Motorola EX500 Basic Service Manual page 50

3-32
Start
1. Remove vacuum hose from
pump connector
2. Attach pressure hose to
pump connector
1. Operate pressure pump
(pressure = 1 psig)
2. Immerse radio into a water-
filled container
Continuos
Series of
bubbles
NO
1. Dry the radio
2.Replace Breath-
ing Vent label and
Breathing Vent
Membrane
3. Radio approved
for immersibility
1. Dry the radio
2. Replace Breathing Vent
label and Breathing Vent
Membrane
Troubleshooting Flow Chart for Pressure Test & Leakage Areas
YES
Bubbles from
Front
Housing
NO
Bubbles from
Chassis
NO
Bubbles from
NO
Battery Con-
tact Seal
1. Remove Knobs
and Antenna
NO
Bubbles from
Lens*/Univer-
YES
sal Connector/
chassis/
Housing Inter-
face/ PTT
* Only for EX560•XLS
1. Dry the radio
YES
2. Replace Main Seal O-
Ring, Breathing Vent label
and Breathing Vent Mem-
brane
1. Dry the radio
2. Replace Battery Contact
YES
Seal, Main Seal O-Ring,
Breathing Vent label and
Breathing Vent Membrane
Ensuring Radio Immersibility
1. Dry the radio
YES
2. Replace Housing, Main
Seal O-Ring, Breathing
Vent label and Breathing
Vent Membrane