Stack st8130 series - Appendix C. Summary of Switch Functions

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No. Symptom Possible Cause Remedy Notes
15 Switch 3:
Change
display layer
function does
not work
Switch 3 faulty Replace switch Disconnect switch
and short its leads.
If display changes,
replace Switch 3.
Otherwise check
wiring.
Faulty switch wiring Check switch wiring
for correct
continuity.
Pin U to orange S3
wire less than 1.0
Ohm and Pin U to
Pin H (earth)
greater than 1M
Ohms)
16 Switch 4 does
not reset the
trip value back
to zero
Lap Marker
Receiver triggered
Turn off Beacon
Switch 4 faulty
Replace switch Disconnect the
switch and short
the leads together.
If the display
changes replace
Switch 4. Otherwise
check wiring.
Faulty switch wiring Check switch wiring
for correct
continuity.
Pin U to yellow S4
wire less than 1.0
Ohm and Pin U to
Pin H (earth)
greater than 1M
Ohms)
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