JVC DLA-M4000LU DLA-M4000LU User instruction manual (1.1MB) - Page 62

Troubleshooting (Cont.) Symptom Probable cause During video replay, video image sometimes is disturbed • have Installation adjustment been performed? Image color is poor or • Is picture quality (color desity, etc.) image is disturbed adjusted correctly? Corrective action • For installation, consult the dealer where you purchased the projector or a local service center. • Adjust picture quality on the menu. • Is the correct broadcast system (color • Set the broadcast system (color system) selected? system) to AUTO. Page ---- 38, 40 34 • Are signals (scanning frequency, etc.) to connected devices appropriate? • Check if the signal is appropriate (scanning frequency, etc.), and input the appropriate signal. • Is the source setting correctly selected? • Set the source setting to AUTO. If the Isn't a wrong source (forced mode) problem still persists, set it to the selected? correct dedicated source (forced mode). Specific colors fail to be displayed • Are specifications of the signal being • Check specifications of both signal input matching those of the video input being input and video input card. card? • Is the input cable connected correctly? • Check cable connections. The upper part of the video image bows or distorts. • Has the lamp's life come to its end? • While computer system signal is input, isn't a sync signal for composite sync (Cs) or G on sync being input? • Check the used lamp hours on the menu, and if the lamp life is near its end, consult the dealer where you purchased the projector or a local service center. • Input separate sync signals for vertical sync (V) and horizontal sync (H) signals. • Isn't signal with much jitter or skew • Input signals with little jitter or distortion being input to a video deck? distortion. 19 44 ~ 46 ---- 21 60 10 ---- • Is the source setting correctly selected? • Set the source setting to AUTO. If the Isn't a wrong source (forced mode) problem still persists, set it to the selected? correct dedicated source (forced mode). 44 ~ 46 • Have the channel's setup contents been changed? • Check the setup contents been changed. 47 ~ 51 The projection • Have the channel's setup contents position on the screen been changed? has shifted. • Is sync signal being input correctly? • Check the setup contents of the channel and correct them if necessary. • Check sync signal and related connection. • Has the projector been moved from its • Check the installed position. installed place? Video image suddenly • Aren't video turned off by pressing the • Press the remote control's AV HIDE go out. remote control's AV HIDE button? button to turn video on. • Are all color video signals being input? • Check signals and connections. 47 ~ 51 10 ---- 12 19 ~ 23 62