OPTO-EDU A41.1950, Instruction Manual, Page: 22 / 23

A41.1950 Operating Microscope, Dual Head, Motor Zoom, 3x~16x. For Neurosurgery, Brain Surgery, ENT
17
Table 2
Default diagnosing and debugging for A41.1950 Surgical Microscope
(Refer to Fig.2)
Common faults Diagnose and solution method
★
Turning on power supply,
but the instrument has no
movement(Power
switch
(10) and lamp delights, no
control actions, the fans
does not work)

Check up the main power switch (10) whether it is on.

Check up the contact of the socket and plug of power
source whether they are good ;

Check up the fuses of power source whether they
are good,
★
The illumination bittern
tungsten lamp does not
light

Check up the main power switch (10) whether it is on.

Check up the lamp frame whether contacting well ;

Pull out lamp frame (24), check up whether the bittern
tungsten lamp is burnt out ( if bittern tungsten lamp is
burnt out, replace the burnt lamp according to Section
5.6

Check up whether the contact of the socket for bittern
tungsten lamp with porcelain socket is good ( if
contact is not good, remove the oxidize skin of lamp
foot with a file, make reliable contact)

Check up whether the fuse of F
2
, F
3
is good,
（
Note:
Fuse F
2
and F
3
should be changed at the same time
）
.
★
Focusing disabled

Check up whether the contact of Foot controller
socket (7) under control panel is good.

Check up the focusing plug contacting well;

Check up the footstep (2)/(3) for Foot controller (1) is
in position, whether having something under footstep,
clean away if there is any.

Check up whether the fuse of F
4
, is good.
★
Cooling fan stops turning

Turning off the Main power switch (10) immediately.

Check up whether the fuse of F
4
is good.
★
Illuminance drops

Check up whether the optical cable is loose.

The bittern tungsten lamp is used for a long time with
lower efficiency, replace the lamp
★
Unclearity to the object
plane

Repeat focusing to make the operation plane on the
focal plane;

If one eye observes unclearly, regulate the diopter of
the eyepiece

Clean dust on the surfaces of the objective and
eyepieces, see Section 6.
8.2 High quality service promise
To strengthen the connection and exchange with the customers, excellent post sale service will
be provided to the users who purchases our surgical microscope. We declare that the following
promises will be offered to guarantee the microscope in normal operation.