Specifications

Alto 818 Installation and Operation
5-6 P/N 66109074001 Rev. D
5.3 TEST PROCEDURES
Each Alto 818 undergoes rigorous quality assurance testing before it is shipped from the factory.
When a bench test is desirable, the following tests can be used to verify proper operation of the
primary input and output connections to the Alto 818.
If the Alto 818 ACU does not perform in the manner indicated in the tests, verify the test setup
and components used. If the correct responses are not achieved, return the Alto 818 to the
factory.
5.3.1 POWER ON
1. Turn the system power module on.
2 Check that the vital function LED on the Alto 818 is blinking rapidly. If not verify that the power
module is correctly installed and powered on.
3. Check that the LED on SE 28XX sensor is on. If not:
A. Check that the MSM and sensor are correctly installed.
B. Check that the sensor switch on the MSM is set correctly.
C. Check that the MSM select switch on the auto sensing board (remove ACU cover to
access) is set for the correct MSM type.