BusinessPhone Communication Platform 4.0
Fault Tracing ASB 150 02 > Procedures

## 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 revision state. Via RASC-menu MAINTENANCE-HW/SW-CPU it is possible to read the product number and revision 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

There also exist prerequisites stipulating which revision states for which products may be combined.

Revision: F © Ericsson Enterprise 2003