POWER SUPPLY 5/5 NOTE
• IC791, IC792 and IC691 are same type of regulator IC
and the voltage from ‘output 2’ (pin4 of the IC) can
be adjusted. We see the voltage is 1.2v at pin 4 of
IC691, and others are 1.8v.
• IC793 outputs TX5V to the HDMI out jack, this 5v is
sent to the outside video monitor for HDMI
connection detect; without this 5v, the monitor
cannot accept signals from the HDMI input.
• The +2.5v and -2.5v also are not produced in main
PCB, they are from the PWM PCB; shown on the
previous page.
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