Meade LX90 instruction manual Appendix D Changing the LNT Module Battery, To replace the battery

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Top Alignment

Side

 

screw

Alignment

 

 

screw

 

 

 

 

 

 

 

Fig. 34: The LNT Module, with alignment screws and Atomic Time Update port visible.

Top Alignment

screw

Atomic Time

 

 

Update Port

Side

Spring Alignment

screw hole

Fig. 35: Interior side view of LNT Module.

 

Top Alignment

 

screw hole

Cover

Battery

 

Side

Spring

Alignment

screw hole

 

Fig. 36 Interior top view of LNT module.

APPENDIX D: CHANGING THE LNT MODULE BATTERY

The LNT Module uses a lithium coin CR2023 battery that will last about 5 years and is installed with the original LNT Module assembly. After you replace the battery, you will need to recalibrate the telescope’s sensors and reset the time and date. You will need a new battery. Also, you may use Meade’s optional Atomic Time Update Module, although this is not necessary.

To replace the battery:

1.Remove the top alignment screw cap/long bolt from the LNT Module. See Fig. 34.

2.Remove the side alignment screw cap/long bolt from the LNT Module. Take note that there are two springs inside the LNT. One spring sits between the top and bottom of the unit. The second spring is on the side of the unit that rests between the bottom and the top sections. One long bolt passes through the top spring and the other long bolt passes through the side spring. Set the springs aside as you will need to replace it later in this assembly . See Fig. 35 and 36.

Important Note: Note there is some wiring inside the LNT Module. Be careful not to pull on the wiring. If it is necessary to move the wiring aside, do so carefully.

3.Carefully lift the top section of the unit from the bottom section. Do not remove the bottom section or disassemble the rest of the unit.

4.Remove the old battery. Note the spring.

5.Insert the new (user-supplied) battery. Take care to orient the battery so that the side with the battery markings is facing the top.

6.Replace the top spring in place and the LNT Module cover.

7.Replace the top bolt and tighten the cap to a firm feel.

8.Hold the side spring in place with your fingers and slide the spring between between the top and bottom sections. The spring should line up with the mounting holes for the side long bolt. Slide the long bolt through the side hole, then through the spring and finally through the bottom of the LNT Module and tighten to a firm feel.

9.Next you will need to recalibrate the LNT Module sensors. Select Calibrate Sensors from the Setup: Telescope menu.

10.Press ENTER. The telescope will automatically find North, detect level and the tilt of you telescope, and calibrate the sensors.

11.Next, follow the instructions included with the Atomic Time Update Module optional accessory to reset the clock.

OR

Enter the date and time manually using the Date and Time options in the Setup menu.

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Contents LX90 Schmidt-Cassegrain Telescope Meade Schmidt-Cassegrain Optical System Contents QUICK-START Guide ON/OFF Telescope Features E DPage To Attach the Handbox Holder Autostar Features Tour the Cosmos with Just the Push of a ButtonTopmost screen Select Item Object Page How to Attach the Tripod to the Telescope Assembly Getting StartedHow to Assemble Your Telescope Precautionary notes for the tripodUsing SmartFinder Choosing an EyepieceAligning SmartFinder Aligning the ViewfinderObserving By Moving the Telescope Manually Observing Using AutoStars Arrow KeysObserving Terrestrial ObservingSlew Speeds Observe the MoonMoving Through AutoStar’s Menus Astronomical ObservingTo Track an Object Automatically Initializing AutoStar for the First TimeAutomatic Alignment Observe a Star using the Automatic Tracking FeatureHow to perform the Automatic Alignment procedure While it does soUsing the Guided Tour Go To SaturnBasic Autostar Operation AutoStar Navigation ExerciseEntering Data into AutoStar Navigating AutoStarTo Calculate Sunset time AUTOSTAR’S Menus Select Item ObjectMenus and Menu Options Object MenuEvent Menu Glossary MenuUtilities Menu Observing Considerations Setup Menu Time Zone Shift Menu Daylight SAVING, To Add a Site to the user-defined site list Advanced Autostar FeaturesAdding Observing Sites To Edit a SiteUsing AutoStar to Find Objects Not in the Database Observing Satellites To GO to a user-entered objectWhat you will need How to Create Your Own Guided TourCommand Line Tour ModesWriting a Tour TitlePick END To Add a landmark to the database LandmarksDownloading Tours To Select a landmark from the databaseTo perform a Landmark Survey IdentifyAdvanced Alt/Az Alignment To check on the available amount of memory in AutoStarBrowse Two-Star Alt/Az AlignmentOne-Star Alt/Az Alignment Photography with the LX90 Few tips on photography with the LX90Photography with a Digital Camera Photography with Meade’s AutoStar Suite Meade Deep Sky ImagerSuper Wide Angle 6-elements Optional AccessoriesEyepiece Power 2x Barlow Super Plössl 4-elements Ultra Wide Angle 8-elements#62 T-Adapter Maintenance CollimationPage Meade Customer Service Inspecting the OpticsGauging the Movement of the Telescope LX90 Specifications AutoStar SpecificationsAutoStar Dimensions Polar Alignment Celestial CoordinatesAutoStar Polar Alignment Setting CirclesLocating the Celestial Pole Easy Polar AlignmentLining Up with the Celestial Pole Equatorial WedgePrecise Polar Alignment Star Charts City Country Latitude Latitude Chart for Major Cities of the WorldCity State/Prov./Country Latitude City State/Country LatitudeAppendix C Training the Drive Appendix D Changing the LNT Module Battery To replace the batteryAutoStar Glossary Objects in SpaceMoon Planets Deep-Sky ObjectsPage Page Page Meade Limited Warranty
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