Focus Adjustment - Sony KV- XA29M67 Service Manual

KV-XA29M67/XA29M97/XA34M67/XA34M97
TLV Rotate TLV-2 VOL (29", 34") on DY
Rotate TLV
XCV Rotate XCV Adj core on DY
YCH Rotate YCH VOL on DY
TLH Insert TLH
ON DY:
TLV2
(3) Screen-corner Convergence
b
c
Fix a Permalloy assy corresponding to the
misconverged areas.
a
d
Permalloy assembly
RM-953
VOL (25") on DY
Correction Plate to DY Pocket
(Left or Right)
YCH TLV1
XCV
a
a-d : screen-corner
misconvergence
d
b
c

4-3. FOCUS ADJUSTMENT

FOCUS adjustment should be completed before W/B adjustment.
(Except 34")
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. (a) Adjust focus VR so that the center of screen becomes
just focus.
4. Change the receiving signal to white pattern and blue back.
5. Confirm magenta ring is not noticeable. Incase magenta is
very obvious, adjust focus VR to take balance of magenta
ring and focus.
(For 34")
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "Standard".
3. Set S2801 to mechanical center position.
4. Adjust focus VR so that the center of the screen becomes
just focus.
5. Adjust S2801 when corner focus is unbalance in right and
left.
6. Change the receiving signal to white pattern blue back.
7. Confirm Magenta ring is not noticeable. Incase magneta
ring is very obvious, reset S2801 to mechanical center
posotion and then adjust FOCUS VR to take balance of
MAGENTA RING and FOCUS.
Focus
Screen
FLYBACK TRANSFORMER (T503)
– 34 –