10(42)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1999-07-15
F
1545-ASB 150 02 Uen
FAULT TRACING DESCRIPTION
Faktaansvarig - Subject responsible
2.2
Indication of LEDs on board(s)
The front edge of all PBAs in the PBX are equipped with LEDs of different colours. Their purpose and
signalling cadence is described in the following. On system restart all LEDs are ON and go OFF during
start-up sequence. Depending on their function the LEDs are in different positions on the front edge.
CPU-D_
RPs on BTU-_,ELU-_, IC-CU etc.
Connection field 2
Connection field 4
Connection field 6
1st pair (generally RP)
LEDs controlled
LEDs controlled
by CP
Yellow LED flashes in different ca-
dences during start sequence and is
off during normal operating.
by relevant RP
cold start strap
Position for
2nd pair (e.g. DSPs
3rd pair
4th pair
Not mounted
on all boards
on BTU-D or REG)
Red LED is lit if CP is restarted
The LED can be ON for up to 2 min. during
upgrading or only 1 to 5 seconds during
start-up conditions.
Go to: c
Yellow LED flashes in different cadences
during start sequence and is off during
normal operation go to
Green LED that is directly connected to
alarm log e.g.if warnings occur these war-
ning codes are stored in the warning log
and this LED is turned on go to
Red LED is ON if cold start strap
(located below) is inserted go to
Red LED lights up during power on se-
quence
. Check if PROMS are
placed and if no yellow and green LEDs
flashes. For LED flashing procedures
during upgrading refer to
Go to: a
on CPU-D
cold start strap
Position for
on CPU-D_
Yellow and green LEDs indicating start,
faults or active ports. During remote up-
grading the number of flashes indicate
which FLASH program memory is being
re-written go to
For LED flashing procedures during up-
grading refer to
For LEDs on Integrated Cordless boards
go to
