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Dejavoo | Update the Date & Time 

Summary:
This guide explains how to adjust the date, time, and time zone on Dejavoo Z-Line and QD-Line devices, & DVpay light. Instructions include both touchscreen and non-touch models, covering manual and automatic time settings.

This guide covers the following topics:

 

Key Reasons to Adjust Date & Time
Transaction Authorization: Payment networks validate the timestamp of each transaction.

  • Incorrect time can trigger declines or “invalid transaction” errors.

  • Processors may reject transactions that appear to be from the future or too far in the past.
Batch Settlement Accuracy: Settlement files rely on correct timestamps.

  • Wrong date/time may cause batch settlement failures.

  • Can lead to duplicate batches, mismatched totals, or delayed funding.
Security Requirements: Enforced by card brands and processors.

  • Accurate time is required for tokenization, encryption checks, and security certificate validation.

  • Incorrect clocks may cause terminals to fail security handshakes.
Reporting Accuracy: Daily reports, summaries, and audit logs rely on accurate timestamps.

  • Incorrect time leads to confusing or inaccurate reports.

  • Makes reconciliation more difficult for merchants and accounting teams.

Update Date & Time on QD-Line Touch Screen Models

  1. From the main screen, tap the Settings (cog) icon.

  2. Tap the three-line menu in the top right corner.

  3. Scroll down and select Date & Time.

  4. Toggle Automatic Date & Time off to enable manual entry.

  5. Select your Time Zone and optionally enable 24-hour format.

  6. Adjust the Date and Time as needed.

  7. Press Home to return to the idle screen.

Update Date & Time on All Z-Line

Follow these steps to edit the Date & Time on the Dejavoo terminal. When powering on the terminal, you will be prompted to confirm the current date and time. Press F2 if the information shown is correct or press F4 if it is incorrect and follow the on-screen instructions to make the necessary changes.

Please note, time must always be entered using the 24-hour (military) format.

 

Non-Touch Screen Touch Screen  Display 
From the idle screen, press OK to enter the Core Menu. Date & Time z series step 1

 

Use the down arrow to highlight UTILITY, then press OK.

If prompted, enter the default password: 1234.

Tap UTILITY.

If prompted, enter the default password: 1234.

Date & Time z series step 2

 
Highlight SETTINGS, then press OK. Tap SETTINGS. Date & Time z series step 3

 
Scroll to DATE AND TIME, then press OK. Tap DATE AND TIME. Date & Time z series step 4

 

If the date displayed is correct press OK.

If the date displayed is incorrect press the yellow back space key to clear it then input the correct Date using the following format:  MM/DD/YY 

Date & Time z series step 5

 

If the time displayed is correct press OK.

If the time displayed is incorrect press the yellow back space key to clear it, then input the correct time using 24-hour hour clock (military) format.

*Example shows 1:00 PM 

Date & Time z series step 6

 

Terminal returns to the setting's main menu.

Military Time Conversion Chart

Military Conversion Chart

Invalid POS Date Error in DV Pay Lite

Issue 

This error typically appears when the terminal’s date, time, or time zone are incorrect. DV Pay Lite requires accurate time settings to process transactions securely.

How to Fix the Issue in DV Pay Lite

  1. Press the Home Button
    Exit to the DVPayLite home screen. Enter your System PIN when prompted.

  2. Go to Settings

  3. Select Date and Time

  4. Correct the Date and Time Settings
    Update:

    • Date

    • Time

    • Time Zone
      Ensure all settings match your current location.

Once corrected, the device will resume normal processing without the Invalid POS Date error.