Troubleshooting; Troubleshooting The Ncm; Communications - Johnson Controls 300 Series Manual

56 Network Control Module 300 Series Technical Bulletin

Troubleshooting

Troubleshooting the NCM

Communications

This section provides basic troubleshooting information. Additional
NCM maintenance and hardware troubleshooting information is
located in Appendix B: NCM Maintenance in this document.
If you cannot resolve your problem after checking or performing the
procedures in this section and in the Appendix B: NCM Maintenance
section, contact the Field Support Center prior to submitting a Return
Materials Authorization (RMA). For information on the NCM100
power supply, see Appendix C: NCM100 Power Supply
Troubleshooting in this document.
The following tips can help when troubleshooting the NCM300/350:
• When installing the new NU-ROM150, be careful not to touch the
edge connector with your fingers. Touching the edge connector can
leave behind oils or corrosive residues that can cause damage to
the connector.
• Do not clean the edge connectors of NU-ROM101 or
NU-ROM150 cards.
• If necessary, use contact cleaning wipes to clean the edge
connectors of ISA cards or SIMMs. Do not use erasers to clean
edge connectors.
If you are using the Ethernet/IP N1 LAN, refer to the N1 Ethernet/IP
Network Technical Bulletin (LIT-6360175) for details.
NCM Resets or Shows Error Codes when Using Ethernet
If you are using Ethernet boards and the NCM resets and/or shows
error codes for packet drivers, try using the NE2000 generic packet
driver (NE2000AT.FLH). This driver may be referred to as the
CRYNWR driver and is included with the NCM350 since
January 1997. Use NCSETUP for Windows operating systems to make
changes to the NCM.