Knoll Systems LED1081 user manual Troubleshooting Tips, Symptom Possible Causes Solution

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5.2 Troubleshooting Tips

Table 5-1 provides some general guidelines for troubleshooting problems you may encounter with the LED1081. If the suggested solutions fail to resolve the problem or if you encounter an issue not described here, please contact Knoll Systems Technical Support.

Symptom

Possible Cause(s)

Solution

 

 

 

The projector does not turn on.

• The LED1081 is not plugged in or

• Ensure that the LED1081 is

 

the AC outlet is not active.

plugged in and that the AC outlet

 

 

is active.

 

 

 

The remote control does not work

• The batteries have run out.

• Replace the batteries.

correctly.

• IR code set mismatch between

• Press and hold the LIGHT and

 

remote control unit and projector.

ENTER remote control buttons si-

 

 

multaneously until the remote control

 

 

back-lighting “blinks” (approximately

 

 

five seconds). Then, try again.

 

 

 

The projector is on and OSD menus

• Incorrect source selection.

• Select the correct source.

appear, but there is no video image

• Source component is not turned on.

• Turn on the source.

on-screen.

• Source component is connected

• Check cable connection from

 

incorrectly or not at all.

source component to projector.

 

 

 

A projected image from a DVD is

• DVD player is connected to the

• Turn off progressive scan on the

split or otherwise scrambled.

Component input and set to pro-

DVD player.

 

gressive scan mode.

 

 

 

 

Image is blurred.

• The lens is not correctly focused.

• Adjust the focus with the remote control.

 

 

 

Image is too bright and/or lacks defini-

• Contrast is set too high.

• Lower the contrast setting.

tion in the bright areas of the image.

 

 

 

 

 

Image appears “washed out” and/or

• Brightness is set too high.

• Lower the brightness setting.

dark areas appear too bright.

 

 

 

 

 

Colors in the image are swapped;

• The Red/Pr, Green/Y or Blue/Pb

• Ensure that the source outputs are

for example, reds appear blue or

outputs from the source are con-

connected to the correct LED1081

vice versa.

nected to the wrong inputs on the

input.

 

LED1081.

 

 

 

 

 

Table 5-1: Troubleshooting Chart

 

56Maintenance and Troubleshooting

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Contents Projector Table of Contents Maintenance and Troubleshooting Copyright Information CopyrightDisclaimer About this manualImportant Safety Instructions FCC Part Introduction About This ManualTarget Audience Textual and Graphic ConventionsTurn to Using This ManualIf you need Description, Features and Benefits Key Features and BenefitsAdditional Features of the LED1081 Parts ListControls and Functions LED1081 at a GlanceLED1081 Top/ Rear/ Bottom View LED1081 I/O Panel ComponentLED10801 Key Pad SourceLED1081 Remote Control CONT, BRIGHT, SharpInstallation Remote ControlIR Reception Angles Installation Considerations Installation TypeAmbient Light Advantages ConsiderationsThrow Distance Estimated Throw DistanceFloor Installation Vertical and Horizontal PositionFolded Optics Other ConsiderationsLens Shift Vertical Lens Shift15H Adjusting the Projection Angle Mounting the LED1081Floor Mounting Upright Ceiling Mounting InvertedConnecting Source Components to the LED1081 Connections to the LED1081RGB Connections Component Video Connections 10 Composite and S-Video Connections RS-232 Controller Connection 11 RS-232 Control System ConnectionConnecting an External IR Receiver Connecting to AC PowerTurning on the Power Adjusting the Picture OrientationCeiling Mode Changing the OSD LanguageZoom Lens AdjustmentsFocus Vertical Lens Shift Horizontal Lens Shift Using the On-Screen Menus OperationSelecting an Aspect Ratio Selecting An Input SourceLED1081 OSD Menu Structure General PIP PIP Split Mode Memory Sub-Menu Image Aspect Ratio Settings Below Black Above Black 10 Typical Gray Bar Pattern for Adjusting Contrast 12 Typical Test Pattern for Adjusting Sharpness 13 Noise Reduction Sub-Menu 14 Overscan Examples 15 HSG Sub-Menu Advanced OperaTion 4 17 RGB Adjust Sub-Menu 18 Fine Sync Sub-Menu Setup Trigger commands are deactivated when a PIP source is active Info Cleaning the Air Vents TroubleshootingMaintenanceCleaning the Intake and Exhaust Vents Troubleshooting Tips Symptom Possible Causes SolutionSpecifications Serial Interface SpecificationsTransfer Specifications RS-232 Commands IR Codes and Keynames Remote Button DescriptionIR Codes and Keynames Function Command Action on unit Operation Command Values= RGB = PBP = LED Operations Commands Electrical LED1081 SpecificationsOptics Standard Accessories MechanicalLED1081 Dimensions Shows the LED1081 dimensions, in millimetersSupported Timings Sdtv Projection Distance and Screen Size Specifications Specifications Specifications
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