Icom IC-7200 Instruction Manual - Page 90

Troubleshooting, Problem, Possible Cause, Solution, Power Supply, Receive, Rf/sql] - service manual

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12 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. POWER SUPPLY PROBLEM POSSIBLE CAUSE SOLUTION REF. Power does not come • DC power cable is improperly connected. • Reconnect the power cable correctly. p. 15 o n w h e n [ P W R ] i s • Fuse is blown. pushed. • Check for the cause, then replace the p. 83 fuse with a spare one. (Fuse is installed in the DC power cable) • Battery is exhausted if you are using a • Check the battery voltage. - 12 V battery as the power source. No sound comes from • Volume level is set too low. the speaker. • Rotate [AF] clockwise to obtain a suit- p. 29 able listening level. • The squelch level is closed. • Rotate [RF/SQL] to 12 o'clock position p. 30 to open the squelch. • The transceiver is in the transmit mode. • Release [PTT] on the microphone or - check the SEND line of an external unit, if connected. • An external speaker or headphones are • Check the external speaker or head- p. 14 connected. phone plug connection. Sensitivity is too low, • The antenna is not connected properly. • Reconnect to the antenna connector. - and only strong signals • The antenna feed line is cut or shorted. • Check the feed line and correct any im- - are audible. proper conditions. • The antenna is not properly tuned. • Push TUNER to manually tune the an- p. 67 tenna. • The attenuator function is activated. • Push P.AMP ATT to turn the function OFF. p. 45 • The antenna for another band is se- • Select an antenna suitable for the oper- p. 67 lected. ating frequency. Receive audio is dis- • The operating mode is not selected cor- • Select a suitable operating mode. torted. rectly. p. 29 Receive signal is dis- • The noise reduction is activated and the • Set the noise reduction level for maxi- p. 50 tor ted by strong sig- noise reduction level is too high. mum readability. nals. • Noise blanker function is activated. • Push NB to turn the function OFF. p. 49 • Preamp is activated. • Push P.AMP ATT to turn the function OFF. p. 45 The shift frequency of • The XFC (transmit frequency check • Turn the XFC (transmit frequency check p. 76 the RIT function cannot function) is turned ON. function) OFF in set mode. be added/subtracted. RECEIVE 85

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12
85
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.
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
POWER SUPPLY
Power does not come
on when [PWR] is
pushed.
•
DC power cable is improperly connected.
• Reconnect the power cable correctly.
p. 15
• Fuse is blown.
• Check for the cause, then replace the
fuse with a spare one.
(Fuse is installed in the DC power cable)
p. 83
• Battery is exhausted if you are using a
12 V battery as the power source.
• Check the battery voltage.
—
RECEIVE
No sound comes from
the speaker.
• Volume level is set too low.
• Rotate
[AF]
clockwise to obtain a suit-
able listening level.
p. 29
• The squelch level is closed.
• Rotate
[RF/SQL]
to 12 o’clock position
to open the squelch.
p. 30
• The transceiver is in the transmit mode.
• Release
[PTT]
on the microphone or
check the SEND line of an external unit,
if connected.
—
• An external speaker or headphones are
connected.
• Check the external speaker or head-
phone plug connection.
p. 14
Sensitivity is too low,
and only strong signals
are audible.
• The antenna is not connected properly.
• Reconnect to the antenna connector.
—
• The antenna feed line is cut or shorted.
• Check the feed line and correct any im-
proper conditions.
—
• The antenna is not properly tuned.
• Push
TUNER
to manually tune the an-
tenna.
p. 67
• The attenuator function is activated.
• Push
P.AMP
ATT
to turn the function OFF.
p. 45
• The antenna for another band is se-
lected.
• Select an antenna suitable for the oper-
ating frequency.
p. 67
Receive audio is dis-
torted.
• The operating mode is not selected cor-
rectly.
• Select a suitable operating mode.
p. 29
Receive signal is dis-
torted by strong sig-
nals.
• The noise reduction is activated and the
noise reduction level is too high.
• Set the noise reduction level for maxi-
mum readability.
p. 50
• Noise blanker function is activated.
• Push
NB
to turn the function OFF.
p. 49
• Preamp is activated.
• Push
P.AMP
ATT
to turn the function OFF.
p. 45
The shift frequency of
the RIT function cannot
be added/subtracted.
• The XFC (transmit frequency check
function) is turned ON.
• Turn the XFC (transmit frequency check
function) OFF in set mode.
p. 76