Service manual

ManualsBrandsVertex Standard ManualsRadioVX-231

Introduction

This manual provides technical information necessary for servicing the VX-230 FM Transceiver.

Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualified persons to ser-

vice this equipment may result in permanent damage not covered by the warranty, and may be illegal in some countries.

Two PCB layout diagrams are provided for each double-sided circuit board in the transceiver. Each side of is referred to by the type

of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only chip components, and

the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded

components only.

While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liability for damage that

may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any inconsistencies in the

technical information would be appreciated.

Specifications...........................................................2

Exploded View & Miscellaneous Parts .................3

Block Diagram ........................................................ 5

Circuit Description ................................................7

Contents

Alignment ............................................................... 9

MAIN Unit (Lot. 1~5) .......................................... 17

MAIN Unit (Lot. 6~) ............................................ 21

MAIN Unit Parts List .......................................... 25

Important Note

This transceiver was assembled using Pb (lead) free solder, based on the RoHS specification.

Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus. The

solder stated above utilizes the alloy composition required for compliance with the lead-free specification, and any solder with

the above alloy composition may be used.

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Close

Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,

Kwun Tong, Kowloon, Hong Kong

VERTEX STANDARD

(

AUSTRALIA

)

PTY., LTD.

Normanby Business Park, Unit 14/45 Normanby Road

Notting Hill 3168, Victoria, Australia

UHF FM Transceiver

VX-230 Series

Service Manual

2009 VERTEX STANDARD CO., LTD. EC085U90C

Summary of content (38 pages)

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VERTEX STANDARD CO., LTD. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan VERTEX STANDARD UHF FM Transceiver US Headquarters 10900 Walker Street, Cypress, CA 90630, U.S.A. VX-230 Series Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K. YAESU UK LTD. VERTEX STANDARD HK LTD. Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong Service Manual ©2009 VERTEX STANDARD CO., LTD. VERTEX STANDARD (AUSTRALIA) PTY., LTD.
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Specifications VTX/EXP version General Frequency Range: 450MHz - 512MHz (Version VTX, Type D), 450MHz - 520MHz (Version EXP, Type D), 400MHz - 470MHz (Version VTX/EXP, Type A) Number of Channels: 16 Power Supply Voltage: 7.4 V DC ±10 % Channel Spacing: 12.5 / 20 / 25 kHz Battery Life (5-5-90 duty): 9 hrs (7.3 hrs w/o saver) w/FNB-V103LI (1150 mAh) 16.5 hours (13.5 hrs w/o saver) w/FNB-V104LI (2000 mAh) Operating Temperature Range: +22 °F to +140 °F (–30 °C to +60 °C) Frequency Stability: ±2.
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Exploded View & Miscellaneous Parts d d RA1096000 COIL SPRING RA0173500 CAP (MIC/SP) CP9350001 FRONT CASE ASSY RA1058900 O RING RA103980A RELEASE KNOB(BATT) RA090600C KNOB(VOL) RA1107500 LATCH PLATE RA091760B KNOB ASSY(CH) RA1041900 FRAME(PTT) RA090490B COVER(PTT) RA1041800 RUBBER(SIDE) RA1041700 RUBBER(PTT) RA0187600 SHEET RA1042100 LOCK PLATE T9318325 WIRE ASSY (YEL 65) RA0557900 SP NET T9318324 WIRE ASSY(BLK 65) M4090192B SPEAKER (14-ohm/1W) RA1085300 TAPE(SP) f RA1124300 (DST: EU) SHIE
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Note 4
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Block Diagram 5
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Block Diagram Note 6
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Circuit Description 1. Circuit Configuration by Frequency The receiver is a Double-conversion Super-heterodyne with a first intermediate frequency (IF) of 67.65MHz and a second IF of 450kHz. Incoming signal from the antenna is mixed with the local signal from the VCO/PLL to produce the first IF of 67.65MHz. This is then mixed with the 67.2MHz second local oscillator output to produce the 450kHz second IF. This is detected to give the demodulated signal.
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Circuit Description 3-2. Drive and Final amplifier The modulated signal from the VCO Q1032 (2SC4227) is buffered by Q1027 (2SC5005). Then the signal is buffered by Q1018 (2SC5227) for the final amplifier driver Q1015 (RQA0004PXDQS). The low-level transmit signal is then applied to Q1010 (RQA0011DNS) for final amplification up to 5watts output power.
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Alignment Introduction Required Test Equipment The VX-230 series has been aligned at the factory for the specified performance across the entire frequency range specified. Realignment should therefore not be necessary except in the event of a component failure. All component replacement and service should be performed only by an authorized Vertex Standard representative, or the warranty policy may be voided.
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Alignment Test Setup Basic Alignment Mode Setup the test equipment as shown for transceiver alignment, then apply 7.5 V DC power to the transceiver. In the Basic Alignment mode, the aligned data written in the radio will be able to re-align its alignment data. In this mode, there are many items to align with five points (F1, F2, F3, F4, F5) except “Frequency”, “Mic Sense”, “SQL/RSSI”, and “Battery”.
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Alignment 1. PLL REFERENCE FREQUENCY (FREQUENCY) This parameter is to align the reference frequency for PLL. 1. Press the “Frequency” button to start the alignment. It will appear the Frequency Alignment window. 2. Click the “PTT” button, then the radio starts to transmit on center frequency channel. 3. Set the value to get desired frequency by drag the slide bar, click the up-down button, press the left or right key, or enter the value on the entry box. 4.
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Alignment 3. SQUELCH (SQL) This parameter is to align the SQL (Squelch) Sensitivity. There are several alignments as follows in the Squelch Sensitivity. Threshold SQL Level The Alignment for the Noise SQL Threshold level at Wide (5k/ 4k). or Narow (2.5k). Tight SQL Level The Alignment for the Noise SQL Tight level at Wide (5k/4k). or Narow (2.5k). Tight SQL RSSI Level The Alignment for the “level 14” of the RSSI SQL level at Wide (5k/4k). or Narow (2.5k).
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Alignment 5. MIC SENSE This parameter is to align the “Microphone Sense” (Gain) and it needs the appropriate JIG (Tuning Interface BOX). Connect the JIG and Test Equipment to the radio before the alignment is going to start. It must be done alignment of the “Max Deviation” before this alignment is going to start. 1. Click the “PTT” button, then the radio starts to transmit on center frequency channel. 2.
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Alignment 7. MODULATION BALANCE / (THIS ALIGNMENT IS DIFFICULT.) This parameter is to align the “Modulation Deviation” (Wide/Narrow) and it needs the appropriate JIG (Tuning Interface BOX). Connect the JIG and Test Equipment to the radio before the alignment is going to start.It must be done alignment of the "Max Deviation" before this alignment is going to start. ¯ 1. Click the “PTT” button, then the radio starts to transmit on selected channel. 2.
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Alignment 9. DCS DEVIATION / This parameter is to align “DCS Deviation” of the selected channel. ¯ 1. Input the desired DCS Code on the DCS Code Box. Default: 523 Input Range: 000 to 777 2. Click the “PTT” button, then the radio starts to transmit on selected channel. 3. Set the value to get desired deviation on the deviation meter by drag the slide bar, click the up-down button, press the left or right key, or enter the value on the entry box. 4.
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Note 16
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MAIN Unit (Lot. 1~5) Circuit Diagram RX: 2.1 V TX: 0 V RX: 0 V TX: 0.8 V RX: 2.9 V TX: 0 V –11 dBμ –1 dBμ +7 dBμ –5 dBμ –8 dBμ RX: 0.8 V TX: 0 V 5.0 V RX: 0 V TX: 4.2 V 4.2 V WIDE: 4.6 V NARROW: 0 V TX 5W: 1.1 V 7.4 V 3.0 V RX: 0.8 V TX: 0.8 V RX: 3.7 V TX: 4.2 V 4.9 V TX 5W: 0.7 V RX: 2.5 V TX: 2.5 V 0.3 V RX: 4.2 V TX: 4.0 V RX: 0 V TX: 0.4 V RX: 1.9 V TX: 1.8 V TX 5W: 1.9 V PTT “ON”: 0 V PTT “OFF”: 3.5 V 7.4 V 0.7 V LOCK: 3.4 V UNLOCK: 0 V SAVE “ON”: 0 V SAVE “OFF”: 3.5 V 5.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit (Lot.
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MAIN Unit Parts List REF. DESCRIPTION VALUE V/W TOL.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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MAIN Unit Parts List REF.
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Parts List REF. R 1206 R 1207 R 1208 R 1210 R 1211 R 1213 R 1214 R 1219 R 1220 R 1223 R 1224 R 1226 R 1228 R 1229 R 1230 R 1231 R 1233 R 1233 R 1233 R 1233 R 1233 R 1234 R 1235 R 1235 R 1236 R 1237 R 1238 R 1239 R 1240 R 1241 R 1242 R 1243 R 1243 R 1243 R 1243 R 1243 R 1244 R 1245 R 1246 R 1247 R 1248 R 1249 R 1251 R 1251 R 1251 R 1252 R 1253 R 1255 R 1256 R 1257 R 1258 R 1259 R 1260 R 1261 R 1262 R 1263 R 1273 R 1274 R 1275 R 1276 R 1277 R 1278 R 1279 R 1280 R 1281 R 1282 R 1283 DESCRIPTION CHIP RES.
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Parts List REF. DESCRIPTION R 1284 R 1285 R 1285 R 1287 R 1294 R 1295 R 1296 R 1297 R 1298 R 1298 R 1299 R 1300 R 1301 R 1302 R 1303 R 1304 R 1306 R 1307 R 1308 RB1001 RB1002 S 1001 S 1002 S 1003 S 1004 TH1001 VR1001 X 1001 X 1002 XF1001 XF1001 XF1001 CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. CHIP RES. BLOCK RES. BLOCK RES.
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