Kenwood TH78E, TH-78A instruction manual Troubleshooting

TROUBLESHOOTING

The following problems are generally caused by improper transceiver operation or connection, not by defective components.

If you experience any of these problem causes and corrective actions before requesting service.

Symptom	Probable Cause		Corrective Action
Indicators do not light and no	1. Low voltage.		1. Recharge/ replace the battery.
receiver noise is heard when the	2.	With optional DC cable:	2.	1) Check cables and connections.
POWER switch is turned on.		1) Bad power cable or
		connections.		2) Check for the cause of the
		2) Blown power supply fuse.
				blown fuse and replace the fuse.
No sound from the speaker.	1. Squelch is closed.		1.	Turn the SQL control
No signal can be received.	2. With the TSU-7: CTCSS is			counterclockwise.
		operating.	2.	Press the F key, then press the 3
				key to turn off the CTCSS.
	3.	DTSS is operating.	3.	Press the F key, then press the 2
				key to turn off the DTSS.
	4.	Paging is operating.	4.	Press the F key, then press the 1
				key to turn off the Paging.
No control works.	1. LOCK is ON.		1.	Press the F key, then press the M
				key.
	2.	T.ALT is ON.	2. Press the F key, then press the 5
				key.
Memory channel cannot be	Nothing is stored in the memory		See Using the Memory (page 19)
recalled.	channel.
Memory cannot be backed up.	1. Battery voltage is low.		1.	Recharge the battery.
	2.	Battery case removed.	2.	Install the Battery case.

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