16(23)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1999-07-15
E
1541 - ASB 150 02 Uen
Faktaansvarig - Subject responsible
3
LEDs ON THE CPU-D4
The data uploaded into the upgrade FLASH memory has to be copied into the active FLASH memory.
This data move is invoked by entering the upgrade time. When the defined time is reached a restart is
invoked. The contents of the upgrade FLASH is copied into the active FLASH and the system starts up.
The same procedure is started if the exchange is restarted either by power switching or reset on the CPU-
D4 board. This copying process is indicated by the upper LEDs on the CPU-D4.
The CPU displays this process by lighting the LEDs on the front in a specific manner.
red
yellow
green
LED
Red
Yellow
Green
CPU-D4
on
one
two
repeated
Description of condition
The communication to the backplane is interrupted as
soon as the red LED is on
on
flashes
Writing into PROM 1. After completing, the green LED
flashes several times to recalculate the checksum
flashes
repeated
Writing into PROM 2. After completing, the green LED
flashes several times to recalculate the checksum
three
flashes
repeated
flashes
on
Writing into PROM 3. After completing, the green LED
flashes several times to recalculate the checkless
on
repeated
flashes
The green LED flashes during checksum recalcula-
tion of the programming data. Then the system restart
is invoked.
on
flashes
flash
fast
flashing
Erasing of the upgrade FLASH. This takes some 30
seconds.