Sony TRINITRON KV-XA25M93, Service Manual

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KV-XA25M93/XA29M80
RM-954
(3) Screen-corner Convergence
Fix a Permalloy assy corresponding to the misconverged
areas.
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 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.
(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 is right and left.
6. Change the receiving signal to white pattern blue back.
7. Confirm Magenta ring is not noticable. Incase magneta ring is
obvious, reset S2801 to mechanical center position and then
adjust FOCUS VR to balance between MAGENTA RING and
FOCUS.
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:
Screen
Focus
a
b
c
d
Permalloy assembly
b a
c d
a-d : screen-corner
misconvergence
YCH
XCV
TLV1
TLV2
FL YB A CK TRANSFORMER (T503)