IBM 7133 D40, Service Manual

Page: 143 / 306

Step 13. (from step 3)
v
If the optical extender is plugged into an SSA attachment, observe the
green light (if present) that is next to the connector on the attachment.
v
If the optical extender is not plugged into an SSA attachment, or is plugged
into an SSA attachment that has no green light, observe the Ready light of
the first disk drive module on the string to which the optical extender is
connected.
Is the Ready light on continuously?
NO Go to step 15 on page 126.
YES Go to step 14.
Step 14. (from step 13)
The device is receiving SSA signals correctly.
Have you checked both ends of the optical link?
NO
a. Find the optical extender that is at the other end of the link.
b. Go to step 2 on page 111.
YES No trouble found with this link.
Chapter 2. Problem Determination Procedures
125