Sim2 Multimedia Projector Ht500 Link User Manual
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19 Picture ContrastColourTintShar pn e ss F i lte r C i ne ma Mode V i de o Type 50505032OffN orm a lAuto Au toV CR1V C R 2N oise R e duc tion B r ightness 60 The various menus only offer the relevant adjustments in ac- cordance with the type of input signal displayed (e.g. certain typical adjustments for video signals, not necessary for graphic signals, do not appear on the menus, and vice versa). Some adjustments (e.g. BRIGHTNESS and CONTRAST) are asso- ciated with a numerical value that can be varied within the set limits using the keys fl / ‡. For others (e.g. VIDEO TYPE) you can choose among three options presented on the same fl / ‡). Other adjustments (marked by the < symbol) provide subme - nus, which appear as a superimposed window in which the selection is made with the · and ‚ keys (Fig. 20). Fig. 19 MAIN MENU Colour Tempe ratureGamma Corre ction P o s itionOv e rs c a n Y/C D e lay A spec t Image 1 N orma l A namorphicLetterb ox P a noram ic P i xel to p ixe lUs er 1Us er 2Us er 3 Fig. 20b Colour Tempe ratureGamma Corre ction P o s ition Y/ C D e la y1 Ov e rs c a n1 A spe c t Image Fig. 20a To access the main menu of the On Screen Display press the MENU key on the keypad or the MENU+ or MENU- key on the remote control. T h e m a i n m e n u i s d i v i d e d i n t o f o u r w i n d o w s , P I C T U R E , IMAGE, SETUP and MENU, in which the various adjustments are grouped according to the frequency of use. Use · and ‚ to select the line corresponding to the adjustment you wish to make (Fig. 19). These submenus are accessed by pressing the � key, while exit and return to the upper level occurs by pressing MENU+/-. Press ESC on the remote control or keypad to interrupt the menu display or wait for it to disappear automatically after the number of seconds set on the SETUP page. PICTURE This menu features the adjustments related to picture quality. Adjustments that are not available for a given input do not appear on the menu. Table 4 summarises the adjustments avai - lable for each input. For a complete overview of the on-screen menus, consult the ON SCREEN MENU LAYOUT in the ADDITIONAL INFORMATION section. BRIGHTNESS Use this control to adjust the image’s black level without affecting white areas. Increasing the value will give more detail in darker parts of the picture. For correct adjustment it may pro - ve useful to display the signal relative to the grey scale within which the black level and the level immediately above it must be separately identifiable. Alternatively use a scene composed of black objects alongside other dark coloured objects. CONTRAST Use this control to adjust the image’s black level without affec- ting white areas. To ensure correct adjustment, it may prove useful to display the signal relative to the grey scale, within which the white level and the level immediately below it must be separately identifiable. Alternatively use a scene composed of well-lit white objects surrounded by light coloured objects with lower level lighting. COLOR This control (also called Saturation) increases or decreases
20 the picture colour intensity. When set to zero, colour images will be shown in black and white. Increasing the value, try to find the point at which the colours look natural: suitable referen - ces include skin tones and grass in landscape shots. TINT Controls the purity of the colours. Basically determines the red-green ratio of the picture. Reducing the value will boost the red contents of the pictu - re, increasing the value will boost the green tones. For this adjustment use skin tones or a test pattern image with colour bars as a reference. SHARPNESS Use this adjustment to increase and decrease the level of picture detail. When the sharpness value is reduced the image details appear less pronounced, while increasing the value raises image definition, making the outline of objects sharper. Note that an excessively high value may result in a ‘noisy’ picture and the edges of objects may be unnaturally defined. SHARPNESS MODE This allows you to select the type of processing associated with sharpness adjustment. In the case of a progressive or in - terlaced video signal VIDEO mode is advisable; with PC graphic signals use GRAPHIC MODE. FILTER This allows you to select the mode in which the input signal is processed. Selecting the most appropriate value for a given input signal ensures the best horizontal and vertical definition and makes the picture sharper. CINEMA MODE In AUTO the deinterlacer recognises if the video signal source is a movie film (obtained from a Telecine device with 3:2 or 2:2 pull-down) and applies a deinterlace algorithm optimised for this type of signal. If the video signal source is not identified as a film, or if you select NO the deinterlacer applies a Motion compensated al- gorithm optimised for video camera signals. VIDEO TYPE Activates a filter to improve stability of pictures from video re- corders or DVD players. To toggle between NORMAL , VCR1 mode and VCR2 mode press on the remote control. NOISE REDUCTION This adjustments allows to choose the filter value for noise reduction purposes. As soon as this option is selected on the menu, the image is divided in two parts. In the left side the image is not altered by the filter, in the right part the filter is activated. This allows you to compare the effect of the filter. It is possible to deactivated the filter ( NOT ACTIVE), to use the automatic adjustments ( AUTO) or to manually select (MANUAL) the value suitable for the image with the VALUE adjustment. In case of using the VALUE adjustement, it is enoght to select to cursor below and set the value with the fl / ‡ keys of the remote control. Associated to the NOISE REDUCTION there is the possibility to use the specific function (FLESH TONE CORRECTION) to make skin tone more natural. Often the use of noise reduction filter slightly degrades the image in those areas where skin tones are visible. With the use of this function it is possible to maintain an excellent image quality throughout the entire projected image. Table 4 Brightness Contr a st V ide o S- V ide o RG B S Y C rCb RG B G r a fico D V I-D H D MI ™ RG B S 15k H z Y C rCb 15k H z Adjustments In puts Co lour -- - - - - - - - - - - - - -Tint S h a r pness S h a r pness Mode F i lter Present only if the Vide o Stand a rd is N T SC Cine ma Mode V i de o T y pe N o ise re d uction F lesh tone c orre c tion - - - - - - - - - - - - -
21 IMAGE This menu features adjustments relating to picture position, aspect ratio, etc. ASPECT This adjustment allows you to change the dimensions and aspect ratio (relationship between width and height) of the displayed image. There are five preset aspects available and three personalised aspects (with user-settable parameters). You can select a different aspect for each source: the selected aspect ratio will be automatically called the next time the relative source is called. You can also select the required aspect ratio by repeatedly pressing the key, or by pressing and a numerical key (1...8). The following aspects are available. NORMAL: projects the image occupying the full height of the screen while maintaining the aspect ratio of the input signal. When the input signal aspect ratio is 4:3 black vertical bands are displayed on the right and left of the picture. ANAMORPHIC: allows a 16:9 picture to be displayed correctly. LETTERBOX: serves to display 4:3 letterbox image (with source signal having black bands above and below the picture) so that it fills the 16:9 screen and maintains the correct aspect ratio. PANORAMIC: this aspect stretches the 4:3 image, slightly crop- ping the upper and lower parts. Panoramic is ideal for displaying a 4:3 image on the 16:9 screen of the Display. PIXEL TO PIXEL: this aspect displays the image as it is input without adapting it to the screen. The image is projected in the centre of the screen and if its ho - rizontal and/or vertical dimensions are smaller than the display, it is bounded by vertical and/or horizontal black bands. USER 1, 2, 3: When none of the preset formulas are suitable, the User formulas are available, with the facility for continuous horizontal and vertical adjustment of picture size. SCREEN CONTROL If an appropriate screen-masking interface is connected to the 12V output socket it is possible, for each aspect chosen, to re- frame the screen to a variety of aspect ratios and screen sizes (please refer to the screen manufacturer’s manual). COLOR TEMPERATURE Changes the colour balance of the image. Colours can be adjusted towards the red end of the spectrum (low colour temperature values - expressed in degrees Kelvin) or the blue end (high values). Colour temperature can be selected with three preset values: HIGH (corresponding to approx. 9000 degrees Kelvin), MEDIUM (approx. 8000 degrees Kelvin), LOW (approx. 6500 degrees Kelvin) and one PERSONAL setting controlled by the user with separate adjustments for RED, GREEN and BLUE. In the personale color adjustment for all three colors it is pos - sible to set an Offset value and Gain. The Offset adjustments have an impact of the low IRE values, while the Gain adjustments impact of the higher IRE values. Generally, the HIGH value is more suitable for displaying graphic images, MEDIUM and LOW for video images. These adjustments are reserved for expert users since there is a risk of obtaining results that impair projected image quality. GAMMA CORRECTION Determines the system’s response to the grey scale, emphasi- sing or attenuating the different grades of brightness (blacks, dark, medium, light grey, whites) in the projected image. There are 6 types of gamma curves FILM,FILM1,VIDEO, VI - DEO1, GRAPHIC and USER. Whit USER curve the the user may select the exponent (gamma value) used for gamma compensation. Values between 1.5 to 2.2 enhance the details in the dark image content, resulting in a lower contrast perception. Values higher than 2.2 , occurs a fade away of details in the dark image content, resulting in a higher contrast perception. With the value equal to 2.2 (the standard value) , the image’s colours displayed are the most natural colours available with the common video sources. OVERSCAN Remove noise around image. Some sources can produce a picture with noise along edges, thanks to the overscan function it is possible to drop such imperfections outside the projected area. The overscan value can be included between 0 (no over - scan) and 32 (maximum value). The image maintains in any case the aspect.
22 POSITION Use this adjustment to position the image vertically and ho- rizontally. Determines the aspect ratio of the projected image. These parameters do not normally require adjustment because the system checks the input signal and automatically sets the most suitable values. However, if the image is not perfectly centralised it may prove useful to request the system to repeat the input signal analysis and image positioning, calling the automatic control procedure from the AUTO button on the remote control or keypad. When this procedure is called it is helpful to have a white or light coloured background on the screen in the current picture. FREQUENCY/PHASE These adjustments, available for progressive signals and for signals from PC, ensure correspondence between the number of pixels making up the signal and the number of pixels making up the projected image. These parameters do not normally require adjustment because the system checks the input signal and automatically sets the most suitable values. However, if the image appears disturbed (loss of position within the equidistant vertical bands or instability and lack of shar - pness on the narrow vertical lines) it may help to prompt the system to repeat the input signal analysis and determination of the best parameters by calling the automatic adjustment procedure with the AUTO key on the remote control or on the keypad. If the automatic procedure fails to have the required effect, enter the frequency and phase values manually and approach the screen sufficiently to observe the effects of the adjustments. Y / C DELAY In the case of Video and S-Video signals, it may be necessary to correct horizontal colour misalignment within the projected image. For a given video standard (e.g. PAL or NTSC) the stored value does not normally require further fine-tuning, unless the source or connection cable has changed. Table 5 SETUP The setup menu contains less frequently used adjustments that may be required during installation (e.g. On Screen Display language selection or the display of Test Patterns). ORIENTATION Select the option that best describes the installation i.e. desktop front, ceiling front, desktop rear and ceiling rear. 123-CLASS 1 LASER PRODUCT500 LINK Fig. 21 Position A s pect V i de o S- V ideo RGB S YCrCb RGB G raf ic o RGB S 15kHz YCrCb 15kHz Adjustments In p uts F r e q ue n c y- - P h a se G a mm a C o rr ection C o lour Temper a ture Y / C D e la y - - - - - - - - Ov e rs c a n - D V I- D H D MI ™
23 HORIZONTAL/VERTICAL KEYSTONE To obtain maximum quality of the projected image, we recom- mend the installation of the projector on a level platform parallel and central to the screen. Adjust the feet underneath to obtain a level position, lining up the base of the projected image to the base of the projection screen (Fig. 22). 123-CLASS 1 LASER PRODUCT50 0 L INK Fig. 22 If the projected images needs to be centred, the LENS SHIFT (see next paragraph) adjustment allows the projected image to be moved vertically and horizontally, in relation to the centre of the screen (Fig. 23). 123-CLASS 1 LASER PRODUCT500 LINK 123-CLASS 1 LASER PRODUCT500 LINK Fig. 23 In the event you are unable to centre the image within the screen area, tilt the projector until the image is correctly positioned. Any keystone error can be removed by the Keystone adjustment in the Set up menu. The keystone adjustement helps to compensate possible ho - rizontal tilts of the projector. LENS The ZOOM adjustment impacts on the motorized zoom lens allowing to increase or decrease the dimension of the projected image. The FOCUS adjustment impacts on the motorized lens focus, allowing to obtain the highest definition on the projected image, an accurate focus setting should allow the viewer to di - stinguish each pixel that create the image one from another. If the video signal used is not suitable for this purpose, the HT 500 LINK system provide two test pattern , each available with the ajustment mentioned above, in order to select the appropriate value for ZOOM and FOCUS. This test pattern is displayed by pressing the • key, once the right adjustments are reached using the fl and ‡ keys, the test image can be easly removed pressing again the • key of the remote control. The LENS SHIFT adjustment allows to move horizontally (keys fl and ‡) and vertically (keys · and ‚) the lens, in order to center the image. FOCUS FOCUS FOCUS ?? ? ZOOM FOCUS 123-CLASS 1 LASER PRODUCT5 00 L I NK ZOOM ZOOM ZOOM ZOOM Fig. 24 In the initial phase of installation the configurable keys (F1, F2) serve as optical zoom and optical focus (Fig.24). LAMP POWER If your room is especially dark, the images from the system HT500LINK could result execessively bright. In order to enjoy wonderful images, the ECOMODE function activation allows to re du ce the power used to feed the lamp. In this way, the bright - ness of the image will be adapted to your projection conditions and a grater life lamp will be guaranteed. POWER ON If active (AUTO) allows to power up the system directly from the power feeder, once the initializing phase is completed.
24 2 VIDEO 3 S- VIDEO 9 GRAPH ICS RG B 10 11 5 C O MP ON ENT / RGB S 6 C O MP ON ENT / RGB S C O MPO NE NT / RGB S 7 C O MPO NE NT / RGB S 8 C O MPO NE NT / RGB S 1 VIDEO 1234 S- VIDEO 45678910GRAPH I C S RGB11DVI -D VIDEO 2 S- VIDEO 3 GRAPH RGB 9 GRAPH RGB 10 DVI - D 11 C O MP RGB 5 C O MP RGB 6 C O MP RGB 6 C O MP RGB 7 C O MP RGB 8 VIDEO 1 S-VIDEO 4 12 12H DMI H DMI 12 Source list/Edit sou rce name ACTIVE N A ME YesN o The inputs with an active video signal (visible in the input se- lection menu) are marked with a check symbol. It can be also helpful to identify the input with a name chosen by the user (for example with the name of the connected source) rather than with the signal type. Once chosen to have the input visible, in the drop menu, by selecting the Name option it is possible to rename the source in use. This will make it easier to remember the source connected to a specific input. You can use up to 12 alphanumeric letters to name the source (for more details check the “Insert text” section) Insert text You will be able to insert text easily and rapidly by accessing the text insertion menu (fig. 26) Cancel C o nfirm Edit s o u rce nam e ()?@1 AB C2 D E F3 GHI4 JKL5MNO6 PQRS7- + TUV8 0 WXYZ9 _ _ _ _ _ _ _ _ _ _ _ Fig.26 The text insertion mode remains the same if text is being inser - ted for the first time or if a previously inserted name is being edited. The letter insertion can be done in any available position (represented by horizontal lines). If not active (STAND-BY) once the initializing phase is completed the system remains in a stand-by mode waiting to receive the power on command from the remote control or the key pad. TEST PATTERNS Displays a series of five test patterns, useful for the installation of the projector. Press · and ‚ keys to browse pattern. FACTORY DEFAULTS Reconfigures the projector to original factory settings except Position, Orientation, Y/C Delay, Zoom and Focus. No C o nfirm? Ye s MENU LANGUAGE Lists the languages available for the On Screen Display me- nus. SOURCE LIST In order for the HT500LINK system to be more flexible, the fol- lowing described functions allow to modify the input selection menu making it more user friendly. The main window shows all the inputs available on the DigiOp - tic™ Image Processor. If one or more inputs are not utilized, it is often helpful to blank them from the input list (accessed with the 0 key). Once the input has been chosen, in the drop menu that appears by pressing the fl key, it is possible to activate the source (Fig. 25). The exclusion or activation of the source will automatically renumber the remaining active inputs.
25 Use the fl and ‡ keys to move between letters either left or right respectively. Press the numeric key matching the letter (Fig. 26), the first click of the key selects the first letter, the second click the second letter and so on. The available letters are shown in the text insertion menu. Once one letter has been inserted, to insert the following one it is necessary to move with the cursor in the next right position with the ‡ key of the remote control, repeat this procedure to insert other letters. Use the · key to switch from small case to capital letters and viceversa. Any mistake can be deleted with the ‚ key once it has been positioned on the wrong letter. Once the text insertion process is finished, it can be confirmed and saved by clicking the MENU+ key. If you want to delete the modifications use the MENU- key of the remote control. F1/F2 KEYS This allows to assign different functions to the remote control keys, named F1 and F2. The window is made of 6 options, once for each line and by two columns showing the F1-F2 keys. The choice between F1 and F2 is made by the fl and ‡ keys of the remote control; the function given to F1 and F2 is chosen with the ‚ and · keys. The function delivered by the key is memorized by the inter - section on the line and column. In the following window are described the 6 options Source listF1/F2 keysSource info O S D Backgrou ng O S D Position O S D T imeout L a ngua g e Menu E nglish Z oomFocusMagnification B l a nkColour te mperature G amma correction F1 F2 Fig.27 ZoomAllows to access the optic zoom, where the � and � keys allow to increase or decrease the size of the projected image. Focus Once selected, the fl and ‡ keys allow to focus the image. MagnificationAllows you to select the area to be viewed and then magnify the projected image. The degree of enlargement is selected in Zoom mode (identified by a magnifying glass in the centre of the image) using the fl and ‡ keys. The area of the picture to be enlarged is selected in Pan mode (symbol in the centre of the picture) using the fl,‡, ‚ and · arrow keys. You can toggle between Zoom and Pan mode by pressing the F1/F2 key on the remote control. Blank Blanks the active video signal producing a completely black screen. Once pressed the key an indication of a few seconds on the OSD will confirm its activation. A click of any other key of the remote control allows to restore the previous settings. Color temperature The following click of the key (F1 or F2) allows to choose between the different color temperatures available. HIGH, MID, LOW, USER. Gamma correction The following click of the key (F1 or F2) allows to choose between the different gamma curves available. SOURCE INFORMATION When active (YES) each source change will show the information related to the signal. If not active (NO) there will be no information on the selected source. OSD BACKGROUND Determines the type of background for the On Screen Di- splay. OSD TIMEOUT Use this adjustment to set the display time after which the On Screen Display will disappear. OSD POSITION Allows the On Screen Display to be positioned in a particular area of the projected image. The OSD can be positioned using the arrow keys for fine adjustments or keys 1...9 on the remote control to select one of 9 preset positions.
26 MEMORIES The main parameters of the image may be saved in distinct groups of values (known as ‘Memories’); these parameters can subsequently be applied all together by way of a single command. There are 3 distinct Memories (Memory 1, Memory 2, Memory 3) for each of the 25 signal types managed: making a total of 75 different available Memories. The image parameters that can be saved/recalled by the Mem - ories management system are the following: Image Picture BRIGHTNESS ASPECT CONTRAST COLOR TEMP. GAIN (R/G/B) COLOR COLOR TEMP. GAIN OFFSET (R/G/B) TINT COLOR TEMP. SHARPNESS OVERSCAN FILTER GAMMA SHARPNESS MODE VIDEO TYPE Setup NOISE REDUCTION LAMP POWER Some of these parameters may not be available for certain inputs or certain input signals, as indicated in Tables 4 and 5. The menu page for the Memories management functions is activated by pressing the key on the remote control or the fl key on the keypad (Fig.28). 123- CLASS 1 LASER PRODUCT 5 0 0 L I NKRCI 2005 LIG H T ����� Fig.28 The operations that can be performed on each memory se - lected are described here below. Save a memory To save the current values of the image parameters in Memory 1, use the · and ‚ keys to move to line ‘1’ and then open the pull-down menu by pressing the fl key (Fig.29). Then select the option ‘Save current settings’. To confirm that the operation has been completed successfully, the message Current settings saved in Memory 1 is displayed at the bottom of the screen and the letter ‘S’ appears to the left of the memory name. The same procedure is used to save parameters in Memories 2 and 3. 0 A uto 3 S MEMORI A 1 Memories S a ve curren t settings S a ve initia l se ttingsRena me 2 I 1 S Fig.29 Recall a memory To recall a Memory, select the desired line and press ‡. The parameters saved in the selected Memory will be applied to the image displayed and a message will appear to confirm the operation Memory 1 recalled. The Memory recalled will be 5 COMP/RGB(YCrCb 15KHz) 5 COMP/RGB(RGB 15KHz) 6 COMP/RGB(YCrCb 15KHz) 6 COMP/RGB(RGB 15KHz) 5 COMP/RGB(YCrCb 32 KHz) 5 COMP/RGB(RGB 32KHz) 6 COMP/RGB(YCrCb) 6 COMP/RGB(RGB) 7 COMP/RGB(YCrCb 15KHz) 7 COMP/RGB(RGB 15KHz) 8 COMP/RGB(YCrCb 15KHz) 8 COMP/RGB(RGB 15KHz) 7 COMP/RGB(YCrCb) 7 COMP/RGB(RGB) 8 COMP/RGB(YCrCb) 8 COMP/RGB(RGB) 9 GR A PH I C S RGB 11 DVI- D (RGB) 12 H D M I 1 V ID E O 2 V IDEO 10 GR A PH I C S RGB 11 DVI- D (YCrCb) 3 S -V IDEO 4 S -V IDEO
27 associated with the source and signal type, and will be auto- matically recalled every time that particular source and signal type combination is selected. Save default settings To restore the original values to a previously modified Memory, select the line corresponding to the Memory in question and open the pull-down menu ( fl key). Then select the line Initial settings saved in Memory 1 . To confirm that the operation has been completed successfully, the message Memory 1 initialised is displayed at the bottom of the screen and the letter ‘I’ appears to the left of the name of the memory. Rename a memory It is possible to assign a name to each Memory. To assign a name (with a maximum length of 12 alphanumeric characters) to a Memory, select the option ‘Rename’ from the corresponding pull-down menu. Enter the text following the procedure indi - cated in paragraph SOURCE LIST. Restore Current Settings On entering the MEMORIES menu, a copy of the current settings is saved in a temporary menu (labelled with 0 - AUTO). Once one or more memories have been recalled, you can restore the settings that were effective at the moment the Memories menu was accessed by selecting 0 - AUTO. However, this operation must be completed before the MEMORIES menu page disap- pears (30 seconds after the last operation commanded from the remote control or the keypad). The next time it appears, the temporary memory will contain new information that takes into account any Memories selected the penultimate time the ‘Memories’ page was accessed. Memory 0 ( - AUTO) can be used even when you do not wish to enable the Memories management function for the signal currently in use. Once Memory 0 has been selected, when a source is chosen, the settings that were effective at the time the Memory was previously recalled will be automatically applied. INFO Displays the current status of the projector and information concerning the projected video/graphic signal. This function is displayed on pressing on the remote control (or, in the absence of the On Screen Display, the � key on the remote control). QUICK MENUS The quick menus provide access to the main adjustments that affect image quality, without calling the main On Screen menus. BRIGHTNESS , CONTRAST, COLOUR, TINT, SHARPNESS and FILTER adju- stments appear at the bottom of the screen one after the other when the · and keys are pressed ‚. MESSAGES The following messages may appear during operation of the system: No signal The system does not recognise any signal applied to the se - lected input. In this case: • Make sure the selected input is connected to a video or graphic signal and that that source is functioning cor - rectly. • Check the condition of the cables used to connect the sy- stem to the various sources. • Make sure the video or graphic signals supplied by the sour- ce are compatible with the system’s technical specifications and, in particular, with those of the selected input. Out of Range This message appears when either the resolution or the vertical/ horizontal frequency of the input signal exceeds system speci - fications (e.g. a QXGA graphic signal) or when an input is sup - plied with an incompatible signal (after setting the components input to YCrCb 15kHz a progressive signal is connected). Substitution lamp If the lamp hours exceed the 90% of the life lamp, at every switching on , a brief message appears on the screen to re - member the need of replacing it in a short time. If the lamp life is greater than 100% the message above persists until the ESC key is pressed.
28 10 TROUBLESHOOTING GUIDE No power (Green and red LED are OFF) • Check the power switch at the rear: it must be in position I. • Check if the power cable has been connected correctly to a working socket. • Check the power socket fuse, at the rear of the projector. • Replace the fuse on the mains socket with an identical type (T 5A H) (Fig. 2). • Should the problem persist, seek authorised technical assi- stance. The lamp is not coming on • Allow a few minutes pause between switching off and turning on again (from stand-by). This will allow the lamp to cool down sufficiently. • If the lamp doesn’t come on – even though the projector has had sufficient time to cool down – seek technical assistance from your nearest Dealer. No image • Check that the selected input is actually connected to a active video or graphic signal. • Check that the above source actually works. • Verify compatibility of video/graphic signals with the technical specifications of the projector. • Check the integrity of cables used to connect various sour- ces. • Check the cooling air inlets or air outlets on the units are not obstructed and the room temperature is below 35°C (95°F). Image is disturbed, unstable or noisy • Verify compatibility of video/graphic signals with the technical specifications of the projector. • Check the integrity of cables connecting projector to various sources. • If the signal source is a terrestrial broadcast (via a VCR) check that the receiving channel has been correctly tuned in and that the aerial system is in good working order. • Should the problem be present with a signal coming from a video-recorder, ensure that the videotape is an Original “first generation” copy and in good condition. • Adjust the VCR’s tracking control for optimum picture per- formance. Ensure the VCR mode is active in the Picture menu. Incomplete image along borders (vertical and ho - rizontal) • Compare compatibility of video/graphic signals and technical specifications of your projector. 9 CLEANING AND MAINTENANCE The Projector and DigiOptic™ Image Processor do not require internal cleaning. There are no user serviceable parts inside the projector. Please refer all service requirements to qualified personnel. Cleaning the projector’s cover: Use a soft slightly damp cloth. Do not use abrasive cleaners, solvents or other harsh chemicals, as this will damage the finish of the cover. Avoid direct cleaning of the rear panel’s screen-printing. Cleaning the lens: The lens may be cleaned with a very soft, non-abrasive small brush, in order to remove dust particles. Alternatively, use a soft dry cleaning cloth (of the type used for camera lens cleaning) to remove fingerprints and grease marks.