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Knoll Systems Ht211 Projector User Manual

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    							Troubleshooting: Common Problems & Solutions 
     
    Problem Check These Items 
    Does not turn on Check that the cord is plugged in with power at that 
    outlet 
     
    Slide lamp cover off lens 
     
    Check the status light to see if the projector has 
    overheated or the lamp usage exceeds 1100 hours. 
    No picture Use remote buttons to select correct source (Video, 
    S-Video, or RGB).  
     
    Ensure your cables are connected properly.   
     
    Adjust the brightness and contrast. 
     
    Slide lamp cover off lens 
     
    Is the STATUS indicator blinking? 
    Image isn’t square to the screen Adjust keystone or projector angle to improve its 
    angle to the screen. 
    Picture is blurred Adjust the focus.  
     
    Reposition the projector to improve its angle to the 
    screen.  
     
    Ensure that the distance between the projector and 
    screen is within the adjustment range of the lens 
     
    Is lens dirty or have condensation on it? 
    Remote control does not work Install new batteries. Low batteries may be 
    insufficient to generate IR commands. 
     
    Make sure there are no obstacles between you and 
    the projector. 
     
    Stand within 13 feet (4m) of the projector.  
    The STATUS indicator is lit or blinking See the Status Light message chart on the next page. 
    Cross color in RGB mode If “Auto Picture” is off, turn it on.  If “Auto Picture” 
    is on, turn it off.Balance the image with the Picture 
    Adjustment icon and Fine Picture Adjustment icon 
     
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    							When the STATUS indicator on the projector keypad lights or blinks 
    Status Light Message 
     
    Condition Status 
    OFF Normal 
    On Continually The projector lamp has exceeded 1000 hours of 
    operation and should be replaced. 
    Blinking Very Rapidly (On and off in a 
    cycle of 1 sec.) 
    The lamp housing is not correctly installed.  Install it 
    correctly. 
    Blinking Rapidly 
    (On and off in a cycle of 4 sec.) 
    The temperature protector has been triggered.  If the 
    room temperature is high, move the projector to a 
    cool location. If the temperature within the projector 
    is high, check the cooling fan ventilation hole and the 
    ventilation hole on the bottom of the projector.  If any 
    holes are blocked, remove whatever is blocking them. 
     
    The temperature protector has been triggered.  If you 
    switch the main Power switch Off, then immediately 
    switch it On again; sometimes the power does not 
    come on.  If this happens, wait one minute, and then 
    switch the power On again. 
     
    The lamp lighting voltage error detection protector 
    has been triggered.  Wait at least one minute before 
    switching it on again.  If this does not solve the 
    problem, please contact your dealer. 
    Blinking Slowly (On and off in a cycle of 
    8 sec.) 
    The cooling fan has stopped.  Contact your Knoll 
    dealer for service. 
    Blinking Very Slowly (On and off in a 
    cycle of 12 sec.) 
    The lamp is not turned on. 
     
    The projector was turned off and back on too quickly.  
    Turn off the projector, wait one minute, then turn the 
    projector back on.  Or the lamp is burnt out. 
     
    Replacing the lamp housing 
    After the lamp has been operating for 1000 hours or longer, the STATUS indicator on the control 
    panel will light and “LAMP USAGE” icon, which shows hours of total lamp use, will be 
    displayed on the screen.  When this happen, turn off the unit and replace the lamp housing with 
    new one.  The unit will not be go on after 1100 hours.  (It will go off\
     if it is in use.) 
     
                                              
       ***CAUTION*** 
    • DO NOT TOUCH THE LAMP immediately after it has been used.  It will be 
    extremely hot.  Allow at least one hour for the lamp to cool before handling. 
    • DO NOT LOOSEN ANY SCREWS except for those mentioned in the instructions \
    below.  There is danger of electric shock. 
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    Lamp Replacement Procedure 
    1. Switch off the main power and unplug the power 
    cord.   
    2. Wait at least one hour for the lamp to cool. 
    3. Turn the unit upside down carefully. 
    4. Loosen the lamp cover securing screw. 
    5. Slide the lamp cover in the direction of the arrow 
    and remove it. 
     
    CAUTION: Do not use a lamp housing other 
    than the Knoll replacement lamp housing. Order 
    this from your Knoll dealer using your 
    projector’s model number (see “Note” below). 
    6. Loosen the three lamp housing securing screws.  
    (This projector has a safety switch.) 
    7. Hold the handle then pull the lamp housing 
    upward to remove it. 
    8. Install the new lamp housing. 
    9. Secure the lamp housing with the three screws. 
    10. Replace and secure the lamp cover with the 
    securing screw. 
    11. Return the unit to the normal position, connect 
    the  
           power cord, and turn on the unit. 
    12. Reset the lamp time. See “Resetting the lamp use 
    hours to zero”. 
     
    Note: 
    When the lamp usage time reaches 1100 hours, 
    it becomes impossible to switch on the power 
    and menus are not displayed.  In this case, press 
    the remote control POWER OFF button for at 
    least 10 seconds in the standby mode.  It is 
    possible to confirm whether it has been reset or 
    not by checking whether the STATUS indicator 
    is extinguished. 
    Obtain a replacement lamp from your dealer 
    where the projector was purchased.  When 
    ordering a replacement lamp, specify the 
    correct replacement lamp – Product code 28-
    631. 
    Knoll Systems  
    145 Tyee Drive Point Roberts, WA USA 98281 
    11791 Machrina Way, Richmond BC Canada  
    V7A 4V3 
     
    © Copyright 1999-2000 All Rights Reserved 
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