Troubleshooting and bench check procedures:
1. Connect up test wiring as shown below and insulate the gray and
white leads coming from the SE900.
2. Input 120vac into the SE900 (the light should be off).
3. Connect the red wire thru a 1000 ohm, half watt resistor to terminal
AC1 on the SE900. (the light should come on)
4. Disconnect the red wire from terminal AC1 of the SE900 (the light
should go off).
5. Check the SCR and Diode for isolation from the mounting housing.
6. If all of the above tests could be performed, the unit is good. If any
of the tests could not be performed, the unit is defective.
resistor,
1000 ohm @
1/2 watt
120 vac
input
fuse, 1 amp
15 to 100
watt 120
vac light
bulb
R E D
AC1
AC2
SE900
F+
