Icom IC-7100 Advanced Instructions - Page 355

Previous view 19 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. DDTransceiver power PROBLEM POSSIBLE CAUSE SOLUTION REF. Power does not turn ON • T he power cable is improperly connect- • Reconnect the DC power cable correctly. Sec. 2 when [PWR] is pushed. ed. • A fuse is blown. • Correct the cause, then replace the fuse Sec. 19 with an equivalent fuse. (Fuses are in- stalled in the DC power cable and in the internal PA unit.) • Power output voltage is not correct. • Use power supply with 13.8 V DC output. Sec. 2 DDTransmit and receive PROBLEM POSSIBLE CAUSE SOLUTION REF. No sound from the speak- • The audio volume level is too low. • R otate the [AF] control clockwise to ob- Sec. 3 er. tain a suitable listening level. • The squelch is closed. • R otate the [RF/SQL] control to 12 o'clock Sec. 3 position to open the squelch. • The tone squelch is ON in the FM mode. • T urn OFF the Tone squelch. Sec. 4 • T he external speaker is not connected. • Correct the cause, then correct. Sec. 2 • A head-phone or external speaker is con- • Disconnect the head-phone or external Sec. 2 nected to [PHONES/SP]. speaker. Sensitivity is too low, and • The antenna is not properly connected. • Reconnect to the antenna connector. Sec. 2 only strong signals can be • The attenuator is turned ON. • P ush P.AMP ATT to turn OFF the attenua- Sec. 5 heard. • The RF gain sensitivity is set to minimum. tor. • R otate the [RF/SQL] control to 12 o'clock Sec. 3 • The squelch is closed. position. • R otate the [RF/SQL] control to adjust the Sec. 3 • T he antenna for another band is select- squelch level. ed. • S elect an antenna suitable for the operat- Sec. 2 ing frequency. Received audio in the SSB • The side band setting is incorrect between • Toggle between USB and LSB in the Sec. 3 mode is unclear or distort- USB and LSB. Mode selection screen. ed. • The PBT function is activated. • Push [M-CH], and then hold down [CLR] Sec. 5 for 1 second to clear the PBT function. No contact can be made • The RIT function is turned ON. • Push RIT to turn OFF the function. Sec. 5 with another station. • The Split function and/or Duplex function • Push [SPLIT] (in the "M1" screen) or Sec. 6 are turned ON. [DUP] (in the "M2" screen) to turn OFF the function. Output power is too low. • An amateur band is not selected. • Select an amateur band. Sec. 3 • TX power is set too low. • Push MIC/RF PWR , and then rotate the Sec. 3 [BANK] control clockwise. • The mic gain is set too low. (SSB) • Push MIC/RF PWR , and then rotate the [M- Sec. 3 CH] control clockwise. • T he antenna is bad, or the coaxial cable is • Correct the cause. Sec. 2 shorted or open. • T he microphone is bad, or the [MIC] con- • Correct the cause. Sec. 2 nector is shorted. • The antenna SWR is more than 3. • Set the antenna SWR less than 3. Sec. 6 Transmit signal is unclear • The MIC gain is adjusted too high. • Rotate [M-CH] so that the ALC meter Sec. 3 or distorted. reading stays within the ALC zone. • T he Speech compressor level is adjusted • Rotate the Dial so that the COMP me- Sec. 6 too high. ter reading stays within the COMP level zone. 19-12