Components and Functions (Theory)
5-4       LOGIQ V3/V5/V5 Expert – Basic Service Manual
5726264-100 English Rev.8
5-2-1-2 Introduction
WMST PWA is a main board, it provides the main control 
function, 64 channels transmitting/receiving and related signal 
processing, and it connects to CWD board.
SMIO PWA receives all interface signals (such as SATA, USB, 
DDI, Ethernet etc) from WMST board and make necessary 
processing. And then, SMIO provide interface to user (Example: 
USB, HDMI, VGA, TV-out, Ethernet.) It also interfaces with 
SDKG board to provide Keyboard (KBD), LCD, Speaker and 
HDD connection.
SDKG PWA is backplane board; it has a backplane connector 
which interfaces with SMIO board, and provides connection with 
HDD, LCD, Keyboard (KBD) board, Speaker, and USB & Power 
to DC printer.
PIB (Probe Interface board) PWA is a probe interface board. It 
can support 3 probe ports. It switches elements signals, probe 
control signals to the selected probe.
WPWR PWA is a DC-DC power board. It gets DC power from 
ACDC and provides all voltage needed to WMST board and 
SMIO board.
SFAN PWA is a system FAN interface board, it provides power 
and control to system FAN (quantity is 4 internal the box).