Honeywell SYA14 Series Manual page 66

Figure 1. Troubleshooting Flow Diagram (sheet 1)
On the receiver unit, the red "OFF"
operation indicator is permanently
***
on although no object stands in
the ligth curtain sensing field
On the receiver unit, is the
yellow signal strength LED NO
permanently off ?
Are the emitter and receiver units
properly aligned and are front
windows clean ?
YES
On the emitter unit,
does the status of the 3
yellow scanning range LEDs
conform to the used
scanning range ?
YES
On the emitter unit, is
YES
the red test LED
permanently on ?
NO
Go to sheet 2
66
Make correct alignment and
NO
clean front windows
Machine
NO YES Machine working
operates?
Change the position of the
emitter selector switch, and
NO
make sure the emission
power conforms to the used
scanning range
Machine
NO YES Machine working
operates?
Make the connection
YES between terminals 4 and 5
on the emitter.
Machine
NO YES Machine working
operates?
107031-23 EN FR26 GLO 1199 Printed in France