VGC UV-E5 Service Manual

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Ser vice Manual

MODEL:UV-E5

VERO GLOBAL COMMUNICATION CO.,LTD

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Summary of Contents for VGC UV-E5

Page 1 Ser vice Manual MODEL:UV-E5 VERO GLOBAL COMMUNICATION CO.,LTD...
Page 2: Table Of Contents
------------------ -------------------- CONTENTS INTRODUCTION ELECTRICAL FEATURES FEATURE LCD DISPLAY KEY FUNCTION CIRCUIT DESCRIPTION BLOCK DIAGRAM CIRCUIT DIAGRAM PARTS LAYOUT PART LIST...
Page 3: Introduction
Introduction Scope of this manual This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information the equipment and is current as of the publication date. This manual almost correct and complete, if there is something oversight, company keeps the right of explanation.
Page 4: Electrical Features
Electrical Features 1-1 STANDARD TEST CONDITIONS Supply Voltage V DC ● Antenna Impedance 50 Ohm ● Audio Frequency 1 KHz ● Main Signal Input ‐47 dBm ● Deviation 3Khz / N : 1.5KHz ● 1 5 . Vrms at external Speaker Reference Audio Output Power ●...
Page 5: Feature
Feature: ● Dual Band Dual Frequency 136-174MHz&400-470MHz ● 5 Watts Output Power ● 128 Memory Channels ● High/low Power Switchable ● 25khz/12.5khz Switchable ● Channel Steps(2.5/5/6.25/10/12.5/25KHz) ● KeyPad Operation ● CTCSS / CDCSS ● Programmable In Separate Channels ● Come With 1800mAh Li-ion Battery ●...
Page 7: Key Function
COMBINATION KEY FUNCTION...
Page 8 [ D IAL] Tuning knob, used to turn on/off the Radio, and adjust the Volume.
Page 9: Circuit Description
Circuit Description The UV-E5 contains RF IC, RF Receive Amplifier, RF Transmit Amplifier audio power amplifier circuit, FM radio integrated IC/AF amplifier, microprocessor and LCD display. A. RF IC RF IC actually is a semi-duplex FM transceiver which designed to operate In the frequency range: 136-174MHz and 400-480MHz.
Page 10 B.RF Receive Amplifier 1.Receive in the frequency range: 136-174MHz A coming signal from the antenna is applited to an RF amplifier Q11 after passing through a transmit / receive switch circuit and LC band pass filter. After the signal is amplified, it enters RF IC. 2.
Page 11 C. RF Transmit Amplifier 1. Transmit in the frequency range: 136-174MHz The sound signal enters RF IC from MIC1, it would be filtered, amplified and direct modulated, then at the output port of the RF IC will obtain 136-174MHz RF signal. The signal will be input in the RF AMP Q1 after amplified by RF AMP Q3, then it is passed to antenaa terminal through RF PA Q5 2.
Page 12 D. audio power amplifier circuit Rf transceiver integrated IC will receive the RF FM through it’s internal low- noise amplifier, direct down-conversion to low and intermediate frequency through the amplifier and analog-digital converter into a digital signal by the digital signal processor for digital FM demodulation. Demodulated audio baseband signal throuhg the audio output amplifier U4 to the speaker.
Page 13 、 FM Radio integrated IC / AF Amplifier 1. The RF signal converted to the firs intermediate frequency through the low noise amplifier within the RF IC, then amplified and D/A converted to the digital signal, the passed to the digital frequency discriminator for demodulation.
Page 14 、 F microprocessor and LCD display With 8 bit microprocessor U6 controls the transmit / receive of whole circuit and all functions. And the LCD displays all relevant message. - MCU Drawing - - LCD Drwaing - -13-...
Page 15: Block Diagram
MIC1 RF AMP （ TX ） RF OUT MIC AMP UHF/VHF RF IC VOX AMP UHF RF AMP HSC277 RF IN VHF RF AMP AF OUT PTT KEY HSC277 PF1 KEY RADIO IC RF AMP MONI KEY VOX_CHECK SPEAKER BEEP 32.768KHZ J301 AF AMP...
Page 16: Circuit Diagram
C181 C182 105P Vout 103P UMC4 DTA114EE TX LED P72/INT2 UV-E5 MK II P o c k e t T w o - w a y R a d i o s U V - E 5 DUAL BAND RADIO...
Page 17: Parts Layout
Parts Layout:...
Page 18 Parts Layout:...
Page 19 Parts Layout:...
Page 20 Parts Layout:...
Page 21: Part List
UV-E5 MKII Parts list REV5.0 Type/Model Spec. Digit No. 0402 R103,R77,R5,R47,R99,R86,R8 0402 R87,R91,R92,R4,R98,R101,R100 0402 0402 R3,R15,R128, 100R 0402 R38,R137,R78,R80,R10,R71,R33,R29,R119, R114 150R 0402 R19,R18,R23 220R 0402 R153,R152,R151 330R 0402 R7,R6 1.8K 0402 820R 0402 R113 0402 R116,R117,R115,R118,R37,R93,R96,R97,R154,R12 0402 R68,R133,R134,R135,R136,R132,R89,R83 0402 R81,R85...
Page 22 100P 0402 C125,C95 102P 0402 C176,C128,C210,C188,C117,C141,C130,C132, 103P 0402 C123,C121,C153X,C100,C99,C184,C151,C119, 104P 0402 C175,C122,C103,C104,C173,C178,C105,C159,C158 105P 0402 C197,C194,C152,C15,C149,C185 220P 0402 C161,C142,C143,C144 470P 0402 C170,C126,C116,C1,C4,C3,C6,C36,C38,C133, 473P 0402 C157,C135,C146 0603 C46,C50 0603 0603 C49,C57 0603 0603 C12,C45,C47,C10,C11 0603 C71,C33 0603 0603 C68,C70 0603 C59,C65,C67,C66 0603 C69,C76 0603 0603...
Page 23 R24/2SC3356 SOT23 R25/2SC4226 SOT323 Q12,Q11,Q10 14/DTA114EE SOT523 Q13,Q36,Q16,Q26,Q35 24/DTC114EE SOT523 Q14,Q15,Q22,Q2,Q24,Q23,Q18,Q25,Q32,Q9,Q7, 2SC4177 SOT323 2SA1362 SOT23 LY/2SC458(2712) SOT23 Q27,Q21 BV4/2SB624 SOT23 Q28,Q33,Q30,Q6,Q20 2SK3078A SMD3A UMC4 SOT25 UPA572 SOT25 RQA0009 SOT89 RDA5802 QFN24 24C64 SMD8 RDA1846 QFN40 NJM2904 SSOP8 TDA2822 SOP8 VOICE SOP8 QFP44A 3.3V...