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Gemscope
MANUAL
73 Mall Drive, Commack, NY 11725 • 631-543-2000 (P) • 631-589-6975 (F)
www.unitronusa.com • info@unitronusa.com

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Do you have a question about the Gemscope 3075-GS and is the answer not in the manual?

Questions and answers

Kevin H FitzSimmons
March 7, 2025

My top fluorescent illuminator starts flashing on and off after a few minutes. I have change bulbs twice and still having issues.

1 comments:
Mr. Anderson
March 7, 2025

The fluorescent illuminator on the Unitron Gemscope 3075-GS may flash on and off after a few minutes due to a loose bulb in the socket or a bulb that needs replacement. Removing and reinserting the bulb securely or replacing it may resolve the issue.

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Summary of Contents for Unitron Gemscope 3075-GS

  • Page 1 Gemscope MANUAL 73 Mall Drive, Commack, NY 11725 • 631-543-2000 (P) • 631-589-6975 (F) www.unitronusa.com • info@unitronusa.com...
  • Page 2: Table Of Contents

    COMPONENTS DIAGRAM ....................5 ASSEMBLY ........................6-8 ADJUSTMENT AND OPERATION .................. 9-11 REPLACING THE ILLUMINATOR LAMPS ..............12-13 TROUBLESHOOTING ......................14 MAINTENANCE........................15 SERVICE ..........................15 WARRANTY ........................15 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 3: Safety Notes

    Gemscope. NOTE: Always plug the Gemscope power cord into a suitable grounded electrical outlet. A grounded 3-wire cord is provided. ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 4: Repair, Care And Maintenance

    Gemscope Base or Gemscope Stereo cleaning more difficult. Head needs to be returned to them for service, UNITRON will issue a RMA (Return  Store the instrument in a cool, dry Materials Authorization) number over the environment. Cover the Gemscope with the phone.
  • Page 5: Introduction

    GEMSCOPE INTRODUCTION ® ® Congratulations on the purchase of your new UNITRON Gemscope. UNITRON Gemscopes are engineered and manufactured to the highest quality standards. Your Gemscope will last a lifetime if used ® and maintained properly. UNITRON Gemscopes are carefully assembled, inspected and tested by our staff of trained technicians in our New York facility.
  • Page 6: Assembly

    When assembling the Gemscope, make sure that all parts are free of dust and dirt, and avoid scratching any parts or touching glass surfaces. Stereo Head Eyepieces Lock Screw Fluorescent Illuminator Gem Clamp Power Cord ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 7 Installing the Stoneholder (Fig. 2) The stage has two stoneholder mounts  on either side of the stage where you can attach the stoneholder  Fig. 1 Fig. 2 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 8 The LED light may be varied in intensity by adjusting the intensity dial labeled “Reflected” on the side of the Gemstand. Fig. 3A ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 9: Adjustment And Operation

    Fig. 6 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 10 Plug the GEM base into a 110v power supply outlet. Turn the main switch  to the “I” (on) position, and rotate the brightness adjustment knob  to obtain a comfortable brightness. Fig. 8 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 11 By turning the main switch  to “I” (on) and the fluorescent lamp switch  to “I” (on), the top illuminator will provide the equivalent of a Fig. 10 northern daylight overhead light source. ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 12: Replacing The Illuminator Lamps

    To insert the new lamp wrap the plastic bag supplied with the lamp or a piece of lens tissue around the lamp before handling/inserting it. Fig. 11 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 13 Once the lamp housing is reassembled, reattach the overhead fluorescent light to the stage of the GEM stand base (see page 8). Fig. 12 ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 14: Troubleshooting

    Voltage from power supply is too Use the brightness adjustment high knob to lower brightness Light flickers Bulb needs replacement Replace bulb Bulb may be loose in socket Remove bulb and reinsert securely ® UNITRON 73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com...
  • Page 15: Maintenance

    (631) 543-2000. This warranty is limited to the continental United States of America. All items returned for warranty repair must be sent freight prepaid and insured to Unitron Ltd., 73 Mall Drive, Commack, NY 11725 – USA. All warranty repairs will be returned freight prepaid to any destination within the continental United States of America.

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