Toshiba TDP-T90 User Manual - Page 22

Before calling service personnel If you think something is wrong, check the followings before contacting customer service. Please see "Trouble indications" p.41 as well. If This Happens Check No power • Is the power cord plugged in? Is it connected to the projector? • Is the lamp cover loose? p.39 Power goes out • Is the ambient temperature high? p.41 during use • Is the air intake or air exhaust blocked? p.41 No picture • Is the projector turned on? p.24 • Is the mute function on? p.28 • Is the brightness setting minimized? p.30 • Are the connections set up correctly? p.21 • Are all the connected devices functioning properly? No audio • Is the projector turned on? p.24 • Is the mute function on? p.28 • Is the volume setting minimized? p.25 • Are the connections set up correctly? p.21 • Are all the connected devices functioning properly? Picture not displayed correctly • Is the input signal supported by the projector? p.45 , p.46 • Is there something generating an abnormal video signal, for instance the video tape? Picture blurred Part of picture out of focus • Is the lens dirty? p.40 • Is the lens focus adjusted optimally? p.25 • Is the projection distance within the projector's supported range? p.20 • Is the projector's screen placement angle tilted too far? p.20 • Are the sharpness or sampling phase adjustments off? p.27 p.30 Image is dark • Are the brightness or contrast adjustments off? p.30 • Is the lamp nearing the end of its service life? p.33 Colors too light Bad shading • Are the color, tint, R-level, G-level, or B-level adjustments off? p.30 • Is the screen dirty? • Is the lamp nearing the end of its service life? p.33 Remote control doesn't work • Are the remote control's batteries drained? • Are the batteries inserted into the remote control correctly? p.19 • Is the remote control being used within the effective range? p.19 • Are there any obstructions between the remote control and projector? • Are there any fluorescent or other bright lights shining at the projector's infrared remote sensor? 42 If This Happens TDP-T91 The images from the document camera are blurry TDP-T91 The images from the document camera are flickering Check • Is the document imaging camera's lens dirty? • Is the document imaging camera out of focus? p.36 • Is the location of the object being focused too dark? • Is there impact from the room's fluorescent lighting? Turn off the fluorescent lights, or change the shutter speed settings. p.30 43 Others