Icom IC-7600 Instruction Manual - Page 151

11 MAINTENANCE ■ Troubleshooting The following chart is designed to help you correct problems which 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. D Transceiver power PROBLEM POSSIBLE CAUSE Power does not come on • Power cable is improperly connected. when the [POWER] switch is • Fuse is blown. pushed. SOLUTION REF. • Re-connect the DC power cable correctly. p. 20 • Check for the cause, then replace the fuse p. 149 with the spare one. (Fuses are installed in the DC power cable and the internal PA unit.) D Transmit and receive PROBLEM POSSIBLE CAUSE SOLUTION REF. No sounds from the speaker. • Volume level is too low. • The squelch is closed. • The transceiver is in transmit. • R otate the [AF] control clockwise to obtain a p. 34 suitable listening level. • R otate the [RF/SQL] control to 11 o'clock p. 33 position to open the squelch. • P ush [TRANSMIT] to receive or check the p. 36 SEND line of an external unit, if connected. Sensitivity is too low, and only • The antenna is not connected properly. strong signals are audible. • T he antenna for another band is selected. • The antenna is not properly tuned. • The attenuator is activated. • Re-connect to the antenna connector. - • S elect an antenna suitable for the operating p. 112 frequency. • P ush and hold [TUNER] for 1 sec. to manually p. 113 tune the antenna. • P ush [ATT] (MF4) several times to select p. 72 "ATT OFF." Received audio is unclear or • Wrong operating mode is selected. • Select a suitable operating mode. p. 32 distorted. • PBT function is activated. • Push and hold [PBT-CLR] for 1 sec. to reset p. 75 the function. • N oise blanker is turned ON when receiving a • Push [NB] to turn the noise blanker OFF. p. 81 strong signal. • Preamp is activated. • Push [P.AMP] (MF3) once or twice to turn the p. 72 function OFF. • T he noise reduction is activated and the [NR] • Set the [NR] control for maximum readability. p. 82 control is too far clockwise. The [ANT] switch does not • The antenna switch has not been activated. function • Set the antenna switch in set mode to "Auto" p. 130 or "Manual." Transmitting is impossible. • The operating frequency is not inside a ham • Set the frequency to be in a ham band. band. p. 28 Output power is too low. • T he [RF POWER] control is set too far coun- • Rotate the [RF POWER] control clockwise. p. 36 terclockwise • The drive gain level is set too high. • Set the drive gain level to a suitable level. p. 37 • T he [MIC GAIN] control is set too far counter- • Set the [MIC GAIN] control to a suitable posi- p. 36 clockwise tion. • The antenna for another band is selected. • Select an antenna suitable for the operating p. 112 frequency. • The antenna is not properly tuned. • Push and hold [TUNER] for 1 sec. to manually p. 113 tune the antenna. No contact can be made with • RIT or ∂TX function is activated. • Push [RIT] or [∂TX] to turn the function OFF. pgs. 73, another station. 87 • Split frequency function and/or dualwatch are/ • Push [SPLIT] and/or [DUALWATCH] to turn pgs. 79, is activated. the function OFF. 88 Transmit signal is unclear or • T he [MIC GAIN] control is set too far clock- • Set the [MIC GAIN] control to a suitable posi- p. 37 distorted. wise. tion. • The speech compressor function is activated. • Push [COMP] (MF7) to turn the function OFF. p. 86 Repeater cannot be accessed. • Split frequency function is not activated. • Push [SPLIT] to to turn the function ON • P rogrammed subaudible tone frequency is • Reset the frequency using set mode. wrong. p. 88 p. 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 144