User's Manual Part 5

ROI-S05751 CORRECTIVE MAINTENANCE
5-49
Chart 5-4 (Cont’d)
Step Procedure
B. IDU REPLACEMENT
REMOVING
1 Turn off the power switch on the MODEM (both MODEM in
1+1 configuration),
2 Disconnect the IF cable, signal cables and the power cable, etc.
as following order,
(1) Disconnect XPIC CTRL cables from opposite IDU. (XPIC
configuration only.)
(2) Disconnect XIF coaxial cables from opposite IDU. (XPIC
configuration only.)
(3) Disconnect OC-3, LAN, Aux. signal cables from connector.
(4) Disconnect power supply cable from SELV connector.
(5) Disconnect IF cable from IF IN/OUT connector.
(6) Disconnect ground cable from the ground terminal
Note: The adapter for IF cable connector is reused.
3 As shown in Fig. 5-9, loosen four screws and remove the IDU,
MOUNTING
4 Fix the two brackets to desired position on the IDU, if necessary
(see Fig. 5-10),
5 Mount the IDU into the original position of the mounting rack
and tighten the four screws,
6 Reconnect the IF cables, signal cables and the power cable to
the original position as following order,
(1) Connect ground cable to the ground terminal
(2) Connect IF cable (with adapter) to IF IN/OUT connector.
(3) Connect power supply cable to SELV connector.
(4) Connect OC-3, LAN, Aux. signal cables to proper
connector.
(5) Connect XIF coaxial cables to opposite IDU. (XPIC
configuration only.)
(6) Connect XPIC CTRL cables to opposite IDU. (XPIC
configuration only.)