3Com 8912H, 8913H, 8916, 8755H user manual Other care, Inside of the projector, Caring for the lens

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Turn the projector off, and unplug the power cord. Allow the projector to cool sufficiently.
Turn the projector off, and unplug the power cord. Allow the projector to cool sufficiently.

Maintenance

Other care

Inside of the projector

In order to ensure the safe use of your projector, please have it cleaned and inspected by your dealer about once every year.

Caring for the lens

If the lens is flawed, soiled or fogged, it could cause deterioration of display quality. Please take care of the lens, being cautious of handling.

1.

2. After making sure that the projector is cool adequately, lightly wipe the lens with a commercially available lens-cleaning wipe. Do not touch the lens directly with your hand.

Caring for the cabinet and remote control

Incorrect care could have adverse influence such as discoloration, peeling paint, etc.

1.

2. After making sure that the projector is cool adequately, lightly wipe with gauze or a soft cloth.

If the projector is extremely dirty, dip soft cloth in water or a neutral cleaner diluted in water, and wipe lightly after wringing well. Then, wipe lightly with a soft, dry cloth.

WARNING ►Before caring, make sure the power cord is not plugged in, and then allow the projector to cool sufficiently. The care in a high temperature state of the projector could cause a burn and/or malfunction to the projector.

►Never try to care for the inside of the projector personally. Doing is so dangerous.

►Avoid wetting the projector or inserting liquids in the projector. It could result in a fire, an electric shock, and/or malfunction to the projector.

•Do not put anything containing water, cleaners or chemicals near the projector.

•Do not use aerosols or sprays.

CAUTION ►Please take right care of the projector according to the following. Incorrect care could cause not only an injury but adverse influence such as discoloration, peeling paint, etc.

►Do not use cleaners or chemicals other than those specified in this manual. ►Do not polish or wipe with hard objects.

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Contents Thank you for purchasing this projector About this manualTrademark acknowledgment Contents Contents of package Fastening the lens coverProjector Part namesHOT Control port USB port Control panelRear panel &9 Cb/Pb, Cr/Pr ports Video port Audio IN3 L,R ports 11 13 10Remote control Arrangement Setting upOn a horizontal surface Suspended from the ceiling Arrangement VCR/DVD Connecting your devicesMonitor PlayerConnecting your devices About Plug-and-Play capabilityAC inlet Power cord Connecting power supplyUsing the security bar and slot Anti-theft chain or wire Security slot Security barAbout the remote control signal Remote controlPutting batteries Mouse right button Press Reset button Changing the frequency of remote control signalUsing as a simple PC mouse & keyboard Mouse left button Press Enter buttonTurning on the power Power on/offTurning off the power Press Mute button on the remote control Adjusting the volumeSelecting an input signal Operating For a computer signal Searching an input signalSelecting an input signal  For no signalAdjusting the zoom and focus Adjusting the projectors elevatorFocus ring  For a video signal and s-video signal Using the automatic adjustment featureAdjusting the position  For a component video signalUsing the magnify feature Correcting the keystone distortionsFreeze button Freezing the screenTemporarily blanking the screen Blank buttonEasy Menu Using the menu functionESC button Reset button Menu buttonAdvanced Menu Using the menu functionAdvanced Menu Auto Picture ModeAspect KeystoneEasy Menu Picture menu GammaPicture menu Color TempMY Memory LOAD-1, LOAD-2, LOAD-3, LOAD-4SAVE-1, SAVE-2, SAVE-3, SAVE-4 Image menu For a computer signalFor no signal Over ScanImage menu PhaseAuto Adjust SizeVideo NR Input menuProgressive Color SpaceVideo Format Input menuFrame Lock Resolution For some pictures, this function may not work wellSetup menu Standby Mode Setup menuMonitor OUT Speaker VolumeAudio menu AudioScreen menu Using the /// buttons adjusts the menu positionBlank Start UP Screen menuMyScreen MyScreen Lock Capturing error has occurred. Please try againMyScreen registration is finished MessageSource Name TemplateAuto Search Option menuAuto on Auto OFF Option menuLamp Time MY Button ServiceMY Source Ghost Filter MessageRemote Freq Factory ResetKEY Lock InformationChanging the Password Using Security FeaturesInputting the Password SecurityTurning on the MyScreen Password Function Using the MyScreen Password FunctionIf you have forgotten your Password Setting the PasswordDescription Security Using the PIN Lock FunctionTurning the Password off Registering the PIN CodeTurning Off the PIN Lock Function If you have forgotten your PIN CodeSetting the Transition Detector Password Using the Transition Detector FunctionTurning On the Transition Detector Function Setting the Transition Detector off Writing the MY Text Using the MY Text Password functionDisplaying the MY Text Description Turning on the MY Text Password Mode Closed Caption menuDisplay ChannelType number 456-8755H Replacing the lamp MaintenanceReplacing the lamp Lamp coverLamp warning Replacing the lampCleaning and replacing the air filter Type number MU05611Cleaning and replacing the air filter Inside of the projector Caring for the cabinet and remote controlOther care Caring for the lensTroubleshooting Related messagesRegarding the indicator lamps Resetting all settings Shutting the projector downSignal source does not correctly work Electrical power cord is not pluggedSignal cables are not correctly connected Input changeover settings are mismatchedMute function is working Volume is adjusted to an extremely low levelAUDIO/SPEAKER setting is not correct Lens cover is attachedNot properly adjusted Color settings are not correctly adjustedColor Space setting is not suitable Whisper function is working913H SpecificationsSpecifications 916270 Specifications100 112 Unit mm

8755H, 8916, 8913H, 8912H specifications

3Com has long been known for its innovative networking solutions, and the 3Com 8912H, 8913H, 8916, and 8755H are prime examples of the company's commitment to high performance and versatility in networking technology. Each of these switches is engineered to meet the demanding requirements of modern network environments, providing robust functionalities designed for enterprise use.

The 3Com 8912H is a high-performance switch that offers 12 ports, allowing for efficient connectivity in medium-sized networks. One of its standout features is its support for Quality of Service (QoS), which prioritizes data traffic to enhance voice and video applications, ensuring minimal latency and jitter. Additionally, it includes advanced Layer 2 switching capabilities, enabling the management of bandwidth and improving network efficiency. Its ability to handle packet filtering and VLAN support allows for the segmentation of network traffic, enhancing both security and performance.

The 3Com 8913H extends the capabilities of the 8912H with 24 ports, making it ideal for growing organizations that require scalable networking solutions. Built with high availability in mind, the 8913H includes redundancy features that minimize downtime. It also supports Power over Ethernet (PoE), enabling the delivery of power to connected devices like IP phones and wireless access points directly through the network cable. This feature not only simplifies the installation of these devices but also enhances network management.

The 3Com 8916 is a more robust model, providing 16 ports and advanced Layer 2 and Layer 3 features. Its intelligent networking capabilities, such as static routing and dynamic management features, make it a suitable choice for larger networks. The switch supports stacking capabilities, allowing multiple units to operate as a single logical unit. This capability enhances management simplicity and scalability while providing redundancy and load balancing for even greater reliability.

Lastly, the 8755H switch stands out due to its ability to deliver high bandwidth and performance for large data center environments. It features a modular design, enabling the deployment of various interface modules to support different network requirements. This flexibility, combined with extensive manageability options, allows the 8755H to adapt to evolving network needs. Its robust security features safeguard the network against unauthorized access and attacks, making it a core component in secure enterprise architectures.

In summary, the 3Com 8912H, 8913H, 8916, and 8755H switches embody a comprehensive suite of networking features designed for efficiency, scalability, and security. They showcase 3Com's commitment to providing high-quality, reliable networking solutions that meet the diverse needs of businesses in an ever-evolving digital landscape.
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