I am having "P.P Alarm:20" on MRC. Before it is good but I unplug the pendant and connect it again.
P.P ALARM : 20 MRC
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dhruvil10 -
January 28, 2022 at 3:38 PM -
Thread is Unresolved
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The PP 20 alarm means the main processor (MCP01) can't talk to the pendant. So it can be the pendant and pendant cable. In an MRC the pendant cable runs into the board on the back of the playback box, it can be that card. If you have replaced the pendant and cable and the board on the playback box the next two things are the I/O rack and the MIF01 card. The MIF01 card holds all your memory so I hope you have a backup, and watch the EEPROM chip on the MIF01. The replacement MUST have the same software version. If not swap the chips as well.