ROAD KING RK5640, Owner'S Manual

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RF METER: Measures RF Output Power for transmitter. To use,
position the meter switch at S/RF . Press microphone PTT switch to read
transmitting power.
S-METER: Measures incoming signal strength. To use, position the
meter switch at S/RF . The meter swings to indicate signal strength.
i.e. S 3, S 5, S 7 . . .
USB PORT: 5V DC of power supply for your personal electronics.
Preventive Maintenance Preventive Maintenance
Every six months:
1. Check the Standing Wave Ratio (SWR).
2. Be sure all electrical connections are tight.
3. Inspect antenna coaxial cable for wear or breaks in shielding.
4. Be sure all screws and mounting hardware are tight.
Maintenance Maintenance
The RK5640 is designed to give you years of trouble-free service. There
are no user-serviceable parts inside. Except for the fuse in the DC power
cord, no maintenance is required.
To replace a blown fuse:
1. Press ends of the fuse holder together.
Twist to open. Carefully separate the
two
pieces.
2. Remove the fuse and inspect.
If blown, replace with the same
type
fuse.
! Use only the fuse specified for your RK5640. Failure to do so may void
your warranty.
Troubleshooting Troubleshooting
Problem Suggestion
Unit does not power up

Check the ignition key position.

Check power cord connections.

Check fuse.

Check vehicle electrical system.
No reception

Check microphone connection.

Set CB/PA switch to CB .

Check VOLUME and SQUELCH .

Check antenna.

Check antenna connection.

Set RF GAIN to MAX .
Poor reception

Check VOLUME and SQUELCH .

Be sure antenna SWR is normal.

Set RF GAIN to MAX .

Check and adjust DELTA TUNE .
No transmission

Set CB/PA switch to CB .

Check microphone connection.

Check MIC GAIN and adjust to MAX .
Low transmission

Be sure antenna SWR is normal.

Check MIC GAIN and adjust to MAX .
If you do not get satisfactory results after performing the above checks,
call the RoadKing Customer Service Center at 1-866-622-7979, 8:00 a.m.
to 5:00 p.m. CST, Monday through Friday.
Servicing Your Transceiver Servicing Your Transceiver
Technical information, diagrams, and charts are provided on request. It
is the user’s responsibility to see that this radio is operating at all times in
accordance with the FCC Citizens Radio Service regulations. We highly
recommend that you consult a qualified radio/telephone technician for
servicing and aligning this CB radio product. Please read the emergency
operation on page 1 of this Guide.
NOTE When ordering parts, be sure to specify the correct model number
and serial number of the unit.
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