Panasonic SF4C Series Quick Instruction Manual page 53

<All beam-axis adjustment indicators (red) light up>
Cause
The beam channel with its fixed blanking
function set into valid receives light.
<OSSD indicator remains lit in red (light is not received)>
Cause
The beam channels are not correctly
aligned.
<Reference>
About counting blinks of the error indicator, count blinks from 2 seconds of no blinking.
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
Turn ON the power supply after checking the installation status.
Align the beam channels.
Align the top / bottom direction of the beam channel between emit-
ter and receiver.
Remedy
Remedy
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