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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

Summary of Contents for 1200CM Series

Page 1: ...Covering Models 1210CM 1211CM 1220CM 1221CM 1222CM 1223CM 1230CM 1231CM 1232CM 1233CM Operation Manual 1200CM Series...

Page 2: ...25 N A Abbe condenser Phase contrast models come with a 1 25 N A Zernike condenser with phase annulus rings for 10X 25X 40X and 100X also has a 0 setting for brightfield work All condensers are mount...

Page 3: ...0X Plan Phase Objective 1 ea 20X Plan Phase Objective 1 ea 40X Plan Phase Objective 1 ea 100X Plan Phase Objective 1 ea Dispersion Filter 1 ea Blue Filter 1 ea Green Filter 1 ea Model 1230CM Trinocula...

Page 4: ...xels for 1210 and 1220 series 1200 CDPC 3 USB DIgital Camera System 3 Megapixels for 1230 series Other Accessories Part Number Description Call for Part Numbers Eyepieces 10X 16X 20X Call for Part Num...

Page 5: ...tering Knobs Brightfield only Aperature Iris Diaphragm Adjustment Lever Fine Focus Control Substage Collector Base Stand Mechanical Stage Slide Holder Slide Holder Knobs Focusing Tension Control Knob...

Page 6: ...Fuse Holder Parts Accessories Phase Annuli Centering Knobs Phase Contrast Condenser Iris Diaphragm Adjustment Light Bulb Centering Mechanism Substage Collector Set Screw 6 Light Bulb Access Door Lock...

Page 7: ...eyetubes see figure 2 After removing the objectives from their storage containers individually install each one into the nosepiece by threading them clockwise into the threaded holes of the nosepiece...

Page 8: ...er will reduce the field so that a small white hexagon is visible within a black field see Figure 6A Focusing of the hexagon is performed by turning the coarse fine focus controls This white hexagon i...

Page 9: ...nser assembly until the two rings of light are centered upon one another see Figure 8 Once the phase rings are centered remove the phase contrast centering telescope and replace with the eyepiece The...

Page 10: ...to induce contrast into a specimen not to adjust light intensity The mechanical stage X Y controls located underneath the right hand side of the stage see figure 9 provide easy and accurate positionin...

Page 11: ...icroscope Interpupillary and Diopter Adjustment 1 2 3 Interpupillary adjustment the distance between eyepieces is made through a folding action The Seidentopf design allows for a folding adjustment wh...

Page 12: ...a adapter assembly until it is firmly secured with the camera port set screw Tighten the camera port set screw Pull the prism slider completely out to divert the image to the camera port The prism sli...

Page 13: ...Models The 100X objective which comes with this microscope must be used with immersion oil in order to maintain image quality After use the objective tip needs to be wiped clean so that no oil residu...

Page 14: ...lose the light bulb access door and screw the knob back in to lock Return the microscope to normal operating position If necessary recenter the illuminator following the instructions on page 9 1 2 7 6...

Page 15: ...r ordering information The same care instructions apply to all optical parts on this VanGuard Microscope including the substage collector and the condenser lenses All other parts can be cleaned with a...

Page 16: ...can t get enough light Step Possible Cause How to Check Result Solution For More Info 1 Variable lighting control VLC is turned down too far Visually inspect VLC turned up Go to next step VLC turned...

Page 17: ...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...

Page 18: ...25 NA 8 0mm WD 1 8mm FOV Achromatic or Plan Achromatic 20X 0 40 NA 0 50mm WD 0 9mm FOV 40X 0 65 NA 0 40mm WD 0 45mm FOV 100X oil 1 25 NA 0 25mm WD 0 18mm FOV Stage Dimensions 125mm x 135mm Stage Motio...

Page 19: ...19 Notes...

Page 20: ...Printed in the USA No VGMNL070319 1200CM...

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