Icom IC-705 Basic Manual english - Page 84

10 MAINTENANCE Troubleshooting The following chart is designed to help you solve problems that are not equipment malfunctions. If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your nearest Icom Dealer or Service Center. LLSee the Advanced Manual for the problems when communicating through a repeater. LL"AM" indicates the PDF type Advanced Manual. Problem Power does not turn ON when is pushed. No sound is heard from the speaker. Sensitivity is too low, and only strong signals are heard. The transceiver automatically switches to transmit while receiving. No power output or the output power is too low. Possible Cause Solution The battery pack is exhausted. Charge the battery pack. Loose connection of a battery pack. Clean the battery pack terminals. The power cable is not connected Reconnect the DC power cable properly. properly. The external power supply is turned OFF. Turn ON the external power supply. A DC power cable fuse is blown. Find and repair the cause of the problem, and then replace the damaged fuse with a new one. The audio level is too low. Rotate clockwise to obtain a suitable listening level. The squelch is closed. Adjust the squelch level. The external speaker is connected. Disconnect the external speaker. The Bluetooth headset is connected. Disconnect the Bluetooth headset. In the FM mode, the Tone Squelch function is turned ON. Turn OFF the Tone Squelch function. The Attenuator is activated. Turn OFF the Attenuator. RF gain control is set too low. ("RFG" is displayed.) Set the RF gain higher until "RFG" just goes off. The antenna is defective, or the Repair the problem and then coaxial cable is defective. reconnect the antenna. You are using an antenna that is not suitable for the band you have selected. Connect an antenna suitable for the operating band. Connect an external antenna tuner, and tune the antenna. The squelch is closed. Adjust the squelch level. The VOX function is ON. Push to turn OFF the VOX function. The VOX gain is set too high. Adjust the VOX gain. The operating frequency is outside a ham band. Set the frequency to a ham band. The battery pack is exhausted. Charge the battery pack. The transmit output power is set Adjust the RF POWER in the too low. Multi-function menu. The modulation input signal level Adjust the MIC GAIN level in the is set too low. Multi-function menu. The output power is limited because of power amplifier protection. Stop transmitting, and then wait until the temperature of the power amplifier FET drops sufficiently. REF. p. 1-2 - p. 13-1 - p. 10-1 p. 3-1 p. 3-8 - AM AM p. 4-1 p. 3-8 - p. 13-2 p. 14-1 p. 3-8 AM p. 3-3 p. 1-2 p. 3-9 p. 3-10 AM 10-3 BASIC MANUAL