HS75 Sony
37
Feedback circuit:
Alternating voltage exists at the two terminals of R842 when the loads are working. After being commuted
and filtered, it changed to a DC sampling voltage. Apply the voltage to PIN8 of U801, and it is used to control
the duty of pulse output. The whole process acts as steadying the output voltage.
R842
1K 1/10W
R809
220 1/16W
D802
BAV99
3
1
2
CN802
CONN
1
2
R
811
390
1/16W
R808
2K 1/16W
C
810
0.047uF
/25V
ISEN
PIN8 of U801
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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