Allegion GT-400 Manual de instrucciones
70200-0096_B_GT-400 Lithium Battery 105938
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
Product GT-400
Date May 23, 2014
Subject Lithium Battery Replacement
70200-0096_B_GT-400 Lithium Battery 105938
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 thePCBs from
ESD damage. Remove the two
screws highlighted and set aside
for reuse.
Removal of the IO board
With the terminal still lying 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.
70200-0096_B_GT-400 Lithium Battery 105938
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.
Removal of the back plate
Remove the two screws highlighted and
set aside for reuse. Rotate the top of the
back plate towards you.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Remove the tamper switch connector from the main board. Do not pull by the wires but depress the tab to
release the connector.
Removal of the
lithium battery
Carefully place the
terminal on its top
panel so that you
are looking at the
main board. The
lithium battery is
located above the
SD Card.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
1. Place a finger on top of the lithium battery so that it will not pop out and fall
forward, into the top panel, when the battery is released. If that happens, the
reader will need to be taken completely apart to retrieve the battery.
2. Take a small jeweler’s size flat screwdriver and gently release the battery up on
the right hand side of the battery holder.
Installation of the lithium battery
There are two types of battery holder that may be installed on the main board; one with visible spring
keeps and one without. The installation of the battery is the same either way.
Place the left side of the battery into the battery holder first and snap the battery into place.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Routing the battery cable if there is a backup
battery installed
Make sure that the battery cable is routed around
the camera compartment as shown in the image
above. The area highlighted in yellow needs special
attention when installing the back plate, the wires
here can be easily pinched.
Connecting the tamper switch
Reconnect the tamper switch cable.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Reinstalling the back plate
Start with setting the back plate into the
battery compartment and start rotating
the back plate towards the top. If there is
a backup battery installed, make sure
that the BB-300 cable is not getting
pinched in the lower right hand cable.
Stop when you get to the camera cable.
Pull the backup battery cable through the
back plate as shown above.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Installing back plate screws
This point forward use the torque screwdriver set
to 10.0 in-lbs
Before screwing down the back plate make sure
that neither the BB-300 cable nor the white
camera cable will be pinched.
Install these screws into the two the back plate
inserts. Do not use the longer self-tapping
screws used for the power board or they will
break through the front of the reader.
Reinstalling the power board
Making sure your ground strap is on. Align the 2 x 25 pin
connector and header and gently mate the two boards.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Secure the power board to the unit using the two screws shown in the
image to the right.
Reinstalling the IO board
Align the IO’s 2 x 25 pin
header and connector and
gently press them together
making sure that it is
installed.
Secure the IO board to the
unit with the screws shown
in the image above.
70200-0096_B_GT-400 Lithium Battery 105938
Technical Note
Plugging in the battery backup cable if installed
Replacement complete.
For additional information, please contact Customer Care at 877-671-7011.
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