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CIA-575-001 Rev 1.0
9 |
P a g e
Testing / Troubleshooting the Keypad
:
Test the keypad by applying power to the PWR/RS485
connections. An “Offline” message will initially be displayed after power is applied. Once the controller
recognizes the device a standard welcome message will appear. There are also multiple LEDs as shown
below that should be active as described for troubleshooting purposes.
Main Fuse – 2A
Littelfuse Inc. 39512000440
Voltage Present LEDs
(all 3 must be lighted)
RS485 Active LEDs
(must be flashing)
Micro Controller Running
(must be oscillating)
WEIGAND LED
RELAY STATE LEDs
INPUT STATE LEDs
Figure 5
Check the 3 Power LEDs on the Keypad PCB. If all are dark, check / replace the PCB fuse. If any single
specific power LED such as the 3.3V or 5V LEDs are dark, replace the main PCB.