Hitachi 32PD7800 Owners Guide - Page 51

ENGLISH TROUBLESHOOTING (continued) Symptoms That Seemingly Appear to be Failures (continued) Symptom Point to check See page • There are locations on the screen that are different from • High-precision technology is used to manufacture the plasma the periphery (*). display panel, However in some cases, there are minor defects in *Points that do not light, points with brightness different some parts of the screen. Please note that this is not a - from that of the periphery, points with color different from malfunction. that of the periphery, etc. • Vertical stripes appear, depending on the screen contents. • The plasma display panel is lighting the phosphors by the discharge of internal radiation. Depending on the screen contents, in rare cases this may cause vertical stripes to appear - because of failure to light. Please note that this is not a malfunction. • Coarse horizontal stripes appear in FULL display. • Adjusting the Clock Phase will reduce the horizontal stripes. (RGB input) 37 • Flickering in the form of horizontal lines oscillating up and • If the direct frequency from the computer is below 85Hz, try a down. higher frequency (upper limit 85Hz). There may be a slight (PC INPUT MODE only) attenuation of the current image. 38 • Try turning the Vertical Filter On. For this case however, the vertical resolution will drop. • The top of the monitor heats up. • When used for long periods of time, the top of the monitor may heat up. This is not a malfunction. - • Text characters are displayed with varying thicknesses. • The thicknesses of characters and lines may vary if images with a vertical resolution greater than 512 lines are displayed; - however, this is not a malfunction. • The screen becomes dark and the images cannnot be seen • This sometimes occurs when a component output VTR such as the during VTR special playback (fast forward, rewind) 480i is connected. This is not a malfunction; therefore, please take note that this may - occer. When it does occur, change to composite output,or S.video output. • During multi picture mode, sub pictures are not displayed. • Sub pictures image might not be able to be displayed, depending on the combination. 28 (Reter to the table of "2 picture mode" and "4 picture mode") • The screen display sizes are not switched. • The screen dicplay size is fixed at "Full" as receiving 1080i/60Hz, 1080i/50Hz, and 720p. - • Images from AV6 (HDMI) are not displayed. • Check the cable and output format of connecting device. (Reter to "Connecting to an Audio Visual Device") 14 • Images from Photo Input are not displayed. • Check the connecting device and image format. 30 (Reter to "Photo Input Display") 31 32 51