Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse or Fusible Resistor in this TV receiver is blown, replace it with the specified. General Servicing Precautions 1. Always unplug the receiver AC power cord from the AC power source before; a.
Removing or reinstalling any component, circuit board module or any other receiver assembly. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.
Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM, FETVOM, etc equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc". Samsung Syncmaster T mp utan lekapcsol. Sziasztok, van egy Samsung Syncmaster T monitorom. Bekapcsolas utan mp-ig van kep, utana a monitor lekapcsol. Ahogy lattam, ebben 6 lampa van, egy nagy csatlakozoval, es kulon egy kis csatlakozoval. Ha lehuzom a kulonallo lampakat, kep csak kb 1mp-ig van, nagyon hamar lekapcsol a monitor. Ebbol arra kovetkeztetek, hogy a lampak eloregedtek, tul keves a fogyasztasuk, es a vedelem lekapcsolja a monitort.
Lampacseren kivul letezik erre megoldas? Mondjuk egy parhuzamos ellenallas beiktatasa? Samsung N hiba. Procedure 1 Turn off the projector and disconnect the AC plug.
Allow the projector to cool at least for 45 minutes. Note: - Do not reset the Lamp Replace Counter, except after lamp is replaced. The message Lamp replace counter reset?
Please refer to the owners manual for further informa- tion. Recommendation Should the air filter become clogged with dust particles, it will reduce the cooling fans effectiveness and may result in internal heat build up and short lamp life. We recommend cleaning the air filter after the projection lamp is replaced. Refer to Air Filter Cleaning.
This is to indicate that lamp replacement is required. Service Parts No. If not, the filter would be broken. Mechanical Disassemblies Mechanical disassemble should be made following procedures in numerical order. Following steps show the basic procedures, therefore unnecessary step may be ignored.
Caution: The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of performance and product safety. Mechanical Disassemblies Fig. Lamp Holder removal 1 1 Remove 3 screws to take the Projection Lens ass'y off. So, it cannot be removed separately. Polarized Glass-In removal 3 1 Remove 6 screws to take the Optical unit top off. These LCD panels are installed with precision at the factory. If you find the color shading, please adjust the white uniformity by using the proper computer and Color Shading Correction software supplied separately.
Note: Do not replace the LCD panel separately otherwise it can not obtain proper picture. Do not touch the prism, the LCD panel and the electrode of flexible cable. Repeat steps 1 to 3 for remaining polarized glasses. Contrast adjustment Optical Adjustments Fig. Note: The relay lens adjustment must be carried out after completing this adjustment.
The service menu appears on the screen as follows. To adjust service data Select the adjustment item no. Refer to the Service Adjustment Data Table for further description of adjustment item no.
If replaced, it should be performed the re-adjustments following to the Electrical Adjustments. The data of lamp replacement monitor timer is stored in the IC Please note that the lamp replace counter is reset when the memory IC IC is replaced. Lamp replace counter can not be set to the previous value. Caution to memory IC replacement When IC is replaced with new one, the CPU writes down the default data of the service adjustments to the replaced IC, refer to the service adjustment table.
As these data are not the same data as factory shipped data, it should be required to perform the re- adjustments following to the Electrical Adjustments. Please note that in this case the lamp replace counter will be reset. Caution of Main Board replacement in the case IC is not defective When the main board is replaced, IC should be replaced with the one on previous main board.
After replacement, it should be required to perform the re- adjustments following to the Electrical Adjustments. In this case, the lamp replace counter can be kept the value as before. Input Mode Version No. Note : This part of dis- play is available at the service mode No. Enter the service mode. Select item no.
Do not attempt to adjust the follow- ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of per- formance and product safety. Receive the step gray scale composite video sig- nal with Video [Video] mode. Project only red light component to the screen. Project only green light component to the screen.
Project only blue light component to the screen. Measure luminance on the screen with the luminance meter. It is A for the reading of luminance meter.
It is B for the reading of luminance meter. Enter the service mode, select item no. Receive the step gray scale video signal with Video [Video] mode. Confirm that the same white balance is obtained in video and computer input. White Balance adjustment If you find the color shading on the screen, please adjust the white uniformity by using the proper comput- er and Color Shading Correction software supplied separately.
The adjust- ment items indicated with are required to readjust following to the Electrical adjustments. Other items should be used with the initial data value.
Error Sensor 1 40 72 Temp. High Sensor 2 41 76 Temp. Error Sensor 2 51 77 Temp. Error Sensor 30 78 Temp. Sensor 2 at temp. Control Fan 1 Eco Fan Max. Control Fan 2 71 Eco Fan Max. Control Fan 3 DLY3. Control Fan 1 79 Eco Fan Min. Control Fan 2 62 Eco Fan Min. When this indicator lights yellow, replace the projection lamp with a new one promptly. Reset the Lamp replace counter after replacement of the lamp.
The projector is OFF. The AC power cord is unplugged. The projector is preparing for stand-by or the projection lamp is being cooled down. The projector cannot be turned on until cooling is completed. The temperature inside the projector is abnormally high. The projector can- not be turned on. When the projector is cooled down enough and the tem- perature returns to normal, the POWER indicator lights red and the projec- tor can be turned on.
Check and clean the Air filter. Unplug the AC power cord and plug it again to turn on the projector. If the projector is turned off again, disconnect the AC power cord and contact the dealer or the service center for service and checkup. Do not leave the pro- jector on.
It may cause electric shock or a fire hazard. The projector is operating normally. The projector is in the Power management mode. The projector has been cooled down enough and the temperature returns to normal.
Check and clean the air filters. Indicators and Projector Condition Troubleshooting No Power - When all the LED indicators are not lighting, the symptom indicates that the primary power supply circuit does not operate properly. This projector provides a function which can be specified a defective area simply by indicating the LEDs on the con- trol panel. Check fan operation and power supply lines, and the driving signal status. An abnormality occurs on the secondary power supply lines.
Power failure detection diodes detect abnormal voltage on the power supply circuits. Check the shortage of secondary circuits, ICs, condensers, etc. Check power supply lines, 15VP, 9V, 3.
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