JVC rs-840UD owner manual Troubleshooting, Fine Tune menu

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Troubleshooting

No image is displayed

Is the power cord connected?

Is the power indicator light on?

Power is on, power indicator is blue but the screen appears extremely dark.

Is the power indicator amber?

Does the ‘NO SIGNAL’ message appear?

See if the power cord is properly connected to the outlet.

See if the power switch is turned on.

Adjust brightness and contrast again.

Backlight may need repair.

If the display is in power saving mode, move the mouse or press any key.

Turn both devices off and then back on.

The signal cable between PC and display is not connected. Check the signal cable.

Press INPUT on the remote control to check the input signal.

The screen image looks abnormal

Is the screen positioned?

Do thin lines appear in the background?

Power is on, power indicator is blue but the screen appears extremely dark.

D-SUB analog signal –Select Auto Adjustment in Size & Position menu to automatically select the optimal screen status that fits the current mode.

D-SUB analog signal –Select Auto Adjustment in Size & Position menu to automatically select the optimal screen status that fits the current mode. If the adjustment is not satisfactory, use the

Fine Tune menu.

D-SUB analog signal ––Select Auto Adjustment in Size & Position menu to automatically select the optimal screen status that fits the current mode. If the adjustment is not satisfactory, use the

Fine Tune menu.

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Contents 4K Ultra HD LCD Display Electrical Power Related Precautions Important PrecautionsDo not put heavy objects on the display or sit upon it Precautions in Installing the DisplayPrecautions in Using/Cleaning the Display Precautions in Moving the DisplayOn Disposal Only, Hg lamp used Display Precautions for Image StickingIncluded Accessories AccessoriesFront View Name and Function of the PartsRear View ConnectorVideo Input Ports a DVD player Line OutUSB Ports Rear View continueOut Installing Batteries into the Remote Control Using the Remote ControlName of the Remote Control Buttons Installing the Stand Stand InstallationRemoving the Stand Handle Mounting on a WallVesa Fdmi Wall Mounting Recommended Connection, Resolution & Picture Mode Connecting to External DevicesConnecting with a D-subVGA Signal Input Cable Connecting with an Hdmi Signal Input CableHDMI-UHD60 Connection 3840 x 2160 @60Hz PC ConnectionComposite Video Connection Audio Out ConnectionComponent Connection Ethernet Connection Power ConnectionUSB Connection OSD Menus Screen Adjustment Options using the Control PanelMenu Options SetupPicture AudioOperation using the remote control Adjusting On-Screen Display OSD SettingsInput Menu Picture Menu Picture Menu continue OSD Menus OSD Menus Picture Settings ResetAudio Menu Audio Menu continue Reset AudioMenu Option Description CEI Settings Configure CEI settings Setup MenuPower Indicator Wired ControlInformation Setup Menu continueMenu Option Description Set ID Select OK to reset all settings IP Address / Subnet Mask / Def. Gateway / Pref. DNS Ethernet MenuWide Menu Sleep Timer Multimedia Menu Multimedia ModeMultimedia support format Container Extensions Audio/Video CodecBasic Operation Playback Music Button to stop the playback Watching VideosViewing Photos Set Aspect Ratio Changing Display ModeFine Tune menu TroubleshootingPress MENU. Select Setup Reset All Settings Display-Settings-Color Table menuLCD Panel SpecificationsHdmi Preset Mode PC Mode RGB Preset ModeComposite Mode Preset Mode Component Mode Preset ModeRS-232C Configurations Connecting the cableDaisy Chain Connection Communication ParameterHdmi CEI statement Hdmi CEI ConnectionRS-232C and RJ-45 Protocol Controlling the Multiple ProductMultimedia Ack Set VGA 0xCC 0x55 0x20 0xE0 OK Prefix code Set Payload Command 0x55 0x37 0x55 0x3E 0xE0 OK Prefix code Set Payload Command Data #0 Data #1 Data #2 Ack Set Color 0xCC 0x55 0x48 0xE0 OK Ack Read 0xCC 0x55 0x4E 0xE0 OK A10 A11 A12 A13 RS232C CheckSum Model