Technical data

2-2 Computer Group Literature Center Web Site
Startup and Operation
2
Initial Conditions
After you have verified that all necessary hardware preparation has been
done, that all connections have been made correctly, and that the
installation is complete, you can power up the system. Applying power to
the system (as well as resetting it) triggers an initialization of the
MVME172LX’s MPU, hardware, and firmware along with the rest of the
system.
The Flash-resident firmware initializes the devices on the MVME172LX
board in preparation for booting the operating system. The firmware is
shipped from the factory with an appropriate set of defaults. In most cases
there is no need to modify the firmware configuration before you boot the
operating system. For specifics in this regard, refer to Chapter 3 and to the
user documentation for the MVME172Bug firmware.
FAIL LED (red) Board failure. Lights when the BRDFAIL* signal line is active. Part
of DS1.
RUN LED (green/amber) CPU activity. Lights when the local bus TIP* signal line is active.
This indicates that one of the local bus masters is executing a local
bus cycle. Part of DS1.
SCON LED (green) System controller. Lights when the MVME172LX is functioning as
VMEbus system controller. Part of DS2.
FUSES LED (green) Fuse OK. Indicates that +5Vdc, +12Vdc, and –12Vdc power is
available to the LAN and SCSI interfaces and IP connectors. Part of
DS2.
Table 2-1. MVME172LX Front Panel Controls
Control/Indicator Function