7528%/(6+227,1*

7528%/(6+227,1*

The problems described in this table are commonly encountered operational malfunctions. These types of difficulties are usually caused by improper hook-up, accidental incorrect control settings, or operator error due to incomplete programming. These problems are usually not caused by circuit failure. Please review this table and the appropriate section(s) of this instruction manual before assuming your transceiver is defective.

Note: Placing a powered portable transceiver near this transceiver may cause noise in the transceiver.

Problem

 

Probable Cause

 

Corrective Action

Page

The transceiver will

1

DC power supply is OFF.

1

Switch the DC power supply ON.

10

not power up after

2

Faulty power cable.

2

Inspect the power cable. Confirm that the

1

connecting a 13.8 V

 

 

 

polarities are correct (Red: positive (+); Black;

 

DC power supply and

 

 

 

negative (–)).

1

pressing [

 

].

3

The power cable is not

3

Confirm the connections to the DC power

 

 

Nothing appears

 

connected securely.

 

supply are secure.

2

on the display and

4

The power cable fuse is

4

Look for the cause of the blown fuse. After

no receiver noise is

 

open.

 

inspecting and correcting any problems,

 

heard.

 

 

 

install a new fuse of the specified rating.

 

After switching

1

The input voltage is outside

1

Correct the input voltage or use a 12 ~ 16 V

1

the power ON, the

 

13.8 V DC ±15% (11.7 ~

 

battery.

 

transceiver does not

 

15.8 V DC)

 

 

 

function normally. For

2

The microprocessor has

2

Review “MICROPROCESSOR RESET”.

78

example, no digits or

 

malfunctioned.

 

After understanding what data will be lost, do

 

incorrect digits appear

 

 

 

a VFO Reset. If the problem remains, do a

 

on the display.

 

 

 

Full Reset.

 

 

 

 

 

 

 

After switching the

The current rating of the DC

Use a DC power supply that has a 20.5 A or

1

transceiver ON, the

power supply is too low.

higher current rating

 

transceiver refuses to

 

 

 

 

 

transmit.

 

 

 

 

 

 

 

 

 

 

 

 

 

The transceiver does

1

Procedures are not being

1

Review “WRITING CONVENTIONS

ii

not respond correctly

 

followed precisely.

 

FOLLOWED”.

 

after pressing key

2

The Frequency Lock

2

Press and hold [FINE (F.LOCK)] to switch

53

combinations or

 

function is ON.

 

the function OFF. The “ ” icon disappears.

 

turning controls per

3

The microprocessor and its

3

Review “MICROPROCESSOR RESET”.

78

instructions in this

 

memory need to be reset.

 

After understanding what data will be lost, do

 

manual.

 

 

 

a Partial Reset. If the problem remains, do a

 

 

 

 

 

 

 

Full Reset.

 

The frequency cannot

The Frequency Lock function

Press and hold [FINE (F.LOCK)] to switch the

53

be changed.

is ON.

function OFF. The “ ” icon disappears.

 

 

 

 

 

 

 

 

 

SSB audio quality is

1

The wrong operation mode

1

Select USB or LSB for the mode.

11

very poor; the high or

 

is selected for the receiver.

 

 

 

low audio frequencies

2

The IF filter is incorrectly

2

Turn the HI/SHIFT or LO/WIDTH control to

38

are absent.

 

set.

 

adjust the DSP filter width.

 

 

 

 

3

Noise Reduction 1 or 2 is

3

Press [NR (LEV)] until the NR function turns

39

 

 

 

 

ON.

 

OFF.

 

 

 

 

4

Beat Cancel 1 or 2 is ON.

4

Press [BC (A.NOTCH)] until the BC function

39

 

 

 

 

 

 

 

 

 

 

 

 

turns OFF.

 

 

 

 

 

 

 

 

 

No signals are

1

The SQL control is fully

1

Turn the SQL control counterclockwise.

12

received or receive

 

clockwise.

 

Press [ATT (RX ANT)] to switch the

 

sensitivity seems

2

The Attenuator is ON.

2

40

poor.

3

MIC [PTT] is pressed.

 

Attenuator is OFF.

 

 

 

 

 

 

3

Release MIC [PTT].

13

 

 

 

4

The IF filter bandwidth was

4

Review “DSP FILTERS”, and set the

38

 

 

 

 

incorrectly set.

 

controls accordingly.

 

 

 

 

5

The wrong antenna

5

Press and hold [PRE (ANT 1/2)] to select the

50

 

 

 

 

connector (ANT 1 or ANT

 

other antenna connector.

 

 

 

 

 

2) was selected.

 

Press [PRE (ANT 1/2)] to switch the function

 

 

 

 

6

The pre-amplifier is OFF.

6

40

 

 

 

 

 

 

ON.

 

 

 

 

7

An internal DSP error

7

Restart the transceiver by turning the power

—

 

 

 

 

occurs.

 

OFF and then back ON. If the problem

 

 

 

 

 

 

 

persists, consult Kenwood authorized

 

 

 

 

 

 

 

Service Center.

 

75