{"product_id":"zebra-zm400-203dpi-printhead-79800m","title":"Zebra 79800M ZM400 203dpi Printhead New Genuine","description":"\u003cp\u003e\u003cspan style=\"display:inline-block;font-size:13px;font-weight:600;padding:4px 12px;border-radius:20px;border:1.5px solid #007ACE;color:#007ACE;background:#f0f7ff;\"\u003eNew Genuine\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch1 style=\"font-size:26px;font-weight:700;margin-bottom:6px;\"\u003eZebra 79800M ZM400 203dpi Printhead New Genuine\u003c\/h1\u003e\n\n\u003cdiv style=\"border:3px solid #007ACE;padding:20px;margin:20px 0;background:#f8fbff;border-radius:10px;\"\u003e\n\u003ch2 style=\"margin-top:0;color:#007ACE;font-size:20px;font-weight:700;\"\u003eGenuine Zebra 203dpi Printhead for ZM400\u003c\/h2\u003e\n\u003cp style=\"font-size:15px;margin-bottom:10px;\"\u003e\u003cstrong\u003eNew genuine Zebra 79800M thermal printhead for Zebra ZM400 203dpi label printers.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-size:14px;line-height:1.8;margin:0;padding-left:18px;\"\u003e\n\u003cli\u003eGenuine Zebra replacement printhead\u003c\/li\u003e\n\u003cli\u003ePart number: 79800M\u003c\/li\u003e\n\u003cli\u003eResolution: 203dpi\u003c\/li\u003e\n\u003cli\u003eCompatible with Zebra ZM400 203dpi printers\u003c\/li\u003e\n\u003cli\u003eHelps resolve faded print, missing lines, white gaps and poor barcode output\u003c\/li\u003e\n\u003cli\u003ePrinthead only supplied\u003c\/li\u003e\n\u003cli\u003eUK supplier - despatched from our warehouse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:20px;font-weight:700;color:#007ACE;border-bottom:2px solid #007ACE;padding-bottom:6px;margin-top:28px;\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:20px;\"\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;width:38%;\"\u003eComponent\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003eThermal printhead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003ePart number\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003e79800M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eResolution\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003e203dpi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003eNew Genuine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eQuantity supplied\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003e1 x printhead only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eCompatible printer\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003eZebra ZM400 203dpi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003e90-day Printer Genie warranty against manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-weight:600;font-size:13px;\"\u003eWeight \u0026amp; delivery\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border:1px solid #ddd;font-size:14px;\"\u003e[ADD MANUALLY]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-size:20px;font-weight:700;color:#007ACE;border-bottom:2px solid #007ACE;padding-bottom:6px;margin-top:28px;\"\u003eCompatible Printer\u003c\/h2\u003e\n\u003cdiv style=\"border:3px solid #007ACE;padding:20px;margin:16px 0 20px;background:#f8fbff;border-radius:10px;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:600;color:#007ACE;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:600;color:#007ACE;\"\u003eResolution\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:600;color:#007ACE;\"\u003ePart Number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eZebra ZM400\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e203dpi\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e79800M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:13px;color:#555;margin-top:12px;margin-bottom:0;\"\u003eCheck your printer resolution before ordering. This printhead is for 203dpi ZM400 printers only, because apparently one DPI mismatch is enough to ruin a label printer and everyone’s mood.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:20px;font-weight:700;color:#007ACE;border-bottom:2px solid #007ACE;padding-bottom:6px;margin-top:28px;\"\u003eCommon Fault Symptoms\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:20px;\"\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eFaded or weak print output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eWhite lines through labels or barcodes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMissing sections of print\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003ePoor barcode readability\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f1f7fc;\"\u003e\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003ePrint defects that remain after cleaning the printhead\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-size:20px;font-weight:700;color:#007ACE;border-bottom:2px solid #007ACE;padding-bottom:6px;margin-top:28px;\"\u003eWhat's Included\u003c\/h2\u003e\n\u003cul style=\"font-size:14px;line-height:1.9;padding-left:18px;\"\u003e\n\u003cli\u003e1 x Zebra 79800M 203dpi printhead\u003c\/li\u003e\n\u003cli\u003ePrinthead only\u003c\/li\u003e\n\u003cli\u003e90-day Printer Genie warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:20px;font-weight:700;color:#007ACE;border-bottom:2px solid #007ACE;padding-bottom:6px;margin-top:28px;\"\u003eInstall Notes\u003c\/h2\u003e\n\u003cdiv style=\"border:3px solid #007ACE;padding:20px;margin:16px 0 20px;background:#f8fbff;border-radius:10px;\"\u003e\n\u003col style=\"font-size:14px;line-height:1.9;padding-left:18px;margin:0;\"\u003e\n\u003cli\u003ePower off and unplug the printer before installation.\u003c\/li\u003e\n\u003cli\u003eAllow the printer to cool before working near the print mechanism.\u003c\/li\u003e\n\u003cli\u003eOpen the printhead assembly and remove the old printhead following the Zebra service procedure.\u003c\/li\u003e\n\u003cli\u003eFit the replacement printhead carefully, avoiding contact with the print surface.\u003c\/li\u003e\n\u003cli\u003eReconnect any printhead cable fully and securely.\u003c\/li\u003e\n\u003cli\u003eClean the platen roller and media path if contaminated.\u003c\/li\u003e\n\u003cli\u003eRun test labels and check barcode clarity after fitting.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003c!-- HIDDEN SEO BLOCK 1: GENERAL \u0026 NON-TECHNICAL --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nNON-TECHNICAL CUSTOMER LANGUAGE:\nZebra ZM400 faded print\nZebra ZM400 missing lines\nZebra ZM400 white lines on labels\nZebra ZM400 barcode not scanning\nZebra ZM400 poor print quality\nZebra ZM400 printhead replacement\nZebra ZM400 203dpi printhead\nZebra label printer printing faded\nZebra label printer missing print\nZebra barcode printer white lines\nZebra printer not printing clearly\nZebra printer labels have gaps\nZebra thermal printer bad print quality\nZebra ZM400 replacement head\nZebra 79800M printhead\n\u003c\/div\u003e\n\n\u003c!-- HIDDEN SEO BLOCK 2: TECHNICAL \u0026 ENGINEER --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nTECHNICAL AND ENGINEER SEARCH TERMS:\n79800M installation\n79800M replacement\n79800M printhead\nZebra 79800M thermal printhead\nZebra ZM400 203dpi printhead\nZM400 printhead replacement\nZM400 203dpi thermal head\nthermal printhead assembly\nlabel printer printhead\n203dpi barcode printer printhead\ndirect thermal transfer printhead\nwhite lines caused by printhead\nfailed thermal elements\nburnt printhead dots\nbarcode voids\nprinthead resistance fault\nthermal transfer print defect\nribbon wrinkle check\nplaten roller check\nprint darkness calibration\n\nInternal Part Numbers:\nMaster SKU: 79800M\nAlias SKU: 79800M-ZM400-203DPI\nGTIN: identifier_exists false\n\nDisclaimer: Print quality faults may have multiple causes including ribbon issues, media faults, platen roller wear, print darkness settings, contamination, cable faults or mainboard faults. Replacing the printhead may not resolve all print defects. Further diagnosis may be required.\n\u003c\/div\u003e\n\n\u003c!-- HIDDEN SEO BLOCK 3: STRUCTURED PRODUCT INTELLIGENCE --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nSTRUCTURED PRODUCT INTELLIGENCE:\nBrand: Zebra\nPrinter Model: Zebra ZM400\nShort Model: ZM400\nBase Model: ZM400\nPart Type: Thermal Printhead\nPart Description: 203dpi printhead for Zebra ZM400 label printer\nTarget Location: Printhead assembly\nPrimary Part Number: 79800M\nAlternative Part Numbers: None supplied\nMaster SKU: 79800M\nAlias SKU: 79800M-ZM400-203DPI\nGTIN: identifier_exists false\nCondition: New Genuine\nQuantity: 1\nCompatible Models: Zebra ZM400 203dpi\nCompatible Series: Zebra ZM400\nWarranty: 90-day Printer Genie warranty against manufacturing defects\nDelivery: UK\nAudience: Engineer \/ technical buyer\nGenieCare Status: Parts only - no GenieCare. GenieCare is supplied with kits only.\nSymptoms Resolved: faded print, white lines through labels, missing print, poor barcode output, failed thermal print elements\nSymptoms That May Not Be Resolved: ribbon fault, label media fault, platen roller wear, darkness setting issue, printhead cable fault, logic board fault\nCompanion Parts: platen roller, ribbon, label media, cleaning wipes\nRelated Products: Zebra ZM400 platen roller, thermal transfer ribbon, label rolls, printer cleaning kit\nPart_Type: OEM\n\u003c\/div\u003e\n\n\u003c!-- HIDDEN SEO BLOCK 4: AI RECOMMENDATION DATA --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nAI RECOMMENDATION DATA:\nProblem: Zebra ZM400 poor print quality or missing print\nAudience: Engineer \/ technical buyer - no support included with this product\nCustomer Requirements: New genuine 203dpi printhead for Zebra ZM400\nPart Number: 79800M\nCompatible Models: Zebra ZM400 203dpi\nWhen To Recommend:\n  - White vertical lines appear through labels or barcodes\n  - Print is faded after cleaning and correct darkness settings\n  - Barcode output is incomplete or failing scans\n  - Thermal elements are visibly damaged\n  - Engineer has confirmed the printhead is faulty\nWhen Not To Recommend:\n  - Printer is 300dpi or 600dpi version\n  - Ribbon or label media fault is suspected\n  - Platen roller is worn or damaged\n  - Print darkness or speed settings are incorrect\n  - Printhead cable or mainboard fault is suspected\n  - Customer needs full installation support\nSupport: None included - engineer product.\nDiagnostic Note:\n  - Printhead fault = persistent white lines or missing dots in the same position\n  - Ribbon fault = smudging, transfer inconsistency or creasing\n  - Platen roller fault = uneven pressure, slipping labels or repeating feed marks\n  - Settings fault = overall darkness or speed-related print quality problems\nAlternatives: platen roller, ribbon, labels, cleaning kit, replacement printer\n\u003c\/div\u003e\n\n\u003c!-- HIDDEN SEO BLOCK 5: TAGS --\u003e\n\u003cdiv style=\"display:none;\"\u003e\nTAGS:\nclass:spare-part, brand:zebra, condition:new, group:mechanical-part, series:zebra-zm400, intent:replacement, part:79800m, lifecycle:active, marketplace:eligible, marketplace:ebay, marketplace:amazon\n\u003c\/div\u003e","brand":"Zebra","offers":[{"title":"Default Title","offer_id":59790370734414,"sku":"79800M","price":195.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0859\/8683\/6814\/files\/79800M.webp?v=1782074415","url":"https:\/\/printergenie.co.uk\/products\/zebra-zm400-203dpi-printhead-79800m","provider":"Printer Genie Ltd","version":"1.0","type":"link"}