Table of Contents
Advertisement
3. Rotate the PSU latch upward until it is flush against the PSU face, ensuring that the connector on the PSU
engages the connector inside the chassis.
4. Turn the thumbscrew located at the top of the power supply latch clockwise, until it is finger-tight, to
secure the latch to the power supply unit within the enclosure.
5. If replacing two power supply modules, repeat
Connecting a power cable
This section addresses power cable connection for
enclosures configured with AC power supply modules.
Connecting an AC power cord
1. Install the power cord:
a. Connect the female plug to the AC PSU cord inlet.
b. Connect the male plug to the rack power source.
Verify connection of the primary power cord(s) from the
rack to separate external power sources.
2. Power-on the newly-installed PSU:
• Connecting the power cord effectively powers a
switchless AC PSU on. Wait several seconds for the
disks to spin up if replacing both PSUs.
3. If replacing two power supply modules, repeat
and
step
2.
Verifying component operation
Examine PSU module status as indicated in the table below.
Table 23 Power supply unit LED descriptions
LED No./Description
1 — Input Source Power Good
2 — Voltage/Fan Fault/
Service Required
LEDs for a PSU are located in the top right corner of the module face, as shown in
The top LED corresponds to LED number (1) above, and the bottom LED corresponds to number (2) above.
If the Voltage/Fan Fault/Service Required LED is illuminated amber, the PSU module has not gone online,
and likely failed its self-test. Remove and reinstall the PSU module. In addition to viewing the PSU LEDs,
verify that the cooling fans are spinning. Also see
illuminated green, indicating that the module has completed initializing, and is online.
alternative to physically observing LEDs to verify component operation.
Replacing a Storage Enclosure chassis
IMPORTANT: A Storage Enclosure chassis is a Field Replaceable Unit (FRU) rather than a CRU. FRUs must
be installed only by trained service technicians. For additional information, contact support.lenovo.com.
The Storage Enclosure chassis replacement procedure replaces a damaged chassis FRU, which consists of
the structural support metal, the exterior sheet metal housing, and the assembled/installed midplane. The
procedure includes removing all CRU components from a damaged chassis and installing them into a
52
step 1
through
step 1
Color
State
Definition
Green
On
Power is on and input voltage is normal.
Off
Power is off, or input voltage is below the minimum
threshold.
Amber
On
Output voltage is out of range, or a fan is operating
below the minimum required RPM.
Off
Output voltage is normal.
Verify that the CRU OK LED on each ESM face plate is
step
4.
Figure 36
on page 56 as an
Power supply
module
Rack power
source
on page 51.
Advertisement
Table of Contents
