LG GDK-20W User Manual

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM     
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
The Power Supply Circuit of the MBU provides power for the system boards and telephones, converting the AC Input 
Voltage to appropriate DC voltages. Before installation, assure that the AC power cord is NOT plugged into the AC 
INLET. The Power Supply Circuit is located on the left upper side of the MBU. 
The GDK-20W Power can only operate 220~240V AC based on the connection of the cable(4-wired) by the CN22 from 
transformer and the connection of the cable(2-wired) by the CN21 to transformer. 

 

Input Voltage 

Connect to 

Fuse 

230V(+10%, -15%) 

CN21 

T800mAH 250V