IBM 3745 Series, Руководство по установке и обслуживанию

Страница: 18 / 270

Lea atentamente todas las declaraciones de precaución y peligro ante
de llevar a cabo cualquier operación.
For the service processor safety notices refer to Appendix A, “Safety
Information” on page A-1
For 3745 all Models and 3746 Models 9X0 safety notices refer to IBM 3745
Communication Controller All Models, IBM 3746 Expansion Unit Model 900, IBM
3746 Nways Multiprotocol Controller Model 950, Safety Information, GA33-0400
Safety Notices for United Kingdom
1. The IBM 3746 Expansion Unit Model 900 and IBM 3746 Nways Multiprotocol
Controller Model 950 are manufactured according to the International Safety
Standard EN 60950 and as such are approved in the UK under the General
Approval Number NS/G/1234/J/100003 for indirect connection to the public
telecommunication network.
2. The network adapter interfaces housed within the IBM 3746 Expansion Unit
Model 900 and IBM 3746 Nways Multiprotocol Controller Model 950 are
approved separately, each one having its own independent approval number.
These interface adapters, supplied by IBM, do not use or contain excessive
voltages. An excessive voltage is one that exceeds 42.4 V peak ac or 60 V dc.
They interface with the IBM 3746 Expansion Unit Model 900 and IBM 3746
Nways Multiprotocol Controller Model 950 using Safety Extra Low Voltages
(SELV) only. In order to maintain the separate (independent) approval of the
IBM adapters, it is essential that other optional cards, not supplied by IBM, do
not use mains voltages or any other excessive voltages. Seek advice from a
competent engineer before installing other adapters not supplied by IBM.
Service Inspection Procedures
The Service Inspection Procedures help service personnel check whether the
3745/3746 conforms to IBM safety criteria. They have to be used each time the
3745/3746 safety is suspected. The
Service Inspection Procedures section is
located at the beginning of the:
¹
3745 Communication Controller Models 210 to 61A Maintenance Information
Procedures, SY33-2054
¹
3745 Communication Controller Models 130 to 17A Maintenance Information
Procedures, SY33-2070
xvi
3745-XXA xvi 3746-9X0: 6563 SPIM