DESCRIPTION OF OPERATION
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© ESAB AB 2017
LED indication
LED Function State Description
LEDs on welding data board 1AP1
D16 Link status
Off Not connected
On Connected
D17 Speed
Off 10 Mb/s
On 100 Mb/s
D18 Communication status
Off No activity
On Activity
1AP1:7 USB-host B (internal), from serial no. 628-xxx-xxxx
From serial no. 628-xxx-xxxx the PEK control unit is equipped with a second USB
connector. This connector, USB-hostB, is only accessible from inside the unit. It is located
on the MMC/Welding data board1AP1 and designated CN17. ConnectorCN16 is
connected in parallel with connectorCN17.
Circuit diagram for USB-host B (internal)