Philips 27PS60S321, Техническая сервисная информация

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Safety & MaintenanceInstructions, Warnings,
And Notes
Safety Instructions For Repairs
Safety regulations require that during a repair:
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Due to the ‘hot’ partsof this chassis, the set must be connected to the AC power via
anisolation transformer.
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Safety components, indicated by the symbol , should be replaced bycomponents
identical to the original ones.
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When replacing the CRT, safety goggles mustbe worn.
Safety regulations require that after a repair, the setmust be returned in its original condition.
Pay particular attentionto the following points:
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General repairinstruction: as a strict precaution, we advise you to re-solderthe solder
connections through which the horizontal deflection currentis flowing, in particular:
„
all pins ofthe line output transformer (LOT)
„
fly-back capacitor(s)
„
S-correction capacitor(s)
„
line output transistor
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pins of the connector with wires to the deflectioncoil
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other components through which the deflectioncurrent flows.
Note: This re-soldering is advised to prevent bad connections dueto metal fatigue in solder
connections and is therefore only necessaryfor television sets more than two years old.
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Route thewire trees and EHT cable correctly and secure them with the mountedcable
clamps.
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Check the insulation of the AC power cord forexternal damage.
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Check the strain relief of the AC power cordfor proper function, to prevent the cord from
touching the CRT,hot components, or heat sinks.
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Check the electrical DC resistance between theAC plug and the secondary side (only for
sets that have an isolated powersupply). Do this as follows:
1. Unplug theAC power cord and connect a wire between the two pins of the ACplug.
2. Turn on the main power switch (keep the AC power cordunplugged!).
3. Measure the resistance value between the pinsof the AC plug and the metal
shielding of the tuner or the aerialconnection of the set. The reading should be
Page 1 of 3 SPMS
7/8/2004