Kenwood 144, 440 MHz TH-D7A Troubleshooting, Problem, Probable Cause, Corrective Action

TROUBLESHOOTING

1The problems described in this table are commonly encountered operational malfunctions and are usually not caused

2	by circuit failure.
3
	Problem	Probable Cause		Corrective Action	Ref. Page
4
	Nothing appears on the	1 Low supply voltage	1 Recharge the battery pack or replace		2, 4
5	display when the			the batteries.
6	transceiver is switched	2 If using the optional DC cable:	2
7	ON, or the display is	a) Bad power cable or connections		a) Check the power cable and
	blinking ON and OFF.				5
8				connections, then correct/replace
				as necessary.
9
		b) Open (blown) power supply fuse		b) Investigate the cause for the	—
10				open fuse. Replace the fuse.
11	Most keys and the	1 Transceiver Lock is ON (Key icon is	1	Press [F] (1 s) to switch OFF	50
12	Tuning control do not	visible).		Transceiver Lock.
	function.	2 The transceiver is in Channel	2	Press [A/B]+ POWER ON to exit	31
13
		Display mode.		Channel Display mode.
14
		3 Tone Alert is ON (Bell icon is	3 Press [F], [ENT] to switch OFF Tone		47
15		visible).		Alert.
16		4 Packet data was being transmitted	4 Operate the keys or the Tuning		—
		using the data band.		control after transmitting of packet
17
				data is completed.
18	You cannot select the	The current frequency step size does	Select the appropriate frequency step		46
19	exact desired frequency	not allow the frequency to be selected.	size.
20	using the [UP]/ [DWN]
	or Tuning control.
21
	You cannot recall any	You have stored no data in any of the	Store the desired frequencies in		27
22	memory channels.	memory channels using the current	memory channels using the current
23		band.	band.

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