CTC Union FMUX-01, User Manual

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Chapter 3. Installation
3-4
FMUX-01Mar 2003
3.5 Removal/Replacement Procedures
3-5-1. Optical Module Removal / Replacement
****CAUTION**** All removal/replacement procedures must be done with all
power sources disconnected.
The optical interface is installed into the front of the MULTIPLEXER UNIT . The
front plane of the internal mainboard provides both DC power to the optical interface card
and routes signals from the card to the multiplexing/de- multiplexing circuitry. Two
interface connector groups are provided for connection to either the primary optical transmit
and receive pair or to the redundant optical transmit and receive pair (if the optical interface
card as the redundant optical option). From here, the de-multiplexed signals are sent to the
individual 4-CHANNEL Card module/channel installed in the rear of the unit (see 3-5-2 for
removal/replacement procedures).
To remove the interface module, remove the two upper and one lower flat head screws
using a No.2 Philips head screwdriver. Save the screws. Then gently pull the card straight
forward to avoid binding. The card is only held by the friction of the connector. To install
the optical module, reverse the procedure, taking care when seating the module to avoid
connector damage. Gently, don't force it! Re- install the three flathead screws and don't
over-tighten.
Figure 3-5 : Optical Interface Removal / Replacement
Mounting
Screws
Removed