Operator Panel Lights and Controls
To identify the lights and ID display that are described here, see Figures 3 and 4.
Power switch
3
:
v
On Model D40, this switch controls the internal dc power that is supplied to the 7133
by its power supply assemblies.
To switch off the dc power, press and release the Power switch.
When the dc power is switched off, the 7133 is in Standby mode. If the 7133 remains
connected to the mainline-power source while in Standby mode, mainline power is
still present in the power supply assemblies.
To switch on the dc power, press and release the Power switch.
Note: The action of connecting the 7133 to the power source automatically switches
on the dc voltage.
v
On Model T40, this switch controls the mainline power into the 7133.
To switch off the mainline power, press and release the Power switch.
Note: The 7133 Power light and the 7133 Check light might go off, come on, and go
off for up to 20 seconds while the power goes down. You can safely remove
and replace FRUs during this time.
When the mainline power is switched off, no mainline power is present in the power
supply assemblies.
To switch on the mainline power, press and release the Power switch.
7133 Power light
1
: This green light is on continuously when the Power switch has
been pressed to switch on the 7133, and dc voltage is present in the 7133. The light
flashes when the 7133 is in Standby mode.
Note: On Model D40, Standby mode can be set by the 7133 Power switch, or by the
Remote Power On feature (if present). On Model T40, Standby mode can be set
only by the Remote Power On feature (if present).
7133 Check light
2
: This amber light comes on continuously if a failure occurs in the
7133. The 7133 might be able to continue operating satisfactorily although the failure of
a particular part has been detected. The light flashes when a service aid identifies a
disk drive module.
ID display
6
: This four-character alphanumeric display shows the location and ID of
the 7133. For example, on a rack-mounted 7133 Model D40, you can use two digits to
show the ID of the rack, and two digits to show the ID of the 7133, while on a 7133
Model T40, you can use all four digits to show the ID of the 7133. You can set the ID
display to represent whatever you require. The resulting ID must, however, be unique.
8
7133 Models D40 and T40 Service Guide
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