User Guide

Duplexer fan control
The duplex unit has one fan for preventing the temperature from rising in the duplex unit. The duplex
controller determines if the duplex fan has failed and notifies the formatter through the DC controller
when the fan fails to operate for a specified time during start-up.
Figure 1-61 Duplexer fan
Duplex fan
Table 1-21 Duplexer fan
Fan Cooling area Type Speed
FM1 Duplex fan Duplexer inside Exhaust Full
Duplexer fan failure detection
The duplex controller determines if the duplex fan has failed and notifies the formatter when the fan
locks for a specified time during start-up.
Duplexer reverse and feed operation
The duplexer reverses the feed and delivery rollers in the product to print on both sides. The paper that
passed through the fuser unit reverses its feeding direction and is fed to the duplexer. The duplexer
78 Chapter 1 Theory of operation ENWW