Kenwood TS-870S Maintenance, The LO/WIDTH control or HI/SHIFT, Press LSB/USB, CW/-R, FSK/-R, or

12 MAINTENANCE

No signals are received	1	The SQL control is fully clockwise.	1	Turn the SQL control counterclockwise.	19
or receive sensitivity	2	The Attenuator function is ON.	2	Press ATT [DOWN] repeatedly until the	53
seems poor.				Attenuator function is OFF.
	3	The transceiver is in the transmit mode	3	Press [SEND] to return to the receive	23
		since the [SEND] switch was pressed.		mode.
	4	The Microphone PTT switch is pressed.	4	Release the Microphone PTT switch.	23
	5	The LO/WIDTH control or HI/SHIFT	5	Review the sections "SLOPE TUNING",	51,52
		control is set incorrectly.		"IF SHIFT", and "CHANGING RECEIVE
				BANDWIDTH". Set the controls correctly.
	6	The wrong antenna connector is	6	Press [ANT] to select the other antenna	63
		selected.		connector.
	7	If using a separate receiver that is	7	Switch ON Menu No. 53 (EXT RX).	2
		connected to the EXT RX ANT
		connector, the connector is not enabled.
	8	The Advanced Intercept Point function is	8	Press [AIP] to switch OFF the function.	53
		ON.
No signals are received	The RF gain control is set too low.		Turn the RF gain control fully clockwise.		19
or receive sensitivity
seems poor; S-meter is
reading full scale.
Received signals are	The wrong modulation mode is selected.		Press [LSB/USB], [CW/-R],[FSK/-R], or		20
totally unintelligible.			[FM/AM] to select the correct modulation
			mode.
Memory Scan wonÕt start	1	The SQL control is not set correctly.	1	Adjust the SQL control to just eliminate	19
scanning.				background noise.
	2	You have fewer than two memory	2	Unlock some memory channels.	62
		channels that are not locked out.
	3	You have fewer than two memory	3	Store data in more memory channels.	54
		channels programmed.
Memory Scan will not	With Group Scan selected, the channel you		Select All-channel Scan by switching OFF		61, 62
	want to scan is in a different group.		Menu No. 66 (GRP.SCAN), or change to the
scan one of the stored
channels; the desired			group that contains the memory channel that
			you want to scan. Group changes are done
channel is NOT locked
			by pressing Mic [UP] or [DWN].
out.
Program Scan wonÕt	The Start and End frequencies are		Store different Start and End frequencies.		58, 60
start scanning.	identical.
Memory Scan never	Busy Frequency Stop is not activated.		Switch ON Busy Frequency Stop via Menu		61
stops scanning even			No. 67 (BSY.STOP).
when a station is found.
Program Scan never	This is normal operation.		Review the Scan Hold function if you want to		60
stops scanning even			stop scanning when you hear a station while
when a station is found.			using Program Scan.
You cannot transmit	1	The microphone plug is not inserted	1	Turn OFF the power, ensure the	4
even though you press		completely in the Front Panel connector.		microphone connector on the Front Panel
[PTT], or transmissions				has no foreign objects in it, then plug in
result in no contacts.				the microphone connector. Secure the
				connector with the locking ring.
	2	The Transmit Inhibit function is ON.	2	Switch Menu No. 27 (TX INH) to OFF.	45
	3	You have selected CW or FSK instead	3	Press [LSB/USB] or [FM/AM] to select a	20
		of a voice mode.		voice mode.
	4	The filter for Digital operation is	4	Switch Menu No. 19 (PKT.FIL) to OFF.	25
		selected.
	5	The wrong antenna connector (ANT 1/2)	5	Press [ANT] to select the other antenna	63
		is selected.		connector.
Attempting to transmit	1	The antenna is not connected correctly.	1	Check the antenna connection. Correct	2
results in the "HELLO"				as necessary.
message appearing and	2	The antenna is not matched correctly	2	Reduce the SWR of the antenna system.	2
the Receive mode being		with the transceiver.
restored.
	3	The input voltage is outside 13.8 V DC	3	Correct the input voltage.	3
		±15% (11.7 to 15.8 V DC).
	4	An inappropriate DC power cable is	4	Use the provided or an optional DC power	3
		being used.		cable.

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