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Inspection procedure
09/93 3691-DMF
Service Manual M695
Doc Code 636 718
2.1
Turn LAMP potentiometer on control unit from min. to max.
•
Reading on test box: LAMP REF.
min./max. 0.3......5v.
The brightness of the microscope lamp is continuously adjustable.
2.2
Activate the quick-change lamp mount.
•
The spare bulb is moved into the beam path, and lights up.
•
The orange indicator springs out.
(Push the orange indicator back into the rear wall)
(Fault location in lamp control: page 4-7)
3.1
Turn the ZOOM SPEED potentiometer from min. to max. and from max. to min.
•
Reading on test box: ZOOM SPEED
min./max 1.84...2.34Vl5V ±5%
The zoom speed is continuously adjustable.
3.2
Use foot-/handswitch to activate ZOOM UP.
•
Reading on test box: ZOOM UP
Low/High <0.2V/>4.75V
3.3
Use foot-/handswitch to activate ZOOM DN.
•
Reading on test box:
ZOOM DN
Low/High <0.2V/>4.75V
(Fault location in ZOOM control: page 4-8)
3.4
Mechanical zoom movement.
•
Zoom moves uniformly in both directions.