Icom IC-R9500 Instruction Manual - Page 156

12 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 you nearest Icom Dealer or Service Center. D Receiver power PROBLEM POSSIBLE CAUSE Power does not come on • Power cable is improperly connected. when the [POWER] switch • DC-DC power plug is improperly connected. is pushed. • The internal power supply is turned OFF. • The fuse is blown. SOLUTION • Re-connect the AC power cable correctly. • Re-connect the DC-DC power plug correctly. • Turn the internal power supply ON. • Check for the cause, then replace the fuse. REF. - - p. 3-2 p.12-8 D Receiving PROBLEM POSSIBLE CAUSE SOLUTION REF. No sounds come out from • Volume level is too low. the speaker. • The squelch is closed. • The RF gain is too decreases sensitivity. • Rotate [AF] clockwise to obtain a suitable lis- p. 3-8 tening level. • Turn [SQL] to 10 o'clock position to open the p. 3-8 squelch. • Rotate [RF GAIN] clockwise to obtain an p. 3-8 enough sensitivity. Sensitivity is too low, and • The antenna is not connected properly. only strong signals are • The attenuator is activated. audible. • A different antenna for HF band is selected. • Re-connect the antenna. - • Push [ATT] several times to select "ATT OFF." p. 5-9 • Push [ANT] several times to select the correct p. 9-3 antenna for the HF band. Received audio is unclear • Wrong operating mode is selected. • Select a suitable operating mode. p. 3-7 or distorted. • PBT function is activated. • Push [PBT CLR] for 1 sec. to reset the function. p. 5-11 • Noise blanker is turned ON when receiving a • Push [NB] to turn the noise blanker OFF. p. 5-15 strong signal. • Preamp is activated. • Push [P.AMP] once or twice to turn the function p. 5-9 OFF. • The noise reduction is activated and the [NR] • Set the [NR] control for maximum readability. p. 5-16 control is too far clockwise. The [ANT] switch does not • The selected frequency is above 30 MHz. function • Select a frequency below 30 MHz. pgs. 3-4, 9-3 [AFC] cannot be turned • The operating mode is not set in FM or WFM • Select FM or WFM mode to activate AFC. ON. mode. pgs. 3-7, 5-17 [AUTOTUNE](AFC) can- • The operating mode is set in FM, WFM, FSK • Select AM, SSB or CW mode to activate AUTO- pgs. 3-7, not be turned ON. or P25 mode. TUNE. 5-17 [VSC] cannot be turned • The operating mode is set in CW, FSK or P25 • Select FM, WFM, AM or SSB mode to activate pgs. 3-7, ON. mode. VSC. 8-3 [ANF] cannot be turned • The operating mode is set in CW, FSK or P25 • Select FM, WFM, AM or SSB mode to activate pgs. 3-7, ON. mode. ANF. 5-16 [ N O T C H 1 ] / [ N O T C H 2 ] • The operating mode is set in FM, WFM or P25 • Select AM, SSB, CW and FSK mode to activate pgs. 3-7, cannot be turned ON. mode. MN1/MN2. 5-16 The filter width cannot be • The operating mode is set in WFM or P25 • Select FM, AM, SSB, CW and FSK mode. changed. mode. pgs. 3-7, 5-12 A synthesized voice is not • "Speech Level" in the level set mode is too low • Set "Speech Level" to enough level in the set p. 11-6 emitted when pushing mode. [SPCH]. • "SPEECH Mix" in the others set mode is OFF. • Set "SPEECH Mix" to All or Operation in the set p. 11-11 mode. No sounds come out or • Either the audio tone controls is too decreas- • Rotate [BASS] or [TREBLE] clockwise to obtain p. 3-9 output level is too low from es position an enough audio output. [S/P DIF OUT], [ACC], [LINE OUT], [REC OUT]. 12-2