User's Manual Part 5

ROI-S05751 CORRECTIVE MAINTENANCE
5-43
Chart 5-4 (Cont’d)
Step Procedure
Replacing the CTRL Using the MMC or LCT.
This procedure explains how to replace the CTRL using the MMC or LCT.
This procedure is applied when the CTRL is not failed, or when the
equipment configuration data are saved into the MMC or LCT/PNMx.
Note: If the NMS parameters (Network Config.) can not be restored,
then the resetup with the PNMx is required.
The Use of the MMC for the CTRL Replacement
When the MMC is used, the replacement can be performed without the
LCT operation.(The resetup with the PNMx for the Network Config. is
necessary.)
1 Insert the MMC into the MMC slot on the CTRL front, (The
data size to save is approximately 10 kbyte.)
2 Set the PROTECT SW on the CTRL front to ON position (for
upper side). Then, the MAINT LED (amber) on the IDU is lit
and the equipment configuration data gather up and the saving
of data to the MMC start,
3 When the equipment configuration data gather up and data
saving to the MMC has been completed, the MAINT LED on
the IDU blinks slowly, (Check that the MAINT LED blinks
slowly when remove the CTRL.)
4 Remove the cables connected to the CTRL, loosen two fixed
screws and remove the CTRL,
Note: Be careful not catch the module on the cable when
extracting the module. If the module caught on the live
cables, it may be caused radio link error.
5 Prepare the spare CTRL. Set the PROTECT SW on the spare
CTRL to ON position (for upper side), (The PROTECT SW
setting distinguish the normal start up or protected start up.)
Mount the CTRL into the IDU. Check that the MAINT LED on
the IDU blinks. Tighten two screws and connect cables removed
in step 4.