akira CT-21CDP5CPT, Service Manual

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Model no.:CT-21CDP5CPT.doc
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1.3 White Balance Adjustment
Generally, white balance adjustment is made with professional equipment. It’s not practical to
get good white balance only through manual adjustment. For TVs with I2C 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 2 I C bus control, first change the bus data.
2.1 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 be shown on the screen.
•Power on the TV set and operate it for at least 15 minutes.
•Receive red full-field pattern.
•Power on the specific degausser and face it to the TV screen.
•Turn on the degausser. Slowly move it around the screen and slowly take it away
from the TV
.•Repeat the above steps until the TV is degaussed completely.