Sony GRAND WEGA KDF-55XS955 Operating Instructions Manual page 18

Loosen the screw that holds the lamp, then pull out the lamp.
/_ The lamp is very hot immediately after use. Never touch the front
glass of the lamp or the surrounding parts.
/_ After it has cooled, place the used lamp into the empty box of the
replacement lamp. Never put the used lamp into a plastic bag while
the lamp is hot.
Reattach the lamp.
Place back the new lamp and tighten the screw.
Replace the lamp cover, slide the knob to right till the A/V mark
matches, and then tighten the screw.
/_ If the lamp cover screw is inserted incorrectly, the lamp may not
operate properly, in such a case, remove the screw, insert it
correctly and then tighten the screw completely.
/_ if the lamp cover is not reattachedsecurely,the self-diagnostic
function may be triggered and the POWER/STANDBY indicator
flashes three times (see page 122).
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