Confidential
5-7
5.1.4 Fusing Unit
[ Caution and Request for Replacement of Maintenance Parts ]
(1) The fuser unit is the unit replaceable component and consists of the important
parts that are important for the product safety. The disassembly and replacement
of the maintenance parts shall be performed by the skillful personnel having
completed the appropriate training and at the appropriate location having the
test facilities for the product safety test.
(2) The wiring of the fusing unit is different subject to the voltage specification,
and therefore the wrong installation may cause the H2 error.
(3) When replacing the fusing unit, leave the machine for approx. ten minutes while
the power supply of the machine is ON. Then, turn it off and replace the unit.
[ Description of Applicable Work ]
Replacement of Fuser Lamp, Installation of Heater, and Internal Wiring:
Pin Assignment : 120V - , 240V -
1
.
THS1
THS2
940W
Fuser Connector
Discharge Terminal
Fuser Lamp
Connector Pin No.
To be connected to
the fuser metal frame
(Side Panel)
Insulation Resistance Tester
Thermostat (1)
Thermostat (2)
120V
240V
FG
1
3
4
2
2 3 4
[ Confirmation of Safety ]
Method of
Measurement for
Insulation Resistance:
Connect the insulation
resistance tester as
shown in the figure
above.
Judgment Criteria:
The insulation
resistance to be
100M or greater.
1
2
Caution
1
4
1
3
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