8
、
The image on the monitor is
not clear when the focusing
knob is turned.
The focus of video is not
correct
Readjust the focus of
video to a correct
position
Diopter adjustment is not
correct
Adjust the diopter
9
、
Eyes fell tired easily
Brightness of light is not
correct
Adjust the brightness
No power supply
Check the connection
with the power supply
The bulb was not inserted
correctly
Insert it correctly
10
、
Bulb does not work when
the switch is on
Bulb is wrong
Replace with a new one
Use the wrong bulb
Replace with a correct
one
11
、
Bulb is burned out
suddenly
The voltage is too high
Control the voltage
Eg: use voltage
regulator
Use a wrong bulb
Replace with a correct
one
12
、
Brightness is not enough
The voltage is too low
Increase the input
voltage
The bulb will burn out soon
Replace with a new one
13
、
The bulb flickers or the
brightness is unstable
The bulb was not inserted
correctly
Insert it correctly
7-2
Video troubleshooting
Trouble
Cause
Remedy
1
、
Incision image appears in
the video view
The pole is not in correct
position
Draw it to the correct
position
Dirt on the specimen
Clean the specimen
2
、
Dirt appears in the video
view
Dirt on the surface of
objective
Clean the surface
3
、
Image is not clear while
the focus changing
The image is not clear in the
high magnification
Readjust the high
magnification
The draw pole is not in
correct position
Draw it to the correct
position
Objective cover is not open
Open it
4
、
No image on the TV
screen
TV is not on Video channel
Choose the correct one
Connection is not correct
Reconnect the circuit
Objective cover is not open
Open it
5
、
No image on the
Monitor
The input signal does not
accord with the signal be
chosen on the Monitor
Choose the correct signal
model
