This is a power factor corrector. I think you want a boost converter. I will not talk about PFC and go to the boost converter part.
F1 fuse.
C1,2,3,4, LF1 noise filter
NTC is a inrush limiter.
BD converts AC to DC.
C5 main input filter. DC at this point.
Q1 when on causes current to flow through T1 to ground. T1 being an inductor not a transformer. (At this point.) Then Q1 opens up the current flowing wants to keep flowing. The voltage at T1-Q1d flys up to more than the DC on C5. The current goes through D2 into C9. When the current runs down (or when Q1 turns on) the foltage on Q1d drops back. The point of this thing is to make VC9 greator than VC5.
T1 has a secondary that sends power to the "FAN7529" and sends a signal into pins 3 and 5,6.
R10,11 is for feedback. In a PFC the out put voltage is 400 volts.
What do you want to know?