Philips philips 42pf9936d 37 985 free download

File name philips_42pf9936d_37_985.pdf

SPMS Page 1 of 4 Safety Instructions, Warnings, and Notes Safety Instructions Safety regulations require that during a repair: Connect the set to the AC Power via an isolation transformer (> 800 VA). Replace safety components, indicated by the symbol , only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard. Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points: Route the wire trees correctly and fix them with the mounted cable clamps. Check the insulation of the AC Power lead for external damage. Check the strain relief of the AC Power cord for proper function. Check the electrical DC resistance between the AC Power plug and the secondary side (only for sets which have a AC Power isolated power supply): 1. Unplug the AC Power cord and connect a wire between the two pins of the AC Power plug. 2. Set the AC Power switch to the 'on' position (keep the AC Power cord unplugged!). 3. Measure the resistance value between the pins of the AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 Mohm and 12 Mohm. 4. Switch 'off' the set, and remove the wire between the two pins of the AC Power plug. Check the cabinet for defects, to avoid touching of any inner parts by the customer. Warnings All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD ). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. Wristband tester 4822 344 13999. Be careful during measurements in the high voltage section. Never replace modules or other components while the unit is switched 'on'. When you align the set, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable. Notes General 11/19/2005 SPMS Page 2 of 4 Measure the voltages and waveforms with regard to the chassis (= tuner) ground ( ), or hot ground ( ), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default