Focus Adjustment - Sony KV-XA29K94 Service Manual

TLV Rotate TLV-2 VOL (29", 34") 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.
(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 ( 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 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
FLYB ACK TRANSFORMER (T503)
– 33 –
KV-XA29K94/XA34K94
RM-962