Ricoh infotec 3671F Service Manual page 49

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