IBM SAN Volume Controller 2145-CG8, Hardware Maintenance Manual

Page: 337 / 372

Attention: Check to make sure that the SAN Volume Controller that is powered by this 2145 UPS-1U is
shut down and turned off, prior to step 1. See MAP 5350 in the IBM System Storage SAN Volume Controller
Troubleshooting Guide .
1.
At the front of the 2145 UPS-1U, press and hold the on/off button (
1
in Figure 308) until the
power light is extinguished (approximately five seconds). On some versions of the 2145 UPS-1U, you
need a pointed device, such as a screwdriver, to press the on/off button. The 2145 UPS-1U enters
standby mode.
2.
At the back of the 2145 UPS-1U, remove the power cable retainer before disconnecting the SAN
Volume Controller power cable from load segment receptacle 2 (
3
in Figure 309).
3. Disconnect the signal cable from the communication port (
2
in Figure 309).
4. Disconnect the main power cable from the main power source (
1
in Figure 309).
Some SAN Volume Controller node types have two power supply units. Both power supplies must
be connected to the same 2145 UPS-1U. The SAN Volume Controller 2145-CF8 is an example of a
node that has two power supplies. The SAN Volume Controller 2145-8A4 is an example of a node
that has a single power supply.
5. Remove the 2145 UPS-1U front panel, as shown in Figure 310 on page 308.
Note: If you are having difficulty pulling the right side of the panel free from the 2145 UPS-1U,
insert a flat-blade screwdriver between the right side of the cover and the frame and gently pry it
free.
+ -
LOAD 1 LOAD 2
svc00003
1
Figure 308. The 2145 UPS-1U front-panel assembly
1yz09b
1
2
3
Figure 309. 2145 UPS-1U (rear view)
Chapter 2. Removing and replacing parts
307