Focus Adjustment - Sony KV-XA25M80 Service Manual

TLV Rotate TLV-2 VOL (29", 34") on DY
Rotate TLV VOL (25") on DY
XCV Rotate XCV Adj core on DY
YCH Rotate YCH VOL on DY
TLH Insert TLH Correction Plate to DY Pocket (Left or
Right)
ON DY:
YCH
TLV2
(3) Screen-corner Convergence
b
a-d : screen-corner
misconvergence
c
Fix a Permalloy assy corresponding to the misconverged
areas.
a
d
Permalloy assembly
TLV1
XCV
a
d
b
c

4-3. FOCUS ADJUSTMENT

FOCUS adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. (a) Adjust figure VR so that the center of screen becomes
just focus ( except 25").
(b) Adjust focus VR so that the lion teeth becomes just
focus (25" only).
4. Change the receiving signal to white pattern and blue back.
5. Confirm magenta ring is not noticable. Incase magenta ring
is obvious, adjust FOCUS VR to balance between
MAGENTA RING and FOCUS.
Focus
Screen
FLYBACK TRANSFORMER (T503)
– 47 –
KV-XA25M80/XA25M83/XA25N90
RM-954 RM-914