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16
Troubleshooting
For information about parts, accessories, or service -- contact your dealer directly or contact VanGuard
Microscopes at 800-423-8842 | [email protected] | veegee.com
Symptom:
No light visable from collector
Step #
Possible Cause
How To Test
Test Result?
Solution
For More Info
1
6
5
4
3
2
Light is not switched on
Visually inspect
Switched on
Not switched on
Go to next step
Move power switch to on position
Page 10
Power cord not plugged in
Visually inspect
Plugged in
Not plugged in
Go to next step
Plug power cord into outlet
Variable lighting control (VLC)
turned all the way down
Visually inspect
VLC turned up
VLC turned down
Go to next step
Turn VLC up
Page 10
Microscope not getting power
Inspect outlet
Good outlet
Outlet not good
Go to next step
Plug power cord into working outlet
Blown fuse
Visually inspect or try new fuse
Good fuse
Fuse is blown
Go to next step
Install new fuse
Page 15
Burnt out light bulb
Visually inspect or try new bulb
Good bulb
Bulb is burnt out
Contact dealer or VanGuard Microscopes
Install new bulb
Page 14
Page 18
Symptom:
Image through eyepiece(s) too dim
Step #
Possible Cause
How To Test
Test Result?
Solution
For More Info
1
5
4
3
2
Variable lighting control (VLC) is
turned down too far
Visually inspect
VLC is turned up
VLC is turned down
Go to next step
Turn VLC up
Page 10
Light bulb not centered properly
Visually inspect
Bulb is centered
Bulb is not centered
Go to next step
Center the bulb
Condenser not centered properly
Check condenser centering
Condenser is centered
Condenser not centered
Go to next step
Center the condenser
Page 8
Condenser height not correct
Visually inspect
Height is correct
Height is not correct
Go to next step
Adjust condenser height
Dirty condenser or collector lens
Visually inspect
Lenses are dirty
Lenses are clean
Clean condenser and/or collector lenses
Contact dealer or VanGuard Microscopes
Page 18
Page 7
Page 8
Page 15
Symptom:
The stage won’t raise up high enough
Step #
Possible Cause
How To Test
Test Result?
Solution
For More Info
1
2
Up-stop mechanism is set too low
Visually inspect
Set correctly
Set incorrectly
Go to next step
Adjust up-stop correctly
Page 11
Stage is set at maximum height
Visually inspect
At maximum height
Not at maximum height
Stage can’t be raised any higher
Contact dealer or VanGuard Microscopes
Page 18