Motorola MTM700, Detailed Service Manual

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TROUBLESHOOTING MTM700 Portable Radio / Detailed Service Manual 9 - 3
For RF levels, which should be measured with a 50 Ohm RF probe, you can use the following
circuit.
Figure 3 Example for 50 Ohm RF Probe
Troubleshooting Flowcharts
Use the following flowcharts to troubleshoot the radio.
These flowcharts contain procedures which use the TETRA COM SW application to set the
radio into the appropriate test modes for troubleshooting radios having digital, receiver,
transmitter, or frequency generation failures.
The radio performs most of the used TETRA COM commands only in test mode. If not in
test mode, it ignores these commands.
To enter test mode you must enter the command "TEST_ENTER" in TETRA COM.
After about 10 seconds the TETRA COM screen must show the message "Radio HW is
READY" to indicate that the radio has entered test mode.
Once in test mode, you don't have to use this command again until the test mode is termi-
nated or the radio performed a reset.
1000pF
1K
RF + DC Signal
To 50 Ohm Input
To Multimeter
ZWG0130981-O