[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-560884-105":59,"doc-detail-560884-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","tv4ks-service-mode-factory-key-service-entry-geometry-adjust-cut-white-balance","TV4KS SERVICE MODE - Factory Key Service Entry - Geometry Adjust - Cut White Balance","","Service-mode entry and adjustment instructions for a TV4KS chassis. Covers how to press the SERVICE/FACTORY key on the handset to open Geometry Adjust, distinguishes 50Hz vs 60Hz variants, and explains navigating adjustment items via channel and volume keys. Provides a procedure to switch from Geometry Adjust to CUT/White Balance, and includes parameter adjustment guidance such as B+ voltage measurement and VR901 tuning, STAND-BY power supply checks, and RF AGC adjustment steps with required test signals and meter connections.",{"@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/tv4ks-service-mode-factory-key-service-entry-geometry-adjust-cut-white-balance/560884/",{"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/tv4ks-service-mode-factory-key-service-entry-geometry-adjust-cut-white-balance/560884.png","ImageObject",300,407,{"name":92,"@type":93},"Đào","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/octet-stream","2026-10-23","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How do you enter the TV4KS SERVICE/FACTORY service menu?","Question",{"text":112,"@type":113},"Turn on the main power switch, then press the FACTORY key on the handset for about 3 seconds to display the Geometry Adjust screen.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What changes between 50Hz and 60Hz signals in the service menu?",{"text":117,"@type":113},"With a 50Hz signal, Geometry Adjust shows 100i; with a 60Hz signal it shows 60P instead of 100i.",{"name":119,"@type":110,"acceptedAnswer":120},"How is B+ adjustment performed in this procedure?",{"text":121,"@type":113},"Receive a standard color bar signal, select NORMAL mode with PP, measure at C922 to ground using a digital voltmeter, then adjust VR901 so the reading matches the listed table values.","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},560884,1792165075,{"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":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":81},1374402968488,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","TV4KS SERVICE MODE\n\n1. A szervizt醰ir醤y韙髇, vagy a kezel鮥 t醰ir醤y韙髇 a SERVICE gombot (mely alul az utols sorban bal oldalon, rejtve tal醠hat) kell megnyomni. \nEz a gomb az SC3004 IC 4-es 閟 11-es l醔a k鰖鰐t teremt z醨醩t. (Egyes t醰ir醤y韙髃 ilyen gombhelyet nem tartalmaznak, csak a szervizt醰ir醤y韙.)\nSzervizbel閜閟re haszn醠hat m間 (a sz醡韙骻閜pel programozhat) 凪ade for You nev t醰ir醤y韙 BACK gombja, ha a 97-es k骴ot programoztuk f鰈 r a PC-vel.\n\n2. Az 50 Hz-es lengyel Grundigok szerv韟bel閜閟e:\n1. 羖l韙suk be a SLEEP TIMER id鮶韙閟閠 00:50 閞t閗re\n2. Nyomjuk meg, 閟 tartsuk benyomva a taszton a V+ gombot, amig a szervizmen megjelenik\n3. A szervizmen 1-2-...5 almen黭b鮨 醠l. Ezeken l閜kedni az OK gomb nyomogat醩醰al lehet\n4. Navig醠ni a P+, P-  t醰ir醤y韙 gombokkal tudunk\n5. Az 閞t閗eket a V+, V- t醰ir醤y韙 gombokkal tudjuk m骴os韙ani\n6. Memoriz醠醩 閟 kil閜閟 a PP gombbal \n\n3. M醩k閜p:\n\nA Grundig STF72-1010/7  s a Grundig =STF72-1002/7 k閟z黮閗ek el間g egyedi gy醨t醩uak, Tauras TV4KS sasszival. Ezekn閘 a szerviz menube jut醩 csak szerviz t醰szab醠yz髒al lehets間es.\n\nVagy: egy megold醩, az eredeti t醰ad髏 sz閠szedni, a 25-閟 a 12-es pin-t kivezetni kis vezet閗kel, 閟 鰏szenyomva = szervizt醰ad.\n\nVan m間 infom erre a tipusra, de angolul.\n\nChassis Adjustment:\nGeneral description of method to enter into SERVICE MENU and ADJUST MENU:\n?. Turn on the Main Power Switch, then press 揊ACTORY key about 3seconds on the handset(service remote unit, please refer to the attached drawing). The 揌PS ----------- Geometry Adjust will be displayed on the screen : When receiving signal is 50Hz, the 100i will be displayed under the 揋eometry Adjust, otherwise, when receiving the 60Hz signal, the 60P will be displayed instead of 100i.\n?. Use volume + and - keys to adjust the parameter.\n?. Pressing channel 揚+ and 揚- key select other items;\n?. On Geometry Adjust mode, refer to the follow table 1 to find adjustment items.\n?. press 揊ACTORY KEY again, The 揜CUT -----------White Balance will be displayed on the screen:\n?. On White Balance mode, refer to the follow table1 to find adjustment items.\n?. repeat the above step ?.and ?. .\n?. press 揊ACTORY KEY to exit the adjustment menu.\n1. B+ adjustment:\n?. Receive standard colour bar signal.\n?. Press key \"PP.\" to select 揘ORMAL mode.\n?. Connect digital voltmeter between of C922 and GND.\n?. +B voltage:\nCRT BRAND CRT TYPE B+ (C922)\nTHOMSON A68ELM021x121 133.0V\nConnect the DC digital voltmeter to the C922 on main PCB. Receving the Color bar signal, and press the P.P button to select 揘ormal status. Adjust the VR901, to make the reading of the DC digital voltmeter as above table.\nIC901 power check:\n?. Connect probe of oscillograph to C911+ and GND;\n?. The read-out voltage on oscillograph must be directly voltage, the value should be 10.5~15VDC.\n2. STAND-BY power supply check\na. Connect the digital voltmeter between C924 and GND;\nb. Press power key on remote unit to make sure the TV is on standby mode;\nc. The read-out on the digital voltmeter must be 8.0~10VDC\n3. Adjustment for RF AGC:\n?. Receive RF signal (623dB礦).\n?.Press factory key to enter Geometry Adjust MENU.\n?. Press 1 keys on the remote handset and on-screen display will be shown as following:\n\n   ","cbCaikjMUeZgeli9","https://ap.wps.com/l/cbCaikjMUeZgeli9","txt",3336,"English","# Chassis service mode entry\n## Factory key / SERVICE key steps\n## Geometry Adjust and item navigation\n## CUT / White Balance menu\n# Adjustment procedures\n## B+ adjustment\n## STAND-BY power supply check\n## RF AGC adjustment","[{\"question\":\"How do you enter the TV4KS SERVICE/FACTORY service menu?\",\"answer\":\"Turn on the main power switch, then press the FACTORY key on the handset for about 3 seconds to display the Geometry Adjust screen.\"},{\"question\":\"What changes between 50Hz and 60Hz signals in the service menu?\",\"answer\":\"With a 50Hz signal, Geometry Adjust shows 100i; with a 60Hz signal it shows 60P instead of 100i.\"},{\"question\":\"How is B+ adjustment performed in this procedure?\",\"answer\":\"Receive a standard color bar signal, select NORMAL mode with PP, measure at C922 to ground using a digital voltmeter, then adjust VR901 so the reading matches the listed table values.\"}]","TV4KS SERVICE MODE - Factory Key Service Entry - Geometry Adjust - Cut White Balance | TXT",1791804395]