Linearity Adjustment - Sony TRINITRON PVM-14L5 Service Manual

2-9. Linearity Adjustment

Find the following adjustment menu in the layer under the
DEFLECTION menu of the service mode.
RASTER H
H SIZE
H CENTER
H POSISION
MARKER SUB L
MARKER SUB R
RASTER V
V SIZE
V CENTER
V BLK TOP
V BLK BOTTOM
OSD TIMING
1. Connect the 480/60I cross hatch signal to the Y/G
terminal of RGB/COMPONENT IN connector.
2. Enter the service mode.
3. Select the 4:3 normal scan mode and check the
followings. (The 16:9 button and UNDER SCAN
button light in green.)
DY Inclination Distortion check
Top and bottom V PIN Distortion Check
If the specifications cannot be met, perform the DY
Neck Rotation Adjustment.
4. Perform the horizontal trapezoid distortion adjustment
using the TLY volume control of DY. If the horizontal
trapezoid distortion is difficult to see, select Green
Only mode. If the horizontal trapezoid distortion is
adjusted significantly, the top and bottom vertical
convergence will become out of adjustments.
5. Connect the 480/60I monoscope signal to the Y/G
terminal of RGB/COMPONENT IN connector.
6. Adjust [V|CENTER] of the menu until picture comes
to the center of the screen in the vertical direction.
7. Connect the 480/60I cross hatch signal to the Y/G
terminal of RGB/COMPONENT IN connector.
8. Adjust [V|SIZE], [V|C|LIN], [V|S|LIN] and
[H|SIZE] until the upper and lower halves of the
screen become symmetrical.
9. Remove the trapezoidal distortion and PIN distortion
of screen using [PARA CONTROL], [TRAPEZOID],
[SIDE PIN BAL], [SIDE PIN], [SIDE PIN S] and
[SIDE PIN W].
10. Repeat adjustments from step 7 to step 9 until all
specifications are satisfied at the same time. (Tracking)
11. Repeat adjustments from step 7 to step 9 starting from
the 4:3 UNDER SCAN mode, then 16:9 NOMAL SCAN
mode and finally 16:9 UNDER SCAN mode. (J/UC)
2-20
GEOMETRY
V S LIN
V C LIN
TRAPEZOID
SIDE PIN
SIDE PIN W
SIDE PIN BAL
PARA CONTROL
SIDE PIN S
12. Repeat adjustments from step 5 to step 8 in the same
way for each of the following signal frequencies.
Horizontal frequency Signal specification
15.625 kHz 575/50I
15.734 kHz 480/60I
27.000 kHz 1080/48I
28.125 kHz 1080/50I
31.250 kHz 575/50P
31.496 kHz 480/60P
33.750 kHz 1035/60I
33.750 kHz 1080/60I
37.500 kHz 720/50P
45.000 kHz 720/60P
V S LIN
V C LIN
PARA CONTROL
TRAPEZOID
SIDE PIN BAL
SIDE PIN
SIDE PIN S
SIDE PIN W
ASPECT ratio
16 : 9/4 : 3
16 : 9/4 : 3
16 : 9
16 : 9
16 : 9/4 : 3
16 : 9/4 : 3
16 : 9
16 : 9
16 : 9
16 : 9
PVM-14L5/20L5/D14L5A/D20L5A