Casi Rusco 1000-1010 Manual De Usuario

Reader LED gives 
three short, rapid 
blinks every few 
seconds. 

The reader has lost communications with the 
microcontroller.

1. Check reader-to-microcontroller wiring (refer 

to the appropriate installation drawing in this 
manual). Verify that the AUX DO is jumpered 
to the READER IN on the microcontroller. If 
the cable length is longer than 500 feet, be 
sure that the correct pull-up resistor is 
installed on the microcontroller.

2. Verify that the microcontroller has the correct 

selection for a supervised reader (refer to the 
appropriate microcontroller manual).

3. Try the reader on a different reader input of 

the microcontroller. If this corrects the 
problem, the problem is probably in the 
microcontroller.

4. Replace the reader with a known good reader. 

If this corrects the problem, return the 
defective reader for repair.

5. If you have eliminated all of the above 

possibilities (steps 1 through 4), there may be 
a significant electrical noise source present in 
the installation that is interfering with the 
reader-to-microcontroller communications. If 
so, the use of shielded wire for the reader-to-
microcontroller connections is recommended.

Reader beeps 
three short, rapid 
beeps per second 
and red LED 
flashes at the 
same rate.

Indicates a tamper violation. Verify that the 
tamper switch is held closed by fastening the 
reader back to the reader. If this does not correct 
the problem, return the reader for repair.