Service Inspection Safety Procedures
Introduction
A safety inspection procedure for the 2220 should be performed:
When it is inspected for an IBM agreement
When IBM service is requested and no service has recently been performed by IBM
When an alterations and attachments review is performed
When changes have been made to the equipment that might affect its safety.
If the inspection indicates unacceptable safety conditions, the conditions must be corrected before IBM
services the equipment.
Note: The correction of any unsafe condition is the responsibility of the owner of the equipment.
The 2220 areas and functions checked through these procedures are:
1. External covers
2. Safety labels
3. Grounding (earthing)
4. Circuit breaker and circuit protector rating
5. Input power voltage
6. Power ON indicators
7. Emergency power OFF of the board
8. Cooling
Steps 1 through 8 must be performed Power OFF, as follows:
Main CBs switched OFF on the 2220.
All the equipment installed in the 2220 rack or connected to it is OFF.
Power supplies at customer premises are switched OFF.
On the 2220 do not remove the power cords and ground wire
.A/
in order to maintain the ground
protection (see Figure 0-1 on page xix).
1. External Covers
Check that:
All external covers are present on the 2220.
Appropriate service clearances and accesses are provided around the racks with external covers
opened.
Leave all external covers opened to allow further inspection steps.
2. Safety Labels
Check that:
All the safety labels are at the places indicated by letters in “Safety Label Locations” on page xl.
Each label corresponds to the correct model as indicated by the letter as shown in “Safety Label
Identifications” on page xliv.
xviii
2220 Models 300, 500, and 501: Service Guide
Summary of Contents for 2220 Nways 300
Page 1: ...2220 Nways BroadBand Switch Models 300 500 and 501 IBM Service Guide SY33 2121 01...
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Page 12: ...x 2220 Models 300 500 and 501 Service Guide...
Page 35: ...General and Product Safety xxxiii...
Page 36: ...xxxiv 2220 Models 300 500 and 501 Service Guide...
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...
Page 118: ...5 8 2220 Models 300 500 and 501 Service Guide...
Page 194: ...6 76 2220 Models 300 500 and 501 Service Guide...
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...