User manual

Maintenance
Card Maintenance
10-2 July 2004 Wide Bank 28 DS3 - Release 2.4
Card Maintenance
The Wide Bank is equipped with one or two Controller cards for processing and high-speed
connections. For Low-Speed (LS) connections the Wide Bank can have from one to seven active low-
speed cards and one spare low-speed card. These cards contain all the Wide Bank circuits, and can be
removed and replaced with power on (hot-swapped).
WARNING! SEE PROPER ELECTROSTATIC DISCHARGE (ESD)
PROCEDURES WHEN REMOVING AND HANDLING THE LOW-SPEED AND
CONTROLLER CARDS. WE RECOMMEND THAT YOU WEAR A RESISTANCE-STYLE
WRIST STRAP TO GROUND YOURSELF THROUGH THE EQUIPMENT CHASSIS. SEE
S
TATIC-SENSITIVE EQUIPMENT HANDLING PROCEDURES ON page 5-3 FOR
INSTRUCTIONS ON HOW TO USE A WRIST STRAP.
Card Locations
The following figure shows card slot and circuit locations. The Controller cards occupy the two wide
slots at the top left of the chassis. Any low-speed card slot, including the spare slot, can contain either
a standard LS card or an MSO card. The figure below shows both low-speed card types for purposes
of identification but it is recommended that all cards be the same type.
Figure 10-1 Card Locations (front view)
LS Card #1
(circuits 1-4 T1,
1-3 E1)
LS Card #2
(circuits 5-8 T1,
5-7 E1)
MSO card
LS Card #3
(circuits 9-12 T1,
9-11 E1)
LS Card #6
(circuits 21-24 T1,
21-23 E1)
MSO card
LS Card #4
(circuits 13-16 T1,
13-15 E1)
LS Card #5
(circuits17-20 T1,
17-19 E1)
LS Card #7
(circuits 25-28 T1,
25-27 E1)
Controller
Card B
Controller
Card A
Spare LS CardFan Connector Fan Connector