G2 (Screen) Adjustment; Focus Adjustment 1; Neck Assy Twist Adjustment - Sony Trinitron KV-AR29T80C Service Manual

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 located on
the flyback transformer to the point just before the flyback
return lines disappear (to the point before cut-off)

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.
FOCUS
SCREEN
G2
FLYB ACK TRANSFORMER (T502)
168V ± 2V (VDC)
0 V
KV-AR29T80C/AR29X80C

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.
4-6. PICTURE DISTORTION ADJUSTMENT
Note: In this adjustment use the monoscope signal.
Adjust in the service mode "DEF1" and "DEF2".
0 (VPOS)-DEF1
2 (VLIN)-DEF1
11 (SCRL)-DEF1
13 (LVLN)-DEF1
2 (HSIZ)-DEF2
5 (PIN)-DEF2
7 (LCP)-DEF2
9 (VANG)-DEF2
– 17 –
RM-W104 RM-W104
Fig. 4-5
1 (VSIZ)-DEF1
3 (VSCO)-DEF1
12 (UVLN)-DEF1
1 (HPOS)-DEF2
6 (UCP)-DEF2
8 (PPHA)-DEF2
11 (VBOW)-DEF2