IBM 7133 Series, Руководство по обслуживанию

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| Example 4
| This link is between a disk drive module and an SSA adapter. It has five parts.
B a c k p la n e
S ig n a l C a r d
o r
B y p a s s C a r d
D is k
D r i v e
A d a p t e r
C able
7133
| Example 5
| This link is between two SSA adapters. It has five parts. Note that it has fiber optic
| cables and Fibre-Optic Extenders instead of normal SSA cables.
F ib e r O p tic C a b le s
A d a p t e r A d a p t e r
F i b r e -
O ptic
E x te n d e r
F i b r e -
O ptic
E x te n d e r
|
Link Status (Ready) Lights
| If a fault occurs that prevents the operation of a particular link, the link status lights of the
| various parts of the complete link show that the error has occurred.
| You can find the failing link by looking for the flashing green status light at each end of the
| affected link. Some configurations have other indicators along the link (for example, on
| bypass cards or Fibre-Optic Extenders) to help with FRU isolation.
| The meanings of the lights are summarized here. If you need more information about the
| lights, see:
| “Lights and Power Switch” on page 1-3 for disk drive lights and bypass card lights of
| the 7133
| The SSA Adapters: User’s Guide and Maintenance Information manual for the lights of
| the SSA adapter.
|
Summary of Disk Drive and Adapter Lights
| Link Status (Ready) Light
|
Status of Light
|
Meaning
|
Off
|
Both SSA links are inactive. For more information, see “Disk Drive Module
|
Lights” on page 1-8.
|
Permanently on
|
Both SSA links are active.
|
Slow flash
|
(two seconds on,
|
two seconds off)
|
Only one SSA link is active.
Chapter 2. Problem Determination Procedures
2-13