
HS75 Sony
34
Over-voltage
Protection circuit:
1. ZD903 can be broken down when12V DC voltage increases,
which leads to the current increase through IC902, and voltage increase of C Pin of IC901, and then it cuts off
the pulse output.
2. ZD901, ZD902 can be broken down when12V and 5V DC voltage increase, which lead to SCR901 breaks
through, then 12 connected to ground and realizes over-voltage protection.
C Pin of IC901
Summary of Contents for HS75
Page 1: ...HS75 Sony 1 TFT LCD COLOR COMPUTER DISPLAY SONY Service Manual ...
Page 3: ...HS75 Sony 3 1 Precaution Warning on power connections Installation ...
Page 4: ...HS75 Sony 4 Handing the LCD screen Maintenance Transportation ...
Page 10: ...HS75 Sony 10 Navigating the menu ...
Page 11: ...HS75 Sony 11 Adjustment steps of each menu ...
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