L7089 / L7189 6.1 Repair Introduction The L7189 is divided into 3 main sections when it comes to part replacability: The housings which contains the alert, speaker, mic, the main PCB which contains RF / Logic circuitry and the keypad interface and finally the display module which connects to the main PCB via a elastomer connector. If the RF / Logic board is required to be changed then a full service tranceiver should be ordered as there is no replacement PCB available. Also a personality transfer would be necessary.
6.2 Mechanical repairs Assembly replacement level troubleshooting and repair of the L7189 is limited to isolation and replacement of the main mechanical parts only (See Exploded parts diagram and associated parts list p19 & p20 ) 6.3 Basic Modular Troubleshooting The troubleshooting information in Table 2 shows some typical malfunction symptoms, and for the corresponding verification and repair procedures refer to the disassembly instructions located in the disassembly section of this manual. (Section 4). NOTE Defective Logic/RF assemblies must be replaced with pre-tested, pre-phased assemblies of 48 European Customer Services 27