Section 7 Troubleshooting - Icom IC-R7000 Instruction Manual

· ..
SE~TION
7· TROUBlESHOOllNG ·
PROBLEM
1 . Power does not come on
when the POWER SWITCH
is pressed.
2. No sound comes from the
speaker.
3. Sensitivity is low and only
strong signals are audible.
4. Only unintelligible voices
can be heard during SSB
reception.
5.
Voice distortion on FM
stations and TV broadcasts.
6.
Frequency does not change
by rotating the TUNING
CONTROL.
7. Memory channel does not
change when [MEMORY
CH] CONTROL is turned.
8. Scanning does not operate
when a SCAN START/
STOP SWITCH is pressed.
9.
No voice output occurs
when [SPEECH] SWITCH
is pressed.
Your IC-R7000 has been carefully adjusted at the factory prior to
shipping. The chart below is provided to help you correct problems
that are not equipment malfunctions.
If you are unable to locate the trouble or correct the fault, please
contact your dealer or the nearest ICOM Service Center.
POSSIBLE CAUSE SOLUTION
• Power cable is improperly connected. • Carefully ~econnect power cable.
• Power supply connection is impaired.
• Inspect connection pins.
• Power supply is not connected. • Reconnect.
• Blown fuse.
• Check for the cause, then replace the
- fuse with a spare one.
• AF GAIN CONTROL is turned com- • Rotate the control clockwise to a suitable
pletely counterclockwise. level.
• SQUELCH CONTROL is operating. • Turn the SQUELCH CONTROL com-
pletely counterclockwise.
• Connection cable to the external • Inspect and repair connection.
speaker is broken.
• Headphones are connected to the • Unplug the headphones.
PHONES JACK.
.
• Attenuator is operating. • Turn the [ATT] SWITCH off.
• Antenna is defective or the coaxial • Inspect and repair antenna and coaxial
cable
has
an
electrical short or cable.
broken wire.
• Receive frequency and the receivable • Change antennas.
frequency range of the antenna are
not compatible.
• Receiving the wrong sideband. • Select the opposite sideband (USB or
LSB).
• Mode displayed is not "FM". • Press the [ FM] MODE SWITCH.
•Selector switch for FM (2)- FM (1)
• Set at FM (2).
on rear panel is in FM
(1)
position.
• LOCK SWITCH is engaged.
I
• Disengage lock by pressing LOCK
SWITCH.
• LOCK SWITCH is engaged. • Disengage lock
by pressing
LOCK
SWITCH.
• Proper scan setting has not been
• See SECTION
5-5
for instructions.
programmed. I
• Voice synthesizer unit is not incorpo-
• Install optional IC-EX31 0 Voice Synthe-
rated in the receiver. sizer unit.
-31-
I