7
b. Replacing batteries:
Your microscope includes 3 rechargeable AA nickel metal hydride batteries. These may be
recharged up to 500 times, but if you observe that a recharge is providing significantly less than 40
hours of operation. It is probably time to replace to batteries.
IMPORTANT WARNING: DO NOT USE REGULAR ALKALINE BATTERIES IN THIS
MICROSCOPE. ANY ATTEMPT TO RECHARGE ALKALINE TYPE BATTERIES COULD RESULT
IN BATTERIES EXPLODING.
Gently lay microscope on its side or back. Observe door at front of microscope bottom base.
Loosen slotted screw on door and open. Battery case is mounted on inside of door. Using small
Phillips screwdriver, carefully remove Phillips screw that holds battery case together. Slide lid of case
straight out to remove and expose batteries. Remove all 3 batteries and replace with new
rechargeable AA nickel metal hydride batteries, making certain to insert with correct polarity
according to markings on battery holder. Replace lid, close and secure door.
Follow instructions on new battery packaging to determine if they are already charged, or if they
should be charged before initial use. If recharging is required, following directions in “3.a” above.
c. Replacing LED element:
An LED “bulb” will last up to 50,000 hours, so you don’t have to do this exercise very often.
To open the illuminator 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 screws 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.
Image will not focus
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 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.
