Model 940 Reader
Installation Manual
22
Testing the reader
Follow the steps below to verify that the reader is working 
correctly.
1. Check the following:
• Proper cabling and electrical connections exist 
between the reader and the microcontroller. 
• The microcontroller is properly configured and the 
proper version of firmware is installed. 
• The reader is properly mounted.
2. Close the tamper switch by joining the reader and 
backplate so that the tamper alarm is not activated or by 
ensuring the reader is securely mounted. 
3. Apply power to the reader and verify that the power-on 
self test completes as described in the section 
“Indicators” 
on page 23
. 
4. Verify that the reader is not beeping and that the red LED 
is not flashing. If either of these two conditions exist, 
refer to the section 
“Indicators” on page 23.
5. Verify proper reader operation as follows: 
a. Select a known good test badge. Be sure that the 
badge is properly enrolled in the host system.
b. Ensure that the door is closed and latched. This is the 
first step to verify that the reader strike relay is wired 
properly. 
WARNING:   It is important to ensure all connections are made 
prior to applying power.