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Short circuit protection
All voltage outputs shall have short circuit protection. Only 5Vs output shall be auto recovery after the short
condition removed.
Over voltage protection
All voltage outputs shall have over voltage protection, besides –20V( 6.24V for 5.1V, 5Vs outputs, 14.9V for 12V,
12Vs outputs, 9.06V for 8V output, 25V for 20V output, 415V for 380V output )
Under voltage protection
All voltage outputs shall have under voltage protection, besides +/-20V and 380V outputs( 4.12V for 5.1V, 5Vs
outputs, 9.7V for 12V, 12Vs outputs, 6.92V for 8V output )
Over temperature protection
There are 2 components TH200 on and TH201 that can sense the temperature on the heat sink HS200 and
HS201. When an abnormal condition is happened to make the temperature on HS200 or HS201 be more than
105'C, then TH200 or TH201 will be open to shutdown PFC or Main power.
2.3. A/V board PCBA（Refer to picture 3）
For multi input audio and video signal ,composite , S-video , component .Video go to I/P board And audio go to
audio board and A/V output.
Audio/Video switch
The CX2069Q is a 7-input, 3-output audio/video switch featuring I
C bus compatible for TVs.
2
This IC has input pins that are compatible with s2 protocol.
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