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13. CWI (Color Wheel) Adjustment
13-1. Required Test Equipments
Remote control for adjustment
13-2. Preparation for Adjustment
(1) Connect the power at TV set to turn set on.
(2) Using the remote control, enter from ADJUST to CWI.
(Base value: 250)
<Fig. 15> TEST Pattern(Lamp Gray Pattern)
13-3. Adjustment
(1) Using the Volume key, adjust CWI-Pat. 1 to the left/right.
(2) As adjustment, check the appearance noise in the TEST
Pattern.
Setting the value reduced 3~4 step at a GREEN noise
disappearing spot.
(3) Using CH UP/DOWN key of th remote control, enter the
RED PATTERN.
(4) Check the RED Pattern to uniform. After checking unless
abnormality do OK.
<Fig. 16> TEST Pattern(RED Pattern)
ADJUSTMENT INSTRUCTIONS
starting point of noise
(appearance GREEN)
[ As temperature is different sensitivity, change angle of the
color wheel. At this time, the adjustment is done because color
may be changed.
14. Main/Sub Contrast Adjustment
14-1. Preparation for Adjustment
(1) Connector RF-NTSC Cable to rear terminal.
(2) Confirms picture probably is the normal.
14-2. Adjustment
(1) Using the remote control, enter from ADJUST to Contrast.
(Base value: MAIN-135, SUB-46)
(2) Select the adjustment item of MAIN/SUB using CH +/- key.
(3) Revises the contrast of MAIN/SUB using VOL +/- key.
(4) The field and the letters are distinguished.
The field and the letters are distinguished.
Adjust to be difference of the MAIN/SUB it is few most.
14-3. Overseas Factory Production
Contrast Adjustment Method
(1) Do the same method as above method.
(2) Make the as same below pattern in VHF 6CH using RF
MODULATOR and PATTERN GENERATOR.
(3) Adjust to become dividing 15 and 16 Gray of Main/Sub
screen .
(4) Adjust to be identical Main/Sub contrast of MAX 16Gray.
(5) Make the adjustment pattern refer to <Fig. 17>.
<Fig. 17> 16Gray Scale/H Pattern
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