General DataComm 551 Operating And Installation Instructions page 30

Intelligent channel service unit
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INSTALLATION
3
FIGURE 2-2. DataComm ENCLOSURE COVER REMOVAL PROCEDURE
2-4
2
1
CAUTION: DISCONNECT
POWER CABLE AND PHONE
CONNECTIONS BEFORE
REMOVING COVER.
WITH FRONT OF UNIT
1
FACING LEFT, TURN SCREW
TO RELEASE COVER.
LIFT RIGHT END OF COVER
2
UPWARD. (FOR DUAL-CARD
PRODUCTS, SPREAD OUT
THE SIDES OF THE COVER
TO CLEAR THE UPPER
CARD.)
SLIDE COVER TO LEFT WITH
3
AN UPWARD MOTION.
WHEN REINSTALLING
COVER, TOP EDGE OF REAR
PANEL MUST SIT BETWEEN
THE TWO RIDGES ON
UNDERSIDE OF COVER.

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