Motorola MVME956UM2, MVME956AC user manual Cooling Fan, Removal

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5

Removal and Replacement Procedures

Cooling Fan

To remove or replace one or more of the chassis cooling fans, follow these procedures.

Removal

1.Turn the power OFF to all equipment and disconnect the power cable from the AC power source.

2.Slide the MVME956AC chassis out from its rack mounting or remove the top panel and side panels of your lab benchtop unit.

3.Remove the front bezel.

Note: Refer to Figure 7-1 on page 7-5 and Table 7-2 on page 7-4 for parts identification and location.

4.At the left and right side of the chassis, remove the three screws along each side of the base which hold the hinged fan tray and air filter door in the chassis.

5.If the MVME956AC is not mounted in a rack, lay the unit on one side.

6.Remove the screws that keep the fan tray and air filter door secured.

7.Swing the fan tray and air filter door open.

8.Depending on the fan you are replacing, unplug the appropriate fan wire connector from its mating connector.

See the wiring diagram in Figure 7-3 on page 7-7.

9.Using a nut driver, remove the nuts and screws that secure the fan to the tray.

10.Remove the fan.

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Contents MVME956AC VME Chassis User’s Manual Restricted Rights Legend Preface Page Safety Summary Safety Depends On You Regulatory Notices Industry Canada Page Contents Support Information List of Figures List of Tables Overview FeaturesGeneral Description Chassis Description and Specifications MVME956AC Chassis Specifications Power Supply Description and SpecificationsPower Supply Limit Considerations VME Bus Backplane Description and SpecificationsSlot VME Bus Backplane Specifications Safety and Regulatory Compliance Operating Environment General PrecautionsChassis Cooling Considerations Hardware Preparation Items Hardware PreparationDocument Title Motorola Publication Number Related DocumentationBenchtop Operation Chassis Installation InstructionsInstall the Desktop Cover Kit Cover Kit Cover Kit Removal Rack Mounting OptionFCC, VDE Controls and Indicators Operating ProceduresPower Control Procedure Physical Description Backplane PowerVME64x Bus Interface Signal Termination Backplane Bus ConnectorsBackplane Preparation Slot Backplane Connectors and Headers Rear View Install the Daisy-Chain Jumpers Pin Assignments Power Monitor ConnectionLive Insertion Backplane Daisy-Chain Jumper Wiring Removal and Replacement Procedures Removal Power SupplyPower Supply Power Supply Removal/Replacement ReplacementPower Supply Disk and Tape Drive Disk/Tape Drive Removal Removal and Replacement Procedures VME64x Bus Backplane Backplane Mounting Card File Removed Replacement Cooling Fan Cooling Fan Removal/Replacement Optional Air Filter Kit Introduction Drawings/Wiring DiagramMVME956AC Chassis Parts List Parts ListsParts Lists Model Part Common Description Number Name MVME956AC-AC Major AssembliesMVME956AC Chassis Assembly, 1 MVME956AC Chassis Assembly, 2 MVME956AC Wiring Diagram Index IN-2

MVME956AC, MVME956UM2 specifications

The Motorola MVME956UM2 and MVME956AC are advanced embedded computing platforms designed for high-performance industrial and military applications. These ruggedized computing solutions cater to various sectors, including telecommunications, aerospace, and defense, providing a reliable foundation for real-time processing and data acquisition tasks.

One of the distinguishing features of the MVME956UM2 and MVME956AC is their robust architecture, based on the PowerPC processor. The MVME956UM2 generally offers a PowerPC 750 microprocessor, operating at clock speeds of up to 600 MHz, while the MVME956AC may leverage a higher performance variant for enhanced computing capabilities. This processor architecture enables efficient execution of complex applications and multi-threading operations, making it suitable for demanding environments.

Both models support advanced memory configurations, accommodating up to 512 MB of RAM and several megabytes of non-volatile flash memory. This flexibility allows developers to design applications with substantial data handling requirements, such as real-time analytics or extensive data logging.

Another notable aspect of the MVME956 series is its modular design, which facilitates easy integration with various I/O modules and communication interfaces. The board features multiple Ethernet ports supporting both 10/100Base-T and Gigabit Ethernet, enabling high-speed data transfer across networks. Additionally, with support for PCI, USB, and other serial communication standards, developers can create customized solutions tailored for specific application needs.

Durability is one of the key characteristics of the MVME956 models. They are built to withstand extreme environmental conditions, including a wide temperature range, vibration, and shock. This makes them ideal for use in aircraft, naval vessels, and other challenging settings where reliability is paramount.

The MVME956AC also offers enhanced graphics support, with the ability to drive advanced visual displays for monitoring and control tasks. This feature is particularly advantageous in situations where real-time visual feedback is critical, such as in control rooms or manned military operations.

In summary, the Motorola MVME956UM2 and MVME956AC represent powerful, versatile computing platforms tailored for demanding applications. With their advanced processing capabilities, expansive memory, rugged design, and extensive I/O options, these embedded systems are well-suited for a variety of industrial and defense environments, making them a preferred choice among engineering professionals.
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