14-14 MTR3000 Maintenance and Disassembly/Reassembly: Disassembly and Reassembly – Detailed
10. Remove the backplane interface board shield.
11. Remove the two linear regulator screws (Refer to Figure 14-10) at the bottom centre of the
backplane interface board.
12. Place the backplane interface board to the side.
13. Ensure the correct backplane interface board is being installed.
14. Install the replacement backplane interface board and shield with the six screws.
15. Reconnect all the cables which were removed previously according to the disassembly steps
(Refer to step 2 to step 8).
16. Restore power to the base station/repeater.
14.7.2.9 Wireline Interface Board
1. Make sure the base station/repeater power is turned off at the breaker to the AC or DC
source.
2. Ensure that an ESD cable is connected to the base station/repeater.
3. Remove the Wireline Interface Board from the top option card slot by carefully pulling it
straight out from the base station/repeater (BR). Use the Option Card tool (part #
6683334X01) to pull the card out. Make sure that the board is placed on properly grounded
anti-static surface.
4. Set the 2-wire and 4-wire DC Remote control jumpers on the replacement board to match
those on the faulty board.
5. Install the replacement Wireline Interface Board by sliding the board into top option card slot,
and firmly seating the board Euro-card connector into the mating backplane interface board
connector. (Do not slam the board against the backplane interface board or push any harder
than necessary to seat the connectors).
6. Affix the provided Part 68 label to the area noted in Figure 14-11 (if not already present).
Figure 14-11 Location to affix the Part 68 label
7. Restore power to the base station/repeater.
To control the amount of preload and to prevent under or over
torque, refer to Section 14.10 on page 14-17 (Backplane M3
screws) for the size fastener of screw torque to be applied on
the two linear regulator screws.
Note
The Part 68 label is supplied if the MTR3000 Wireline Card is ordered as an option with the
MTR3000 base station/repeater.
C a u t i o n
Designated area
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