Raymarine RAY 210VHF operation manual Parts List & Drawings

SECTION 4	TECHNICAL DESCRIPTION
4.1	RECEIVING CIRCUIT OPERATION	25
4.1.1	Antenna Switching Circuit	25
4.1.2	High Frequency Amplifier Circuit	25
4.1.3	1st Intermediate Frequency Amplifier Circuit	25
4.1.4	2nd Intermediate Frequency Amplifier Circuit	25
4.1.5	Low Frequency Circuit	26
4.1.6	Squelch Circuit	26

4.1.7Low Frequency Treatment Circuit (CPU AF 26

	Board)
4.1.8	WX Alert Detection				26
4.2	TRANSMITTING CIRCUIT OPERATION				26
4.2.1	Microphone Amplifier Circuit				26
4.2.2	High Frequency Power Amplifier				27
4.2.3	APC Circuit				27
4.2.4	Antenna Monitoring Circuit				27
4.3	PLL CIRCUIT OPERATION				27
SECTION 5	MAINTENANCE
5.1	GENERAL				30
5.1.1	How to contact Raymarine				30
5.2	PREVENTATIVE MAINTENANCE				31
5.3	ALIGNMENTS AND SERVICE				31
5.3.1	Test Equipment				32
5.3.2	PLL Adjustment				32
5.3.3	Frequency Adjustment (TRANSMITTER)				33
5.3.4	Modulation Adjustment (TRANSMITTER)				33
5.3.5	Power Output Adjustment				33
5.3.6	RF Sensitivity Adjustment (RECEIVER)				33
5.3.7	Weather	Alert	Frequency	Adjustment 34
	(RECEIVER)
5.4	TROUBLE SHOOTING GUIDE				34
5.4.1	Master Reset				34
SECTION 6 PARTS LIST & DRAWINGS
6.1	PART LOCATION LIST				37
6.2	ASSEMBLY DRAWING				43
6.3	SCHEMATIC DRAWING				45
SECTION 7	APPENDIX
7.1	VHF MARINE CHANNEL USAGE GUIDE				52

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