LG GDK-20W Installation Manual page 20

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
Figure 3.3.2 KSU Mounting Holes & Installation layout
Power Installation
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
* Caution : the GDK-20W Power can not operate with 110~127V AC.
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