Haier HS-2190, Руководство по обслуживанию

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3. Baseboard testing method:
(1) Connect the main baseboard to a 21
″
factory-assembled color TV set, and connect the
company’s adjusting signal.
(2) Switch on the 220V main power supply and press the P+, P- buttons on user’s remote
controller to check grid, electronic circle, color bar, test card (without color), three primary
colors, color test card signals on position number 0, 1, 2, 3, 4, 5 respectively. It is required
that no program is missed, otherwise use auto search or manual search to have all the signals
received.
(3) Receive the color test card signal. When you adjust the control of volume, contrast,
brightness, color saturation, clarity, the sound and picture shall change accordingly.
(4) For TV system test, select the system control menu with the remote controller to have the
following displayed on the menu screen:
Color AUTO
Sound D/K (or B/G)
(5) To test the AV input, press TV/AV button and the TV-AV picture signals will be displayed
in turn. Corresponding audio and video input signals shall be observed on the oscilloscope
and the picture and sound of the factory-assembled TV set shall be proper.
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