Motorola MTR2000 T5544 Instruction / Field Service Manual page 129

PA – Inner-facing Side
DC Power Connector
68P81096E17-E
09/30/05
5. If display OK, set up R2001 or R2600 to display modulation. Using
the microphone, push the PTT button and speak into the micro-
phone. Verify that the display shows an audio signal.
• If proper display is not obtained, suspect faulty SCM or Exciter
Module.
6. Set the R2001 or R2600 for GEN/MON MTR. Press the PTT button
and speak loudly into the microphone to cause maximum deviation.
Display should read:
±5 kHz maximum for a 25 or 30 kHz system.
-
±4 kHz maximum for a 20 kHz system.
-
±2.5 kHz maximum for a 12.5 kHz system.
-
• If proper display is not obtained, suspect faulty SCM or Exciter
Module.
7. This completes the Verifying Transmitter Circuitry test procedure. If
all displays and measurements are correct, the transmitter circuitry
may be considered to be operating properly. Remove test equipment,
restore the station to normal service, and return to the troubleshoot-
ing flow chart to resume troubleshooting sequence.
Station Reset
In the event that the station repeatedly resets:
1. Disconnect dc power to PA and connect a load to the PA Module.
2. Power on the station.
3. If the station is not resetting, there is a problem with the PA.
If the station is resetting, there is a problem with another module in
the station.
4. Reconnect dc power to PA.
5. If the station is resetting, there is a problem with the PA.
6. If the station does not reset, key the station.
7. If the station is resetting, there is problem with the PA.
If the station is not resetting, there is a problem with the antenna, feed
line, or peripherals.
Troubleshooting
15