Operation; D20Me/Me Ii Main Board; I/O Peripherals Common Leds - GE D20 Installation And Operation Manual

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Operation

D20ME/ME II The front panel has four LED indicators, providing a visual indication of the
Main Board operational status of the unit:
•
ALARM: LED is not implemented
•
FAIL: driven by a programmed signal. Indicates that diagnostics are running or
have failed
•
HALT: driven by the halt line input of the microprocessor. Indicates that MPU
has stopped
•
RUN: driven by the address strobe line on the microprocessor. Indicates any
microprocessor activity
I/O Peripherals The WESDAC/WESTERM Peripheral pairs have a common section made up of
Common LEDS components on the WESDAC and WESTERM boards. There are seven LED
indicators on this common section.
LED Name
DS1
DS2
DS3
DS4
DS5
DS6
DS7
General
Full
Designation Normal RUN
Power On
MPU Run Flash 10/sec
Tx1 Flickers Constantly
Rx1 Flickers Constantly
Tx2 Configuration
Dependent
Rx2 Configuration
Dependent
Fault
994-0078-2.00-7
Installation and Operations Guide
Not Initialized
On On
See Next Table
Depends on Nature of
Fault
Depends on Nature of
Fault
Depends on Nature of
Fault
Depends on Nature of
Fault
Off See Next Table
D20/D200
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