2.4.2. PSU
•
+24V, +24V(SW), +12V, and
±
5V dc generation
•
Fusing lamp ac power supply and phase control
PSU
ACN
ACL
HTL
F1
F2
+12V
+24VSW
PC Anode
Fusing Lamp
+24V
Noise
Filter
Surge
Protection
HTN
GND
-5V
Regulator
5V Monitor
GND
GND
Chopper
Circuit
Fusing Lamp Output
Inlet
Board
Main Switch
T1
Interlock SW
AC Input
Primary
Smoothing
Circuit
Switching
Circuit
Output
Detection
Control
Circuit
Phase
Control
PSU:120V/230V
The values of some parts on the
primary side are different between the
120V and 230V versions.
H528D532.wmf
DETAILED SECTION DESCRIPTIONS July 30th, 1996
PCBs
2-32