3Com 8912H, 8913H, 8916 Electrical power cord is not plugged, These has not been properly fixed

Page 62

Troubleshooting

Phenomena that may be easy to be mistaken for machine defects

About the phenomenon confused with a machine defect, check and cope with it according to the following table.

Phenomenon

Cases not involving a machine defect

Reference

page

 

 

 

 

 

 

The electrical power cord is not plugged in.

11

 

Correctly connect the power cord.

 

 

 

The main power source has been interrupted during

 

 

operation such as by a power outage (blackout), etc.

11, 14

 

Please disconnect the power plug from the power outlet,

Power does not

and allow the projector to cool down at least 10 minutes,

 

then turn the power on again.

 

come on.

 

 

Either there is no lamp and/or lamp cover, or either

 

 

 

 

of these has not been properly fixed.

 

 

Please turn the power off and disconnect the power plug from

54, 55

 

the power outlet, and allow the projector to cool down at least

 

45 minutes. After the projector has sufficiently cooled down,

 

 

please make confirmation of the attachment state of the lamp

 

 

and lamp cover, and then turn the power on again.

 

 

The signal cables are not correctly connected.

9

 

Correctly connect the connection cables.

 

 

 

Signal source does not correctly work.

–

 

Correctly set up the signal source device by referring to the

Neither sounds

manual of the source device.

 

The input changeover settings are mismatched.

 

nor pictures are

15, 16

outputted.

Select the input signal, and correct the settings.

 

 

The BLANK function for pictures and the MUTE

 

 

function for sounds are working.

15, 20

 

AV Mute may be active. Refer to the item “Sound does not

 

come out” and “No pictures are displayed” on the next page

 

 

to turn off the MUTE and BLANK functions.

 

(Continued on next page)

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Contents Trademark acknowledgment About this manualThank you for purchasing this projector Contents Contents of package Fastening the lens coverHOT Part namesProjector Control port USB port Control panelRear panel &9 Cb/Pb, Cr/Pr ports Video port Audio IN3 L,R ports 11 13 10Remote control On a horizontal surface Suspended from the ceiling Setting upArrangement 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 barPutting batteries Remote controlAbout the remote control signal 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 off the power Power on/offTurning on 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 signalFocus ring Adjusting the projectors elevatorAdjusting the zoom and focus  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 TempSAVE-1, SAVE-2, SAVE-3, SAVE-4 LOAD-1, LOAD-2, LOAD-3, LOAD-4MY Memory Image menu For a computer signalFor no signal Over ScanImage menu PhaseAuto Adjust SizeVideo NR Input menuProgressive Color SpaceFrame Lock Input menuVideo Format Resolution For some pictures, this function may not work wellSetup menu Monitor OUT Setup menuStandby Mode Speaker VolumeAudio menu AudioBlank Using the /// buttons adjusts the menu positionScreen menu MyScreen Screen menuStart UP MyScreen Lock Capturing error has occurred. Please try againMyScreen registration is finished MessageSource Name TemplateAuto on Option menuAuto Search Lamp Time Option menuAuto OFF MY Source ServiceMY Button 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 CodeTurning On the Transition Detector Function Using the Transition Detector FunctionSetting the Transition Detector Password Setting the Transition Detector off Displaying the MY Text Using the MY Text Password functionWriting 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 916100 112 Unit mm Specifications270

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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