Manuals / Icom / Home Audio / Stereo System

Icom IC F121S, IC F110S, IC F111S service manual Board Layouts

Models: IC F121S IC F110S IC F111S

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Parts list Section Block Diagram Disassembly Instructions Starting Software Adjustment Power Supply Circuits Service Manual

Page 65

SECTION 9 BOARD LAYOUTS

9-1 FRONT UNIT

• TOP VIEW

4

1

5

8

2					8
J1		CLO		PTT		MIC		CLI


	8V		AFO		MICE		GND

	1				7

to Microphone

9 - 1

Page 64 Page 66

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Icom IC F121S, IC F110S, IC F111S service manual Board Layouts

Page 64 Page 66

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Contents

IF110S IF111S IF121S Repair Notes IntroductionOrdering Parts Explicit Definitions Receiver EUR Section Inside View Disassembly Instructions Receiver Circuits Antenna Switching Circuit Main Unit3 1ST Mixer and 1ST if Circuits Main Unit RF Circuit Main Unit Transmitter Circuits PLL Circuits Power Amplifier Circuit Main UnitAPC Circuit Main Unit PLL Circuit Main Unit Port Allocations Power Supply Circuits CPU Starting Software Adjustment Adjustment Software InstallationPreparation System Requirements Equipment Grade and Range Required Test Equipment Screen display exampe Voltage PLL Adjustment Power Software Adjustment Convenient Software Adjustment Trimmer Adjustment Front Unit Section Parts List Main Unit Unit Posistor PRF18BD471QB1RB Ceramic Tantalum ECST1CY105R =Surface mount Mechanical Parts Main Unit SEMI-CONDUCTOR Information Board Layouts Bottom View Front Unit ANT Bottom View Main Unit Section Block Diagram Voltage Diagrams Main Unit Beepo Pwon Page Page Service Manual IC-F210S Low Band 400-430 MHz High Band 440-490 MHz Type of emission 12.5 kHz Narrow/25 kHz Wide 8K50F3E/16K0F3E IC3 Disassembly Instructions 2nd if filter 450 kHz Transmitter Circuits IC4 MB15A02PFV1 Output Expander Main unit IC6 Switching circuit Main unit Q23 Adjustment Procedures FM deviation meter RF power meter CH No RX Freq = 440.200000, TX Freq = RF Power High C133 430.000 MHz Panel Counter to the antenna connec MHz L Operating freq 400.000 MHz L Trimmer Adjustment Ceramic ECJ0EB1C153K Coil LQW2BHN15NJ01L Coil Eljre R10G-F Ceramic GRM31M4C2H2R0CY21L Tantalum CH 1H 8010019060 Chassis 25W 8010019130 Long chassis 45W MP8 M DAN222TL DSA3A1 HVC350B Board Layouts Bottom View Front Unit Chassis IC3 EP3 EP2 Bottom View Main Unit Tmut R29 18k C19 NTCG20 VCC1 VCC2

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