Motorola P7689, Service Manual, Page: 26 / 59

of 59 GSM Field Service Support 26
P7689 / P7789
4.1 Disassembly Introduction
The P7689 is held together by 5 screws. 2 of these screws are placed under the escutcheon, at the top of
the phone.Unlike most products in the past there is no flex that holds the display module, this is held in
place with 4 clips. Also note that unlike the P7389 instead of a sixth screw on the edge of the middle of
the unit there is now a hinge see
Page 6
Ensure that a properly grounded high impedance conductive wrist strap is used whilst performing any
tasks during the disassembly and assembly of the unit
Avoid stressing the plastics in any way to avoid damage to either the plastics or internal components.
4.2 Recommended Tools
The following tools are recommended for use during the assembly / disassembly of the P7689.
•
Anti-static Mat Kit - 0180386A82, includes:
Antistatic mat 66-80387A95
Ground Cord 66-80334B36
Wrist Band 42-80385A59
•
Plastic Bladed Tool SLN7223A
•
T6 Torx Driver
4.3 Disassembly Procedure
The following set of diagrams will demonstrate the correct sequence and action required to disassemble
the P7689
The use of the exploded diagram on pages
24 & 25 may be of some assistance for part recognition.
4.4 Assembly Procedure
Once the unit is disassembled and the repair is carried out, the unit must then be reassembled, this is
carried out in the exact reverse order as the disassembly. Although the housings are put back together
parrallel to each other not ‘hinged’ apart as in disassembly.
!! CAUTION !!
Many of the intergrated devices used in this equipment are vulnerable to damage from
electro-static charges. Ensure that adequate static protection is in place when handling,
shipping and servicing the internal components of this equipment.