A series user manual
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4.1.4 Front maintenance of receiving card, Hub Card, and power
supply
According to the operation method of 4.1.3, open the power box from the front of the screen, then
disassemble and replace the receiving card, Hub Card , and power supply inside the Hub Card box
individually.
Maintenance of receiving card
Open the power box, remove the two screws of the
receiving card, and replace the failed receiving
card.
Maintenance of upper and lower Hub Card
❶ Open the power box, and remove the DC cable
and flat cable on the Hub Card.
❷ Use a PH2 Phillips screwdriver to remove the
four screws which fix the Hub Card, replace the failed
Hub Card and restore the wire connection.
Maintenance of the Hub Card in the middle
❶ Open the power box and remove the DC
cable, flat cable and network cable on the Hub Card
❷ Use a PH2 Phillips screwdriver to remove the
four screws on the intermediate Hub Card replace
the failed Hub Card, and restore the wire
connection.
Maintenance of power supply
❶ Open the power box, use PH2 Phillips screws to
remove the cable from the power supply
❷ Use a Phillips screwdriver to remove the four
nuts that fix the power supply to replace the failed
power supply, and restore the cable connection.