DANGER
For -48V dc power supply, electrical current from power cables is hazardous.
To avoid a shock hazard:
• To connect or disconnect -48V dc power cables when you need to remove/replace install
redundancy power supply unit(s).
To Connect:
To Disconnect:
1. Turn OFF subject dc power source(s) and equipment
(s) that are attached to this product.
2. Install the power supply unit(s) into the system
housing.
3. Attach dc power cable(s) to the product.
• Ensure correct polarity of -48 V dc connections:
RTN is + and -48 V dc is -. Earth ground should
use a two-hole lug for safety.
4. Connect dc power cable(s) to subject power source
(s).
5. Turn ON all the power source(s).
1. Disconnect or turn off the subject dc power source(s)
(at the breaker panel) before removing the power
supply unit(s).
2. Remove the subject dc cable(s).
3. Unplug the subject power supply unit(s) from the
system housing.
S035
CAUTION:
Never remove the cover on a power supply or any part that has this label attached. Hazardous voltage,
current, and energy levels are present inside any component that has this label attached. There are no
serviceable parts inside these components. If you suspect a problem with one of these parts, contact
a service technician.
Attention:
Go over “Installation Guidelines” on page 107 to ensure that you work safely.
CAUTION:
• 240 V dc input (input range: 180-300 V dc) is supported in Chinese Mainland ONLY.
• Power supply with 240 V dc input cannot support hot-plugging power cord function. Before
removing the power supply with dc input, please turn off server or disconnect dc power sources at
the breaker panel or by turning off the power source. Then, remove the power cord.
Watch the procedure
. A video of this procedure is available from the following links:
•
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C6QgmsUMRG6ul0bHzrGmsG
•
https://list.youku.com/albumlist/show/id_54461099
Procedure
Step 1. Make preparations for this task.
a. If CMA has been installed, do the following:
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ThinkSystem SR850 V2 Maintenance Manual
Summary of Contents for 7D31
Page 1: ...ThinkSystem SR850 V2 Maintenance Manual Machine Types 7D31 and 7D32 ...
Page 8: ...vi ThinkSystem SR850 V2 Maintenance Manual ...
Page 52: ...44 ThinkSystem SR850 V2 Maintenance Manual ...
Page 60: ... Three backplanes on page 57 52 ThinkSystem SR850 V2 Maintenance Manual ...
Page 70: ...62 ThinkSystem SR850 V2 Maintenance Manual ...
Page 71: ...Chapter 3 Internal cable routing 63 ...
Page 78: ...70 ThinkSystem SR850 V2 Maintenance Manual ...
Page 114: ...106 ThinkSystem SR850 V2 Maintenance Manual ...
Page 236: ...Figure 133 System board and expansion board LEDs 228 ThinkSystem SR850 V2 Maintenance Manual ...
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