Focus Adjustment - Sony TRINITRON KV-AR29M90 Service Manual

KV-AR29M90
RM-993
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
ON DY:
TLV2
(3) Screen-corner Convergence
b
c
Fix a Permalloy assy corresponding to the misconverged
areas.
a
d
Permalloy assembly
Correction Plate to DY Pocket
(Left or Right)
YCH TLV1
XCV
a
a-d : screen-corner
misconvergence
d
b
c

3-3. FOCUS ADJUSTMENT

FOCUS adjustment should be completed before W/B adjustment.
Focus
Screen
FLYBACK TRANSFORMER (T503)
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.
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