17
Troubleshooting
I can’t see anything through the eyepieces/camera
Step #
Possible Cause
How to Check
Result
Solution
For More Info
1
Light not turned on
Visually inspect
Turned on
Go to next step
Not turned on
Turn on light
Page 10
2
VLC set too low
Visually inspect
Not set too low
Go to next step
Set too low
Increase VLC
Page 10
3
Objectives not installed
Visually inspect
Installed
Go to next step
Not installed
Install objectives
Page 7
4
Condenser not installed
Visually inspect
Condenser installed
Go to next step
Condenser not installed
Install condenser
Page 7
5
Prism slider pulled out/pushed
in (trinocular models only)
Visually inspect
Prism slider in correct
position
Go to next step
Prism slider not in
correct position
Pull out for camera/push in for eyepieces Page 12
6
Something blocking light path
between substage illuminator
and objectives
Visually inspect
Blockage
Remove blockage
No blockage
Contact dealer or VanGuard Microscopes Page 17
I can’t focus on the specimen
Step #
Possible Cause
How to Check
Result
Solution
For More Info
1
Up-stop set too low
Visually inspect
Set too low
Reset up-stop to appropriate height
Page 11
Not set too low
Go to next step
2
Using the 100X objective
without immersion oil
Visually inspect
Using oil
Go to next step
Not using oil
Use immersion oil
Page 13
3
Condenser not installed
Visually inspect
Condenser installed
Go to next step
Condenser not installed
Install condenser
Page 7
4
Oil in objective/dirty objectives
Visually inspect
Objectives clean
Go to next step
Objectives dirty
Clean or replace objectives
Page 15
5
Slide placed on stage upside
down
Visually inspect
Slide upside down
Flip slide
Slide not upside down
Go to next step
6
Cover glass too thick
Visually inspect
Cover glass too thick
Use #1.5 (0.17mm) cover glass
Cover glass not too thick
Contact dealer or VanGuard Microscopes Page 17
The stage keeps drifting down
Step #
Possible Cause
How to Check
Result
Solution
For More Info
1
Focus tension is set too low
Check focus tension
control knob (page 10)
Not enough tension
Increase tension
Page 10
Plenty of tension
Contact dealer or VanGuard Microscopes Page 17
www.calcert.com
sales@calcert.com
1.888.610.7664
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