Western Digital WD20000H1NC User Manual - Page 16

LED Indicators (Lights), Power/Activity LED Behavior, Power On Sequence, Normal Operation

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MY BOOK WORLD EDITION USER MANUAL LED Indicators (Lights) The Power/Activity and Capacity Gauge indicators are represented by a single bar of six LEDs (lights) on the front panel of the drive. Power/Activity LED Behavior Power On Sequence Appearance Bottom LED dimmed LEDs light up in sequence from bottom to top Drive State Powering up Transitioning to drive ready Normal Operation Appearance Capacity Gauge, steady illumination (see below) Moving up and down Slow flashing (every four seconds) Drive State Power-on state, ready for use Drive in use System standby Capacity Gauge When the device is turned on, the Capacity Gauge indicates space used on the drive by fully illuminating six sections in an upward vertical direction. Each section represents approximately 17 percent of drive capacity. Because this drive is preformatted, the first section is illuminated upon installation. Power Down Sequence Appearance Dimming up/dimming down in an odd/even alternating pattern Drive State Drive powering down Device Events Appearance Bottom LED dimmed, top LED flashing Fast flashing (every half second) Continuous "center out" sweep pattern Drive State Boot unsuccessful My Book system event, action required (see "System Events" on page 177) Unit failure OVERVIEW - 10

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OVERVIEW - 10
MY BOOK WORLD EDITION
USER MANUAL
LED Indicators (Lights)
The Power/Activity and Capacity Gauge indicators are represented by a single bar of
six LEDs (lights) on the front panel of the drive.
Power/Activity LED Behavior
Power On Sequence
Normal Operation
Capacity Gauge
When the device is turned on, the Capacity Gauge indicates space used on the drive
by fully illuminating six sections in an upward vertical direction. Each section
represents approximately 17 percent of drive capacity. Because this drive is
preformatted, the first section is illuminated upon installation.
Power Down Sequence
Device Events
Appearance
Drive State
Bottom LED dimmed
Powering up
LEDs light up in sequence from bottom to top
Transitioning to drive ready
Appearance
Drive State
Capacity Gauge, steady illumination (see below)
Power-on state, ready for use
Moving up and down
Drive in use
Slow flashing (every four seconds)
System standby
Appearance
Drive State
Dimming up/dimming down in an odd/even alternating
pattern
Drive powering down
Appearance
Drive State
Bottom LED dimmed, top LED flashing
Boot unsuccessful
Fast flashing (every half second)
My Book system event, action required
(see “System Events” on page 177)
Continuous “center out” sweep pattern
Unit failure