Motorola MTR2000 T5544 Instruction / Field Service Manual page 145

Replacing Wireline Interface Board
68P81096E17-E
09/30/05
Replacement Procedure
1. Turn off station power by turning off breaker at ac source.
2. Ensure that an ESD cable is connected to the station.
3. Remove Wireline Interface Board from top option card slot by care-
fully pulling straight out from the station. 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. Ensure that the correct Wireline Board is being installed.
5. Set all jumpers on replacement board to match those on the faulty
board. These include input/output impedance matching jumpers
(refer to Wireline Interface Board section of this manual for more in-
formation).
6. Install replacement Wireline Interface Board by sliding board into top
option card slot, and firmly seating the board Euro-card connector
into the mating backplane connector. (Do not slam the board against
the backplane or push any harder than necessary to seat the connec-
tors.)
7. Restore power to the station.
Post-Replacement Optimization Procedure
1. Perform the Rx Wireline and Tx Wireline adjustment procedures lo-
cated in the RSS Service menu online help facility. This includes se-
lecting the 2-wire or 4-wire configuration. Ensure that the Wireline
Board is aligned according to relevant leased line specifications.
Troubleshooting
31