Laserfiche WebLink
-02/21/2003 FRI 12.04 FAX 562 799 9443 JCI OPERATIONS CYPRESS 2012/013 <br />Schedule 212 <br />- METASYS-_ <br />Network Control Units (NCU) <br />and <br />Network Expansion Units (NEU) <br />On a Scheduled Basis <br />Check LED Indications to verify proper DC power <br />levels, appropriate Transmit and Receive activity on <br />the N1. N2 and L2 trunks, and to check for possible <br />Error Code indications. <br />Inspect wiring for signs of corrosion, fraying and <br />rapid discoloration. <br />Check voltage level of NCU Battery sub - module. <br />Cycle NCU power to initiate Self -Test Diagnostic. <br />Monitor LED sequencing for proper self -test displays <br />or Error Code indications. <br />Remove excessive dust from heat sink surfaces. <br />Additional Tasks and /or Special Instructions: <br />Form E9761 (Rev 10 /00) <br />Clean Network Terminal Unit (NTU) faceplate and <br />input pad, if present. <br />Clean transparent window in door, if appropriate. <br />Clean enclosure exterior surfaces. <br />Verify the proper operation of critical control <br />processes and points associated with this unit and <br />make adjustments, if necessary. <br />As. Required <br />Verify /calibrate other points and control processes, <br />where the need for possible "Corrective <br />Maintenance" is indicated. <br />