[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-661764-105":59,"doc-detail-661764-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","kenwood-tm-741-serv-manual-service-manual","KENWOOD--TM-741-Serv-Manual - Service Manual","","Service manual covering the KENWOOD TM-741A/E series, including overview, circuit descriptions, and component-level explanations for transmitter/receiver units and related modules. Provides semiconductor data references, parts lists, exploded views, packing guidance, and adjustment procedures. Contains PC board views and schematic diagrams for control and display units, plus block/level diagrams, DTU-2 (DTMF), TSU-7 (CTCSS), and MC-45/MC-45DM microphones. Includes band/option unit configuration and unit counts by model destination codes, for North America, Europe, and other regions.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/kenwood-tm-741-serv-manual-service-manual/661764/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/kenwood-tm-741-serv-manual-service-manual/661764.png","ImageObject",300,407,{"name":92,"@type":93},"Oliver","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What sections are included in the TM-741A/E service manual?","Question",{"text":112,"@type":113},"The manual includes overview, circuit descriptions, component descriptions, semiconductor data, parts lists, exploded views, packing, adjustment procedures, and schematic/board diagrams for multiple units.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the manual describe the transmitter/receiver signal generation?",{"text":117,"@type":113},"It explains direct oscillation to produce the desired frequency and direct frequency modulation using a varicap diode in the frequency modulator circuit.",{"name":119,"@type":110,"acceptedAnswer":120},"Which optional band units can be installed for the TM-641A/TM-741A/TM-741E models?",{"text":121,"@type":113},"The document lists optional band units such as UT-28S, UT-50S, UT-220S, UT-440S, and UT-1200, with model-specific combinations and applicable installation guidance.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},661764,1793179987,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},8796095461610,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","| A   | KNOB(CALL)  \u003Cbr>K27-3110-04   | KNOB(SHIFT)  \u003Cbr>K27-3118-04   | KNOB(REV)  \u003Cbr>K27-3114-04   | KNOB(LOW)  \u003Cbr>K27-3116-04   |\n| --- | --- | --- | --- | --- |\n| B   | KNOB(F)  \u003Cbr>K27-3111-04   | KNOB(TONE)  \u003Cbr>K27-3113-04   | KNOB(DTSS)  \u003Cbr>K27-3115-04   | KNOB(MUTE)  \u003Cbr>K27-3117-04   |\n\nOVER VIEW………………………………………………………………2  \nCIRCUIT DESCRIPTION……………………………………………………3  \nDESCRIPTION OF COMPONENTS…………………………41  \nSEMICONDUCTOR DATA………………………………………58  \nPARTS LIST……………………………………………………………………………61  \nEXPLODED VIEW…………………………………………………………105  \nPACKING…………………………………………………………………………110  \nADJUSTMENT…………………………………………………………113  \nPC BOARD VIEWS/SCHEMATIC DIAGRAM  \nCONTROL UNIT (X53-331X-XX)…………………………126  \nDISPLAY UNIT (X54-312X-XX)……………………128  \nSCHEMATIC DIAGRAM……………………………………129  \n28M TX-RX UNIT(X57-3790-01)…………………………133  \n50M TX-RX UNIT (X57-3800-01)…………………………139  \nTM-641A  \nDownloaded by□  \nAmateur Radio Directory□  \nTM-741A/E  \nwww.hamdirectory.info  \nSERVICE MANUAL  \n1991-9 PRINTED IN JAPAN  \nB51-8139-00(A) 1599.  \nMICROPHONE*  \n* Refer to parts list on page 62  \nPhoto is TM-641A  \nCONTENTS  \n144M TX-RX UNIT (X57-3580-12)………………………143  \n220M TX-RX UNIT (X57-3810-10)………………………147  \n430/440M TX-RX UNIT (X57-359X-XX)……………151  \n1200M TX-RX UNIT (X57-3600-11)……………………155  \nBLOCK DIAGRAM………………………………………159  \nLEVEL DIAGRAM………………………………………………………167  \nDTU-2(DTMF UNIT)………………………………………………171  \nTSU-7(CTCSS UNIT)………………………………………………173  \nMC-45(MULTI FUNCTION MICROPHONE)…175  \nMC-45DM(MULTI FUNCTION MICROPHONE  \nWITH AUTOPATCH)……………………………………………176  \nPK-4K/L (PANEL SEPARATE KIT K:4M,L:7M).177  \nUT-28S/50S/1200 SPECIFICATION………………………178  \nSPECIFICATION………………………………………BACKCOVER  \nI V-64TA//4TA/741EOVERVIEW  \n# List of Destinations\n\n\n| Model   | Destination   | Destination code   |\n| --- | --- | --- |\n| TM-641A   | North America   | K   |\n| TM-741A   | North America   | K   |\n| TM-741A   | Canada   | P   |\n| TM-741E   | Europe   | E   |\n| TM-741A   | Other countries   | M   |\n| TM-741A   | Other countries   | M2   |\n\nUnits for Each Model and Destination  \n\n| Parts No.   | Unit name   | TM-741A/E   |  |  |  |  | TM-641A   | Band Units   |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  |  | UT-28S    | UT-50S    | UT-220S   |  UT-440S   | UT-1200   |\n|  |  | K   | P   | E   | M   | M2   | K   | M   | M   | K   | K   | M   |\n| X53-3310-12   | Control unit   | 1   | 1   |  | 1   | 1   | 1   |  |  |  |  |  |\n| X53-3312-71   | Control unit   |  |  | 1   |  |  |  |  |  |  |  |  |\n| X54-3120-11   | Display unit   | 1   | 1   |  |  |  | 1   |  |  |  |  |  |\n| X54-3120-21   | Display unit   |  |  |  | I   |  |  |  |  |  |  |  |\n| X54-3120-22   | Display unit   |  |  |  |  |  | 1   |  |  |  |  |  |\n| X54-3122-71   | Display unit   |  |  | 1   |  |  |  |  |  |  |  |  |\n| X57-3580-12   | 144 TX-RXunit   | 1   | 1   | 1   | 1   | 1   | 1   |  |  |  |  |  |\n| X57-3590-12   | 440 TX-RX unit   | 1   | 1   |  |  |  |  |  |  |  | 1   |  |\n| X57-3590-22   | 430 TX-RX unit   |  |  |  | 1   | I   |  |  |  |  |  |  |\n| X57-3592-72   | 430 TX-RX unit   |  |  | 1   |  |  |  |  |  |  |  |  |\n| X57-3600-11   | 1200 TX-RX unit   |  |  |  |  |  |  |  |  |  |  | 1   |\n| X57-3790-01   | 28 TX-RX unit   |  |  |  |  |  |  | 1   |  |  |  |  |\n| X57-3800-01   | 50 TX-RXunit   |  |  |  |  |  |  |  | 1   |  |  |  |\n| X57-3810-10   | 220 TX-RX unit   |  |  |  |  |  | 1   |  |  | 1   |  |  |\n\n# BAND UNITS\n\nAny of the following optionalband units may be installedin the TM-641A741A741E.  \nThe same instructions apply for the Tri-Bander as for the  \nDual-bander.  \n|  | OPTIONAL BAND UNIT   |\n| --- | --- |\n| TM-641A  \u003Cbr>U.S.A.version   | UT-28S UT-50S UT-440S UT-1200   |\n| TM-741A  \u003Cbr>U.S.A.version   | UT-28S  \u003Cbr>UT-50S UT-220S UT-1200   |\n| TM-741A   | UT-28S UT-50S UT-1200   |\n| TM-741E   | UT-28S  \u003Cbr>UT-50S UT-1200   |\n\n# ● Shift-register circuit\n\nTable 3  \n# ● ATT circuit\n\nIf there is cross modulation,the ATT circuit operates  \n# ● Ou","cbCaiqtSEzW5DxSN","https://ap.wps.com/l/cbCaiqtSEzW5DxSN","pdf",15499841,172,"English","# OVERVIEW\n# CIRCUIT DESCRIPTION\n## DESCRIPTION OF COMPONENTS\n## SEMICONDUCTOR DATA\n## PARTS LIST\n## EXPLODED VIEW\n## PACKING\n## ADJUSTMENT\n# PC BOARD VIEWS/SCHEMATIC DIAGRAM\n## CONTROL UNIT (X53-331X-XX)\n## DISPLAY UNIT (X54-312X-XX)\n## SCHEMATIC DIAGRAM\n## 28M TX-RX UNIT (X57-3790-01)\n## 50M TX-RX UNIT (X57-3800-01)\n## 144M/220M/430-440M/1200M TX-RX UNITS\n## DTU-2 (DTMF UNIT)\n## TSU-7 (CTCSS UNIT)\n## MC-45 / MC-45DM (MULTI FUNCTION MICROPHONE)\n## PK-4K/L (PANEL SEPARATE KIT)\n## UT-28S/50S/1200 SPECIFICATION\n## SPECIFICATION (BACKCOVER)\n# BAND UNITS AND OPTIONS\n## OPTIONAL BAND UNIT CONFIGURATION\n# TX-RX BLOCKS\n## Modulator circuit\n## Shift-register circuit\n## ATT circuit","[{\"question\":\"What sections are included in the TM-741A/E service manual?\",\"answer\":\"The manual includes overview, circuit descriptions, component descriptions, semiconductor data, parts lists, exploded views, packing, adjustment procedures, and schematic/board diagrams for multiple units.\"},{\"question\":\"How does the manual describe the transmitter/receiver signal generation?\",\"answer\":\"It explains direct oscillation to produce the desired frequency and direct frequency modulation using a varicap diode in the frequency modulator circuit.\"},{\"question\":\"Which optional band units can be installed for the TM-641A/TM-741A/TM-741E models?\",\"answer\":\"The document lists optional band units such as UT-28S, UT-50S, UT-220S, UT-440S, and UT-1200, with model-specific combinations and applicable installation guidance.\"}]","KENWOOD--TM-741-Serv-Manual - Service Manual | PDF",433]