D R A F T
D R A F T
D R A F T
Garex Twomobile
11
Handbook
SECTION IV
SERVICING & TESTING
Do not attempt realignment without adequate test equipment. Remember that
most faults do not necessitate realignments. The majority of faults can be
located readily with simple test equipment and a logical approach.
General Checks
Remove the case as described in Section III and carry out a physical
inspection for obvious defects.
Check the supply voltage at the input to the equipment.
Check the antenna and connections.
Receiver
Locate the positive and negative supply inputs to each Rx board and check
that the appropriate voltage is present. Typical voltages at various points
are shown on the circuit diagrams. For the detailed alignment procedure,
refer to the receiver alignment chart.
Transmitter
Typical voltages at various points are shown on the circuit diagram.
Voltages are –ve referenced to ve.
The transmitter should maintain its performance over a bandwidth of about
500kHz. Some adjustments to the tuning of the RF stages will be necessary
when changing to a different segment of the 2 metre band. Refer to the
transmitter alignment chart for details.
Summary of Contents for TWOMOBILE MK II
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