A lemur printer has two optical sensors (optos) to detect the presence and position of the tickets. These sensors need cleaning periodically or when paper detection or positioning issues occur.
The follow needs to be done with the printer powered off and unplugged from the AC source.
Cut/tear opto
There is an optical sensor mounted on a bracket beneath or on top of the paper guide. This optical sensor controls the ticket cut/tear position. Over a period of time there may be an accumulation of ticket dust on the optical sensor. This paper dust could cause erratic operation of the printer. In most cases cleaning off the optical sensor will resolve the above problem.
- Make sure power is off and the AC cord is disconnected from the printer.
- Using inert dusting gas or equivalent blow air over the optical sensor (see picture below).
- The printer is ready to be switched on and resume normal operation.
Above image shows a 423764 opto
Above image shows a SQ opto
Please also view our instruction video.
Load SQ Opto
A printer built after August 2014 may have a load SQ opto that is responsible for letting the printer know when it has paper stock loaded in the printer. Earlier models have a switch that requires no cleaning. Over a period of time there may be an accumulation of ticket dust on the optical sensor. This paper dust could cause erratic operation of the printer. In most cases cleaning off the optical sensor will resolve the above problem.
- Make sure power is off and the AC cord is disconnected from the printer.
- Using inert dusting gas or equivalent blow air over the optical sensor (see picture below).
- The printer is ready to be switched on and resume normal operation.
Above is a photo of a RADJW paper guide
Above is a photo of a ADJ4 paper guide