FCO 9XXX-0010, Rev B Config of airflow/speed control & temp sensors

This Field Change Order (FCO 9XXX-0010, Rev B) addresses a critical issue in VAX 9000-3XX/4XX systems where the second CPU cabinet fails to power up if the first Universal Power Converter (UPC) is not on, due to misconfigured airflow, speed control, and temperature sensors. The solution involves replacing two existing sensor cables (17-02756-01 and 17-02757-01) with new ones (17-03137-01 and 17-03138-01) to reconfigure the sensors in the first CPU cabinet, thereby eliminating airflow faults.

The procedure requires the prior installation of V14.2 console software, including RIC software, and involves a full system shutdown, loading new PEM and RIC firmware (V8.7 for new cables), physical replacement of the sensor cables in the CPU cabinet, and re-verification of the system's sensor readings. New cables are supplied in kit EQ-01629-01. The document also includes warnings about using the correct RIC firmware versions to prevent system power-off and appendices detailing upper blower motor replacement and updated OCP (Operational Checkpoint) codes for RICs 12 & 22 reflecting the sensor configuration changes.