Vertex Standard VX-2100, VX-2200

I-1

FRONT-A Unit (VX-2100)

Circuit Diagram

RX: 0V

TX: 4.9V

RX: 4.9V

TX: 0V

5.0V

13.6V

Contents

Main VHF FM Transceiver VX-2100 Series VX-2200 Series Service Manual Introduction Specifications (VTX/EXP Version) General A-1 Receiver Transmitter Specifications (EU Version) A-2 General Receiver Transmitter DSUB 15-pin Accessory Connector B-1 Pin 1: AF IN (ANALOG INPUT) Pin 6: EXT PTT Pin 7: TRX Exploded View & Miscellaneous Parts VX-2100 FRONT PANEL VX-2200 FRONT PANEL Page Page Page 1. Circuit Configuration by Frequency 2. Receiver System E-1 Circuit Description 3. Transmitter System Circuit Description E-2 Introduction Required Test Equipment F-1 Alignment Preparation & Precautions Test Setup The Alignment Tool Outline Basic Alignment Mode F-2 F-3 1. RX VCO Tune Voltage (RX VCO) 2. TX VCO Tune Voltage (TX VCO) Unit 4. RX Sensitivity (RX Tune) 5. Squelch (SQL) F-4 3. PLL Reference Frequency (Frequency) 6. TX Power F-5 9. Sequential Tone Deviation 8. Sub Audio Deviation <CTCSS> / <DCS> F-6 7. Maximum Deviation <Wide> / <Narrow> CH (Channel-by-Channel) Fine Alignment Mode F-7 Installation of Option FVP-25/FVP-35/FVP-36 G-1 H-1 Circuit Diagram Page H-3 Page Page Page H-7 MAIN Unit (Lot. 5~8) Page Page H-11 MAIN Unit (Lot. 9~17) H-12 MAIN Unit (Lot. 9~17) Page Page H-15 MAIN Unit (Lot. 18~20) H-16 MAIN Unit (Lot. 18~20) Page Page H-19 MAIN Unit (Lot. 21~) H-20 MAIN Unit (Lot. 21~) H-21 H-22 H-23 H-24 H-25 H-26 H-27 H-28 H-29 H-30 H-31 H-32 H-33 H-34 Parts ListParts List H-35 Page Page FRONT-A Unit (VX-2100) I-3 FRONT-A Unit (VX-2100) Page J-1 Circuit Diagram Page J-3 Page FVP-25 Encryption/DTMF Pager Unit (Option) K-2 FVP-25 Encryption/DTMF Pager Unit (Option) Page L-2 FVP-36 Voice Inversion Type Encryption Unit (Option)