Specifications

5. Grasp the PCB at the corners and gently rock it out of its connectors in the
backplane board. Remove the PCB.
CAUTION! It is advised to place the removed PCB into an anti-static
bag before handling it any further. Portions of this board are very
sensitive to static charges.
6. Replace the PCB by reversing the previous steps.
7. Install the screw and washer at the card edge mounting bracket to secure the
printed circuit board.
8. Reconnect the cable at the bottom end of the Low Voltage Driver PCB and
tighten the screws in the cable connector.
9. Remove the static grounding strap and replace the card cage cover.
Backplane PCB
The Backplane PCB sits inside the card cage, all the way toward the side of the
chassis leg. It contains the connectors where the other PCBs and all the associated
cables are inserted. Refer to the following procedure for replacing the Backplane
PCB.
1. Turn OFF the power switch to the EMT 10/4T.
2. Disconnect all the harnesses going to the backplane PCB connectors, the
Ethernet PCB cable, and the low
voltage driver PCB harness.
3. Remove the entire card cage by
removing the four screws holding
it to the side of the right chassis
support leg (see Figures 2-20).
4. Remove the card cage cover and
install a static grounding strap
between the working surface and
the personnel performing this
procedure.
5. Remove all the other printed
circuit boards as earlier described.
6. Remove the screws holding the
cover over the backplane PCB
connectors (see Figure 2-21).
backplane
connectors
cover
card
cage
2 of 4
screws
Figure 2 - 20
2 - 28 Electronics Section
EMT 10/4T Technical Manual Melco Embroidery Systems