Microchip Technology SA5 Series, User Manual

Page: 43 / 63

MAC-SA5X USER’S GUIDE
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2019 Microchip Technology Inc. DS50002938A-page 43
Chapter 5. Maintenance and Troubleshooting
5.1 PREVENTATIVE MAINTENANCE
There are no maintenance procedures or adjustments needed, aside from frequency
adjustment. See the product data sheet for environmental requirements.
5.2 ELECTROSTATIC DISCHARGE (ESD) CONSIDERATIONS
Maintenance personnel should wear ESD wrist straps when installing or working on the
MAC.
CAUTION
To avoid electrostatic discharge damage, proper ESD handling procedures must be
observed in unpacking, assembling, and testing the MAC.
5.3 TROUBLESHOOTING
If the MAC does not respond to user commands, check the following:
1. Ensure that the BAUD, flow, and syntax of your terminal interface are configured
as described previously.
2. Check all physical connections.
3. Check that the MAC is not in “compatibility mode”. Use the backslash character
“\” to exit compatibility mode.
Note: The MAC enters compatibility mode whenever legacy MAC-SA.3Xm com-
mands are entered. It stays in this mode until the user inputs the backslash
character “\”.
5.4 REPAIRING THE MAC
The MAC cannot be repaired in the field. It must be sent back to the factory for
replacement.
5.5 UPGRADING THE FIRMWARE
As of the initial release of this manual, upgrading the firmware in the field is not
supported. It must be sent back to the factory for any future upgrades, if applicable.
5.6 RETURNING THE MAC
You should return the equipment to Microchip only after you have exhausted the
troubleshooting procedures described earlier in this chapter, or if Microchip FTS
Services and Support has advised you to return the unit.