Troubleshooting; D Receiver Power; D Receiving - Icom IC-R9500 Instruction Manual

12
MAINTENANCE

■ Troubleshooting

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