Engaged state Disengaged state
PS4800
[1]
[2]
[3] [4]
Sensor flag
is OFF
Sensor flag
is ON
No. Name
[1] Pressure Release Gear
[2] Cam Gear
[3] Fixing Film
[4] Fixing Pressure Roller
PS4800 Fixing Pressure Release Sensor
Execution condition/timing
Engagement operation
• When the Fixing Pressure Roller is in a disengaged position at the start of a job
Disengagement operation
• When the Power Switch is OFF
• At occurrence of a jam
• At occurrence of an error
• When the specified period of time has passed since printing is finished.
Related error codes
• E840-0001: Pressure release mechanism error
Fixing Assembly detection
Presence of the Fixing Assembly is judged by a Fixing Assembly detection signal, which is input to the DC Controller at warm-
up rotation (at power-on/recovery from sleep mode/closing of the cover).
2. Technology
57
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