7
An LED “bulb” will last up to 50,000 hours so you don’t have to do this exercise very often.
To open the illuminators field lens housing, use 0.9mm “L” type hex key wrench supplied with your microscope.
Loosen hex screws on lens housing. Remove lens housing to expose LED “bulb”. Remove bulb by grasping the
plastic base of bulb and gently pulling straight up. Insert new LED “bulb”, replace lens housing and tighten hex
screw to secure lens housing in place.
TROUBLESHOOTING
PROBLEM
REASON FOR PROBLEM
SOLUTION
Light fails to operate.
Batteries fully discharged.
Recharge batteries.
Rheostat control not turned far
enough.
Turn rheostat to increase light
intensity.
Light switch in off position.
Turn light switch on.
LED “bulb” burned out.
Replace LED “bulb”.
Image does not remain in focus
Stage of microscope drops from
its own weight.
Adjust tension control.
Unable to focus image
Rack stop not set at proper
position.
Adjust rack stop.
Slide upside down.
Place slide on stage with cover
slip up.
Slide cover slip too thick.
Use 0.17mm thick cover slip
(No.1 cover slip)
Poor resolution
(image not sharp)
Objective lenses dirty.
Clean objective lenses.
Eyepiece lens dirty.
Clean eyepiece lenses.
Too much light.
Adjust iris diaphragm.
Spots in field of view.
Eyepiece or condenser lens dirty. Clean lens. ***
Specimen slide dirty.
Clean slide.
***Spots in field of view can also result from dirt on inside of eyepiece. It is recommended that you have
service technician clean inside of lens.
OPTIONAL ACCESSORIES AND PARTS:
#610-045R
WF10x eyepiece w/reticle, 10mm/100div.
#615-045
WF15x eyepiece w/pointer
#760-045
DIN 60xR objective lens, N.A. 0.90
#800-001
Replacement LED light
#802-003
Replacement auto cut-off recharger for rechargeable LED microscopes.
#910
Graduated mechanical stage, side mount adjustments (installed by end user)
#951
Dustcover, 16” tall x 13”, heavy vinyl with stitched seams.
#975-001
Carrying case, anodized aluminum, fabric lining, accessory pockets, Velcro straps, keyed lock.
LIMITED LIFETIME WARRANTY
(Revised 6/24/14)
