Table of Contents
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UHF FM TRANSCEIVER
PX-666
SERVICE MANUAL
------------------CONTENTS--------------------------
INTRODUCTION............................................................2
GENERAL ................................................................................. 2
CIRCUIT DESCRIPTION ........................................................3-8
TECHNICAL SPECIFICATION ............................................. ...9
SOFTWARE FUNCTION SPECIFICATION........................10
SEMICONDUCTOR DATA.................................................... 11
PARTS LIST...........................................................................12-16
BLOCK DIAGRAM ............................................................. 17
PCB BOARD...............................................................18-19
SCHEMATIC DIAGRAM....................................................... 20-22
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Summary of Contents for Puxing PX-666
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Page 1: Table Of Contents
UHF FM TRANSCEIVER PX-666 SERVICE MANUAL ------------------CONTENTS-------------------------- INTRODUCTION……………………………………………………2 GENERAL ................. 2 CIRCUIT DESCRIPTION ............3-8 TECHNICAL SPECIFICATION ..........…9 SOFTWARE FUNCTION SPECIFICATION……………………10 SEMICONDUCTOR DATA..........……. 11 PARTS LIST................12-16 BLOCK DIAGRAM …………………........17 PCB BOARD………………………………………………………18-19 SCHEMATIC DIAGRAM............20-22... -
Page 2: Introduction
Keep the Radio dry. Rainwater or damp will corrode electronic circuits. If it appears that the Radio diffuses peculiar smell or smoke, please shut off its power immediately and take off charger or battery in the Radio, then contact with PUXING agency. Do not transmit without antenna. -
Page 9: Technical Specification
Technical specification of PX-666 General 450-470MHz Frequency Range －20℃―＋50℃ Working Temperate Operating Voltage DC 5.4-6.5V Operate Mode Simplex or Semi-duplex Dimension 102mm×55mm×37mm (Not included Antenna) Weight with battery and antenna 278g Antenna impedance 50Ω Transmitter ±2.5PPM Frequency Stability ≥4W Output Power ≦5KHz... -
Page 10: Software Function Specification
PX-666 Software Function Specification Specification 1. UHF 4W output UHF: 450-470MHz 16 Channels 3.Wide(25kHz) and Narrow(12.5kHz) selectable 4.Monitor function 5.Power Save function 6.Adjust squelch level(0-9) 7. CTCSS/DCS tone 8.Scan 16th channel 9.Transmitting timer 10.Output power adjustable 11.Reverse frequency simplex 12.CTCSS/DCS selectable Operation 1．... -
Page 11: Semiconductor Data
PX-666 CPU PIN FUNCTION ITEM DESCRIPTION FUNCTION Encoder input Encoder input Encoder input Encoder input CLK ROM CLOCK AND EEPROM CLK PLL CLOCK AND PLL CS PLL CS PLL port Unlock Detection DATA ROM Data and eeprom MIC MUTE MIC MUTE CONTROL... -
Page 12: Parts List
PX-666 PART LIST Designators Footprint Comment Quantity MARK CAPACITOR C0402 0.5P(B) C212 C211 C323 C306 C149 C201 C205 C151 C0402 1P(B) C154 C0402 1.5P(B) C155 C0402 2P(B) C209 C200 C0402 3P(B) C341 C204 C153 C312 C214 C0402 C148 C0402 5P(B) - Page 13 C0402 333P C451 C0402 390P C433 C635 C344 C247 C107 C106 C114 C157 C110 C109 C121 C143 C129 C0402 470P C145 C125 C864 C120 C615 C602 C180 C173 C832 C234 C0402 472P C254 C0402 473P C631 C621 C644 C0402 680P C633 C623 C0603 103P...
- Page 14 L1009 27nH L320 L3325 L118 RESISTANCE R0402 R120 R200 R406 R346 R401 R0402 R825 R644 R640 R341 R320 R115 R0402 R109 R111 R0402 R121 R128 R922 R926 R246 R431 R641 R323 R0402 100R R321 R921 R209 R204 R240 R640 R0402 150R R642 R0402...
- Page 15 R0402 R126 R0402 R185 R0402 R322 R0402 R117 R0402 R342 R0402 R903 R0402 100K R603 R904 R881 R306 R303 R201 R173 R171 R170 R174 R175 R172 R0402 150K(F) R882 R0402 120K R455 R0402 180K R243 R241 R0402 220K R181 R286 R433 R203 R232 C251 R0402 680K R606...
- Page 16 SOT89 2SK3078 T105 COIL T3X15X040 L207 L206 L205 L204 L203 L202 T4X15X040 L110 L112 L113 L114 T8X15X040 L106 L104 TUNMER VR1208 VR451 VR1208 VR421 CRYSTAL CR_DS0305 12.8MHz CR421 CR_DS0603 32.768KHz CR901 CR_DS6055 38.850MHz FL230 OTHER ANKEY1 SW923 SW922 SW-CH 16CH SW921 SW-CH SW-VR...
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Page 17: Block Diagram
Block diagram FAML AMP DRIVE AMP ANT SW T101 T102 T105 T107 D302 T321 T322 T341 D101 D301 +5VC +5VT +5VT D201 BATT D202 U170 D303 T181 NJM2904V T311 +5VR +5VT T171 TCXO P TX U401 vccn 12.8MHZ LMX2332ATM +5VC VR421 FL240 CR240 PTT/RXD... - Page 20 L401 E404 C401 C408 C407 C406 22uF 100nH 102P 101P 101P 101P T323 2SC1623 D320 R324 1N4148 R406 U401 R411 C329 LMX2332ATM 103P 150K D401 C403 PMSD4148 R301 C404 R400 R412 R402 C402 PR401 C405 101P L301 L302 101T 390n D302 R405 R404...
- Page 21 +5VC +5VT C157 T323 470P 2SC1623 D320 R324 C328 C327 R323 1N4148 102P 103P 100R L105 R341 C156 101T L103 R109 104P 100nH R320 R348 C120 C110 C343 103P C326 470P 103P L104 103P R345 L101 C107 R113 C320 E321 L322 R108 R342...
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Page 22: Schematic Diagram
+5VT C129 C126 R139 R154 470P 105P 270R 270R JP101 L107 JPANT L105 101T 101T C143 C144 C132 470P L109 220nH L112 L113 L114 C131 C125 C128 L104 104P 470P 103P D101 C145 L106 R123 C136 C148 C154 C142 HVU131 470P C149 C151...
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