DoorKing PC Compatible Multi-Door Access Controller 1838 - Manual (Page 11)

1.2 Memory Chip Installation
The access controller is shipped with two memory chips packaged in a separate box inside the
shipping container. The memory chips must be installed for the system to operate.
CAUTION!! Do not install the memory chips with power to the system turned on. Attempting
to install the memory chips with power on will irrevocably damage the chips. Memory chips
are a static sensitive component. Discharge any static electricity from your hands by
touching a proper ground device before removing the control board. Handle the memory
chips with care.
1. The large memory chip socket is colored black and is located in the center of the circuit
board. Be sure that the handle is in the un-locked position (pointing up). Be sure that
power to the telephone entry system is off.
2. Carefully insert the memory chip into the socket. The small half circular indentation on
the chip must be to the right. CAUTION: Installing the memory chip backwards will
cause permanent damage to the chip. Be sure that the memory chip is seated correctly
in the socket, then move the lever to the locked position.
3. Install the small memory chip in the socket located at the bottom of the circuit board. The
small circular indentation on the chip must be to the right. CAUTION: Installing the
memory chip backwards will cause permanent damage to the chip. Be sure that the
memory chip is seated correctly in the socket.
1838 Series Circuit Boards Memory Chip Location
1
1 Dimple on chip must be towards the right!
1
DOORKING, INC., INGLEWOOD, CA 90301
Date: Dwg. No.
1838 Series Memory Chip Location
Rev.
Title:
4/03 A M1838-065-2
1838-065-L-3-10 Page 11