TDA9341PS/N3/3/1537 データシートの表示（PDF） - NXP Semiconductors.

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TDA9341PS/N3/3/1537

Eeprom TDA9341 / DIP 64PIN

NXP Semiconductors. 

3). White Balance Adjustment

Generally, white balance adjustment is made with professional equipment. It’s not

practial to get good white balance only through manual adjustment. For TVs with

I 2 C bus control, change the bus data to adjust white balance.

2. Circuit Adjustments

Preparation:

Circuit adjustments should be made only after completion of set-up adjustments.

Circuit adjustments can be performed using the adjustable components inside the TV

set. For TVs with I 2 C bus control, first change the bus data.

1). Degaussing

A degaussing coil is built inside the TV set. Each time the TV is powered on, the

degaussing coil will automatically degauss the TV. If the TV is magnetized by

external strong magnetic field, causing color spot on the screen, use a specific

degausser to demagnetize the TV in the following ways. Otherwise, color

distortion will exist on the screen.

1.1 Power on the TV set and operate it for at least 15minutes.

1.2 Receive red full-field pattern.

1.3 Power on the specific degausser and face it to the TV screen.

1.4 Turn on the degausser.Slowly move it around the screen and slowly take it away

from the TV.

1.5 Repeat the above steps until the TV is degaussed completely.

2). Supply Voltage Adjustment

Caution: +B voltage has close relation to high voltage. To prevent X-ray

radiation, set +B voltage to the rated voltage.

1.1 Make sure that the supply voltage is within the range of the rated value.

1.2 Connect a digital voltmeter to the +B voltage output terminal of the TV set. Power

on the TV and set the brightness and sub-brightness to minimum.

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