G2 (Screen) Adjustment; Focus Adjustment 1; Neck Assy Twist Ajustment - Sony KV-DW36K9H Service Manual

KV-DW36K9H
RM-970
(3) Screen-corner Convergence
b
a-d : screen-corner
c
Fix a Permalloy assy corresponding to the misconverged
areas.
a
d
Permalloy assembly

4-3. G2 (SCREEN) ADJUSTMENT

1. G2 (SCREEN) ADJUSTMENT
1) Set to zoom mode and the PICTURE and BRIGHTNESS to
normal and to the service mode.
2) In put monoscope signal.
3) Set the service data. CXA2150P-210: ABLK10
4) Connect R, G and B of the C board cathode to the oscillo-
scope.
5) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
6) Whilst watching the picture, adjust the screen VR (RV9002)
located on the C1 board to the point just before the flyback
return lines disappear (to the point before cut-off)
a
misconvergence
d
b
c
170V – 0.5 (VDC)
0 V

4-4. FOCUS ADJUSTMENT 1

Note
Focus adjustment should be completed before W/B adjustment.
(1) Receive digital monoscope pattern.
(2) Set DRC-MF to "Progressive" and PICTURE to "Standard".
(3) Adjust FOCUS VR so that the center of the screen becomes
justfocus.
FLYB ACK TRANSFORMER (T8001)
4-5. NECK ASSY TWIST ADJUSTMENT
(1) Receive dot/hatch pattern.
(2) Turn FOCUS VR fully counter-clockwise.
(3) Confirm the dot shape at the screen center. (Fig. 4-5)
(4) Resume FOCUS VR.
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
OK
Turn NECK ASSY clockwise.
Turn NECK ASSY counter clockwise.
– 66 –
FOCUS
Fig. 4-5