User manual

Chapter 3. Installation
23 Version 1.2 Apr 2006
3.5.2 Channel Port I/F Module Removal / Replacement
****CAUTION**** All the following removal/replacement procedures must be done with
all power sources disconnected.
All 4-Channel Port Cards install into the rear of the Fiber Multiplexer. The channel
connector for E1/T1 is held by two "thumb" screws. Loosen both thumb screws (use a flat blade
screwdriver if they are too tight), then remove the connector adapter by gently pulling straight back.
The 4-Channel Port cards are held in by three small flathead screws. Using a No.2 Philips
screwdriver, remove the two upper and one lower screw, then pull the module straight out (refer to
the pictures below). To install the 4-Channel Port module, reverse the procedure, taking care when
seating the module to avoid connector damage. Gently seat it, do not force it! Re-install the three
flathead screws and do not over-tighten. Then re-install the appropriate channel adapter and tighten
the thumb screws gradually and evenly. Tightening lightly with screwdriver if by hand is
insufficient.
Figure 3-6 : 4-Channel Port Module Removal / Replacement
Channel
Adapter
held by
"Thumb"
Screws
4-Channel
Port
Module
being slid
from
chassis
Adapter
removed
exposing
the 4-
Channel
Port
Module