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              [html]<thead><tr><td>Problem</td><td>Possible Cause</td><td>Solution</td></tr></thead><tbody><tr><td>1. Image not clear.</td><td>1. Specimen is in incorrect2. Lans is dirty. 2. Lans is dirty. 3. Coldar oil first placed on metastasis of biomersion objective. 4. Butbles in Credar oilS. Codar oil on 40x objective. 6. Sris diaphragm open too wide.</td><td>1. Re - position specimen. 2. Clean lens. 3. Put a drop of Cedar oil on proportions. 4. Rotate turnet several times by the compared to eliminate bubbles. 5. Clean 40x sbjective. 6. Reduce size of iris diaphragm.</td></tr><tr><td>2. Poor illumination.</td><td>1. Condenser position is incorrect. 2. Lens is dirty. 3. Specimen is not placed level.</td><td>1. Re - position condenser. 2. Clean lens. 3. Re - position specimen so it is level.</td></tr><tr><td>3. Illumination not bright.</td><td>1. Iris diaphragm opening too small. 2. Position of condenser too low. 3. Lens is dirty.</td><td>1. Open iris diaphragm wider. 2. Raise condenser. 3. Clean lens.</td></tr><tr><td>4. Cannot focus at high magnification.</td><td>1. Specimen is in incorrect position.</td><td>1. Re - position specimen.</td></tr><tr><td>5. Objective lenses touch specimen.</td><td>1. Stage is too high.</td><td>1. Re - position stage.</td></tr></tbody>
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