5-4. IN CASE OF DIFFICULTY
The problems described in this table are failures caused in general by improper operation or connection of the re- ceiver, not by defective components. Examine and check
according to the following table. If the problem persists, contact an authorized agent or service station.
Symptom
Indicators do not light and no receiver noise is heard when the POWER switch is turned on.
Nothing is displayed or wrong digits are displayed when the POWER switch is turned on.
When you press the POWER switch, "1 5 MHz AM" is displayed ... or the receive sensitivity is low.
No signal is received even when the antenna is connected or the receiving sensitivity is low.
An antenna is connected, but no signal is received and the
The
Probable cause
1.Bad power cable or connections.
2.Blown power supply fuse.
3.The TIMERswitch is ON.
The microprocessor may malfunction if the input voltage is too low.
The backup battery is discharged.
1.SQL control fully clockwise.
2.SELECTIVITY switch is set to "N".
3.The RF ATT switch is ON.
4.A wrong antenna number has been assigned.
RF control is too low, decreasing the high frequency circuit gain.
1.Low AC line voltage.
2.RF gain control closed.
Corrective action
1.Check cables and connections.
2.Contact the dealer.
3.Turn the TIMER switch OFF .
1.Use a
Use a 1 2V to 1 6V battery.
2.Turn on the POWER switch while depressing the A = B key, and then release the A = B key.
Turn the POWER switch off with the power cable plugged into an AC outlet, to allow the backup battery to charge.
1.Turn the SQL control counterclock- wise.
2.Ensure the SELECTIVITY switch is set to "AUTO".
3.Set the RF ATT switch to zero posi- tion RF ATT switch to zero.
4.Select the correct antenna.
Turn the RF gain control fully clock- wise.
1.Use a
Use a 1 2V to 1 6V battery.
2.Turn the RF gain control fully clock- wise.
Signal is received, but no sound is
heard.
SSB received signal is extremely high cut or low cut.
Frequency is not changed by pressing the 1 MHz (UP/DOWN) key or turning the TUNING knob.
Program scan fails.
Memory scan fails.
Display goes out with VFO/M ON.
The TIMER does not work.
MODE key position is incorrect.
IF SHIFT control is wrong adjusted.
F. LOCK key is ON.
1.No frequency is stored in channels 8 and 9 of the displayed channel group.
2.Both HF and VHF frequencies are stored in channels 8 and 9 of the displayed channel group.
1.Nothing is stored in memory.
2.Nothing is stored in the selected memory scan group.
When nothing is stored in the memory channel, a channel is displayed and blanked with only the decimal point displayed.
1.The on time or off time is not set.
2.The TIME SET switch is ON.
Change the MODE key to the correct mode.
Set the control to the center (click po- sition).
Set F. LOCK key to OFF.
1.Store the frequencies.
2.Store either HF or VHF frequencies, not both.
Store the frequency.
1.Program the on time or off time.
2.Turn the TIME SET switch OFF.
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