Front Panel Indicators (Ds1 - Ds6) - Motorola MVME2600 series Installation And Use Manual

Operating Instructions
Front Panel Indicators (DS1 – DS6)
2
2-4
There are six LEDs on the MVME2603/2604 front panel:
, , and .
PCI FUS SYS
(DS1, yellow). Checkstop; driven by the MPC603/604 status
CHS
lines on the MVME2603/2604. Lights when a halt condition from
the processor is detected.
(DS2, yellow). Board Failure; lights when the
BFL
line is active.
(DS3, green). CPU activity; lights when the
CPU
Busy) signal line on the processor bus is active.
(DS4, green). PCI activity; lights when the
PCI
Ready) signal line on the PCI bus is active. This indicates that the
PCI mezzanine (if installed) is active.
(DS5, green). Fuse OK; lights when +5V DC, +12V DC, and
FUS
–12V DC power is available from the base board to the transition
module and remote devices.
Note
Because the
FUS
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).
(DS6, green). System Controller; lights when the Universe
SYS
ASIC in the MVME2603/2604 is the VMEbus system controller.
LED monitors the status of several voltages on
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, , ,
CHS BFL CPU
∗
signal
BRDFAIL
∗
(Data Bus
DBB
∗
(Initiator
IRDY