0051 - TSC Sync is in Simplex Mode
Due to one or both GPSM-II cards being replaced with MCAPs after the feature bit has been set, the hardware configuration no longer supports the TSC Synchronization feature.
Example
RLGHNCXA21W 00-02-07 11:02:30 EST EAGLE 35.0.0
** 0100.0051 ** CARD 1113 OAM TSC sync is in simplex mode
Alarm Level: Major
Recovery
Replace the MCAP(s) with GPSM-II card(s).
Refer to the Maintenance Manual for card removal/replacement procedures.