Motorola P7689, Service Manual, Page: 42 / 59

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P7689 / P7789
6.1 Repair Introduction
The P7689 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 P7689 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