Memory Chip Replacement - DoorKing 1837 Owner's Manual

1.5 Memory Chip Replacement

The 1830 entry system is shipped with the memory chip already installed in the unit.
replace the memory chip in the NEW 1830 entry system or replace the memory chips in an OLDER 1830, follow the instructions
below. See 3.1.3 Memory Chip Identification for info about the memory chips in older 1830 entry systems.
DO NOT
install the memory chip(s) with power to the telephone entry system turned ON.
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) UPSIDE DOWN.
memory chip is seated correctly in the socket.
Discharge any static electricity from your hands by touching a proper ground device before installing chip(s)!
1830 Series Circuit Board Memory Chip
RS 232
BACKLITE
CUTOFF
3 2 1
SINGLE
DISPLAY
CONTRAST
MIC
VOL
3 2 1
SPK
VOL
FEED
BACK
3 2 1
TONE ON
TONE OFF
RING
PHONE CGND PSW MIC
10
Power MUST be OFF to the Circuit Board!!
8 LINE
DISPLAY
LINE
ON
MASTER
CODE
OFF
KEYPAD
NO NC C
COM SPKR IMD 5VDC IMC Z A 2C
CAUTION
this will cause permanent damage to the chip(s). Be sure that the
s Location
( )
ELEVATOR
NO
NC
2RY 1C 1NC 1NO BAT 16AC 16AC
However, if you need to
Attempting to install the memory
1
2
3
L o
Note: NO APB chip
P r e
installed on NEW
s s
B e
1830 board, ONLY on
C a
r e f
older 1830 boards.
Dimple MUST be at
the top of the chip!
M e
m o
r y
R e
l e a
s e
c k e
d
Dimple MUST be at
the top of the chip!
A P
B
M e
m o
r y
F i t
u l !
1835-067-A-9-18