\n Note: the Fn key and the Print Screen (PrtSc) key may not be detected by your browser,
\n so they will not light up. All other keys (letters, numbers, arrows, and the numeric keypad)
\n can be tested here.\n <\/p>\n<\/p><\/div>\n<\/div>\n
\n
Fujitsu laptop keyboard problems \u2013 how to use this test<\/h2>\n
\n This page is designed for owners of Fujitsu laptops \u2013 including
\n Fujitsu Lifebook<\/strong>, Celsius mobile workstations and other Fujitsu
\n business notebooks \u2013 who want to check whether their built-in keyboard is still
\n working correctly. Press every key on your Fujitsu keyboard and watch if the
\n corresponding key on the layout above lights up.\n <\/p>\n1. Single keys on your Fujitsu keyboard not responding<\/h3>\n
\n If only one or two keys do not light up in this test, the most common causes are:\n <\/p>\n
\n- A worn-out switch under the key after years of office or field use.<\/li>\n
- Dust or small particles trapped under the keycap.<\/li>\n
- A key that has been hit too hard or damaged during cleaning or transport.<\/li>\n<\/ul>\n
\n Try gently cleaning around the key and repeat the test. If it still does not register,
\n the internal Fujitsu keyboard assembly is likely defective and should be replaced.\n <\/p>\n
2. A full row or block of keys does not work<\/h3>\n
\n When a complete row (for example Q\u2013P) or a block of keys (number pad, arrows, or F-keys)
\n fails in this test, it usually indicates:\n <\/p>\n
\n- A loose or partially disconnected keyboard ribbon cable inside the laptop.<\/li>\n
- Damage to the keyboard matrix on the internal PCB.<\/li>\n<\/ul>\n
\n This kind of issue is rarely fixed by drivers or Windows settings. In most cases the
\n keyboard needs to be reseated or replaced.\n <\/p>\n
3. Wrong characters or \u201cghost typing\u201d on Fujitsu laptops<\/h3>\n
\n If you press one key and a different character appears on screen \u2013 or your Fujitsu
\n notebook starts typing by itself \u2013 the keyboard circuitry is often damaged, for example:\n <\/p>\n
\n- After a liquid spill (water, coffee, soft drinks, etc.).<\/li>\n
- After long-term wear or corrosion inside the keyboard.<\/li>\n<\/ul>\n
\n When this behaviour also shows up in this tester, it strongly points to a hardware fault,
\n and the most reliable fix is a new keyboard.\n <\/p>\n
4. Keys that repeat by themselves<\/h3>\n
\n A key that prints the same character multiple times, even though you only press it once,
\n is a classic sign of a worn or dirty switch. On Fujitsu Lifebook devices heavily used for
\n typing, this often affects keys like Enter<\/strong>, spacebar or the letters in
\n the main typing area.\n <\/p>\n\n You can try:\n <\/p>\n
\n- Adjusting key repeat delay and repeat rate in Windows.<\/li>\n
- Carefully cleaning under and around the affected keycap.<\/li>\n<\/ul>\n
\n If the key still double-types in this online test, the fault is inside the keyboard
\n hardware and replacement is recommended.\n <\/p>\n
5. Backlit Fujitsu keyboard issues<\/h3>\n
\n Some newer Fujitsu Lifebook and business series models include a backlit keyboard.
\n This tool only checks whether the keys register \u2013 it does not<\/strong> test
\n the backlight itself. If keys work here but the backlight doesn\u2019t, the possible causes are:\n <\/p>\n\n- Backlight disabled in BIOS or in Fujitsu utility software.<\/li>\n
- A damaged LED backlight circuit or cable.<\/li>\n<\/ul>\n
\n If backlight is important in your work environment (for example, low-light offices or
\n field work), fitting a new backlit Fujitsu keyboard is often the cleanest solution.\n <\/p>\n
6. After liquid or contamination<\/h3>\n
\n Fujitsu laptops used in warehouses, workshops or mobile environments can be exposed to
\n liquids and dust. Typical symptoms after such exposure include:\n <\/p>\n