Printronix L1024, Maintenance Manual

Page: 109 / 372

7–13 Chapter 7 – Fuser Subsystem
7.2.3 Fuser Control Modes
Fusing Mode. In Fusing Mode, the Engine Controller keeps the Fuser at the fusing temperature. Fusing
temperature is set in 5
°
C increments from 165
°
C to 185
°
C. Proper fusing temperature depends on the
media in use.
When the Data Controller sends a print command to the Engine Controller, the Engine Controller
activates Fusing Mode. This mode is also used during engine self-test.
Standby Mode. In Standby Mode, the Engine Controller keeps the Fuser at standby temperature,
approximately 165
°
C. Standby Mode keeps the inside of the engine from getting too hot; it also reduces
power consumption.
When the Data Controller sends a print command to the Engine Controller, the Engine Controller switches
the Fuser from Standby Mode to Fusing Mode. If the engine is idle for approximately 180 seconds in the
Fusing Mode, the Engine Controller automatically switches the Fuser to Standby Mode. The Data
Controller can switch the mode from Idle to Standby by using the Standby Mode Request Command.
Idle Mode. In Idle Mode, the Engine Controller lets the Fuser cool to near ambient temperature by turning
off the power to the Fuser.
When the Fuser receives a print command, the Engine Controller switches the Fuser from Idle Mode to
Fusing Mode. The Data Controller can request Idle Mode by issuing an Idle Mode Request Command.
Note that the Engine Controller does not automatically change the Fuser to this mode.