IBM Power Systems S822LC Technical Overview And Introduction page 55

Packaging for service
The following service enhancements are included in the physical packaging of the systems to
facilitate service:
Color coding (touch points)
Terracotta-colored touch points indicate that a component (FRU or CRU) can be
concurrently maintained.
Blue-colored touch points delineate components that may not be concurrently maintained
(they might require that the system is turned off for removal or repair).
Positive retention
Positive retention mechanisms help ensure proper connections between hardware
components, such as from cables to connectors, and between two adapters that attach to
each other. Without positive retention, hardware components risk becoming loose during
shipping or installation, which prevents a good electrical connection. Positive retention
mechanisms such as latches, levers, thumb-screws, pop Nylatches (U-clips), and cables
are included to help prevent loose connections and aid in installing (seating) parts
correctly. These positive retention items do not require tools.
Service Indicator LEDs
The Service Indicator LED function is for scale-out systems, including Power Systems such
as the Power S812LC server, that can be repaired by clients. In the Service Indicator LED
implementation, when a fault condition is detected on the POWER8 processor-based system,
an amber FRU fault LED is illuminated (turned on solid), which is then rolled up to the system
fault LED.
When the ID LED button on the front panel is pressed, the blue LED on the front panel and
the blue ID LED on the rear panel light up. The technical personnel can easily locate the
system on the rack, disconnect cables from the system, and remove it from the rack for later
repair.
The Service Indicator operator panel contains the following items:
Power On LED (Green LED: Front)
– Off: Enclosure is off.
– On Solid: Enclosure is powered on.
– On Blink: Enclosure is in the standby-power state.
Enclosure Identify LED (Blue LED: Front)
– Off: Normal.
– On Solid: Identify state.
– On Blink: Reserved.
System Information/Attention LED (Amber LED: Front)
– Off: Normal.
– On Solid: System Attention State.
Enclosure Fault Roll-up LED (Amber LED: Front)
– Off: Normal.
– On Solid: Fault.
– Power On/Off Switch.
– Pin-hole Reset Switch.
– USB Port.
– Beeper.
– Altitude Sensor with Ambient Thermal Sensor.
– VPD Module.
Chapter 2. Management, Reliability, Availability, and Serviceability
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