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8: Troubleshooting
8.1 Projector Does Not Turn On ........................................................................................................8-1
8.2 Lamp Does Not Ignite..................................................................................................................8-1
8.3 Lamp Suddenly Turns Off ...........................................................................................................8-2
8.4 Flicker, Shadows, Or Dimness.....................................................................................................8-2
8.5 LampLOC™ Not Working .........................................................................................................8-2
8.6 LiteLOC™ Not Working .............................................................................................................8-2
8.7 Touch Panel Controller (TPC) .....................................................................................................8-3
8.8 Trouble Establishing Communication with Projector..................................................................8-3
8.9 Blank Screen, No Display of Image ............................................................................................8-3
8.10 Image Appears Vertically Stretched or 'Squeezed' into Center of Screen................................8-3
8.11 Inaccurate Display Colors..........................................................................................................8-3
8.12 Display is Not Rectangular .......................................................................................................8-3
8.13 Display is Noisy........................................................................................................................8-4
8.14 Display has Suddenly Frozen.....................................................................................................8-4
8.15 Data is Cropped from Edges ......................................................................................................8-4
8.16 The Projector is ON, but There is No Image ............................................................................8-4
8.17 The Display is Jittery or Unstable..............................................................................................8-4
8.18 The Display is Faint ...................................................................................................................8-4
8.19 Portions of the Display are Cut OFF or Warped to the Opposite Edge....................................8-5
8.20 Display Appears Compressed (Vertically Stretched) ...............................................................8-5
8.21 Inconsistent Picture Quality......................................................................................................8-5
A: Specifications
A.1 Display ........................................................................................................................................A-1
A.1.1 Panel Resolution and Refresh Rate .....................................................................................A-1
A.1.2 Achievable Brightness (Measured at Screen Center)..........................................................A-1
A.1.3 Achievable Contrast Ratio ..................................................................................................A-1
A.1.4 Color and Gray Scale ..........................................................................................................A-1
A.1.5 White Point..........................................................................................................................A-1
A.1.6 Gamma ................................................................................................................................A-1
A.2 Source Signal Compatibility .......................................................................................................A-1
A.3 Control Signal Compatibility ......................................................................................................A-4
A.3.1 Ethernet Port........................................................................................................................A-4
A.3.2 RS232-PIB3G .....................................................................................................................A-4
A.3.3 RS232-ICP ..........................................................................................................................A-4
A.3.4 GPIO Port............................................................................................................................A-4
A.3.5 Simple Contact Closure Interface (SCCI) Port ...................................................................A-5
A.4 Touch Panel Controller ...............................................................................................................A-5
A.5 Power Requirements ...................................................................................................................A-6
A.5.1 AC Input..............................................................................................................................A-6
A.5.2 UPS AC Input .....................................................................................................................A-6
A.6 Lamp ...........................................................................................................................................A-6
A.7 Physical Specifications ...............................................................................................................A-7
A.8 Regulatory...................................................................................................................................A-7
iv
D4K25 User Manual
020-100882-02 Rev. 1 (07-2012)
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