Fans
The product has 11 fans that prevent the temperature from rising in the product and for cooling
delivered paper.
Table 1-10 Fans
Abbreviation Component name Area cooled Type Speed Failure
detection
FM1 Laser/scanner fan Laser/scanner area and
formatter
Intake Full/half
FM2 Fuser fan Fuser Intake Full/half
FM3 Cartridge fan (Y/M) Around the cartridge (Y/M) Exhaust Full Yes
FM4 Cartridge fan (C/K) Around the cartridge (C/K) Exhaust Full Yes
FM5 Low-voltage power
supply fan
Low-voltage power supply unit Exhaust Full/half
FM6 Cartridge front-area
fan
Toner-cartridge and imaging-
drum area
Intake Full/half
FM7 Delivery unit fan Delivery unit Intake Full
FM9 Fuser edge area
cooling fan (rear)
Around the rear edge of fuser
sleeve
Exhaust Full/half Yes
FM10 Fuser edge area
cooling fan (front)
Around the front edge of fuser
sleeve
Exhaust Full/half Yes
FM301 Duplex fan 1 Duplexing driver PCA Intake Full
FM302 Duplex fan 2 Output bin area Exhaust Full/half
Automatic damp paper detection
The product automatically detects damp paper. This helps to avoid jams caused by curling damp
paper.
The DC controller detects damp paper by measuring the resistance value of the transfer roller during
a transfer operation. Also, the DC controller records the damp condition of paper that is loaded in the
input devices.
The DC controller optimizes the fuser temperature control and prevents an occurrence of paper curl
when the damp paper is fed through the product.
14 Chapter 1 Theory of operation ENWW
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