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1. mois UHF Band 2 450 470 MHz Main Board Bottom Side RE Cult Board and Schematic Diagram tor UHF Band 2 450 470 MHz UHF Band 2 450 470 MHz Schematic Diagram Section 7 UHF BAND 4 490 512 MHZ INFORMATION RE Cult Board and Schematic Diagram tor UHF Band 4 490 812 MHz 1 0 Circuit Board and Schematic Diagram for UHF Band 4 490 512 MHz2. Lf Be 5 2 B i E i sa k UHF Band 4 490 512 MHz Main Board Top Side RF Board and Schematic Diagram for UHF Band 400 512 m was ae gg zh ener rj ER zi E IRE TE rr EEE Em m UHF Band 4 490 512 MHz Main Board Bottom Side 4 RE Cult Board and Schematic Diagram tor UHF Band 4 490 812 MHz
3. Band 1 136 150 MHz Main Board Bottom Side E RF Cet Board and Schemabe Diagram for VHF Band 1 136 150 MHz Band 1 136 150 MHz Schematic Diagram Section 4 VHF BAND 2 150 174 MHZ INFORMATION 150 174 MHZ s RF Cet Board and Schemabe Diagram tor VHF Band 2 150 174 MHz 1 0 Circuit Board and Schematic Diagram for VHF Band 2 150 174 MHz T VHF
4. UHF Band 4 490 512 MHz Schematic Diagram Appendix A Motorola Support Details for the Europe Middle East and Africa Region European Radio Support Centre ERSC The ERSC Customer Information Desk ls available through he folowing service numbers Ausra 0800207541 tay 8008 77387 Belgium 08002327 Fant 08001149910 Moway France 0800803090 Portuga 08 008495 70 Germany 0800187500 Span s0984 902 Greece 00 800491 29020 Sweden 020794307 w 08 00969095 Suizerand 0800553082 Or he European Repair and Serice Conte Please use these numbers tor repair enges oniy 2 Technical Support Motorola Product Sevics avaiable to asi the in resolving any matunctong A21 North Europe Contact Stephen Woodrow Telephone 44 0 1256 488082 Ermal CSWDB G motoeola com 22 Central and East Europe Contact Siggy Punzenbrger Telephone 40 0 6128 702342 Fax 40 0 6128 95 1096 mal com 22 aza A25 aze a27 azs Russia and Belarus Contact Sergey An Telephone 7 495 7850150 Fac 7 405 Tas 0185 mali 002 not com Germany Contact Customer Connect Team Telephone 48 0 30 6666 15
5. Te frequency proves reference to PLL thas a frequency of 25 at 30 to 60 PLL IC and Loop iter The put frequency of 2 channeled into PLL IC 0701 pin 8 divided ta 6 25Khz or Sch by a reference counter R The RF signal input from me VCO ideo prece 3233 N counter n PLL The intemal phase comparator compares signal rom he VCO wih ine relarenes frequency The regulator 58 Increases the intemal charge pump votage of PLL IC The LPF contains C738 C734 and R718 This aiso reduces residua ede and nois for a best Sionakto oise ate 40 41 ual veo The dual VCO module contains an RX VCO and a TX VCO They are congue as Cals and connected 1 power through cascade be On one VCO ia selected a ime The power source to esch block etched by transistore 0305 and 0111 and dependent on he of DX ENT and X EN The varicap diodes CR701 and CRTOZ produce a ande m frequency wi a change in vage 703 and 706 ar resonant tuning cola wich adjust he operating requeney wth specie DC tuning votage appled The aud signata ow passer Uto e applied to CRS dde VCO tobe TX RF signal Audio and Control Circuit EHA en RX Audio The RX audio signal comes trough the de emphasis six order pe 300 Hz HPF and 3 order GDUHZHPF The 30CH Hh Pass Fiter U205 emcuos a ale under SUCH to keep any undesired signal rom being heard fom I
6. 3 KHz to 300 GHz 1000 Aistlan Communicators Auoriy Radecommunicatons Electromagnetic Radiation Human Exposure Standard 2003 ANATEL ANNEX o Reson No 303 of July 2 2002 Regulation of Imation of exposure to magnete and electromagnetic ele in e radia equency rang between D KHZ and 300 GH and Atachmentt resoluton 303 rom July 2 20027 Fhdctionol Reaorements fr SMR Celular and PCS Product Cedicalon RF Exposure Compliance and Control Guidelines and Operating Instructions To conto your exposure and ensure compliance with the occupatonalcontoled onvecament exposure inis aways adhere the folowing procedures Guidelines Do not remove the RF Exposure Label om the device Use awareness instructona should accompany when transferred to other users Donat use tus device the operational eguremenis deserted herein are not met Operating Instructions Tranemitno more than the rated duty factor of 50 of the io To rami talk push the Push T Taik PIT buon To receive calis release the PTT button Tranemiung 50 o the me or lesa important because ta radio generates measurable RF energy exposure only whan ansrating n terms of measuring tor standards compliance he radio in a verical postion in ont af he face wth we microphone and ther of the radio including the antenna at least one inch 25 centimeters iR from he nose or ips Antenna shoud be kept a
7. Band 1 403 425 MHz 5 1 B 8 Seh E B i af 2 B ee fra E BE ax 22 53 gf UHF Band 1 403 425 MHz Main Board Top Side RF circu Board and Schematic Diagram for UHF Band 1 403 425 mois UHF Band 1 403 425 MHz Main Board Bottom Sido RE Cult Board and Schematic Diagram tor UHF Ba
8. Band 2 150 174 MHz Main Board Top Side 54 oe a VHF Band 2 150 174 MHz Main Board Bottom Side E RF Cist Board and Schemate Diagram tor VHF Band 2 150 174 MHz VHF Band 2 150 174MHz Schematic Diagram Section 5 UHF BAND 1 403 425 MHZ INFORMATION s2 RE Cult Board and Schematic Diagram tor UHF Band 1 403 425 MHZ 1 0 Circuit Board and Schematic Diagram for
9. amples next amplifed by nal 0403 passes through a Sp for mpodance matches and a low pass tarta suppress wants harmonics va h Antenna Switch Tre antenna switch i for enabling te T section and he RX section to share he antenna n ranemit mode PIN diodes CR401 CR301 CR3O2 are forward based and these enable the RF signal pase 1o he antena Low Pass Fiter Tre TX Low Pas Fiter consist ofa ith Chebyshev ter an reduces the unwanted spurious for TX power om inal Amplifier CA26 430 LADD 1410 35 ES 352 Auto Power Control The Auto Power Control keeps curent constan a the fal ameter 9403 The curent into 0403 af he fnat ampiir sensed acroas resistor R417 voltage diference across R417 sample rough LAD by the rato ol RA23 to RAT The ferential signal at the output of s passed to D404 Q408 wich then produce a constant Power output io the antenna ne cute changed due to a change of battery vonage cad e contis gate voltage of 0403 and corecir voltage of C401 402 o keap he TX power stabilizes TX power at a pre determined level adjusted by R425 High Power R428 Low Powe PLL Synthesizer re Ve conti vonage num Reference frequency 12 Binz VCTCXO Voltage Controled Temperature Compensated Crystal Oscar Main fequency can be adjusted by th chip immer of
10. energy These provide recommended levels of RF Exposure for both workers and he general ubl These recommended RF exposure lovis cda margins of protecion Al Motorola two way radios are designed manufactured and tested 1o ensure they meet overment osabshod RF exposure levela In addon manufacturers aso recommend specic parang insbuctons to users of lwo way radios These Instructions are because hoy orm users about RF energy exposure and provide sempe procedures on how a contrai 1 Please reter to me folowing webstes tor more Inlormaton on what RF energy expesr cort your exposure to sure complance wih established RF exposure nts Hip goat los hl tpa osha gov SLTCHadetequencyadatonIndex hiri Federal Communication Commission FCC Regulations The FCC require manufacturers to comply with the FCC RF energy exposure Imite for potable radios betore the can be marketed In o US When two way racios are used as consequence o employment he requires usare t be amare of and able to contral hele exposure 1o mootoceuatonalrequraments Exposure awareness can be faciltated by use of a product abel directing users to spec user awareness Information Your Motorola two way raio has RF exposure product abel Also your Motorola use manual or separata safety lfoematon and operating mtucions required conval your RF exposure and to satstycompkance requir
11. fr the equipment described and s current as of the printing dale Changes which occur aner e ping dae may be by a compete Mara revision or aternalvely as addons NOTE Before operating or testing these units please read the Safty Infomation Section in the front ot the manta Warranty and Service Support Motorola ater tong tem support for ts producta This support includes ful exchange andar repair fia product auring waranty period and senes repair or spare pars support out of waren Any retum for exchange or return for topa by an authorized Motorola Dealer must be accompanied by a Warranty Claim Form Warranty Claim ar obtained by contaceng an Alma Motorola Dealer Warranty Period and Return Instructions The terma and conditons of waranty are defined in the Motorola Dealer or Distributor or Resear contract These condition may change trom tme o trme and tne nates ar or the product is covered under a return for replacement or return for repai warranty check of the product should be performed prior to shipping to unt back o Motorola ta ensure at he product has been cael programmed ar has not been subjected to damage ousde he eme ofthe waranty NOTE For service technician the Latin America Countries Region For any warranty came in the atn America Count regen please open a case using ha Contact Ua feature wahin Motorola Onine at Ibusineesonine
12. ofthe radio as a Microprocessor Itis operated by an enema arent crystal N detects extemal sts such as the pressing of condo changing of channels and en making rad operate accordingly Section 3 VHF BAND 1 136 150 MHZ INFORMATION RF Creu Board and Schemate Diagram tor VHF Band 1 136 150 MHz 1 0 RF Circuit Board and Schematic Diagram for VHF Band 1 136 150 MHz le 3 Band 1 136 150 MHz Main Board Top Side
13. on the irasicaly safe approval label denies the approved Atessoras and or options hat can be used wih thet potable radio unit Using a non Motorola ntinscaly sae batery and or accessory with the Motorola approved radio u void the safe approval af hat radio un Table of Contents Document History i Safety Information Section 1 INTRODUCTION 10 Scope of Manual 4 20 Warranty and Service Support 4 2 1 Warranty Period and Retur instructions 4 22 After Warranty Period 4 23 Piece Parts 4 24 Technical Support 4 25 Further Assistance From Motorola 4 3 0 Radio Model Information 4 40 Radio Features 1 Section 2 THEORY OF OPERATION 10 Overview 24 1 1 Purpose 24 12 General Description 24 20 Receiver System 24 2 Front End 24 22 First Mixer 22 23 IF Amplifier 22 24 Squeich 22 30 Transmitter System and PLL Synthesizer 23 3 1 TX Power Stage 23 32 Antenna Switch 23 33 Low Pass Filter 23 34 Auto Power Contrai 24 35 PLL Synthesizer 24 40 Audio and Control Circuit 25 4 1 RX Audo 25 42 RX Sub Audible Decode Circuit 26 43 TX Audio 26 44 TX Sub Audible Encode Circuit 26 45 Microprocessor 26 Section 3 BAND 1 136 150 MHz INFORMATION 1 0 RF Circuit Board and Schematic Diagram for VHF Band 1 136 150 MHZ Band 1 136 150 MHz Main Board Top Side Band 1 136 150 MHz Main Board Bottom Side Band 1 136 150 MHz Schematic Diagram Section 4 VHF BAND 2 150 174 MHz INFORMATION 15
14. 0 174 MHz 10 RF Circuit Board and Schematic Diagram for VHF Band 2 150 174 MHZ Band 2 150 174 MHz Main Board Top Side Band 2 150 174 MHz Main Board Bottom Side VHF Band 2 150 174 Schematic Diagram Section 5 UHF BAND 1 403 425 MHz Information 1 0 RF Circuit Board and Schematic Diagram for UHF Band 1 403 425 MHz UHF Band 1 403 425 MHz Main Board Top Side UHF Band 1 403 425 MHz Main Board Bottom Side UHF Band 1 403 425 MHz Schematic Diagram Section 6 Band 2 450 470 MHz Information 10 RF Circuit Board and Schematic Diagram for Band 2 450 470 MHZ UHF Band 2 450 470 MHz Main Board Top Side UHF Band 2 450 470 MHz Main Board Bottom Side UHF Band 2 450 470 MHz Schematic Diagram Section 7 Band 4 490 512 MHz Information 10 RF Circuit Board and Schematic Diagram for UHF Band 4 490 512 MHZ UHF Band 4 490 512 MHz Main Board Top Side UHF Band 4 490 512 MHz Main Board Bottom Side UHF Band 4 490 512 MHz Schematic Diagram 32 32 33 34 42 42 43 44 52 53 54 62 62 63 64 72 72 73 74 Appendix A Motorola Support Details for the Europe Middle East and Africa Region European Radio Support Centre ERSC 2 Technical Support 1 Section 1 INTRODUCTION 10 20 2 Scope of Manual This manuals intended for use by service technicians familar wih types of equipment t contain serce information required
15. 38 Fax 49 0 30 6686 1916 cus com Middle East and Africa Contact Wayne Holmes Telephone 27 14 800 7922 Fax 27 M 8007923 small radiosupportzatimcturia com Hay Contact Ugo Gentle Telephone 30 0 2822 0325 Fax 380 2822 0334 mall C13884Gemal com France Contact Amand Roy Telephone 33 1 6335 7868 Fax 33 1 6038 7208 mali amandsoy malorota com France Contact Laurent mann Telephone 33 1 6035 7866 Faxe 33 1 6838 7208 mal ouentzemann motacla com 2 2007 Motorola Ine Al rights served Motorola Technology Sdn Bhd Co No 455657 H Piot 2 Bayan Lepas Technoplex Industrial Park Mukim 12 SWD 11800 Penang Malaysia Printed in Malaysia March 2007 Mag by Motorola
16. Mag by Motorola RADIO SERIES Detailed Service Manual Mag One by Motorola www motorola com Computer Software Copyrights Te Motorola products described in this manual may Include copyrighted Motorola computer programs stored in semiconductor memories or other meda Laws tha United States einer counties preserve for Motorola oertain exclusive righ for copyrighted computer programs icing but ot o the exclusive ah to copy or reproduce in any Torm a computer program Accordingly Copyrighted Motorola computer programs contained in te Motorola products deserted in mis manual may nol be copie reproduced ode reverse engineere or dstibied any manner without a express emen omission of Motorola Futhemeve he Purchas of Motorola products shal not deemed o grant elmer dec or by implication estoppel or otherwise any Weense under the copyrights pateta or patent ipolcatona of Motorola except fr ne normal non exclusive to use tnat anses operation in a product Technical Information Updates As we continue to make engineering enhancements to our products the information in our Service Manuals need to be updated accordingly Ifyou wish to be informed of these updates kindly fil in and fax us your details Fax to 6 04 6124944 The Technical Publications Coordinator Media and Communications RAD Department Motorola Penang
17. Y The folowing major changes have been implemented in tls manual since he previous eon Description Notes Safety Information Product Safety and RF Energy Exposure Booklet for Portable Two Way Radios The information proved in this document supersedes he general salety intormaton contained in user guides pushed pir to February 2002 RF Energy Exposure Awareness and Control Information and Operational Instructions for Occupational Use NOTICE This radio is intended for use in occupationalcontrolled conditions where users have fuli knowledge of thelr exposure and can exercise control over their exposure meet tne occupational imis in FCC and Intemational standards This radic Savice is NOT authorized or general population or consumer use two way rado uses electromagnetic energy in the ado frequency RF spectrum o provide to or mare users overa distance I uses radio frequency RF energy or waves to send and cals RF energy one form o electromagnetic energy Other Forms includa but are nat imted to sunlight and ways RF energy however shouid be wilh these ther ot slecuomaghetc energy which when used improper can cause ological damage Very high levels of xrays fr example can damage sues and geneti Experta in science engineering medicine haath and Industry work wih organizations to develop Sander for sate exposure to RF
18. Your Details Name Contact Porsor Company Name Address Telephone No FaxNo Email Addres How would you like to receive the update notification Through mail fax Manual No 6B16102H01 Kindly complete the Service Manual Feedback Form on the next page to help us ensure that you receive the most accurate and complete information Service Manual Feedback Form We believe that reports from users provide valuable information for producing quality manuals Kindly take a few moments to provide feedback on this manual Thank you for your cooperation Fax to 6 04 6124944 The Technical Publications Coordinator Media and Communications R amp D Department Motorola Penang 1 Please check the appropriato boxes incomplete Too Smat Wot Covered conning Corea Dus Annan ZI 2 How do you rate his particular Service Manual excellent very good good 3 Did this Service manual provide you with tho information necessary service and maintain the specific equipment very much so O generally yes to some extent Uno 4 We would appreciate any corrections recommendations for improving his manual Please include the specific page number s of the diagram or procedure in question 5 General commentsisuggestions Manual No 6816102401 DOCUMENT HISTOR
19. com Plor to shipping any radio back to ha appropiate Motorola waranty please contact Customer Resources Please see page 1 2 A returns must ba accompanied by a Warranty Clim Form sabe tom your Customer Serves representative Producta shou be Shipped hack the originai packaging or comedy packaged o ensure no damage occurs in ans Warranty Servise Support 22 23 24 After Warranty Period NOTE For service technicians in the Latin America Countries Region Ater Warranty Period claims in tha Lati America Countries reglon are hand tough the Motorola Authorized Service Provider SAM Network ted nearest SAM please Motorola Resource n Motorola motard com Al the Warranty period Motorola continues to support hs products in two ways 1 Motorola s Managed Technical Services MTS ofer a repa service to both end users and dealers at compative prices 2 MTS supplies individual pars and modules that can be purchased by dealers who are technically capable of performing faut analysis and Pieco Parts NOTE For service technicians in the Latin America Countries Region part orders should be directed your Parts Distributors NOTE For service technicians in the Europe Middle East and Africa Region Al part orders should be placed doct Motorola s local then organisation or via Motorola Onine at ip emsaanlne motorola com Some replacem
20. cy synthesizer contral and power supp ous 2 0 Receiver System HS E aie The receiver a double conversion super heterodyne wih fret IF frequency at 46 Hz and second Frequency at 480 24 Front End The front end consists ofa low pasa er pre aelactor fiter RF Amplfer and post selector ta The receive signal fom Pa antenna appled t TX LPF L109 L410 C428 CAZ C428 C429 CASO ten routed o an RF 0301 afer passing transmit recive switch CRT CR202 an ha pre selector The signal am the rent sampled around 130 at 22 2 24 RE AMP Q301 before being fitered again by the post selector before being aped to the mixer The pre selector and postselector are band ah er to remove unwanted signals First Mixer algal fom recevarfrontend channel into he Mixer 0302 base to be heterodyned win the rt local signal generated from he VCO to become te fr Frequency 5 Az This trst TF equency resonat a tank cut C328 L308 VHF or L306 and then channeled into ho pao ttes IF Amplifier Tho trst iF signal arsed approximately 1648 by the IF amp 0303 and channeled into IF IC 1201 ta be mixed with he second roquency 44 The frst IF frequency 5 M2 and he second lacal frequency 44 BAS are mised in U20 to produce the second IF freq
21. ements Compliance with RF Exposure Standards Your Motorola two way radio designed and tested to comet with a number of national and Internationa standards and isted blow for human exposure to radio frequency lecvomagnatic energy Ths rc compas min IEEE FCC nd ICNIRP exposure its for ccupatonalconroled RF exposure environments at operating Auty factors of up to 50 505 daten and by te FCC for occupational use only In tems of measuring RF energy for comptanoo with these exposure guidlines your radio generata measurable RF energy oniy wie i ansmting during aig not when or in standby mode NOTE The approved batteries supplied with Pis radio are rated for a 5 5 00 duty factor 5 tae 5 ten 20 standy even though ts rado complies wii FCC occupational exposure its and may operate at duy factor fup 50 ak Your Motorola two way radio comple wi the folowing RF energy exposure standards and Unt States Federal Communicatons Commission Code of Feral Regulations 47CFR part American Natonal Standards astute ANSI Institute of Electrical and Electronic Engineers Cos 1 1902 Insitute of Electrical and Electronic Engineers COS 1 1999 tion intemationai Commission Radiation Protection 1998 Minty of Health Canada Safety Code 8 Lts of Human Exposure to Radiofrequency Elec romagnotz Fils in the Frequency Range from
22. ent pat spare parta andlor product information can be ordered drect ifa ompite Motorola part numbers assigned 1o the part t ram Motorola s Managed Technical MTS known Motorola Rado Atermarket and Accessory Dision Ii no part number assigned he part ia not normally avalable trom Motorola f he part number ls appended wih an asterisk the pat sevcoable Motorola Depot oniy Ifa pars let is mot included is generaly means hat no useraen ceate parts are for that KE AN orders fr pareletomation shoul include the compete Mot rola entiation number A toes shouldbe decd to your MTS AAD ofice Please refer 1o your latest price pagas Technical Support NOTE For service technicians in the Latin America Counties Region Far Technical Support In the Lan America Counties Region lease open a case using the Conta Us feature within Motorola Online at htps businessontae motori cam NOTE For service technicians In the Europe Middle East and Africa Region For Technical Support in ne Europe Middle East and Region please see Append Motorola Support Detals forthe Europe Midde East and Regio on page At for more deta Technical support available to assist the dealeridstriutor in resoing any which may encountered Ina contact should be by telephone wherever posse When contacting Mota Tao Supp be prepared o pode a prouet
23. fiatona can nly be made bythe original product manufacturer Domet replace hang acres ina dos Crt ping may er EE A 2 WARNING 7 Do mot ansembl analy afe product in any way tht enposes he internat ne ARCOLA cai a eae oe pred T ate gen approved radia cols ari reino e br faarous tosh rect in ue nny orden NG Ts Ti ripara aed sevice dnd Areparconstttes something done internally to he unit that would bring back to orginal hams not considered as repairs are those In which an action performed on a unit wich dos not e casing of eunt be opened in manner hat exposes eterna etl Do Not Substitute Options or Accessories The Motorola communcatone equipment cefifed intrinsically safe by approving agency FM UL CSA CENEL EC tested as complete stem which const of e agency Approved portable Approved battery and Approved accesses or or both This Approved battery combination must be bene There muat be substitution of tems bs has been previously Approved win Motorola communications Approved contguratons are by the Approving Agency EM UL CSA CENELEC The tria safe Approval label to radio refers to the nina safe casa of rat radia product and the approved bates Ina can used wih hat System Tho manual PN referenced
24. ining is Use of communication devices while driving Aways check the aus and regulations on the use of radios ithe you drive ful attention t driving and ta the oa Use handeiree operation f valable Pu af road and park before making or answering cal driving candens or regulations so regure Operational Warnings Refert vence manufacturer s manual prior to instalation of electronic equipment ta ee a bop wie DD net pada a portabla radio ka over an i bg oi en Dg pian WARNING Al bags ini groat foree 1a pori radio x paced o te ar Bag deployment area D rado ma oe ropa in and chan sus NU ofthe vehicle Potentially Explosive Atmospheres Spake rap nr ohare ction hat ra Tt your rel Pr to onan ay na ia plenty ers steep kes type especialy qutd for une i su ree tni Sate er romps Factory Muti COA UL of CENELEC Bonet remove metal or charge are in uch areas Spark in potty explosive Matos ct ced ai pan or NR iy even toate The arean vt peril pose referred o above nie ng rae expone sup er re atm but oae ye Po A oa possible interference with basing operations ur of your radio when you are ea ceca blasting cap In ing ate or nares posted um ef tuy bey al aigna and uctor Operational Cautions A Doris ay pt aa ana apd rien cones ste Caution mls un ee eat her orc a
25. modei number he ser 25 Further Assistance From Yu can ao cin te Cutie Ha Ds rough flown vb aes Matra Sarden ox Approved Marla Disi car pror p EE prefere led iet VIDERES e peer ue eR 30 Radio Model Information onc mba ad stl ruris won ail eed ly do Yeu Rap panet uy tad pota and pra pagar Te Siar lee deme on pee i redd RO od I e arcane Tatia 1 1 Radio Mode Number sane AZHEAKOCEAAS We Mois ower Psat Chana Feature Gh Sones Fon Bana Dovel e Tove 9 eis eme mm mm en MD Europa Mss 40 Radio Features ers The folowing are features your radio has Normal Operation RXTPLDPLIOPL Ras CPS aci Chri User Detd PL TPL1 TPL2 TPLS Rad Rado Cling Same Low Baty dato Power Level Highton Programming Buton Mae ite Power Busy Channel Lock a BCLO ohne Sel Channel Spacing 2502254 Section 2 THEORY OF OPERATION 10 Overview 14 Purpose This section does the theory of operation or he Circuit Descgn for e radio At the same imo provides description ofthe ccu teary and analysis a the ado hardware design 12 General Description Me ae comprises of one PCB Til maln PCS contains tne RF and digital raus The VHE UE compkant handheld transceivers consists of a receiver a anam a phase locked Ion PLL teqven
26. n speaker Ater passing rough thi iter audio signal ie e emphaszedby 203 C212 ta get Eablet response The de emphasized audi signal passes ough volume conto SWIVOL an sapie to suficient level re apcaker by or Audio 0801 has mat ma function by the aud conl CPU UD pin 2 low he sudo amplifier goes to active mode pin 2 high C goes Irto mute mode 42 43 44 45 RX Sub Audible Decode Circuit Tho fitar 202 a 260Hz 8 order LPF to pass CTCSS OCS signals and to block any other signals Tho signals that paas te LPF fitr changes ts sub ne to logie signals in tha 0208 pass opera U202 D so thatthe microprocessor can decode the CTCSS and DGS TX Audio When he radio user pushes the PTT bution th microprocessor activates the ente transmiter section indudng he microphone The audio signal tm the microphone passes rough the 3 igh pass ter and Eva uring U104 C A at 0 pre emphasis function The pre amphasized audio signati adjusted to a proper level by 159 and passes tough a 6 order 3052 low pass iter U104 D U105 C beoe being modulate Wide and chanel spacing Contra the NIS gwich 0108 Sub Audible Encode Circuit Tho encode CTCSS and CDCSS mixes signals trom four ports of he microprocessor This nixed signal passes through 3 order 00H LPF 1108 8 obtain clear CTCSS and DCS signals Microprocessor tot control alionctoos
27. nd 1 403 425 MHZ UHF Band 1 403 425 MHz Schematic Diagram Section 6 UHF BAND 2 450 470 MHZ INFORMATION RE Cult Board and Schematic Diagram tor UHF Band 2 450 470 MHz 1 0 Circuit Board and Schematic Diagram for UHF Band 2 450 470 MHz 5 1 i B 8 Seh A B n i af m a ee fra E EZ UHF Band 2 450 470 MHz Main Board Top Side RF Board and Schematic Diagram for UHF Band 2 180 470
28. nd here qu t Circe ce ang am ay Wan gang ede a rct pue Sher oman he Intrinsically Safe Radio Information The nical safe approval unt refers to a product that has been approved as ntinscali safe by an approval agency lor example FM Approvals CSA UL of Cale and cores that a produet mest Agency mal safety standards for specii of hazardous asesiad locations potable rado that has been approved or safety wil nave Approval label tached othe rado deny the uni being Approved for epecled hazardous tmospheree Tha loei spectes ne hazardous long wih tne number of he batery at must be used The nina safe approval abel wil be located on Is portable Operational Cautions for Intrinsic Safe Equipment A Ez2 esed ae FAL O ESA GENELEC approved pon E X ar ya damage resp ac A eedem ori Caution Dar rg bak ir ar sch Contac sparing may wa ston d ciunt ar engen re ng An ors tre Warnings for Radios Approved as intrinsically Safe Rados must ship trom the Motorola manufacturing facity wih the hazardous atmosphere capability and the tins safety approval labeling FM UL CSA CENELEC Radios be upgraded and labeled once ey have been shipped 1o the feld modilcation changes units har ware trom ts origina design confguraton Mod
29. onigued Tor electromagnet compatta Facilities To avoid electromagnetic interference andr compatbaty confit tum of your radi in any where posed notices instruct you to do so Hospils or nal care faites may equipment mat is senstie to extemal RF energy Aircraft When instructed 1o do so tum of your radio when on board an aircraft Any use of a rado must be in accordance with applicable regulations per rino crew nstuctons Medical Devices Pacemakers The Advanced Medical Technology Associaton Advaled recommends that a minimum separation of ches 15 be between handheld wireless radio and a pacemaker ese rcommandatons ara consistent wi those of the US Food and Drug Adminstration Persons with pacemakers should lt ALWAYS Keep the rado mare 6 inches 15 centimeters rom he pacemaker when the fado a ON Not the racio in tha breast pocket Use me ear opposite me pacemaker to minimize he potental or interference Turn ne ras OFF f are any resson suspect inference taking pace Hearing Aids Some digital wireless radios may wth some hearing aids In the event of such interference you may want to consult your hearing ad manufacturer 1 decuss Other Medical Devices 1t you use any other personal medica device consult the manufacturer cf your device t determine NER aus shee on RF energy Your poca may be 1 atat you in obta
30. uency 455kHz The second IF frequency passes trough ceramic fee CF1 CF2 to nina undesired and demodulated by demodulator in U201 The ASSChz ceramic Mer consist of a wide CF1 and CF2 fiter The tering changed Jo Wido and band by tho switch SW Squeleh 201 has a fer that ites and has an intemal ampli hat amples he to make It a DC vonage in order contol he squelch system So fne noise leve under a he microprocessor 1101 in he radio detects the DC level and un mutes the radio the level a Over a troshl the microprocessor mutes P radio and PLL Syrien 30 31 32 33 Transmitter System and PLL Synthesizer s Hel ae a ereet L al 1 Te vansmiter consiste of Microphone Pre emghasia Drvers Power Amplfer Low Pass Finer Antenna Swich andan Auto Power Cont TX Power Stage The TX VCO output signal is channeled by tho T power stage a attanustor The attenuatoris style resister attenuator and s used fr station between tne VCO power airs The TX Power stage cont ot pre dnve Q401 drive amplfer G42 and taa amplifer 0403 Tha TX RF signal rom the atenuatr increased o around 2548 by he pre Ate and tre ame The Tx signal rom deve
31. way tom the eye Keeping the radio at a proper distance 1s important since RF exposures decrease wih merasng stance fm the men wom on the body alaya laco the radi in a Motorola approved ip haider asta cade or body harass fr hs product Using approved bod worn accessories porn because he use of nn Moro approved accessories may result n expose levela which exceed the FCC occupatonalconttted environment RF exposure mis You are nt using body wom accessory and are not Pa rado In he intended use posi ton e Tace ensure antenna and me redo are kept at least one inch 2 5 cntme tars rom the body when transiting Keeping he radios a proper distance s important because exposures decrease wth increasing distance fom antenna Approved Accessories Use only Motorcla approved supple or replacement antennas batteries and accessories Use of Hon loool approved antennes ates and accessories may exceed FCG EEE nd ICNIRP RF exposure Fora et of Motorola approved vit allowing wich ists approved accessories for your radio modal ipa motorcla conigavernmentandentrpse Additional Information Foe agatlonal infomation on exposure requirements or other waning Infrmaton vatt np han motor conical Electromagnetic Interference Compatibility NOTE Nati every electronic deuce is susceptbie electromagnetic ntarfrence EM 1f shielded designed or atterwise c
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