Sony KP-41S5 / KP-41S5B / KP-41S5G / KP-41S5K / KP-41S5R / KP-41S5U Service Manual ▷ View online
– 17 –
KP-41S5/41S5B/41S5G/
41S5K/41S5R/41S5U
RM-862
2-7. BEZNET SECTION REMOVAL
1
Screws
(+ BVTP 4X16)
(+ BVTP 4X16)
2
Seven screws
(+ BVTP 4X16)
(+ BVTP 4X16)
3
Four screws
(+ BVTP 4X16)
(+ BVTP 4X16)
5
Four screws
(+ BVTP 4X12)
(+ BVTP 4X12)
4
Beznet assembly
8
Screen holder (H)
9
Screen holder (V)
0
Screen holder (H)
!¡
Screen holder (V)
!™
Duffusion plate (F)
!£
Duffusion plate (L)
!¢
Contrast screen
6
Four screws
(+ BVTP 4X12)
(+ BVTP 4X12)
7
Eight screws
(+ BVTP 4X12)
(+ BVTP 4X12)
!∞
Mirror cover
2-9. SLANT MECHASEAL ASSEMBLY REMOVAL
1
Rubber cap
2
HV cable
turn 90
turn 90
°
2
Rubber cap
1
HV cable
Hook
Gutter
(1) Removal
(2) Installation
2-8. HIGH-VOLTAGE CABLE
INSTALLATION AND REMOVAL
1
Four screws
(+ BVTP 4X16)
(+ BVTP 4X16)
5
Four screws
(+ BVTP 4X16)
(+ BVTP 4X16)
2
CR board
3
Neck assembly
4
Deflection yoke
6
Slant mechaseal
assembly (R)
assembly (R)
7
Extension spring
Removing the arrow-marked screw is strictly inhibited.
If removed, it may cause liquid spill
If removed, it may cause liquid spill
– 18 –
KP-41S5/41S5B/41S5G/
41S5K/41S5R/41S5U
RM-862
2-10. CHASSIS BLOCK REMOVAL
1
Two screws
(+ BVTP 4X16)
(+ BVTP 4X16)
2
Control panel assembly
3
Three connectors
4
Four connectors
5
Screw
(+ BVTP 4X6)
(+ BVTP 4X6)
6
Resister (High voltage)
1
Two screws
(Hexagon head)
(Hexagon head)
3
Set the main
bracket.
bracket.
2
Pull the main bracket, and
remove each connectors on main bracket.
remove each connectors on main bracket.
1
Six screws
(Hexagon head)
(Hexagon head)
2
Pull out the
chassis block.
chassis block.
(3) CHASSIS BLOCK REMOVAL
(1) H1, H2 BOARDS AND AND RESISTOR
REMOVAL
(2) MAIN BRACKET REMOVAL
Pull out the chassis block by gripping the handles as shown
in the diagram.
At this time, pay particular attention to the components
removed in (1).
At this time, pay particular attention to the components
removed in (1).
Pay particular attention to the wires of each Printed circuit
boards when puling out the main bracket.
– 19 –
KP-41S5/41S5B/41S5G/
41S5K/41S5R/41S5U
RM-862
3-1. SCREEN VOLTAGE ADJUSTMENT
(ROUGH ALIGNMENT)
1. Receive the Monoscope signal.
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the FOCUS block all the way to the left
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the FOCUS block all the way to the left
and then gradually turn it to the right until the point where
you can see the retrace line.
you can see the retrace line.
4. Next gradually turn it to the left to the position where the
retrace line disappears.
3-3. SCREEN (G2) ADJUSTMENT
1. Connect jig (A) to 200V. In TP732, CG Board.
2. Connect jig (B) to GND. In TP733, CG Board.
3. Select with Power ON, VIDEO mode without signals.
4. Connect jig (C) to the TP701 (K.CR), TP731 (K:CG), or
2. Connect jig (B) to GND. In TP733, CG Board.
3. Select with Power ON, VIDEO mode without signals.
4. Connect jig (C) to the TP701 (K.CR), TP731 (K:CG), or
TP761 (K.CB) of CR, CG, and CB Board.
5. Adjust R, G, and B screen voltage to until retrace line just
appears with screen VR on the Focus block
3-4. FOCUS VR ADJUSTMENT
1. Set in service mode.
2. Use GH (GSEL) on the service mode menu to shown only
2. Use GH (GSEL) on the service mode menu to shown only
the green color.
3. Press the Commander Menu button (convergence) and out-
put the test signal (crosshach).
4. Rotate the green VR on the FOCUS block and align to ob-
tain the optimal focus point.
5. Use GH (GSEL) from the service mode menu to set to green
and red.
6. Output the test signal and rotate the red VR to obtain the
optimum focus at the point where the red and green spots
overlap.
overlap.
7. Use BH (BSEL) from the service mode menu to set to red
and blue.
8. Output the test signal and rotate the blue VR aligning to ob-
tain the optimum focus at the point where the blue and green
spots overlap.
spots overlap.
R
G
B
SCREEN
R
G
B
FOCUS
FOCUS block
Fig. 3-1
Fig. 3-3
Scanning line visible.
A
B
Minimize both A and B.
Fig. 3-5
Lens
Fig. 3-4
3-2. FOCUS LENS ADJUSTMENT
1. Loose the lens screw.
2. Set in service mode.
3. Use GH (GSEL) on the service mode menu to shown only
2. Set in service mode.
3. Use GH (GSEL) on the service mode menu to shown only
the green color.
4. Press the Commander Menu button and select TEST MENU
and CONVERGENCE to display the test signal (crosshatch)
on the screen.
on the screen.
5. Rotate the green lens and align with the optimal focus point
from the test signal.
6. Use GH (GSEL) from the service mode menu to set to green
and red.
7. Output the test signal and rotate the red lens to obtain the
optimum focus at the point where the red and green spots
overlap.
overlap.
8. Use BH (BSEL) from the service mode menu to set to red
and blue.
9. Output the test signal and rotate the blue lens to obtain the
optimum focus at the point where the blue and red spots over-
lap.
lap.
10. Tighten the lens screw.
Fig. 3-2
Minimize both A and B.
B
A
Scanning line visible.
Test signal
SECTION 3
SET-UP ADJUSTMENTS
(B) GND
(A)
200V
200V
KR-KG-KB (C)
2.2k / 3W x2
5.6k / 3W
2.2k / 3W
– 20 –
KP-41S5/41S5B/41S5G/
41S5K/41S5R/41S5U
RM-862
3-5. DEFLECTION YOKE TILT ADJUSTMENT
1. Set to receive the Monoscope signal.
2. Set in service mode.
3. Place the caps on the red and blue lens so that only the green
2. Set in service mode.
3. Place the caps on the red and blue lens so that only the green
color.
4. Loosen the deflection yoke setscrew and align the tilt of the
Deflection Yoke so that the bars at the center of the monoscope
pattern are horizontal.
pattern are horizontal.
5. After aligning the deflection yoke, fasten it securely to the
funnel-shaped portion (neck) of the CRT.
6. The tilt of the deflection yoke for red and Blue is aligned the
same as was done for green.
Fig. 3-6
3-6. 2-POLE MAGNET ADJUSTMENT
1. Set in service mode.
2. Set to receive the Dot signal.
3. Place the caps on the red and blue lens so that only the green
2. Set to receive the Dot signal.
3. Place the caps on the red and blue lens so that only the green
color is shown.
4. Turn the green VR on the focus block to the right and set to
overfocus to enlarge the spot.
5. Now align the 2-Pole Magnet so that the enlarged spot is in
the center of the Just Focus spot.
6. Align the green focus VR and set for just (precise) focus.
7. Perform the same alignment for red and blue.
7. Perform the same alignment for red and blue.
Fig. 3-7
3-7. 4-POLE MAGNET ADJUSTMENT
1. Set in service mode.
2. Set to receive the Dot signal.
3. Place the caps on the red and blue lens so that only the green
2. Set to receive the Dot signal.
3. Place the caps on the red and blue lens so that only the green
color is shown.
4. Turn the green VR on the focus block to the left and set to
underfocus to enlarge the spot.
5. Now align the 4-Pole Magnet so that the enlarged spot be-
comes a perfect circle.
6. Perform the same alignment for red and blue.
NG
OK
NG
Fig. 3-8
3-8. DEFOCUS ADJUSTMENT (Blue)
1. Receive the Dot signal.
2. Place the caps on the red and green lens so that only the blue
2. Place the caps on the red and green lens so that only the blue
color is shown.
3. Rotate the blue focus volume on the focus pack and adjust to
obtain best electrical focus.
4. Rotate Blue focus volume of focus pack clocwise, so that
diameter of the Dot see Caution.
[How to Blue defocus.]
÷
1
Just Focus
:
1.2
Fig. 3-9
[Change Blue Defocus]
Fig. 3-10
5mm Max.
Use the center dot
Use the center dot
Neck Assy
2-pole magnet
4-pole magnet
Deflection yoke
Anode cap
Deflection yoke should be as more close to
CRT as possible.
CRT as possible.
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