Kenwood TS-480SAT, TS-480HX instruction manual DC Error, Vgs Err

16 TROUBLESHOOTING

Problem	Probable Cause	Corrective Action	Page
			Ref.
“TEMP–HI” appears	A sensor in the transceiver detected	Stop transmitting and let the transceiver	–
and “CHECK” in	high temperature.	cool down for a while. Contact a
Morse code sounds.		KENWOOD authorized service center to
		clean the internal air filters.
“PA ERROR” and	A sensor in the transceiver detected	Let the transceiver cool down for a while,	88
“CHECK” in Morse	malfunctions in the TX power amplifier	then perform the Full reset. If the problem
code sounds, then	circuit.	persists, contact a KENWOOD authorized
the transmission		service center for repairs.
stops (TS-480HX
only).
“RX ONLY” appears	1 The DC cable is not connected to	1 Apply (or connect) the DC power	2, 3
and “CHECK” in	the DC-2 connector.	source to the DC-2 connector.
Morse code sounds	2 The voltage difference between the	2 Confirm that the output DC voltage of	2, 3
(TS-480HX only).	DC-1 and DC-2 connectors on the	both DC power supplies is 13.8 V DC.
	transceiver is greater than 1.0 V DC.	The difference must be within 1.0 V
		DC.
“DC ERROR”	The voltage of the DC power supply(s)	Adjust the DC power supply voltage to	3
appears and	is too high.	13.8 V DC.
“CHECK” in Morse
code sounds.
Transmission	1 The voltage difference between	1 Confirm that the output DC voltage of	2, 3
suddenly stops.	DC-1 and DC-2 connectors on the	both DC power supplies is 13.8 V DC.
	transceiver becomes greater than	The difference must be within 1.0 V
	1.0 V DC.	DC.
	2 The voltage of the DC power	2 Adjust the DC power supply voltage to	3
	supply(s) is too high.	13.8 V DC.
	3 Two different type of DC cables are	3 Use same type of DC cables.	2, 3
	used.
“VGS ERR”	An internal error occurred in the VGS-1.	Confirm the connector of VGS-1 is	83,
appears.		securely connected to the transceiver.	88
		Perform the Full reset. If the problem
		persists, contact a KENWOOD authorized
		service center for repairs.
A message cannot	There is a communication error	Confirm the connector of VGS-1 is	83,
be recorded/ played	between the transceiver and VGS-1.	securely connected to the transceiver.	88
back or no		Perform the Full reset. If the problem
announcement can		persists, contact a KENWOOD authorized
be heard.		service center for repairs.
The transceiver	Most of the external RF power meters	Apply a continuous single tone (1 kHz) to	–
output power seems	measure the average RF power. So,	the microphone audio input to measure
to be low in SSB	the meter reading is low when you	the RF output power. The PEP will be the
mode.	operate and talk in SSB mode.	same as this RF output level.
	The LCD meter used in the TS-480 has
	relatively fast response time but it is not
	fast enough to measure the accurate
	PEP (peak envelope power).

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