{
  "id": "t14g2-external-display",
  "version": "1.0.0",
  "title": "External display detection checks",
  "deviceFamily": "laptop",
  "modelId": "t14g2",
  "modelApplicability": {
    "id": "t14g2",
    "name": "ThinkPad T14 Gen 2 Intel",
    "family": "laptop",
    "revision": "Intel machine types 20W0 or 20W1",
    "os": "Windows 10/11, original Lenovo firmware. Labels vary between Windows versions; managed systems require IT approval for settings changes.",
    "region": "US-first; optional hardware varies by machine type.",
    "help": "Read the underside machine-type label or Lenovo Vantage device details locally. Confirm T14 Gen 2 Intel and 20W0/20W1. Keep the full serial number private.",
    "exclusions": [
      "ThinkPad T14 Gen 2 AMD",
      "ThinkPad T14 Gen 1",
      "ThinkPad T14s Gen 2",
      "ThinkPad T15"
    ],
    "sourceIds": [
      "lenovo-ug"
    ]
  },
  "exclusions": [
    "ThinkPad T14 Gen 2 AMD",
    "ThinkPad T14 Gen 1",
    "ThinkPad T14s Gen 2",
    "ThinkPad T15"
  ],
  "intent": "Compare one direct monitor connection before troubleshooting a docking station.",
  "category": "connections",
  "prerequisites": [
    "Built-in display works",
    "Monitor and cable match the selected connector"
  ],
  "tools": [
    "Powered monitor",
    "Compatible HDMI or USB-C video connection"
  ],
  "materials": [
    "A private place to keep your findings",
    "A current backup if the device is accessible"
  ],
  "checks": [
    {
      "id": "safety",
      "goal": "Separate unsafe hardware from routine preparation.",
      "question": "Any swelling, casing separation, liquid damage, smoke, burning smell, or damaged battery/adapter?",
      "sourceIds": [
        "lenovo-ug"
      ],
      "options": [
        {
          "id": "safe",
          "label": "No visible danger",
          "next": "check-1"
        },
        {
          "id": "danger",
          "label": "Yes, or suspected damage",
          "next": "stop"
        },
        {
          "id": "unknown",
          "label": "I cannot confirm",
          "next": "uncertain"
        }
      ]
    },
    {
      "id": "check-1",
      "goal": "Isolate the dock and cable.",
      "question": "Is the powered monitor directly connected through a compatible video path?",
      "sourceIds": [
        "lenovo-ug"
      ],
      "options": [
        {
          "id": "yes",
          "label": "Yes",
          "next": "check-2"
        },
        {
          "id": "no",
          "label": "No",
          "next": "attention"
        },
        {
          "id": "unknown",
          "label": "Not checked / unsure",
          "next": "uncertain"
        }
      ]
    },
    {
      "id": "check-2",
      "goal": "Record detection and output.",
      "question": "Does Windows detect the monitor and show usable video?",
      "sourceIds": [
        "lenovo-ug"
      ],
      "options": [
        {
          "id": "yes",
          "label": "Detected with video",
          "next": "ready"
        },
        {
          "id": "no",
          "label": "Not detected or no video",
          "next": "service"
        },
        {
          "id": "unknown",
          "label": "Not checked / unsure",
          "next": "uncertain"
        }
      ]
    }
  ],
  "branches": [
    {
      "from": "safety",
      "answer": "safe",
      "to": "check-1"
    },
    {
      "from": "safety",
      "answer": "danger",
      "to": "stop"
    },
    {
      "from": "safety",
      "answer": "unknown",
      "to": "uncertain"
    },
    {
      "from": "check-1",
      "answer": "yes",
      "to": "check-2"
    },
    {
      "from": "check-1",
      "answer": "no",
      "to": "attention"
    },
    {
      "from": "check-1",
      "answer": "unknown",
      "to": "uncertain"
    },
    {
      "from": "check-2",
      "answer": "yes",
      "to": "ready"
    },
    {
      "from": "check-2",
      "answer": "no",
      "to": "service"
    },
    {
      "from": "check-2",
      "answer": "unknown",
      "to": "uncertain"
    }
  ],
  "steps": [
    {
      "id": "step-1",
      "text": "Confirm Intel T14 Gen 2. Its connector layout differs from AMD; use the correct manual’s Intel side view.",
      "sourceIds": [
        "lenovo-ug"
      ],
      "locator": "Printed pp. 4–5 side views / pp. 16–17 external display"
    },
    {
      "id": "step-2",
      "text": "Connect one powered monitor directly by a compatible HDMI or USB-C video path. Confirm the monitor’s selected input; remove a dock from the comparison.",
      "sourceIds": [
        "lenovo-ug"
      ],
      "locator": "Printed pp. 4–5 side views / pp. 16–17 external display"
    },
    {
      "id": "step-3",
      "text": "Right-click the Windows desktop and open Display settings. Follow the on-screen detection control if the display is not detected.",
      "sourceIds": [
        "lenovo-ug"
      ],
      "locator": "Printed pp. 4–5 side views / pp. 16–17 external display"
    },
    {
      "id": "step-4",
      "text": "Compare duplicate/extend settings and note whether the direct monitor works before reconnecting a dock. Do not assume all cable types or docks support the same resolution.",
      "sourceIds": [
        "lenovo-ug"
      ],
      "locator": "Printed pp. 4–5 side views / pp. 16–17 external display"
    }
  ],
  "outcomeChecks": [
    "Save the direct connection and display mode that worked. Check dock-specific support separately.",
    "If a known compatible direct monitor remains absent, contact Lenovo and the monitor vendor. No port replacement is justified by this task alone."
  ],
  "stopConditions": [
    "Stop using and charging a swollen or damaged battery. Do not open, compress, puncture, or attempt battery removal. Contact the manufacturer or a qualified service provider.",
    "Disconnect a damaged accessory if it is safe to do so. Do not open a mains power adapter.",
    "Save accessible data before restarting. Do not reset, erase, flash firmware, bypass a lock, or open the enclosure in this task."
  ],
  "terminals": {
    "ready": {
      "type": "preparation_saved",
      "title": "Checks recorded",
      "text": "Save the direct connection and display mode that worked. Check dock-specific support separately."
    },
    "service": {
      "type": "service_needed",
      "title": "Arrange service or support",
      "text": "If a known compatible direct monitor remains absent, contact Lenovo and the monitor vendor. No port replacement is justified by this task alone."
    },
    "attention": {
      "type": "maintenance_possible",
      "title": "Complete the preparation first",
      "text": "Review the relevant step above. Gather the missing item or perform the reversible check, then go back and update your answer. A missing prerequisite does not identify a failed part."
    },
    "uncertain": {
      "type": "preparation_saved",
      "title": "Save an incomplete preparation record",
      "text": "Your observation is still unknown. Save the unanswered checks and use the linked support instructions or a qualified provider to confirm the next step."
    },
    "stop": {
      "type": "service_needed",
      "title": "Stop and get professional help",
      "text": "Do not charge, use, open or press on a device with suspected battery damage. Do not handle hot or smoking equipment. Seek the manufacturer’s safety and service guidance; use local emergency services if there is an immediate fire risk."
    }
  },
  "sources": [
    {
      "id": "lenovo-ug",
      "title": "ThinkPad T14 Gen 2 user guide",
      "url": "https://download.lenovo.com/pccbbs/mobiles_pdf/t14_gen2_t15_gen2_p14s_gen2_p15s_gen2_ug_en.pdf",
      "locator": "Printed pp. 3–7, 9, 12–16, 19, 23–25, 33–34, 62–67, 71",
      "purpose": "Intel connector layout, Vantage, external peripherals and service preparation",
      "checkedAt": "2026-10-04",
      "reuse": "Reference only. Original paraphrase; no copied images or manual pages.",
      "licenseStatus": "Public support document; no redistribution license assumed."
    }
  ],
  "assets": [
    {
      "path": "/assets/decision-flow.svg",
      "kind": "Original schematic",
      "alt": "Model match, danger check, observation, then preparation or service"
    }
  ],
  "relatedIds": [
    "t14g2-usbc-charge",
    "t14g2-vantage-diagnostics",
    "t14g2-camera-shutter"
  ],
  "estimatedDuration": {
    "minutes": 15,
    "label": "Planning estimate; excludes charging, cooling, backups and service. Not a measured repair time."
  }
}