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Slide 65
5. Engine
Ricoh Europe B.V.
Technical Training Centre
Fusing Unit AC Power Control
The fusing lamp is heated with AC power and is
controlled by a triac (THY1).
"On/Off control" is achieved when the gate of the
triac is turned on/off by a phototriac (PC1).
The Phototriac also acts as an isolating part.
Service Manual, Section 6.4.3
65
B273
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