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MAP 2022: 7133 Models D40 and T40 – Power-On
This MAP helps you to isolate FRUs that are causing a power problem on a 7133
Model D40 or Model T40.
Attention: Unless the using system needs to be switched off for some other reason, do
not switch off the using system when servicing the 7133 or an SSA link. Power cables
and external SSA cables that connect the 7133 to the using system can be
disconnected while that system is running.
Step 1. (from MAP 2010: 7133 Models D40 and T40 – START step 1; and from MAP
2020: 7133 Models D40 and T40 – Power step 5)
a. Remove all power from the 7133 (see "All Power" on page 145).
Note: Ensure that you switch off both power supply assemblies.
b. Remove both power supply assemblies (see "Power Supply Assemblies"
on page 162).
c. Remove the three fan assemblies (see "Fan Assemblies" on page 173).
d. Disconnect all the disk drive modules from the backplanes. To do this,
open the handle on each disk drive module (see "Disk Drive Modules and
Dummy Disk Drive Modules" on page 150).
e. Remove the controller card assembly (see"Controller Card Assembly" on
page 199).
f. Remove the four bypass cards (see "Bypass (SNBC) Cards" on page 201).
g. Go to step 2 on page 100.
Chapter 2. Problem Determination Procedures
99
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