Caution, Power must be off to the circuit board, Do not – DoorKing 1833 PC Programmable User Manual
Page 17: Locked release press fit, Dimple must be at the top of the chip, Be careful
1835-065-E-7-13
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1.5 Memory Chip Replacement
The telephone entry system is shipped with the memory chips already installed in the unit.
However, if you need to
replace the memory chips (to match an older unit, for example), follow the instructions below. See 3.1.3 Memory Chip Identifi-
cation for information about the memory chips in your specific telephone entry system.
DO NOT
install the memory chips with power to the telephone entry 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 touching the control board. Handle the memory chips
with care, the pins bend easily.
DO NOT
install the memory chips UPSIDE DOWN. this will cause permanent damage to the chips. Be sure that the memory
chips are seated correctly in the sockets.
CAUTION
1830 Series Circuit Board Memory Chip Locations
Dimple MUST be at
the top of the chip!
Dimple MUST be at
the top of the chip!
Locked
Release
Press Fit
Be Careful!
NC
NO
NO
RING
NC
C
ON
CLK
SEN
SPK
VOL
FEED
BACK
RS 232
ELEVATOR
12
34
5
6
7
8
9
10
11
12
13
14
1
2
3
MIC
VOL
OFF
KEYPAD
3 2 1
3 2 1
3
2
1
MASTER
CODE
16AC
16AC
BAT
1NO
1NC
1C
2RY
2C
A
Z
IMC
5VDC
IMD
SPKR
COM
MIC
PSW
CGND
PHONE
Power MUST be OFF to the Circuit Board!!
Discharge any static electricity from your hands by touching a proper ground device before installing chips!