Troubleshooting Charts - Motorola EX500 Basic Service Manual

Ensuring Radio Immersibility

3.15.13Troubleshooting Charts

Start
1. Remove Battery
2. Remove Universal
Connector Dustcover
3. Remove breathing vent label
and membrane
1. Attach vacuum hose to vacuum
pump
2. Ensure fitting seal is attached to
hose-to-chassis pump connector
3. Screw pump connector into chas-
sis's tapped hole
4. Attach vacuum hose to pump
connector
5. Place radio on flat surface
6. Operate pump (gauge = 6 in. Hg)
7. Observe gauge (about 1 min)
Gauge falls
more than
1 in. Hg
NO
1.Replace Breath-
ing Vent label and
Breathing Vent
Membrane
2. Radio approved
for immersibility
Figure 3-28 Troubleshooting Flow Chart for Vacuum Test
YES Run Pressure Test
3-31