# US 2014/0152446 A1 · Electronic device and rack system having the same, and method for notifying abnormality

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- Number: US 2014/0152446 A1
- Document ID: US20140152446A1
- Status: Published application
- Kind: A1
- Application number: 14/177,473
- Filed: 2014-02-11
- Published: 2014-06-05
- Earliest claimed: 2009-03-31
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Kazuhiko Aruga; Eisuke Sato
- Web page: https://patentgrep.com/patent/US20140152446A1

## CPC

- H05K 7/20736: {within cabinets for removing heat from server blades}
- G08B 21/18: Status alarms (G08B21/02 takes precedence)
- H05K 7/20727: {within server blades for removing heat from heat source}
- H05K 7/20836: {Thermal management, e.g. server temperature control}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS

## Abstract

An electronic device including a fan unit capable of setting an air blowing direction toward any of an interface plate side of a casing and a back plate side opposite to the interface plate; a power supply unit; a first housing portion capable of housing the power supply unit and provided within the casing to be close to the back plate; a second housing portion capable of housing the power supply unit and provided within the casing to be close to the interface plate; a detection portion that detects the air blowing direction of the fan unit and a position where the power supply unit is housed; and a warning portion that operates based on the detection portion to give a warning in a case where the air blowing direction of the fan unit is different from the side where the casing houses the power supply unit.

## Claims

### Claim 1

A method for notifying abnormality in an electronic device comprising a casing and a fan unit installed in the casing, the method comprising:
detecting, in a case where a power supply unit that exhausts air through a first surface side of the casing is inserted into the casing from the first surface side through which the fan unit draws or exhausts air based on an air blowing direction that is set in the fan unit, that the air blowing direction is set so as to draw air; and
notifying abnormality by a lightning state of LEDs based on the detecting.

### Claim 2

A method for notifying abnormality in an electronic device comprising a casing and a fan unit installed in the casing, wherein
in a case where a power supply unit that exhausts air through a first surface side of the casing is inserted into the casing from the first surface side through which the fan unit draws or exhausts air based on an air blowing direction that is set in the fan unit, a lightning state of LEDs is changed to a different state based on whether the air blowing direction is set so as to draw or exhaust air.