Motorola MVME2600 manual Front Panel Indicators DS1 DS6

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Operating Instructions

Front Panel Indicators (DS1 – DS6)

There are six LEDs on the MVME2603/2604 front panel: CHS, BFL, CPU, PCI, FUS, and SYS.

❏CHS (DS1, yellow). Checkstop; driven by the MPC603/604 status lines on the MVME2603/2604. Lights when a halt condition from the processor is detected.

❏BFL (DS2, yellow). Board Failure; lights when the BRDFAIL∗ signal line is active.

❏CPU (DS3, green). CPU activity; lights when the DBB∗ (Data Bus Busy) signal line on the processor bus is active.

❏PCI (DS4, green). PCI activity; lights when the IRDY∗ (Initiator Ready) signal line on the PCI bus is active. This indicates that the PCI mezzanine (if installed) is active.

❏FUS (DS5, green). Fuse OK; lights when +5V DC, +12V DC, and –12V DC power is available from the base board to the transition module and remote devices.

Note Because the FUS LED monitors the status of several voltages on the MVME2603/2604, it does not directly indicate the condition of any single fuse. If the LED flickers or goes out, check all the fuses (polyswitches).

❏SYS (DS6, green). System Controller; lights when the Universe ASIC in the MVME2603/2604 is the VMEbus system controller.

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