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Pen Tray Lights Flash in Sequence and Pen Tray Pens Don’t Work

SMART Hardware SMART Board 600 series interactive whiteboards


The pen tray lights flash in sequence and you can’t write with pen tray pens on the interactive screen.


Two situations can cause this issue:

  • The USB cable connecting the computer to the interactive whiteboard is too long.

  • The cable connecting the SC9 controller to the pen tray isn’t working.


Your SMART Board 600 series interactive whiteboard includes a 16 1/2’ (5 m) SMART USB A/B cable (Part No. 93-00507-00). If you extend this cable, check your interactive whiteboard’s voltage reading to verify that your interactive whiteboard is works and has enough power.

To check your interactive whiteboard’s voltage reading

  1. Press the Control Panel icon in the SMART Board software Start Center.

    The SMART Board software control panel appears.

  2. Press About Software and Product Support.

  3. Press Diagnostics.

    The SMART Board Diagnostics window appears.

  4. Select Report > Local > View.

    The System Summary Log window appears.

  5. Find the line in the report that states “USB Power”. A sufficient voltage range for this report is between 4.06V and 5.60V.

If you’re using USB extension cables, remove them, and then connect the computer to the interactive whiteboard using one standard USB cable only. If this resolves the issue, connect one USB extension cable at a time, verifying the voltage reading each time.

To order a replacement SC9 controller cable

If the voltage to your interactive whiteboard is in the recommended range and the issue persists, order a replacement SC9 controller cable. To order a replacement SC9 controller cable for your SMART product, contact your local reseller and provide the appropriate part numbers from the following table.


Part No.

SMART Board 640 interactive whiteboard


SMART Board 660 interactive whiteboard


SMART Board 680 interactive whiteboard


SMART Board 690 interactive whiteboard


If the pen tray lights continue to flash in sequence, you may need to replace the pen tray. Contact your local reseller ( or SMART Support or further assistance.

First Published October 24, 2007


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SMART Technologies is a leading provider of technology solutions that enable inspired collaboration in schools and workplaces around the world by turning group work into a highly interactive, engaging and productive experience. SMART delivers an integrated solution of hardware, software and services designed for superior performance and ease of use, and remains a world leader in interactive displays.
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