Diagnostic aids
3-73
Heat roll
The heat roll is a hollow metal tube with a coated surface. This tube is heated by the inner heater lamp. The
heat is applied to the media passing between the heat roll and pressure roll, fusing the toner on the media.
Pressure roll
The pressure roll is used to apply pressure to the media surface for fusing. Pressure is applied to the media
between the pressure roll and heat roll, pressing the melted toner against the media.
Heater lamp
The heater lamp is a quartz glass tube containing a heater coil. A terminal is mounted to the end of the heater
rod via a harness.
Thermal cutoff
If the heat roll temperature exceeds the preset temperature, the thermal cutoff cuts off the circuits of the main
heater lamp and sub heater lamp.
Thermistor
The thermistor monitors the surface temperature of the media-feed portion of the heat roll to control on/off of
the main heater lamp and sub heater lamp.
Sensor (fuser output)
The sensor (fuser output) detects the arrival of media at the detection point in the exit area of the fuser, and
also detects the ejection of media from this point.
Sensor (narrow media)
The sensor (narrow media) detects the arrival of narrow media at the detection point in the exit area of the
fuser, and also detects the ejection of media from this point. It is used to make adjustments to ensure that
narrow media is properly fused.
Fuser unit assembly (type 1 and type 2)
Type 1 fuser unit assembly
In the type 1 fuser unit assembly, the detacs, which are used to prevent the media from sticking to the hot roll,
do not make contact with the hot roller. The type 1 fuser unit assembly has a life of 300K.
Pressure roll
Hot roll
Hot roll
Pressure roll
Fuser lamp
Non contact detac
Non contact detac
Содержание 5230DN
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Страница 276: ...3 70 Service Manual Conceptual diagram of an image created by scanning Paper Path 600 scans inch 600 dots inch ...
Страница 294: ...3 88 Service Manual Pick arm assembly Sensor media empty Sensor media low 550 sheet drawer assembly Sensor pass through ...
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Страница 366: ...4 48 Service Manual 6 Remove the operator panel hinge assembly right ...
Страница 369: ...Repair Information 4 51 9 Lift the operator panel door assembly out of the machine ...
Страница 436: ...4 118 Service Manual 3 Remove the HCIT tray cover front A ...
Страница 438: ...4 120 Service Manual 3 Remove the HCIT cover rear ...
Страница 440: ...4 122 Service Manual 3 Remove the HCIT cover right ...
Страница 464: ...4 146 Service Manual 4 Disconnect the sensor pass through harness from the controller card and remove the sensor ...
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Страница 530: ...7 8 Service Manual Assembly 4 Drive motor assemblies and duplex ...
Страница 532: ...7 10 Service Manual Assembly 5 Media path and ducts 1 2 2 3 4 5 6 7 8 9 10 11 12 12 ...
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Страница 536: ...7 14 Service Manual Assembly 7 Pick arm assembly trays and MPF ...
Страница 538: ...7 16 Service Manual Assembly 8 LVPS fuser and electrical cables 1 ...
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