DOWNLOAD Sony KV-29FV15A Service Manual ↓ Size: 26.66 MB | Pages: 85 in PDF or view online for FREE

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Coated earth ground strap

 Do not use sharp objects which may cause damage to the sur-

face of the anode-cap.

 Do not squeeze the rubber covering too hard to avoid damaging

the anode-cap. A material fitting called a shatter-hook terminal is
built into the rubber.

 Do not force turn the foot of the rubber cover. This may cause the

shatter-hook terminal to protrude and damage the rubber.

 Turn up one side of the rubber cap in

the direction indicated by arrow 

.

 When one side of the rubber cap sepa-

rates from the anode button, the anode-
cap can be removed by turning the rub-
ber cap and pulling it in the direction of

arrow 

.

 Use your thumb to pull the rubber cap

firmly in the direction indicated by

arrow 

.

WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge CRT before

attempting to remove the anode-cap. Short between anode and coated earth ground strap of CRT.

After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT
shield, or carbon painted on the CRT.

High voltage remains in the CRT even after
the power is disconnected. To avoid electrical
shock, discharge CRT before attempting to
remove the anode-cap. Short between anode
and coated earth ground strap of CRT.

Four screws

(Tapping screw 7)

 

Chassis

 GA board

A board

 AK board

 Anode-cap

Cushion

 

Deflection yoke

Neck assy

UY board

 Picture tube

 C board

1.

Input white pattern from pattern generator.

2.

Loosen the deflection yoke mounting screw, and set

       the purity control to the center as shown below:

3.

Input green pattern from pattern generator.

4.

Move the deflection yoke backward, and adjust with

the purity control so that green is in the center and
red and blue are even on both sides.

B

R

G

 Perform the adjustments in order as follows:

1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)/White Balance

  Note:  Test Equipment Required:

1. Color Bar Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter
5. Oscilloscope
6. CRT Analyzer

Input a white pattern signal.

Face the picture tube in an East or West direction to reduce the influence of geomagnetism.

NOTE: Do not use the hand degausser because it magnetizes the CRT .

5.

Move the deflection yoke forward, and adjust so that

the entire screen becomes green.

6.

Switch over the raster signal to red and blue and
confirm the condition.

7.

When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.

8.

When landing at the corner is not right, adjust by using  the
disk magnets.

a

b

c

d

d

a

c

Purity control

corrects this area.

Disk magnets or

rotatable disk

magnets correct

these areas(a-d).

Deflection yoke positioning

corrects these areas.

b

   The following adjustments should be made when a
   complete realignment is required or a new picture
   tube is installed.

   These adjustments should be performed with rated
   power supply voltage unless otherwise noted.

   The controls and switch should be set as follows
   unless otherwise noted:

PICTURE control ................. normal

BRIGHTNESS control ......... normal