Van Guard 1200CM Series, Operation Manual

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17
Troubleshooting
For information about parts, accessories, or service -- contact your dealer directly or contact VanGuard
Microscopes at 1-800-423-8842.
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