DKS 1838 - Memory Chip Replacement

1838-065-A-9-15
8
1.3 Memory Chip Replacement
The 1838 access controller is shipped with the memory chip already installed in the unit. However, if you need to
replace the memory chip in the NEW 1838 access controller or replace the memory chips in an OLDER 1838, follow the
instructions below. See 3.1.3 Memory Chip Identification for info about the memory chips in older 1838 access controller.
DO NOT install the memory chip(s) with power to the access controller turned ON. Attempting to install the memory chip(s)
with power on will irrevocably damage the chip(s). The memory chip(s) are static sensitive components. Discharge any static
electricity from your hands by touching a proper ground device before touching the control board. Handle the memory chip(s)
with care, the pins bend easily.
DO NOT install the memory chip(s) in the WRONG orientation. this will cause permanent damage to the chip(s). Be sure that
the memory chip is seated correctly in the socket.
CAUTION
1838 Circuit Board Memory Chip(s) Location
NC
NO
NO
RING
NC C
ON
SPK VOL
FEED BACK
RS 232
ELEVATOR
1234567891011121314
1 2 3
MIC VOL
OFF
KEYPAD
321
321
321
MASTER CODE
16AC16ACBAT1NO1NC1C2RY2CAZIMC5VDCIMDSPKRCOMMICPSWCGNDPHONE
Power MUST be OFF to the Circuit Board!!
Discharge any static electricity from your hands by touching a proper ground device before installing chip(s)!
TONE ON
TONE OFF
Note: NO APB chip
installed on NEW
1838 board, ONLY on
older 1838 boards.
Dimple MUST be
on the RIGHT SIDE
of the chip!
Dimple MUST be
on the RIGHT SIDE
of the chip!
Memory
Press Fit
Be Careful!
APB
Memor
y
Release
Locked