Epson Stylus Photo 925 - Print Adjustments

EPSON Stylus Photo 925 Revision A
Operating Principles Electrical Circuit Operating Principles 41
Figure 2-17. C408 PSB/PSE Board Block Diagram
ZC-RCC Converter
5V Chopper
Circuit
+42VDC
+5VDC
+3.3VDC
PSC signal from
Main board
Energy saving
signal
Smoothing
Circuit
C51, C52D51
TRANS (T1)
Main Switch
Circuit
Over Current
Protection
Filter Circuit
C11DB1L1, C1F1, TH1
AC Input
Q1
• Over current protective
function
• Over voltage protective
function
• Secondary side SW function
with delay circuit
• Power saving mode applied
3.3V Chopper
Circuit
Full Wave
Rectifier
Circuit
Smoothing
Circuit