41(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
Comment to Fault Codes
•
Fault 17 ... 26, 28, 29
CPU faults. Replacement of the CPU requires up loading of its data to PC first. If not
possible any more, down load the new CPU with the most recent up load file on
disk.
•
Fault 35, 36, 37
These faults may disappear automatically. The DTU sends a message to T&M and
T&M clears the fault status: L1 = AVE and L2 = AVE. However, the Service Error
message remains and the General Alarm as well. They must be cleared by
'
Clear Service'.
•
Fault 52
Maintenance personnel must verify if the subject is operational or not. It may occur
that a subject is given `AVE', but not working any more. If not working, reset the
subject and wait for new fault.
3.13
Fault reporting
Fault reporting, in accordance with current SAR-routines, shall be made to the support instance and the
warning log shall be enclosed either as printout or on diskette. To enable suitable action it is essential
that the correct information is provided describing in the best possible way how the fault was initiated
(sequences), under which circumstances (state) it occurred (traffic situation and time), how the fault re-
vealed itself and whether it was repeatable. Also state the PBX configuration, which can be obtained by
reading out the revision states (see point 4.15, "Translation and verification of revision states").
3.14
Update of board positions
Read the revision states of the hardware positions, RASC-menu Maintenance-HW/SW-RP.
Highlight the relevant row with the cursor and update the board. All programmable data is assigned de-
fault values. For extensions and trunks it is also necessary to assign all individuals a telephone number.
Normally it should be possible to load configuration data from RASC provided back-up exists.
3.15
Translation and verification of revision states
Ericsson identifies all products by means of a product number and revision state.
An ASB 150 02 exchange is built-up from several sub-products, each with its product number and revi-
sion state. Via RASC-menu Maintenance-HW/SW-CPU it is possible to read the product number and re-
vision state of the central program's PROM-set (LZY), PROM (RYS) and linkage unit (CXC).
Via RASC-menu Maintenance-HW/SW-RP it is possible to read the product number and revision state
of three different regional control programs per printed circuit board position. The same RASC-menu
also permits the device board's product number to be read, however the revision state cannot be read
directly although it can be determined with the help of the information in columns PCB and PS.
•
PCB contains a digit that indicates the R-state of the PBA's printed circuit board.
•
PS code contains a digit that can be related to a modification of the PBA that took place subsequent to
the manufacture of the PBA.
In the service advice is stated, for each board's (product number) revision state, the applicable PROM-
set (RYS), PS-code and PCB-code.
Note: that there also exist prerequisites stipulating which revision states for which products may
be combined.
