Ricoh M052, Service Manual

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Laser Optics
SM 4-41 M052/M053/M054
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4.6.2 SAFETY SWITCHES FOR LASER UNIT
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Laser Exposure
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LD Safety Switch
A safety switch turns off when the front cover or the rear door is opened. As a result, the relay
on the PSU cuts off the power supply (+5V) to the LD board. (The electric circuits go through the
engine board) This system prevents unexpected laser emission, and ensures user safety and
technician safety.
4.6.3 LASER UNIT
The removal procedure of the "Preparation before Removing the Laser Unit" differs depending
on the models. Refer to the target model under the "Preparation before Removing the Laser
Unit".
Preparation before Removing the Laser Unit
For M052 models
1. Output tray ( p.4-21)
For M053 models
1. 1 bin tray unit ( p.4-126).
2. Output tray ( p.4-21)
For M054 model
1. Internal finisher ( p.4-104)