IBM 7133 D40, Service Manual

Page: 34 / 306

2
Check light: This amber light shows the following conditions:
Status of Light Meaning
Off Normal operating condition.
Permanently on One of the following conditions exists:
v
An unrecoverable error that prevents the normal operation of the
SSA link has been detected.
v
The power-on self-tests (POSTs) are running or have failed. The
light comes on as soon as the disk drive module is switched on,
and goes off when the POSTs are complete. If the light remains
on for longer than one minute after the disk drive module is
switched on, the POSTs have failed.
v
Neither SSA link is active.
v
The disk drive module is in Service mode, and can be removed
from the 7133.
Flashing The Check light has been set by a service aid to identify the
position of this particular disk drive module.
Other 7133 Settings
The 7133 Models D40 and T40 have other settings that you can change by way of the
service functions:
v
Enclosure ID. (You can also use the ID push buttons to change the ID; see “ID push
buttons” on page 11.)
v
Bypass card modes.
v
Temperature warnings (low and high).
v
Exchanged / swap flags.
For more details, see “Service Functions” on page 62.
16
7133 Models D40 and T40 Service Guide