BenQ Q7T3-FP737S Service Manual page 19

Q7T3-FP737S Dual function LCD Monitor Service Guide
A-2.) Power board diagram:
EMI Filter
PWM controller
#1 EMI Filter
This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE,
VCCI standard requirements.
Rectifier and Isolation power
filter transformer
Switching element
Confidential
Circuit Operation Theory
Rectifier and filter
Rectifier and filter
Feedback Isolation
Fig.1
Fig. 2
Audio Amp and
Pre-Amp
Inverter circuit
LDO regulator
4