15
1800-060 Issued 7-19
Version A
RING
ON
CLCK
SENSE
SPK
VOL
FEEDBACK
MIC VOL
OFF
KEYPAD
321
321
321
MASTER
CODE
NO
HS
TONE
OFF
TONE
ON
HF
NC C
CONTRAST
DOORKING 1862-010
16AC16ACBAT NONCC
COMSPKR
MICMICGPSWCGND
PHONE
1.5 Memory Chip Replacement
The Telephone Entry System is shipped with the memory chip already installed in the unit. However, if you need to
replace the chip, follow the instructions below.
CAUTION
1862-010 Circuit Board Memory Chip Location
Locked
Release
Power MUST be OFF to the Circuit Board!!
Discharge any static electricity from your hands by touching a proper ground device before installing chip!
Dimple MUST be at
the top of the chip!
1810-075
sn XX
THIS SIDE UP
0000010100010
1810-075
sn XX
THIS SIDE UP
0000010100010
LCD Display (Models 1803
and 1810 only)
DO NOT install the memory chip with power to the telephone entry system turned ON. Attempting to install the memory
chip with power on will irrevocably damage the chip. Memory chip is 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 chip with
care, the pins bend easily.
DO NOT install the memory chip UPSIDE DOWN. this will cause permanent damage to the chip. Be sure that the memory
chip is seated correctly in the socket.
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