Icom IC-2300H Instruction Manual - Page 63

13 MAINTENANCE ■■Troubleshooting 00 If your transceiver seems to be malfunctioning, please check the followings before sending it to the service center. PROBLEM POSSIBLE CAUSE SOLUTION REF. No power comes on. • Power connector has a poor contact. • Check the connector pins. p. iv • Polarity of the power connection is re- • Re-connect the power cable observing the - versed. proper polarity. Replace the fuse if blown. • Blown fuse. • Check the cause, repair it, then replace the - fuse following the instruction below. No sound comes from the • Volume is too low. • Rotate [VOL] clockwise. p. 8 speaker. • The audio mute function is activated. • Push any switch or key to deactivate it. p. 9 • Squelch is set too tight. • Set the squelch level to the threshold. p. 8 • A selective call or Squelch function is • Turn OFF the those functions. activated such as pocket beep or tone pp. 39, 41 1 squelch. 2 Sensitivity is low and only • Antenna feedline or the antenna con- • Check, and if necessary, replace the feedline p. v strong signals are audible. nector solder has a poor contact or is or re-solder the antenna connector. 3 shorted. 4 • T he S-meter Squelch or Squelch At- • S et [SQL] to between the 10 and 12 o'clock p. 8 tenuator function is activated. position. 5 • T urn OFF the S-meter squelch or squelch at- p. 9 6 tenuator. No direct contact possible • The other station is using tone squelch. • Set the appropriate tone frequency or code, p. 41 7 with other stations. and then turn ON the tone or DTCS squelch. 8 • The transceiver is set to duplex. • Select the simplex mode. Repeater cannot be ac- • Wrong frequency offset is programmed. • Correct the frequency offset. p. 12 p. 15 9 cessed. • W rong subaudible tone frequency is pro- • Correct the subaudible tone frequency. p. 13 10 Frequency cannot be set. grammed. • T he frequency lock function is activated. • Turn the function OFF. • Priority watch is paused on the watching • Cancel the watch. 11 p. 7 p. 35 12 frequency. Frequency cannot be set • T he frequency lock function is activated. • Turn the function OFF. 13 p. 7 using the microphone. • Priority watch is paused on the watching • Cancel the watch. p. 35 frequency. Some memory channels • T he input channel number has not yet • Rotate [DIAL] to check whether the channel - cannot be selected using been programmed. has been programmed or not. the microphone keypad. Scan does not start. • The squelch is open. • Set the squelch to the threshold point. p. 8 • O nly one memory channel is programmed • Program other memory channels or cancel pp. 17, or other channels are set as skip channels. the memory skip function in the desired chan- 32 nels. • Priority watch is activated. • Cancel the watch. p. 35 Transmission is automatically • Time-out timer is activated. cut off. • Turn OFF the timer. p. 48 Transmission continues even • One-touch PTT function is activated. • Turn OFF the function. when the PTT is released. p. 11 The function display shows • The CPU is malfunctioning. erroneous information. • Reset the CPU. p. 52 ■ Fuse replacement If the fuse is blown or the transceiver stops functioning, find the source of the problem if possible, repair the 20 A problem and then replace the damaged fuse with a new fuse rated one (FGB 20 A), as shown at right. 55