DOWNLOAD Sony KDS-50A2020 / KDS-55A2020 / KDS-60A2020 Service Manual ↓ Size: 7.73 MB | Pages: 127 in PDF or view online for FREE

– 4 –

Take the new lamp out of the box.
Do not touch the glass portion of the new lamp.

Remove the outside lamp cover.

Release the two clamps as shown in the illustration below. 

Remove the lamp door.

Turn the screw counterclockwise and slide the lever to the left. Remove 
the door.

Pull out the lamp.

Hold the indented grooves on the top corners of the lamp, as shown in 
the illustration, and pull the lamp straight out. If the lamp is hard to 
remove, pull the right side of the lamp for additional traction.

•

Do not shake the lamp. Vibration can damage the lamp or shorten 
its life.

•

Avoid touching the front glass of a new lamp or the glass of the 
lamp receptacle. This may reduce picture quality or lamp life.

Hold this part of the lamp

– 5 –

Put the new lamp into its place.
Insert the new lamp by pressing the two parts firmly into place as shown 
in the illustration. Make sure the lamp is securely mounted into the 
compartment. Failure to do so may cause a fire or the screen to go dark. 

Reattach the lamp door.

Replace the door by inserting the two tabs in the slot from the left side. 
Slide the lever to the right and then turn the screw clockwise to secure 
the door.

•

Do  not touch the inside of the lamp compartment.

•

The lamp is very hot immediately after use. Never touch the glass 
portion of the lamp or the surrounding parts.

•

After the used lamp has cooled, place it into the empty box of the 
replacement lamp. Never put the used lamp into a plastic bag.

•

The lamp compartment is tilted, as shown in the following 
illustration.

•

If the lamp is not securely reattached, the self-diagnostic function 
may be triggered and the POWER LED blinks three times.

– 6 –

Put the outside lamp cover back in its place.
Replace the cover, inserting it from the left side. Press the two tabs on 
the right side to secure the cover.

Turn on the TV and set the 

Lamp Replacement

 option in the 

Setup

 

settings.  This setting is necessary to inform you when the 

next lamp replacement is needed.  

This product contains mercury. Disposal of this product may be regulated if 
sold in the United States. For disposal or recycling information, please 
contact your local authorities or the Electronics Industries Alliance 
(http://www.eiae.org).

•

Do not leave the used lamp near flammable materials or within the 
reach of children.

•

Do not pour water onto the used lamp or put any object inside the lamp. 
Doing so may cause the lamp to burst.

•

Until you set the Lamp Replacement option, a message 
announcing that the lamp is at the end of its life will appear every 
time you turn on the TV.

•

Consult your Sony dealer for a Sony XL-5200 replacement lamp.

•

Take great care when replacing the lamp or plugging in/unplugging 
the connecting cords. Rough handling may cause the TV to fall, 
damaging the TV, the TV stand and the floor. 

– 7 –

( US model only )

After correcting the original service problem, perfom the follow-

ing safety checks before releasing the set to the customer:

l.

Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps,

and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly tran-

sistors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.

5. Look for parts which, through functioning, show obvious

signs of deterioration. Point them out to the customer and
recom mend their replacement.

6. Check the line cords for cracks and abrasion. Recommend

the replacement of any such line cord to the customer.

7. Check the condition of the monopole antenna (if any). Make

sure the end is not broken off, and has the plastic cap on it.
Point out the danger of impalement on a broken antenna to
the customer, and recommend the antenna’s replacement.

8. Check the B+ and HV to see they are at the values specified.

Make sure your instruments are accurate;be suspicious of
your HV meter if sets always have low HV.

9. Check the antenna temminals, metal trim, “metallized” knobs,

screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

The AC leakage from any exposed metal part to earth ground and

from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5mA (500 microampers) . Leak-
age current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or

RCA WT-540A. Follow the manufacturers’ instructions to
usc these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOM that is suitable. NearIy all bat-
tery operated digital multimeters that have a 2V AC range
are suitable. (See Fig. A)

A cold-water pipe is guaranteed earth ground;the cover-plate re-

taining screw on most AC outlet boxes is also at earth ground. If
the retaining screw is to be used as your earth-ground, verify that it
is at ground by measuring the resistance between it and a cold-
water pipe with an ohmmeter. The reading should be zero ohms. If
a cold-water pipe is not accessible, connect a 60-l00 watts trouble
light (not a neon lamp) between the hot side of the receptacle and
the retaining screw. Try both slots, if necessary, to locate the hot
side of the line, the lamp should light at normal brilliance if the
screw is at ground potential. (See Fig. B)

Ω

µ F