Keyboard or Printer Stopped Responding on an Intoxilyzer 240

Check this before you order a part

When the keyboard or the printer on an Intoxilyzer 240 or 240D stops responding, the most common cause is not a failed device. It is a lost Bluetooth pairing. The instrument and the accessory pair to each other, and that bond can drop after a battery change, a long period switched off, or one of the two being replaced.

Re-pairing is a field procedure that takes a few minutes and costs nothing. Work through it before assuming the keyboard or printer is dead, and before we ship you a replacement you may not need.

Three things that apply to every version of this

• Do not do this on a metal work surface. Metal interferes with the pairing, and this catches people out on stainless benches and rolling carts. Move to a wooden or laminate surface.
• Keep the instrument and the accessory about 12 inches apart during pairing. Not touching, not across the room.
• The pairing PIN is 3656. Enter it with the right blue button to advance each digit and the center button to accept it.

Start with both the instrument and the accessory switched off.

Reconnecting a keyboard

The steps differ slightly depending on which keyboard you have, so identify yours first.

Freedom Universal, Freedom Original, or HP keyboards

1. Turn the instrument on. When it asks "Is keyboard switched on?", answer no.
2. Use the right blue button to scroll to Setup.
3. Turn the keyboard on.
4. Select Bluetooth on the instrument.
5. Enter PIN 3656 when prompted.
6. Select Search. The instrument lists the devices it finds.
7. Select your keyboard from the list and press the center button. Save it as keyboard when prompted.
8. Scroll back with the left blue button to "Is keyboard switched on?" and this time answer yes. Wait for it to connect.
9. Test it with the arrow keys, moving the selection up and down.
10. Switch both off. They should stay paired when powered back on.

Freedom Pro keyboard

Same as above, with two additions before you select Bluetooth on the instrument: confirm the switch on the left side of the keyboard is in SPP mode and not HID, then press the pairing button once with a paper clip. Press it once, do not hold it down.

Verbatim keyboard

Scroll to Setup, turn the keyboard on, and press its pairing button once with a paper clip. Then Bluetooth, PIN 3656, Search, and select the keyboard. When you save it, you will also need to type the four digit code shown on the instrument's display on the keyboard itself, followed by Enter. Switch both off and back on, then test with the arrow keys.

Plugable folding keyboard

Scroll to Setup and turn the keyboard on by opening it up. Press Fn and C together to activate its Bluetooth; the light at the top left turns blue when it is active. Then Bluetooth on the instrument, PIN 3656, Search, select, and save as keyboard.

Reconnecting the printer

Before starting, make sure the printer is plugged in or fully charged, and leave the keyboard switched off for this whole process.

1. Turn the instrument on and answer no to "Is keyboard switched on?".
2. Scroll to Setup.
3. Confirm the printer is powered on by pressing its paper feed button and watching the paper advance.
4. Select Bluetooth, enter PIN 3656, and select Search.
5. Pick the printer from the list. It appears with ASL in the description.
6. Save it as printer when prompted.
7. Scroll back to the main menu, select reprint, choose any previous test, and print it.
8. Switch the instrument off. The pairing holds when powered back on.

If you see "bond failed", keep going. These printers frequently connect correctly despite that message, which is why the reprint step is the real test. If the reprint works, you are done. If the reprint fails, stop there and call us.

When to call us

• The reprint test fails after a pairing attempt.
• The instrument's search doesn't list the keyboard or printer at all, after you've confirmed it's powered on, off metal, and within about a foot.
• Pairing holds but the keyboard misses keystrokes or the printer output is faint or blank. That points at the accessory itself rather than the connection, and our printer troubleshooting guide covers the paper and battery causes.
• You've confirmed the accessory has genuinely failed and need a replacement.

Call (513) 891-0868 or email service@fosterinstruments.com with your instrument model and which keyboard or printer you have.