Troubleshooting Leak Areas - Motorola APX 7000 Basic Service Manual

Disassembly/Reassembly Procedures: Ensuring Radio Submergibility
8. Watch for any continuous series of bubbles. A steady stream of bubbles indicates a sign of
leakage.
NOTE: Some accumulation of air may be entrapped in the main housing which may cause a false
diagnosis of a leak. Ensure there is a steady stream of bubbles before concluding there is a
leak.
9. Note all of the seal areas that show signs of leakage. Rotate the radio to view all sides to
pinpoint the problem(s) to one (or more) of the following areas:
• Seal Interfaces
• Speaker Assembly
• Battery Connector Seal
• Main Chassis, including the Control Top
• Back Chassis
10. Remove the radio from the water container and dry the radio thoroughly. Be especially careful
to dry the area around the Memory Door (33).
11. With the Radio in an upright position and Control Top up, remove the vacuum adapter by
squeezing the release latches, and pulling the adapter down and away from the radio.
12. Ensure the area around the Memory Door (33) opening is dry
13. Dry the remainder of the radio and remove the Grille Eliminator.
14. See "8.10.9. Troubleshooting Leak Areas" on page

8.10.9 Troubleshooting Leak Areas

Before repairing any leak, first read all of the steps within the applicable section. This will help to
eliminate unnecessary disassembly and reassembly of a radio with multiple leaks. Troubleshoot only
the faulty seal areas listed in
multiple leaks exist, in the order listed.
NOTES:All disassembly and reassembly methods can be found in
If in the field, water is found around the battery leads, the O-ring on the Battery should be
inspected and replaced if needed.
8.10.9.1 Seal Interfaces
• If leak occurs at one or more of the seal interfaces, disassembly of the component(s) and
inspection of the interfaces to determine if there is any damage. If no damage is observed,
re-assemble the radio as directed.
• If damage has occurred, replacement parts will be needed.
8.10.9.2 Speaker Module
• If leak occurs through the Microphone Membrane (24) or the Port Seal (25), replace these
items.
• If leak occurs elsewhere on the Speaker Module (B), the module will need to be replaced.
To avoid equipment damage, keep the area around the
memory card opening dry to prevent water from entering the
radio.
"8.10.8. Pressure Test (using NTN4265_)" on page 1:8-42
1:8-43.
Section 8.7. and
Sec 1: 8-43
and, when
Section 8.9.