background image

 

4. TROUBLESHOOTING

Optics

(1)The side of 

the field of 

view is dark or 

not even

The nosepiece is not in the right 

position

Turn the nosepiece 

into the right position
Clean the lens

Stain or dust has accumulated on the 

condenser, objective, eyepieces,

base, lens

Symptom

Cause

(2)Stain or 

dust is 

observed in 

the field 

of view

Stains have accumulated on the 

specimen

Clean the specimen

Clean the lens

Stains have accumulated on the lens

(3)Unclear 

image

No cover glass on the specimen slide Add the cover glass
The cover glass is not standard

Use a standard cover 

glass with thickness 

0.17mm

Remedy

Make it face up
Clean thoroughly

Use immersion oil

Get rid of the air bubble
Use a correct one

Adjust the iris 

diaphragm
Clean lens

Adjust the condenser

The specimen faces down
The immersion oil has accumulated 

on the dry objective
The immersion oil is not used for oil 

objective 100XR
Air bubble in the immersion
Use wrong immersion oil
The aperture is not opened to 

correct size
Stains or dust has accumulated on 

the lens in the inlet of the head
The condenser is not in the right 

position

4)One side of 

the field of view 

is dark or the 

image moves 

while focusing

The specimen slide is not fixed

Fix with clips

Turn the nosepiece 

into the right position

The nosepiece is not in the right 

position

(5)The field of 

view is not 

bright enough

The iris diaphragm is not bigger 

enough

Adjust the iris 

diaphragm

(6)The image 

color is not true

No filter is used

Use correct filter

Adjust the condenser

Clean lens

The condenser is not in the right 

position
Stain or dust has accumulated on the 

condenser, objective, eyepieces, 

base lens

3

WESTLAB
SUBLIME STEREO
MICROSCOPE,
RECHARGEABLE,
LED
USER MANUAL

CODE 663-541 & 664-090

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