NEXUS STATION | TECHNICAL OPERATIONS AND MAINTENANCE GUIDE APR/2017
27 ELECTRONIC COMPONENTS | SECURITY DOOR
Security door
The security door assembly attaches to the front of the core-turnstile assembly. It can be ordered separately
as a replacement part or as a part of the full core-turnstile assembly.
Nexus Station security door assembly
Electronic components
The main circuit board and display circuit board control the operation of the station. Every motor and other
electronic part has a harness that connects it to one of these two boards, which are mounted vertically
above the turnstile assembly and behind the display panel.
Electronic components including the pin actuator, RFID assembly, storage LED, and LED tube covers also
include small circuit boards, which are replaced along with the full assemblies for those individual compo-
nents.
Circuit boards
The larger, primary board controls various motors and sensors elsewhere in the station, and the smaller
board—mounted at the front, center portion of the larger board—controls the display interface and includes
RFID and Ethernet connections as well. Both control boards are mounted vertically at the top of the turnstile
assembly, immediately behind the display.
TABLE 11. Bearing assemblies
Part Number Description Recommended maintenance
56758301 Security door assembly Replace when needed
TABLE 12. Nexus Station circuit boards
Part Number Description Recommended maintenance
86507702 Interface PCB assembly (main circuit board) Replace when needed
86396301 Assembled PC board, HMI 3 (display circuit board) Replace when needed
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