Troubleshooting; There Is No Power; There Is No Sound; There Is No Transmission - Yaesu FTM-300DR Advance Manual

Troubleshooting

Check the following before requesting repair services.

There is no power

• Is the external power supply connected correctly?
Connect the black wire to the negative (-) terminal and the red wire to the positive (+)
terminal.
• Is the voltage and current capacity of the external power supply sufficient?
Check the voltage and current capacity of the external power supply.
Voltage: 13.8 V
Current capacity: 20 A or higher
• Is the fuse blown?
Replace the fuse.

There is no sound

• Is the squelch level or setting too high?
Adjust the squelch level when receiving weak signals.
• Is the volume low?
Increase the volume by turning the VOL knob in the clockwise direction.
• Is the tone squelch or DCS set to on?
When the tone squelch or DCS is turned on, no sound will be heard until signals
containing the set tone frequency or DCS code corresponding to the set code are re-
ceived.
• Is the C4FM digital mode on?
When the AMS function is on, the sound is not output until the transceiver receives an
Analog FM mode signal. Also, when the DG-ID function is ON, and the DG-ID number
to other than "00", the sound is not output until the transceiver receives a signal with a
corresponding DG-ID number.
• Is the external speaker connected?
Properly connect a speaker with an impedance of 4 to 16 Ω.
• Is the Bluetooth
®
Turn OFF the power of the Bluetooth
using "OPTION" in the setup menu.

There is no transmission

• Is the PTT button pressed properly?
• Is the microphone connected correctly?
Plug the connector all the way into the MIC jack.
• Is the transmit frequency set to the amateur band?
Transmission outside the amateur band is not possible.
• Is the antenna or co-axial cable broken?
Replace the antenna or co-axial cable.
• Is the voltage of the external power supply normal?
When the voltage of the power supply drops during transmission, the transceiver may
not run at full performance. Use a stable DC power supply with a voltage of 13.8 V
and a current capacity of 15 A.

The keys or knobs do not operate

• Is the lock function activated?
Cancel the lock by briefly pressing the Power switch.
headset in use?
headset, or turn OFF the Bluetooth
®
64
function
®