Haier HTX21S31 Service Manual page 27

GEOMETRIC ALIGNMENT:
Receive the monochrome circle pattern (NTSC system);
Check vertical center and horizontal center and H-linearity .if they are not standard, press FACTORY button to
enter service mode, and adjust vertical size, vertical linearity, vertical center, horizontal center, make them
standard.
Alignment parameter table:
Press FACTORY button on service remote controller and enter service mode: 1.Adjustment mode and2.
Setting mode;
Use CH+ or CH- button up/down pages to select items that you need adjust; use
VOL+ or VOL- button
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Adjustment