– 16 –
KP-FW46M31/FW51M31
RM-1015
Fig. 3-6
SECTION 3
SET-UP ADJUSTMENTS
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 pack all the way to the left and
then gradually turn it to the right until the point where you can
see the retrace line.
4. Next gradually turn it to the left to the position where the
retrace line disappears.
3-2. SCREEN (G2) ADJUSTMENT
(FINE ADJUSTMENT)
1. Turn on the power of the set.
2. Select VIDEO1 and make no signal input.
3. Supply DC (177.5
±
0.5V) from external power supply to KR
(Fig.3-2).
3. Turn red of G2 VR clockwise, then retrace line appear.
4. Turn G2 VR counterclockwise and set retrace line just
disappear (Fig.3-3).
5. Add DC voltage DC (174
±
0.5V) to KR.
6. Confirm if retrace can be seen.
7. Adjust green and blue at the same method.
3-3. FOCUS ROUGH ADJUSTMENT
1. Connect VIDEO-1 terminal.
2. Receive video dot hatch pattern.
3. Use lens-cover to red and blue.
VMcoil Assy
Make sure deflection yoke is
touching CRT closely.
2-pole magnet
4-pole magnet
Deflection yoke
Anode cap
Centering magnet
Fig. 3-1
4. Adjust electric focus (roughly).
5. Rotate the green lens and adjust to obtain the best lens focus.
6. Rotate the green focus volume on the focus pack and adjust to
obtain best electrical focus.
7. If focus is not good, repeat 4 process.
8. Repeat above process for red and blue lenses and electric fo-
cus.
9. Fix lens screw.
3-4. DEFLECTION YOKE TILT ADJUSTMENT
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
color.
3. 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.
4. After aligning the deflection yoke, fasten it securely to the
funnel-shaped portion of the CRT.
5. The tilt of the deflection yoke for red and blue is aligned the
same as was done for green.
SCREEN
B
R
G
FOCUS
Focus Pack
B
R
G
+
–
Power
Supply
Dummy Resister
3k ohm 20W
Fig. 3-2
Fig. 3-3
Test signal
Fig. 3-5
Lens
Fig. 3-4
Minimize both A and B.
A
B
Scanning line visible.
