Olympus CHA - User Manual

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OLYMPUS STUDENT MICROSCOPES

IINSTRUCTION MANUAL I

MODELS

CBA

&

CBB

Table of Contents

Questions and Answers:

C
Carolyn LambertAug 7, 2025
Why is my Olympus CHA Microscope image not sharp?
- C
  Charles JonesAug 8, 2025
  If your Olympus Microscope image lacks sharpness, contrast, or definition, several factors could be responsible: * The objective may not be correctly positioned. Try slightly rotating the nosepiece until it clicks. * The objective front lens might be dirty; clean it carefully. * If using an immersion objective, ensure you apply immersion oil, and that there are no bubbles present. Use Olympus immersion oil for best results. * Also, ensure that your specimen is clean.
B
Brian ColeAug 12, 2025
How to fix a partially out of focus field of view on Olympus CHA Microscope?
- A
  Amy RiceAug 12, 2025
  If the field of view is partially out of focus on your Olympus Microscope: * Ensure the objective is correctly positioned in the light path by slightly rotating the nosepiece until it clicks. * Make sure the specimen is correctly positioned on the stage and secured with the specimen holder or stage clips.
M
Mary SantosAug 16, 2025
Why is my Olympus CHA illuminator too bright?
- C
  carpentershaneAug 16, 2025
  If the illuminator of your Olympus Microscope is too bright or too dark, consider the following: 1. Check that the voltage selector switch matches the mains voltage. Adjust if necessary. 2. The mains voltage may be too high or low. Use a variable voltage transformer to adjust it. 3. The rheostat trimmer screw may need adjustment. Adjust it correctly.
A
Amanda MathewsAug 20, 2025
What to do if Olympus CHA Microscope image contrast is excessive?
- I
  Isaac HowellAug 20, 2025
  Excessive image contrast in your Olympus Microscope could be due to: * A condenser that is lowered excessively. Raise the condenser. * An aperture iris diaphragm that is stopped down excessively. Open the diaphragm.
H
hernandezlindsayAug 25, 2025
Why is the field of view cut off on my Olympus CHA Microscope?
- M
  Malik BrownAug 25, 2025
  If the field of view is cut off or the nosepiece on your Olympus Microscope didn't change properly: * Slightly rotate the nosepiece until it clicks into position. * Ensure the condenser is fully re-inserted.
F
fparkerAug 29, 2025
What to do if light intensity does not increase on Olympus Microscope?
- R
  Roy KingAug 29, 2025
  If the light intensity of your Olympus Microscope does not increase when the voltage is raised: * Ensure the condenser is not lowered excessively by raising it. * Check and correctly adjust the rheostat trimmer screw.
D
David TaylorSep 2, 2025
How to adjust Olympus Microscope objectives to be parfocal?
- S
  Sean SweeneySep 2, 2025
  If objectives are not parfocal when changed on your Olympus Microscope, it may be due to the mechanical tube length not being correctly adjusted. Adjust it using the tube length adjustment rings on the observation tube.

Olympus CHA Specifications

General

Type	Biological Microscope
Magnification	40x - 1000x
Eyepiece	WF10x
Stage	Mechanical stage
Objectives	4x, 10x, 40x
Focus	Coarse and fine focus

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