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March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 FUSER UNIT
14 - 17
14.6 Disassembly and Replacement
[A] Heater control PC board (IH board)
(1) Open the front cover. Then pull out the trans-
fer/transport unit by turning its handle clock-
wise.
Fig.14-10
(2) Remove 2 screws and open the IH cover-1
carefully to the front side.
Fig.14-11
(3) Remove 4 screws and then release 4 power
supply harnesses of the IH coil.
Notes:
1. Be sure that each of these harnesses is
connected to the proper position.
2. Use tightening torques of 1.2-2.0 N•m for
the 4 screws connecting these power
supply harnesses.
3. Since the IH board is a high-voltage sec-
tion, be sure to pull out the power cable
before starting maintenance or checking.
Especially do not touch the IGBT when
the power is ON since it is generating
high-voltage.
Fig.14-12
IH cover-1
Screw
Screw
Blue
Black
(
Without tag
)
Red
IGBT
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