Icom IC F111S, IC F110S, IC F121S service manual C133

5-2 PLL ADJUSTMENT

ADJUSTMENT		ADJUSTMENT CONDITIONS			MEASUREMENT		VALUE	ADJUSTMENT
				UNIT		LOCATION		UNIT	ADJUST
PLL LOCK	1	• Operating freq. : 400.000 MHz [L]		MAIN		Connect a digital multi-	1.0 V	MAIN	C133
VOLTAGE			440.000 MHz [H]			meter or an oscillo-
		• Receiving				scope to the check
						point, “LV”.
	2	• Output power	: Low1				1.0 V		C134
		• Transmitting
	3	• Operating freq. : 430.000 MHz [L]					3.3–4.4 V [L]		Verify
			490.000 MHz [H]				3.3–4.5 V [H]
	4	• Receiving					3.3–4.4 V [L]
		• Output power	: Low1				3.3–4.5 V [H]
		• Transmitting

DC power supply 13.2 V / 15z A

LV

PLL lock voltage check point

C133

PLL lock voltage adjustment for RX

C134

PLL lock voltage adjustment for TX

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