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LC-28HM2
AN-28SP2
» IC1901 (TA1300AN)
Sync separator IC.
When horizontal frequency is 15kHz (480i), IC801 can operate with its internal signal. When the frequency
is either 31kHz (480p) or 33kHz (1080i), the external clamp pulse needs to be supplied to IC IC801. This IC
produces such clamp pulse. The sync signal produced here, synchronized with the video signal, is supplied
to PC I/F PWB.
» IC7201 (IX3289CE)
Auto-wide IC.
This IC detects the scope of picture when the letterbox signal (the video signal showing black portion at top
and bottom of screen) with 15kHz horizontal frequency is received. It also detects presence of
superimposition, and is used for vertical position adjustment.
» IC3901 (CXA2020M)
Ground waves multiple sound IC.
The audio signal from the ground wave tuner (TU3201) is selected for output in accordance with user
setting suited for the audio mode. (Example: Main output in multiple sound mode, etc.)
» IC301 (TA8184F)
Sound control IC.
Based on the DAC output voltage of user setting, it controls the headphone output volume, treble, bass,
balance and loudness.
» IC415, IC416, IC417, IC403, IC404, IC405 (ADG704)
Wide bank 4:1 input analog selector IC.
One IC of IC415, IC416 or UC417 selects PC and component video signals. Then, among IC403, IC404
and C405, the choice is made whether the signal goes to PC board or goes to AV system video processing
at IC801, etc.
The video signals thus received at PC board will be digitized by AD converter, given size and positional
adjustments, synthesized in OSD, encoded to the serial data, and then sent out to the monitor.
* Component signal
Y+ component video signal supplied from D terminal 1 and D terminal 2.
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