Kenwood TK-260G, TK-270G service manual AF Vtvm Hpfoff

TK-260G/270G

ADJUSTMENT

Item	Condition	Measurement		Adjustment		Specifications/
		Test equipment	Terminal	Parts	Method	Remark
7. Max DEV	1) Adj item [MAX]	Power meter	ANT	Encoder	4.2kHz	±50Hz
Adjust	Adjust [∗∗∗]	Dev meter	SP/MIC connector	knob	(According to
[Wide]	AG:1kHz / 150mV	Oscilloscope			the larger +,-)
	Dev meter filter	AG
	LPF:15kHz	AF VTVM
	HPF:OFF

2)Adj item

[.M A X] ➞ [.M.A.X] ➞ [.M.A.X. .] Adjust [∗∗∗]

PTT:ON

	[Narrow]	1) Adj item [MAX .]					2.1kHz
			Adjust [∗∗∗]				(According to
			PTT:ON				the larger+,-)
8. MIC		[Panel Test Mode]					Check	2.2~3.0kHz
	Sensitivity	1) CH-Sig:1-1
	Check		AG:1kHz / 15mV
			LPF:15kHz
			PTT:ON
9. DQT VCO		1) Adj item [VDQT]		Power meter	ANT	Encoder	Make the
	Balance		Adjust [∗∗∗]	Dev meter	SP/MIC connector	knob	demodulation
	Adjust		LPF:3kHz	Oscilloscope			waves into
	[Wide]		HPF:OFF	AG			square waves.
		2) Adj item		AF VTVM
			[V.D Q T] ➞ [V.D.Q.T] ➞ [V.D.Q.T. .]
			Adjust [∗∗∗]
			PTT:ON
	[Narrow]	3) Adj item [VDQT .]
			Adjust [∗∗∗]
			PTT:ON
10.QT TCXO		Adj item [X Q T]
	Balance	Adjust [200]
		Wide, Narrow
11.DQT TCXO		Adj item [X D Q T] 5
	Balance	Adjust [150]
		Wide, Narrow
12.QT VCO		Adj item [V Q T]
	Balance	Adjust [∗∗∗]
		[VDQT] x 200 =[VQT]
		150
13. QT Deviation		1) Adj item [FQT]					Wide:0.90kHz	±40Hz
	Adjust		Adjust [∗∗∗]				Narrow:0.42kHz	±40Hz
			LPF:3kHz
			HPF:OFF
	[Wide]	2) Adj item
			[.F Q T] ➞ [ .F.Q. T] ➞ [ .	F.Q.T. .]
			Adjust [∗∗∗]
			PTT:ON
	[Narrow]	3) Adj item [FQT.]
			Adjust [∗∗∗]
			PTT:ON

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