Canon Staple Finisher-AA1, Service Manual

Page: 75 / 228

Buffer Pass Unit
Overview
The buffer pass unit passes the paper feeding from the host machine to the finisher.
Buffer pass feed motor (M301) controls the feed paper speed in the buffer pass unit according to the command from the finisher
controller PCB.
The 2 sensors equipped to the paper path in the buffer pass unit detect the passage and arrival of the paper. Each sensor detects
a jam when paper is not passed or arrived in the specific time.
• Buffer Pass Inlet Sensor (PI201)
• Buffer Pass Outlet Sensor (PI202)
M301
PI201
PI202
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Buffer Pass Controller PCB
Fan Operation
The 2 fans are equipped in the buffer pass unit which control temperature's rising to prevent image defect when the toner's
temperature rises in the host machine.
The fans rotate during printing process while they stop during standby. The buffer pass power supply cooling fan (FM201) rotates
in half speed during standby when temperature in the host machine specified temperature (24 - 29 deg C).
2. Technical Explanation
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