Question about Sony DAV-DX250 System
The display is controlled by a Princeton Technology Corp. PT6315, which has an eight-step dimming circuit, which appears to control output pins GR1, GR2, GR3, and GR4. The dimming circuit is controlled by command 4 from the microcontroller. When I observe the GR1, GR2, GR3, and GR4 outputs on a scope I see a waveform varying between zero and -30 volts, with the high portion approximately 1/8 of the cycle, which corresponds with the dimmest pulse width of 2/16. However, I am unable to find how the microcontroller senses ambient room light to control the display brightness via command 4.
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Posted on Jan 02, 2017
SOURCE: Hi there
Optical is for "audio only" you need to send Video from whatever source you are hooking up, ie. TV,DVD,DSS,etc. Use what the source has, if it's got Component Video out, use that, Don't use HDMI! still too many firmware issues! Make sure when you hook it up to the receiver that you hook it up to the same input as your audio, just on the video side. It will say DVD or DSS or CBL next to the green,blue,and red inputs. Hope this helps
Posted on Jun 21, 2009
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Posted on Dec 16, 2009
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