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430

OKI printer error code 430: paper tray 1 cassette open or out

Verified with sources8 sourcesReviewed Oct 18, 2026
Technician coming? See the 2 steps they must show you
Home office laser multifunction printer
Túllio FCC BY-SA 4.0Image source

Risk level

Low

Usually safe to check without specialist tools.

Urgency

Low

Quick answer

Error code 430 (or 440 for optional Tray 2) on an OKI laser printer or MFP means the paper cassette is missing or not pushed all the way in. Pull the paper cassette out, check the paper guide and stopper, clean the feed and separation rollers if needed, and push the tray in until it stops.

Safety first

Stop and check this first

  • Never force the paper cassette shut if it stops halfway; pull it out first and check that the rear paper stopper and paper stack are aligned properly.
  • When wiping the separation roller on the cassette and the two feed rollers inside the machine, use only a wet cloth that has been wrung out well so water does not drip into internal sensors.

Safe checks you can perform

  • Remove and reinsert the paper cassette firmly into the indicated tray bay
  • Adjust the paper width guide, length stopper, and stack height inside the cassette
  • Wipe the cassette separation roller and the two internal paper feed rollers
  • Confirm Paper Size, Media Type, and Media Weight on the touch panel

Leave these tasks to a qualified professional

  • Do not attempt this professional task: Repair or replace a damaged paper cassette actuator tab or lift mechanism
  • Do not attempt this professional task: Inspect the tray presence sensor switch and cassette guide rails

What a technician must be able to justify

Technician visit

These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.

These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.

  1. Repair or replace a damaged paper cassette actuator tab or lift mechanism

    What they doWhen the rear actuator tab on the paper cassette is broken or the tray lift coupling fails to engage when the cassette is closed, official OKI service must repair or replace the affected assembly.

    They must show youthe cassette sliding smoothly to its stop and immediate recognition under Paper Setup.

    In writingthe replaced Tray 1 or Tray 2 part and the post-repair functional check.

  2. Inspect the tray presence sensor switch and cassette guide rails

    What they doIf error code 430 or 440 remains displayed when the paper cassette is pushed completely against the stop, a technician must inspect the side rails, retention catch, and tray detection sensor inside the Tray 1 or Tray 2 bay.

    They must show youproper sensor actuation when the cassette closes and a test page printed from that tray without error 430 or 440.

    In writingthe error code diagnosed, the sensor or rail adjustment performed, and the test print verification.

Before accepting a part or repair

Nothing has been shown yet. Do not accept a part swap based on the code alone.

Follow these steps

Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.

  1. Remove and reinsert the paper cassette firmly into the indicated tray bay

    No special tools

    Who:
    you.
    How:
    if the paper cassette for Tray 1 (error 430) or optional Tray 2 (error 440) is out of the printer, insert it; if it is already inside, pull the cassette completely out, check that no loose sheet blocks the rear of the bay, and push the paper cassette back in until it stops.
    Result that matters:
    seating the paper cassette all the way into the printer so the presence switch engages.
    If the cassette closes flush and the Please close TRAY1 prompt disappears:
    printing resumes without canceling the job.
    If the cassette hits an obstruction before closing fully:
    pull it out again and inspect the paper stopper and guides.
    Evidence to keep:
    photo of error code 430 or 440 and cassette seating position.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  2. Adjust the paper width guide, length stopper, and stack height inside the cassette

    No special tools

    Who:
    you.
    How:
    pull the paper cassette out, fan the stack well and align the edges, slide the paper guide to the width and the paper stopper to the length of the paper, and load 60 to 120 g/m2 (16 to 32 lb) paper print-side down below the limit mark on the paper guide (250 sheets in Tray 1 or 530 sheets in Tray 2).
    Result that matters:
    preventing an overfilled stack or shifted stopper from keeping the tray open.
    If the stack is secured below the mark and the cassette pushes in smoothly to its stop:
    verify the touch panel settings.
    If the paper stopper or width guide is unlatched from its track:
    reseat it before pushing the tray in.
    Evidence to keep:
    paper size and sheet count loaded in the cassette.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  3. Wipe the cassette separation roller and the two internal paper feed rollers

    No special tools

    Who:
    you.
    How:
    with the paper cassette pulled out and paper removed, wipe the separation roller on the paper cassette and the two paper feed rollers inside the machine using a wet cloth wrung out well, then reload the paper and close the tray.
    Result that matters:
    clearing paper dust or shifted sheets around the cassette coupling and feed rollers.
    If the tray slides in and closes cleanly after wiping the rollers:
    run a test print.
    If the tray is still not detected when closed:
    check the touch panel tray menu and presence switch.
    Evidence to keep:
    visual check of the separation roller and two internal feed rollers.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  4. Confirm Paper Size, Media Type, and Media Weight on the touch panel

    No special tools

    Who:
    you.
    How:
    press Device Settings on the touch panel, tap Paper Setup, select the tray where paper is loaded, set Paper Size, Media Type, and Media Weight, and press Back until the home screen is displayed.
    Result that matters:
    confirming that the printer detects the closed tray and has matching media parameters.
    If the home screen returns to ready without error 430 or 440:
    print a test page from that tray.
    If error code 430 or 440 persists with the cassette pushed all the way in:
    ask official OKI support to check the tray presence sensor.
    Evidence to keep:
    photo of the Tray 1 or Tray 2 Paper Setup screen.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

Still not solved

If the error persists, stop here. See what the technician must do and show you.

Where this code applies

A code is meaningful only inside the right product and version context.

Primary scope

System
Printers
Brand
OKI
Product type
Laser printer

Known code variants

  • 430
  • 440
  • Bosch 430 bici elettrica
  • Bosch 430 bicicleta eléctrica
  • Bosch 430 E-Bike
  • Bosch 430 eBike
  • Bosch 430 vélo électrique
  • Bosch eBike code 430
  • Bosch eBike error 430
  • Bosch eBike Fehler 430
  • Bosch eBike Fehlercode 430
  • Cierre BANDEJA 1
  • Cierre la Bandeja 2
  • code Bosch eBike 430
  • codice Bosch eBike 430
  • código Bosch eBike 430
  • Código de error: 430
  • Código de error: 440
  • erreur Bosch eBike 430
  • error Bosch eBike 430
  • Error code: 430
  • Error code: 440
  • errore Bosch eBike 430
  • Falta casete en bandeja 1
  • Please close TRAY1
  • Please close TRAY2
  • Tray 1 cassette is missing

What it means

In the official OKI MB492 and MB562 Web Manual Error Message List, error code 430 accompanies the message Please close TRAY1 (while error code 440 accompanies Please close TRAY2 for the optional second tray). It indicates that the paper cassette is not inserted in the tray bay or has not been pushed in far enough to engage the tray presence sensor. Other OKI models may vary, and this error code alone never proves a hardware component is broken.

Warnings and stop conditions

  • Lowsource verified

    Never force the paper cassette shut if it stops halfway; pull it out first and check that the rear paper stopper and paper stack are aligned properly.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  • Mediumsource verified

    When wiping the separation roller on the cassette and the two feed rollers inside the machine, use only a wet cloth that has been wrung out well so water does not drip into internal sensors.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

Symptoms and causes

Probable causes · in order

  • Tray 1 or Tray 2 paper cassette removed or not pushed in until it stopsCommon

    Leaving the paper cassette partially pulled out after refilling paper or failing to push it firmly to the back stop prevents the tray sensor from detecting the cassette and triggers code 430 or 440.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  • Paper stopper or width guide misaligned or stack loaded above the limit markPossible

    Loading more than 250 sheets of 80 g/m2 paper in Tray 1 (or more than 530 sheets in Tray 2) or leaving the rear paper stopper out of position keeps the cassette from seating fully.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  • Loose sheet or debris obstructing the rear of the paper cassette bayPossible

    A dropped sheet behind the cassette or paper dust around the two internal paper feed rollers blocks the final travel of the tray when closing it.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

  • Tray presence sensor actuator or cassette rail misalignmentLess common

    If the paper cassette sits flush with the front panel but Please close TRAY1 remains on screen, the rear actuator tab on the cassette or the internal tray switch may not be engaging.

    Evidence: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · OKI MB492/MB562 Web Manual - Error Message List · OKI MB492/MB562 Web Manual - Available Paper Types

Virtual technician

Does 430 still appear after these checks?

Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.

Start diagnosis

Sources and technical references

  1. 1

    OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2)

    OKI Data Corporation · 2014 · official_doc

  2. 2

    Manual Web OKI MB492/MB562 - Limpieza de los rodillos de alimentación de papel (Bandeja 1/Bandeja 2)

    OKI Data Corporation · 2014 · official_doc

  3. 3

    OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2

    OKI Data Corporation · 2014 · official_doc

  4. 4

    Manual Web OKI MB492/MB562 - Carga del papel en la Bandeja 1 y Bandeja 2

    OKI Data Corporation · 2014 · official_doc

  5. 5

    OKI MB492/MB562 Web Manual - Error Message List

    OKI Data Corporation · 2014 · official_doc

  6. 6

    Manual Web OKI MB492/MB562 - Lista de mensajes de error

    OKI Data Corporation · 2014 · official_doc

  7. 7

    OKI MB492/MB562 Web Manual - Available Paper Types

    OKI Data Corporation · 2014 · official_doc

  8. 8

    Manual Web OKI MB492/MB562 - Tipos de papel disponibles

    OKI Data Corporation · 2014 · official_doc

Sources: OKI MB492/MB562 Web Manual - Cleaning the Paper Feed Rollers (Tray 1/Tray 2) · Manual Web OKI MB492/MB562 - Limpieza de los rodillos de alimentación de papel (Bandeja 1/Bandeja 2) · OKI MB492/MB562 Web Manual - Loading Paper in Tray 1 and Tray 2 · Manual Web OKI MB492/MB562 - Carga del papel en la Bandeja 1 y Bandeja 2 · OKI MB492/MB562 Web Manual - Error Message List · Manual Web OKI MB492/MB562 - Lista de mensajes de error · OKI MB492/MB562 Web Manual - Available Paper Types · Manual Web OKI MB492/MB562 - Tipos de papel disponiblesreviewed 2026-10-18 · verified

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