The reffered link is for ECC errors and not for the asked question.
This one is for packet errors...
And I just saw such error, for overload condion (due to almost 90% interface load condition,due to flood) of an interface:
Mar 24 21:14:07 <23.4> lo0.r1 ICHIP(0):IP inter status:0x20, log:0x00000000
Mar 24 21:14:07 <23.4> lo0.r1 fpc0 ICHIP(0): IP dispatch drop
Mar 24 21:14:07 <23.3> lo0.r1 fpc0 CMALARM: Error (code: 1219, type:Major) encountered, cmalarm_passive_alarm_signal
Mar 24 21:14:07 <23.4> lo0.r1 fpc0 ICHIP(0): New packet drops in WO IP stream_id 0, iwo_ip_poll_stream_stats
Here are the alarms:
Mar 24 21:21:11 <23.4> lo0.r1 alarmd[4730]: Alarm cleared: FPC color=RED, class=CHASSIS, reason=FPC 0 Major Errors
Mar 24 21:21:11 <23.4> lo0.r1 craftd[4731]: Major alarm cleared, FPC 0 Major Errors
Mar 24 21:21:16 <23.3> lo0.r1 fpc0 CMALARM: Error (code: 1219, type:Major) encountered, cmalarm_passive_alarm_signal
Mar 24 21:21:19 <23.3> lo0.r1 fpc0 CMALARM: Error (code: 1219, type:Major) encountered, cmalarm_passive_alarm_signal
Mar 24 21:21:23 <23.3> lo0.r1 fpc0 CMALARM: Error (code: 1219, type:Major) encountered, cmalarm_passive_alarm_signal