat above step 1) and 2) for the best overall focus.
A | B |
| <Fig 1. PAL Digital Pattern(EU05CH)> |
FOCUS not yet ADJ.
STC not yet ADJ.
DYC not yet ADJ.
4.1.Color purity adjustment
(1)It makes CPT or CABINET enough to demagnetization.
(2)Receive the signal of red raster.
(3)Loosen fixed screw of DY and closely to CPT funnel part.
(4)Check the center of screen that PURITY MAGNET of CPT by crossing adjustment. At this time, 4 & 6 pole magnet is located to magnet of nothing.
(5)Move the DY to make equal red on whole screen and it does not to make the DY by fixed screw after check a simple color of Red/Green/Blue and white raster whether or not it is a pollution of color.
(At this time, take care raster of screen and DY must fixing in the condition which maintains a horizontality.)
(6)Check the TV set by move direction.
4.2.Convergence adjustment
These adjustments can the best condition of focus after finished purity adjustment.
(1)Receive the signal of cross hatch that BACK RASTER is black.
(2)Adjust brightness and luminosity till dot appear 9 ~12.
(3)Open angle of the two tab of 4 pole MAGNET by isogonic angle and accord with vertical line of red and blue color in the middle of screen.
(4)Maintain as angle of (3) and rotate the tab to accord with vertical line of Red and Blue color in the middle of screen.
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