Icom IC F110S, IC F111S, IC F121S service manual PLL Adjustment, Voltage

5-2 PLL ADJUSTMENT

ADJUSTMENT		ADJUSTMENT CONDITIONS			MEASUREMENT		VALUE		ADJUSTMENT
				UNIT		LOCATION			UNIT	ADJUST
PLL LOCK	1	• Operating freq. : 174.000 MHz		MAIN		Connect a digital multi-	3.5 V		MAIN	C134
VOLTAGE		• Receiving				meter or an oscillo-
						scope to the check
						point, “LV”.
	2	• Output power	: Low1				3.5 V			C133
		• Transmitting
	3	• Operating freq. : 136.000 MHz					0.9–1.5	V		Verify
		• Receiving
	4	• Output power	: Low1				1.0–1.6	V
		• Transmitting

DC power supply 13.2 V / 15 A

LV

PLL lock voltage check point

C134

PLL lock voltage adjustment for RX

C133

PLL lock voltage adjustment for TX

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