Motorola MVME2700 Series Servisní příručka stáhnout pdf (Strana 87)

Power-up the System

http://www.motorola.com/computer/literature 2-3

Front Panel Indicators (DS1 – DS6)

There are six LEDs on the MVME2700 front panel. The LEDs perform the

functions listed below.

Notes

1. At reset, a lamp test function illuminates all the LEDs.

2. Because the

FUS LED monitors the status of several voltages on the

MVME2700, it does not directly indicate the condition of any single

fuse. If the LED flickers or goes out, check all the fuses

(polyswitches) described in Chapter 3, Functional Description.

Table 2-1. MVME2700 LEDs

LED Function

CHS

(DS1, yellow)

Checkstop; lights when a halt condition from the

processor is detected.

BFL

(DS2, amber)

Board failure; indicates a fault is present on the

MVME2700.

CPU

(DS3, green)

CPU activity; lights when the MPC750 processor bus is

active.

PCI

(DS4, green)

PCI activity; lights when the PCI bus is active.

FUS

(DS5, green

Fuse OK; indicates that +5V DC, +12V DC, and

–12V DC power is available on the board.

SYS

(DS6, green)

System Controller; lights when the MVME2700 is

functioning as VMEbus system controller.

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Motorola MVME2700 Series Servisní příručka Strana 87