Icom IC-701 Instruction Manual page 42

SECTION 8 TROUBLE SHOOTING
1. Power does not come on when | Power cable is improperly connected.
the switch is pushed.
Carefully reconnect power cable.
Power cord is connected with the polarity
reversed.
Disconnect the power cord, replace the blown fuse,
then reconnect the power cord observing proper
polarity.
Blown fuse. Check for the cause, then replace the fuse with a
spare one.
If using an IC-701PS, also check it's fuse.
1C-701PS MAIN switch is in the OFF
position.
Place MAIN switch in ON position.
2. The frequency display on the | The Band Select switch
LED's keeps changing bands and | position.
a clicking noise is heard.
is in the EXT. | Set the Band Select switch to the desired band.
AF GAIN Control
counterclockwise.
3. No sound comes from the knob
speaker.
is completely | Turn the knob clockwise to a suitable level.
The unit is in the transmit mode, either by | Put the unit in the receive mode.
the T/R switch or the PTT switch on the
microphone.
The external speaker cable is connected to
the unit but not to the external speaker
jack on the power supply.
Connect the cable to the speaker jack on the
iC-701PS.
The internal speaker cable is not connected.
A headphone is connected to the PHONES
jack.
Connect the speaker connection.
Unplug the headphone.
4. Sensitivity is low and only strong
signals are audible.
RF GAIN Control knob is turned fully
Counterclockwise.
Turn the RF Gain control knob fully clockwise.
The antenna feed line is cut or shorted. Check the feed line and correct any improper
condition.
RF GAIN Control
counter clockwise.
5. During receive, the "'S'' meter is
higher than the ''0'' position
even when there is no signal.
6. Only incomprehensible voices are | Receiving the wrong sideband. Set the MODE switch to the sideband other than
heard during SSB reception. the one you are using, either USB or LSB.
7. The tone of the received signal | Maladjustment of the P.B. Tune control. Set the P.B. Tune control knob to the center
is very high or low pitched. (12 o'clock) position.
8. No output power or low output | The COMP Control knob is set too low | Turn the Speech Processor OFF, or turn the COMP
power. when the Speech Processor is ON. Control knob clockwise to obtain the proper
output power.
Turn the MIC GAIN Control clockwise to the
center (12 o'clock) position.
Set the MODE switch to the SSB (USB or LSB)
position.
knob is turned fully | Turn the knob fully clockwise.
MIC GAIN setting is too low.
When SSB is desired, but the MODE switch
is in the CW or CW-N position.
PTT switch is not functioning due to
improper connection of the mic connector.
Using a screw driver, slightly spread the prongs of
the mic connector for better contact.
The antenna feed line is cut or shorted. Check the antenna feed line and correct any
improper connection.
9. The Po meter does not function
when signals are transmitted.
The SWR switch is set at the SWR position. Open the Access Cover and move the SWR switch
to the SWR SET position.
Open the Access Cover and turn the SWR SET
contro! clockwise while watching the Po meter,
until the needle moves properly.
SWR SET control is not set at the proper
level.
The VFO Select is in the RA-TB or TA-RB
position.
10. The receive mode_ functions
properly and your signals are
transmitted, but you are unable
to make contact with another
station.
Set the VFO Select switch to the A or B position.
The receive frequency is offset from the
transmit frequency by the RIT control.
Turn OFF the RIT, or set the RIT control knob to
the center (12 o'clockw) position.
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