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VS1 Troubleshooting Manual
Responding to alarms
Issue 10.0 2018-10-29
Page 1-31
Replacing a suspect PWB, power supply or fan
Maintenance philosophy
Maintenance on a VS1 transmitter consists of replacing any of the PWBs, power supplies or fans
identified in
Table 1.5 on page 1-32
.
Special Tools and Test Equipment
The following tools and test equipment are required to troubleshoot a VS1 transmitter.
– Digital multimeter
– Torque screwdriver, capable of torquing up to
1.2
N-m (
11
in.-lbs). Required for
installing securing hardware for PA PWB FETs and power supply connections.
– Soldering iron and desoldering tool
– VS1 station spares kit, if purchased (contains replacement PA PWBs, pre-amp/IPA
PWBs and cooling fans)
– Electrical schematics in Section 5 of this manual.
– Mechanical drawings in Section 6 of this manual.
Electrostatic Precautions
The VS1 transmitter contains semiconductor devices that are susceptible to damage from
electrostatic discharge. Be sure to follow the electrostatic precautions in
“Electrostatic protection” on
page 1-3
at all times.
Содержание VS1
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