LSK 1500/1550 User Manual, March 2021
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© 2017 Global Payments Inc.
CONFIDENTIAL
LCD and Touch Assembly
LCD Settings and
Indicators
Description
Power, DC Input to SIC
Board
LEDs D3, D4 and D5 on
SIC board always in solid
green
SIC Board LEDs
SIC Board CPU
LED D1 on SIC board
always blinking in green
Communication Selection
Switch
Selection switch SW1 on
SIC board to RS232 or
moved to UP position
VCC Selection Jumper
Selection jumper J1 on
SIC board shorted to 5V or
two pins at top side
ADA Selection Jumper
Selection jumper J2 on
SIC board shorted to ADA
or two pins at left side
Power, DC Input to Video
Board
LED LED3 on video board
always in solid red
Video Board LED
Power, DC Input to LCD
LED D1 on OSD board
always in solid green
OSD Board LED