Toshiba 32SW9UA, Service Manual

Page: 14 / 123

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GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
ADJUSTMENT PROCEDURE
<Adjustment condition>
Horizontal adjusment shall be made using E-12CH Philips pattern and DY-
NAMIC image mode.
<Adjustment procedure>
1) Using WID data, reduce the horizontal amplitude until a part of it is dropped out.
2) Using WID data, adjust the horizontal amplitude so that horizontal raster inevitably
contacts with CPT mask.
3) Using the following (Note 1) horizontal screen positional switch, adjust the horizon-
tal raster position to the center position.
4) Using the horizontal amplitude
(WID) and horizontal phase
(HPOS), adjust the horizontal
amplitude so that the right and
left flags are just blinded.
5) Using PARA, TRAP, CNR and CPAR (or TCNR, BCNR or CSAW if necessary),
adjust the screen distortion.
6) If necessary, make the horizontal amplitude adjustment again.
7) Check the side pin distortion in 4:3 mode.
(If necessary, the adjustment shall be made, checking the quality of 4:3 side panel.)
ADJUSTING ITEMS
AND POINTS
For PAL/100 Hz/WIDE
Horizontal amplitude
(WID)
Side pin distortion
(PARA)
Trapezoidal distortion
(TRAP)
Corner distortion
(CNR)
Upper corner distortion
(TCNR)
Lower corner distortion
(BCNR)
CENT distortion
(CPAR)
Parallelogrammatic
distortion (CSAW)
Horizontal phase
(HPOS)
Note 1:
POW/DEF board: P451/
M450
Horizontal screen
positional switch
Screen position shall be
switched by inserting a
plug into the above pin.
Horizontal adjustment * Deflection adjustment shall be made from PAL/100 Hz/WIDE mode.
Hori-
zontal
Right side Left side
CENT
The adjustment shall be made so that the right and left flags are just blinded.
ADJUSTMENT PROCEDURE
* NTSC adjustment shall be made after PAL adjustment.
1) With domestic 13ch, WIDE
mode and DYNAMIC, adjust the
right and left bars to the fifth
center for horizontal phase
(NHPO) and horizontal ampli-
tude (NWID).
2) With domestic 11ch, NPAR, NTRA, NCNR and NCPAR (or NTCNR, NBCNR or
NCSAW if necessary), adjust the screen distortion.
3) If necessary, make horizontal amplitude adjustment again.
4) Check the side pin distortion in 4:3 mode.
(If necessary, the adjustment shall be made, checking the quality of 4:3 side panel.)
ADJUSTING ITEMS
AND POINTS
For NTSC WIDE
Horizontal phase
(NHPO)
Horizontal amplitude
(NWID)
Side pin distortion
(NPAR)
Trapezoidal distortion
(NTRA)
Corner distortion
(NCNR)
CENT distortion
(NCPAR)
Parallelogrammatic
distortion (NCSAW)
Upper corner distortion
(NTCNR)
Lower corner distortion
(NBCNR)
Horizontal adjustment
Hori-
zontal
30
30
20
35
25
30
30
20
35
25
30
30
20
35
25
30
30
20
35
25
30
30
20
35
45
325
525 LINE
50
1
3
5
1
3
5
575 300
5 3 1 5 3 1
Right and left bars shall be adjusted
to the fifth center.