Components
Components
Components
Components
Components
5
Trinocular Port
Set Screw
Reflected
Illumination
Analyzer Knob
Reflected
Illumination
Polarizer Slider
Diaphragm
Centering
Adjustment
(right)
X-Axis Lamp
Adjustment
Knob
Lamp
Housing
Door
Y-Axis Lamp
Adjustment
Knob
Lamp Housing
Power Cord
and Plug
Stage Limit
Main Power
Jack
Fuse Holder
Variable
Lighting
Control
Y-Axis
Stage
Control
Z-Axis
Stage
Control
Drop-In Colored
Filter Holder
Swing-In
Condenser Lens
Objectives
Head
Reflected
Illuminator
Reflected
Illuminator
Set Screw
T
T
T
T
Troubleshooting
roubleshooting
roubleshooting
roubleshooting
roubleshooting
24
This chart may help resolve some of the more common problems associated
with using a compound microscope. Simply follow the steps until your problem
is resolved. As always, you can contact your dealer or VanGuard Microscopes
if you ever need help.
For information about parts, accessories, or service -- contact your dealer directly
or contact VanGuard Microscopes at 1-800-423-8842.
Symptom:
No light visable from reflected (upper) illuminator
Step #
Possible Cause
How To Test
Test Result?
Solution
For More Info
1
7
6
5
4
3
Light is not switched on
Visually inspect
Switched on
Not switched on
Go to next step
Move power switch to on position
Page 12
Main power cord and/or illuminator
plug not connected
Visually inspect
Plugged in
Not plugged in
Go to next step
Plug in power cord or illuminator plug
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 16
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 22
Burnt out lamp
Visually inspect or try new lamp
Good lamp
Lamp is burnt out
Contact dealer or VanGuard Microscopes
Install new lamp
Page 21
2
Illumination selector switch is not
set to the “UP” position
Visually inspect
Set to “UP”
Set to “DOWN”
Go to next step
Switch the selector to “UP”
Page 12
Page 11
Page 11
Symptom:
No light visable from transmitted (lower) illuminator
Step #
Possible Cause
How To Test
Test Result?
Solution
For More Info
1
7
6
5
4
3
Light is not switched on
Visually inspect
Switched on
Not switched on
Go to next step
Move power switch to on position
Page 16
Main power cord and/or illuminator
plug not connected
Visually inspect
Plugged in
Not plugged in
Go to next step
Plug in power cord or illuminator plug
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 16
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 22
Burnt out lamp
Visually inspect or try new lamp
Good lamp
Lamp is burnt out
Contact dealer or VanGuard Microscopes
Install new lamp
Page 21
2
Illumination selector switch is not
set to the “Down” position
Visually inspect
Set to “Down”
Set to “Up”
Go to next step
Switch the selector to “Down”
Page 16
Page 11
Page 11
Brightfield Abbe
Condenser
