Icom IC-7610 Instruction Manual basic - Page 66
Troubleshooting, PROBLEM
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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. PROBLEM POSSIBLE CAUSE Power does not turn ON The power cable is not connected when POWER is pushed. properly. SOLUTION REF. Reconnect the DC power cable properly. p. 2-1 The external power supply is turned OFF. Turn ON the external power supply. p. 2-1 No sound is heard from the speaker. Sensitivity is too low, and only strong signals are heard. The DC power cable fuses or circuitry fuse are blown. The audio level is too low. The squelch is closed. If no sound is heard only from the Sub band, the Dualwatch function is OFF. Headphones are connected. The Mute function is ON. The external speaker cable is defective. The attenuator is activated. The squelch is closed. The antenna is defective or the coaxial cable is defective. You are using an antenna that is not suitable for the band you have selected. Find and repair the cause of the problem, - and then replace the damaged fuse with a new one. Rotate AF RF/SQL (inner) clockwise to obtain a suitable listening level. Rotate AF RF/SQL (outer) to the 12 o'clock position to open the squelch. Turn ON the Dualwatch function. p. 3-1 p. 3-7 p. 3-2 Disconnect the headphones. p. 13-1 Push AF RF/SQL to turn OFF the Mute function on whichever band is selected (Main or Sub). p. 1-1 Check the external speaker cable and - repair it. Turn OFF the attenuator in the Multi-function key group. Rotate AF RF/SQL (outer) to 12 o'clock position to open the squelch. Repair the problem and then reconnect the antenna. Connect an antenna suitable for the operating frequency. Hold down TUNER to tune the antenna. p. 4-1 p. 3-7 p. 2-2 p. 2-2 p. 7-2 No power output or the output power is too low. The operating frequency is outside the Set the frequency to a ham band. ham band. p. 3-4 The modulation input signal level is set Adjust the microphone gain in MIC GAIN. p. 3-9 too low. The microphone is bad, or the [MIC] connector is shorted or defective. The antenna SWR is more than 3:1. The antenna is not properly tuned. The transmit output power is set too low. Test the microphone and check the [MIC] p. 13-3 connector. Adjust the antenna for an SWR of less than 3:1. p. 7-3 Hold down TUNER for 1 second to tune p. 7-3 the antenna. Adjust the RF POWER in the Multifunction menu. p. 3-8 10-2