找不到印表機The app cannot find the printer
- 確認印表機電源開著,面板燈是亮的。
- 確認連接線兩端都插緊 — 印表機那一端也要檢查,它比較容易鬆。
- 確認那條線不是純充電線。
- 以上都對還是找不到,把印表機關掉再開,然後重開 App。
★ 純充電線是最常見的原因。外觀跟傳輸線一模一樣,插上去印表機也會亮燈充電,但它沒有資料線,所以 App 永遠掃不到。手邊有另一條線就換一條試試看。
- Check the printer is powered on and its panel light is lit.
- Check both ends of the cable are firmly seated — including the printer end, which works loose more easily.
- Make sure the cable is not a charge-only cable.
- If all of the above are fine, power-cycle the printer, then restart the app.
★ A charge-only cable is the most common cause. It looks identical to a data cable and the printer will still light up, but it carries no data lines, so the app will never see the printer. Try a different cable.