PROFILO profilo sm1 mono chassis tv sm only 888 free download

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SM 1 Mono Chassis Service Manual INDEX Page Recommendation for service repairs 4 Specification 5 Servicing adjustment and alignments 6 Block diagram 8 Switch mode power supply section 9 Channel section 17 Analog operation section 21 AF amplifier section 28 Teletext circuit 31 AV circuit 40 Drive circuit 43 CRT circuit 48 Remote sensor circuit 52 Oscilloscope signals 53 PIN voltages of IC's 54 Chassis replacement parts list 55 3 SM 1 Mono Chassis Service Manual RECOMMENDATION FOR SERVICE REPAIRS 1- Use only original spare parts. Only use components with the same specifications for replacement. 2- Original fuse value only should be used. 3- Main leads and connecting leads should be checked for external damage before connection. Check the insulation. 4- Parts contributing to the safety of the product must not be damaged or obviously unsuitable. This is valid especially for insulators and insulating parts. 5- Thermally loaded solder pads are to be sucked off and re-soldered. 6- Ensure that the ventilation slots are not obstructed. 7- Potentials as high as 25 KV are present when this receiver is operating. Operation of the receiver outside the cabinet or with back cover removed involve a shock hazard from the receiver. Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. Perfectly discharge the high potential of the pic- ture tube before handling the tube. The picture tube is highly evacuated and if broken. Glass frogments will be violently expelled. Always discharge the picture tube anode to the receiver chassis to keep of the shock hazard before re- moving the anode cap. 8- Keep wire away from the high voltage or high temperature components. 9- When replacing a wattage resistor in circuit board, keep the resistor 10 mm away from circuit board. HANDLING OF MOS CHIP COMPONENTS MOS circuit requires special attention with regard to static charges. Static charges may occur with any highly insulating plastics and can be transferred to persons wearing clothes and shoes made of synthe- tic materials. Protective circuits on the inputs and outputs of mos circuits give protection to a limited ex- tend only due to time of reaction. Please observe the following instructions to protect the components against damage from static char- ges. 1- Keep MOS components in conductive package until they are used. Most components mu