Electrical continuity is assured, between the rack ground and the power supply receptacle via
ground straps
.2/
.
Electrical continuity is assured, between the rack ground and the Line Connection Box (LCB),
if LCBs are present. This operation must be performed before any network connection (see
Figure 0-6).
c. Grounding of Line Connection Boxes (LCBs) not Installed in 2220
Check that electrical continuity is assured between the LCB housing and the premises grounding
system.
There are two ways to insure a proper grounding of the LCB, according to where it is installed:
1) Grounding is insured by the four screws (which secure the LCB on the rack) if the frame of the
rack is connected to the premises ground system.
Screws for
Grounding
Front View
Figure
0-6. LCB Grounding via Screws
2) Grounding is insured by a wire connected from the LCB to the premises ground system, when
the LCB is installed in a rack with frame not connected to the premises ground system.
xxii
2220 Models 300, 500, and 501: Service Guide
Summary of Contents for 2220 Nways 300
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Page 35: ...General and Product Safety xxxiii...
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Page 37: ...General and Product Safety xxxv...
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Page 39: ...General and Product Safety xxxvii...
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Page 41: ...General and Product Safety xxxix...
Page 50: ...xlviii 2220 Models 300 500 and 501 Service Guide...
Page 58: ...2 4 2220 Models 300 500 and 501 Service Guide...
Page 77: ...Chapter 3 Nways Switch Administration Station Functions 3 19...
Page 108: ...4 24 2220 Models 300 500 and 501 Service Guide...
Page 111: ...Chapter 5 2220 Problem Determination Copyright IBM Corp 1998 1999 5 1...
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Page 205: ...Appendix A Schematics A 11...
Page 206: ...A 12 2220 Models 300 500 and 501 Service Guide...
Page 217: ...Catalog Section Appendix D Parts Catalog D 7...
Page 226: ...Assembly 5 2220 Modules 1 2 D 16 2220 Models 300 500 and 501 Service Guide...
Page 244: ...D 34 2220 Models 300 500 and 501 Service Guide...
Page 246: ...E 2 2220 Models 300 500 and 501 Service Guide...
Page 248: ...X 2 2220 Models 300 500 and 501 Service Guide...
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Page 264: ...IBM Part Number 02L4247 Printed in Denmark by IBM Danmark A S 2L4247 SY33 2121 1...
