0ISTLSSG009A datasheet(14/26 Pages) TOSHIBA

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ADJUSTMENT INSTRUCTIONS

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)

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.

[ 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>.

starting point of noise

(appearance GREEN)

<Fig. 16> TEST Pattern(RED Pattern)

<Fig. 15> TEST Pattern(Lamp Gray Pattern)

<Fig. 17> 16Gray Scale/H Pattern

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