1.
Does the frame that cannot become powered on contain a 3490 or a 3590 Tape
Unit?
No
Yes
↓
Go to the service information for the specific tape unit to analyze the
problem.
This ends the procedure.
2.
Is the secondary frame a Stage 2 frame?
Note:
Stage 2 frames have a Rack Attention light on the frame control panel.
Rack Power Ready
Rack Attention
RV2A176-2
Yes
No
↓
Go to step 33 on page 49 of this procedure.
3.
Starting from J15 or J16 on the system unit, go to the first frame in the frame
interconnect cable sequence on which one of the following conditions is
present:
v
The Power Ready light is off.
v
The Power Ready light is blinking.
v
A frame-mounted unit displays a power reference code of 1xxx xx2E.
Is the Power Ready light blinking?
No
Yes
↓
A normal power-on sequence may be in process. If any Power Ready
light is blinking for more than 1 minute, exchange the power control
compartment (PCC) on the frame with the blinking light. See the
removal and installation procedures in this book or in the
Migrated
Expansion Tower Problem Analysis, Repair and Parts
, depending on the
secondary frame you are working on.
This ends the procedure.
4.
Is the Attention light on or blinking?
No
Yes
↓
Go to step 18 on page 45 of this procedure.
5.
Does a frame-mounted unit display a power reference code of 1xxx xx2E?
Power Problems
Chapter 1. Starting Problem Analysis
43
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