8 Troubleshooting
Instruction manual BIOM 4 (G/54400/1011/en) 23 / 34
Fundus view is too narrow Too much distance between the ophthal-
moscopy lens and the eye
Magnification of the microscope system
to high
Carefully reduce the distance using the
microscope fine adjustment mechanism
Reduce magnification of the microscope
The eye or the lens reflect strongly The microscope light is on Turn the light off, illuminate only in-
traocular
The BIOM 4 cannot be detached from the
adapter
BIOM 4 has not been tilted to the side for
disassembly
Vacuum has developed between the
BIOM 4 and the adapter, or there are de-
posits on the connecting parts
Tilt the BIOM 4 to the side
Place the BIOM 4 and adapter into an ul-
trasonic bath (for approx. 5 min)
No function whatsoever when the com-
bination foot switch is actuated
The combination foot switch is not
connected to the SDI 4c
The SDI 4c is not connected to the 6V-
15V power supply
Power failure or power outlet is not ac-
tive
The electric sockets on the support are in
use but inactive
Establish the connection to the SDI 4c
Establish the connection to the 6V-15V
power supply
Inform the in-house electrician
Use the 6V-15V plug transformer
Use the mechanical adjusting element or
adjusting wheel
Activate the sockets in accordance with
the instructions for the stand
Ask the microscope manufacturer for as-
sistance
Malfunciton when using the combina-
tion foot switch
5-pole plug has been forcibly plugged in
the wrong way round
Plug it in the right way round (pay atten-
tion to the lug and slot of the polarity re-
versal protection)
Motorized focusing not possible with the
BIOM 4c when using the combination
control unit
BIOM 4c connector not plugged into the
SDI 4c properly
Defective drive belt
Drive belt missing
Connecting cable damaged
Defective drive module
Plug in the connector correctly
Install a new sterile drive belt or focus
manually using the focusing knob at the
BIOM 4c
Install a sterile drive belt
Exchange the drive module
Exchange the drive module
Fault Possible Cause Help
only
BIOM 4c
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