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Troubleshooting

1. White (bright field) light isn't making it to the sample.

CAUSE & REMEDY

Lamp not on.

Turn on the lamp (1) and look to see if both bulbs come on. One lamp is under the

stage (13) and the other is in the rear lamp housing (33).

Turn on the mercury lamp (18) (if it has been off for at least 30 minutes). Wait 5‐10

minutes for the bulb to stabilize.

Wrong light source or incorrect light path.

Select the ocular path (2) to allow the sample to be seen in the oculars.

Select reflected (top‐side) or transmitted (underneath) white light with switch (4).

Select reflected white light vs. fluorescent light with slide knob (30).

Open the shutter (20) for reflected light.

Intensity is low.

Turn (3) up the intensity of light source.

Disengage the ND filters (32).

Open the field iris diaphragm (13).

Open the aperture iris diaphragm (22) and field iris diaphragm (21).

Select BF, DF or DIC mirrors (17) when using white light.

2. PROBLEM: White light (bright field) is too intense.

CAUSE & REMEDY

"Preset' (4) is pushed in which automatically turns on the maximum light voltage.

Deselect the button (green light will go off).

Intensity is turned up too high.

Dial (3) it down.

3. PROBLEM: Fluorescent light is not hitting sample correctly.

CAUSE & REMEDY

Lamp not on.

Turn on the mercury lamp (18) (if it has been off for at least 30 minutes).

Wait 5‐ 10 minutes for the bulb to stabilize.

Wrong light source or incorrect light path.

Select the eyepiece path (2) to allow the sample to be seen in the oculars.

Select reflected light (top‐side) switch (4).

Select fluorescent light with slide knob (30).

Open the shutter (20) for reflected light.

4. PROBLEM: Can't capture a digital image.

CAUSE & REMEDY

Camera is not turned on or stabilized yet

Turn on the camera (34) at the black power switch and wait 2 minutes.