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

1.2 Memory Chip Information
The 1838 is shipped with memory chips pre-installed. Do not remove or re-install the memory
chips with power to the system turned on. Doing this will irrevocably damage the memory
chips. Memory chips are static sensitive. Discharge any static electricity from your hands by
touching a proper ground device before removing the control board or memory chips. Handle
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-U-4-13 Page 11