Service Manual

GSM-205-523
Replacing a CCB
31st Oct 01
Maintenance Information: Horizon macro indoor
68P02902W09-B
CONTROLLED INTRODUCTION
Maint. 2–29
Replacing a CCB
Overview of
CCB
replacement
CCBs, or their associated CCB control boards, can be individually replaced. It is
assumed that the OMC-R has identified which item requires replacement. CCB
block 0 is the right most block looking from the front, as shown in Figure 2-12,
and is the main CCB, with master CCB control board. CCB block 1 is the
extension CCB, with an optional redundant CCB control board.
The replacement of CCBs can only take place after the cabinet has been taken
out of service, in agreement with the OMC-R.
View of CCBs in
stacking
bracket
Figure 2-12 shows the CCBs located in stacking bracket (cabinet not shown).
ig.336.rh
CCB BASKET BAR
CCB1
CAPTIVE SCREW
ON BAR
CCB0
CCB CONTROL
BOARD
(MASTER)
CCB CONTROL
BOARD
(REDUNDANT)
CAPTIVE SCREWS
ON CCB BASKET
Figure 2-12 CCBs in installed position with CCB basket bar attached