CPD-205F, CPD-205FT - Sony Monitor Service Manual (repair manual). Page 10

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•

1.

Enter the full white signal.

2.

Set the contrast to “CONT”=255.

3.

Make the screen monogreen.

Note: Off the outputs from R ch and B ch of SG.
4.

Reverse the DY, and adjust coarsely the purity magnet so
that a green raster positions in the center of screen.

5.

Moving the DY forward, adjust so that an entire screen be-
comes monogreen.

6.

Adjust the tilt of DY, and fix lightly with a clamp.

Note: "TILT" shall be set at 0.

•

1.

Put the set inside the Helmholtz coil.

2.

Input the single green signal and set the CONT control to
MAX.

Note: Set to 

Σ

-1k=300 

µ

A with the signal green signal, and after

aging for about 30 minutes, adjust so that it is exactly this
value.

3.

Demagnetize the CRT surface with the hand degausser , and
perform auto degaussing.

Note: Adjust in s non-magnetic field.
4.

Attach the wobbling coil to the designated part of the CRT
neck.

5.

Attach the sensor of the landing adjustment unit on the CRT
surface.

6.

Adjust the DY position and purity, and the DY tilt, and land-
ing of the center and 4 corners with the landing checker.

Purity

Adjust the green of corners 1 to 4, and center 6 to 

±

5 

µ

m, and

red and blue to within 

±

7 

µ

m of green, and the difference be-

tween red and blue to within 

±

10 

µ

m.

Adjust the green of 5 and 7 to within 

±

10 

µ

m, and red and blue

to within 

±

7 

µ

m of green, and the difference between red and

blue to within 

±

10 

µ

m.

(Set each corner to 1st frame of the crosshatch.)

7.

For the up/down and left/right swing, swing the DY and in-
sert a wedge so that the up and down pins are equal at the top
and bottom and the horizontal trapezoid is equal at the left
and right. Insert the wedge firmly so that the DY does not
shake.

Signals: Inverted crosshatch signal (monochrome G)

and crosshatch signals (B and R)

“a” and “b” must be equal, and
“c” and “d” must be almost equal.

A and B, or A’ and B’ must be al-
most equal.

C and D, or C’ and D’ must be al-
most equal.

<How to drive in wedges>

Drive in wedges as shown in the
left figure, and apply RTV as
shown with hatched lines.

←

 As viewed from a neck side

8.

Check the landing of each corner, and if they do not satisfy
the specification, paste a Disk-Mg onto the funnel and ad-
just.

Note:
(1) Do not paste more than 2 magnets to one corner.
(2) Paste within 80 to 100 mm from the DY on the diagonal line

of the magnet.

(3) If using the magnet, be sure to demagnetize with the hand

degausser and check.

9.

Remove the sensor and wobbling coil.

10. Switch the signal to R.G.B., and check that each color is

pure.

11. Check that the DY is not tilting, and fix the purity Mg with a

white pen.

12. Fasten DY with screw.
Note: Torque 20 

±

2kg·cm

<Specification>

1

2

4

3

6

7

5

A

B

A = B

c

a

b

d

RB

C

BR

D

C’

D’

or

B

R

A

R

B

B

A’

B’

or