Vertex Standard VX-160U Manual de usuario

Introduction

This manual provides technical information necessary for servicing the VX-160U and VX-180U FM Transceiver.

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

persons to service 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.

Service Manual

VX-160U/-180U

UHF FM Transceiver

Operating Manual Reprint............................ 2

Cloning ........................................................................

Specifications ................................................... 7

Exploded View & Miscellaneous Parts ...... 8

Contents

Block Diagram ................................................. 9

Circuit Description ................................11

Alignment .................................................13

Board Unit (

Schematics, Layouts & Parts

)

MAIN Unit ............................................................... 17

VX-160U VX-180U

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 EUROPE B.V.

P.O. Box 75525, 1118 ZN Schiphol, The Netherlands

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

Specifications

GENERAL Specifications

Frequency Range (MHz): 400 - 430 (AS1)

450 - 485 (D)

485 - 512 (F)

Number of Channels: 16 channels

Channel Spacing: 12.5 / 25 kHz

PLL Steps 5 / 6.25 kHz

Power Supply voltage: 7.5 VDC ± 20%

Operating Temperature Range: –22°F to +140°F (–30°C to +60°C)

Frequency Stability: ±2.5 ppm

Dimensions (WHD): 2.3" (W) x 4.7" (H) x 1.2" (D) (58 x 120 x 31 mm)

Weight (approx.): 0.81 lb. (365 g) w/FNB-64

RECEIVER Specifications (Measurements made per EIA standard TIA/EIA-603)

Sensitivity

EIA 12 dB SINAD : 0.25 µV

20 dB Quieting : 0.35 µV

Adjacent channel selectivity: 65 dB (25 kHz) / 60 dB (12.5 kHz)

Intermodulation: 65 dB

Spurious and Image Rejection: 65 dB

Hum & Noise 45 dB

Audio output: 500 mW @4 Ohms, 5% THD

TRANSMITTER Specifications (Measurements made per EIA standard TIA/EIA-603)

Power output: 5.0 / 1.0 W

Modulation: 16K0F3E, 11K0F3E

Conducted Spurious Emissions: 60 dB Below Carrier

FM Hum & Noise: 40 dB (25 kHz) / 35 dB (12.5 kHz)

Audio distortion (@ 1 kHz): < 5 %

Measurements per EIA standards unless noted above. Specifications subject to change without notice or obligation.

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Operating Manual Reprint

t s C ectControls & Connectors

C e tt s c

Controls & Connectors efor BeginBefore You Begin

e or eg nf B i

Before You Begin

Battery Pack Installation and Removal

UTo install the battery, hold the transceiver with your

left hand, so your palm is over the speaker and your

thumb is on the top of the belt clip. Insert the battery

pack into the battery compartment on the back of the

radio while tilting the Belt Clip outward, then close

the Battery Pack Latch until it locks in place with a

“Click.”

Dis s & di s 0 OnlDisplay Icons & Indicators (VX-180 Only)

D s s d 0 ni & i s O l

Display Icons & Indicators (VX-180 Only)

UTo remove the battery, turn the radio off and remove

any protective cases. Open the Battery Pack latch on

the bottom of the radio, then slide the battery down-

ward and out from the radio while holding the Belt

Clip.

Caution!

Do not attempt to open any of the rechargeable Ni-

Cd packs, as they could explode if accidentally short-

circuited.

Low Battery Indication

UAs the battery discharges during use, the voltage gradu-

ally becomes lower. When the battery voltage reaches

6.3 volts, substitute a freshly charged battery and re-

charge the depleted pack. The TX/BUSY indicator on

the top of the radio will blink red (on the VX-180, the

“” icon will appear on the LCD) when the battery

voltage is low.

UAvoid recharging Ni-Cd batteries often with little use

between charges, as this can degrade the charge capac-

ity. We recommend that you carry an extra, fully-

charged pack with you so the operational battery may

be used until depletion (this “deep cycling” technique

promotes better long-term battery capacity).

Microphone

Speaker

MIC/SP Jack

(

External Mic/Earphone

)

VOL/PWR Knob

CH (Channel)Selector

Monitor Button

Push To Talk

(PTT)Switch

Antenna

LED Indicator

Glows Green Monitor on

Blinking Green Busy Channel (or SQL off)

Glows Red Transmitting

Blinking Red Battery Voltage is low

Blinking Yellow Receiving a Selective Call

LCD (VX-180)

Soft KEY (VX-180)

Battery Pack Latch

8 Character Alpha-numeric

Invert ble Display

This icon is the “Low Battery” in-

dicator, which appears when the

battery voltage becomes too low

for proper operation.

This indicator confirms that

DUAL 2-TONE DECODE is active.

This indicator confirms that

DUAL WATCH is active.

This indicator confirms that

this channel will be skipped

during scan.

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