Schlage GT-400 Technical Note

GT-400 Lithium Battery Replacement TECHNICAL NOTE

Graphic guide to the replacement of the lithium battery in the GT-400

Tools needed

 ESD Grounding Strap worn at all times
 Antistatic mat clear of debris to protect the terminal from scratches
 #2 Philips Screwdriver for the disassembly of theGT-400
 Small flat Jeweler’s type screwdriver
 Torque screwdriver must be used for the reassembly of the GT-400 set to 10.0 in-lbs

Rev. A 1
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GT-400 Lithium Battery Replacement TECHNICAL NOTE

Removal of the back plate

Lay the GT-400 terminal face down of a clean antistatic mat to protect the surface from scratches and the
PCBs from ESD damage. Remove the two screws highlighted and set aside for reuse.

Rev. A 2
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GT-400 Lithium Battery Replacement TECHNICAL NOTE

Removal of the IO board

With the terminal still laying face down and while wearing the ESD ground strap hold the IO board by the
edges and gently pull the board towards you and set aside.

Rev. A 3
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GT-400 Lithium Battery Replacement TECHNICAL NOTE

Removal of the Power board

Remove the two screws highlighted and set aside for reuse. Hold the power board by the edges and gently pull
the board towards you and set aside.

Rev. A 4
08/2011 70200-0096_A_GT-400_Lithium _Battery_Replacement

GT-400 Lithium Battery Replacement TECHNICAL NOTE

Removal of the back plate

Remove the two screws highlighted and set aside for reuse. Rotate the top of the back plate towards
you

Rev. A 5
08/2011 70200-0096_A_GT-400_Lithium _Battery_Replacement