HP Vectra 520 Guia de Instalação Página 63

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3-8 Hardware installation: Application Module (SNN/SNN-E)
553-4001-111 Standard 1.0 March 1997
Single board computer cards
MVME167-34 and MVME177-005
The 32 Mbyte, 33 MHz MVME167-34 single board computer (SBC) card
is the central processing unit of the Meridian MAX SNN system, based on
the MC68040 microprocessor.
The 64 Mbyte, 50 MHz MVME177-005 SBC card is the central processing
unit of the Meridian MAX SNN-E system, based on the MC68060 CPU.
Eight light-emitting diodes (LEDs) and two buttons appear on the front of
the MVME167-34 card or MVME177-005 card. The label on the card,
however, appears as “MVME 167-34A” or “MVME 167-34B” on an SNN
system, and “MVME 177-005” on an SNN-E system.
The types of LEDs and their locations are shown in Figure 3-3. The LEDs
show the following conditions:
FAIL This red LED lights when a hardware failure has occurred on
the CPU card. The LED also lights for a 7- to 10-minute duration when
the card’s on-board diagnostics is enabled during bootup.
STAT/STATUS This yellow LED lights continuously, indicating a
halt condition from the card processor.
RUN This green LED lights almost continuously but flickers when
the system processor has stopped.
SCON This green LED lights continuously when the card is the
VMEbus system controller.
LAN This green LED flickers continuously when there is an active
LAN communication.
+12V This green LED lights continuously when the card is supplying
+12V LAN power to the transceiver interface.
SCSI (Small Computer System Interface) Heavy communication
between devices is indicated by a solid light, while a flickering light
indicates less data movement.
VME This green LED lights when the card is accessing or being
accessed by the VMEbus.
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