Kenwood TS-670 Instruction Manual page 32

==b5. TROUBLESHOOTING
agent or service station.
TRANSMISSION
SYMPTOM
CAUSE
REMEDY
No output in SSB (RF and ALC
meters do not deflect.)
1. The MIC plug is incompletely inserted.
2. Low microphone gain.
. Insert the MIC plug fully.
. Increase the microphone gain.
No output in CW
1. The KEY plug is incompletely inserted or
KEY contact failure.
2. CAR control is too low.
. Insert the KEY plug fully.
- Turn the CAR control clockwise.
Nalya
RECEPTION
SYMPTOM CAUSE
REMEDY
Indicators do not light and no
receiver noise is heard when the
POWER switch is turned on.
1. Poor power cord connection with the con-
netor.
2. Blown power supply fuse.
3. PS-20 is OFF.
. Make correct connection.
. Replace the fuse. (If the new fuse blows
again, the set is defective.)
3. Set PS-20 to ON.
N=
Nothing is displayed or wrong digits
are displayed when the POWER
switch is turned on.
The microprocessor malfunctions. This occurs
when the battery is old or the supply voltage
drops extremely on the occasion of consum-
ing large current.
. Adjust the supply voltage to nominal
voltage +10V with use of a boosting
transformer (in the case of using PS-20).
Use a 12 — 16 V battery.
2. Turn the POWER switch on again.
No signal is received even when the
antenna is connected.
. Squelch control works.
. Microphone PTT switch is in the transmit
position, and the TS-670 is in the transmit
mode.
ror
1. Turn the squelch control
wise.
2. Set the PTT switch to the receive position.
counterclock-
An antenna is connected, but no
signal is received and the S-meter
fully deflects.
RF control is too low, decreasing the high fre-
quency circuit gain.
Turn the RF control fully clockwise.
The S-meter deflects and stays at a
certain position even with no signal.
1. Too low supply voltage.
2. RF control is too low.
1. Adjust the supply voltage to nominal
voltage +10V with use of a boosting
transformer (in the case of using PS-20).
Use a 12 — 16 V battery.
2. Turn the RF control fully clockwise.
Signal is received, but no sound is
heard.
MODE switch position is incorrect.
}
Change the MODE switch position.
SSB received signal is extremely
high cut or low cut.
IF shift control is wrongly adjusted.
Set the control to the center (click position).
Frequency is not changed by press-
ing the BAND switch or turning the
tuning control.
1. LOCK switch is ON.
2. VFO/M is ON.
1. Set LOCK switch to OFF.
2. Set VFO/M to OFF.
Scan fails.
1. HOLD switch is ON.
2. Memory is empty.
3. Frequencies entered in channels 8 and 9
exceed the limit.
Set HOLD switch to OFF.
Store data in the memory.
Re-enter the frequencies within the limit.
ON
Display goes out with VFO/M ON.
When nothing is stored in the memory chan-
nel, a channel is displayed and blanked with
only the decimal point displayed.
Store the frequency.
30