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G2 Adjustment; White Balance Adjustment (15k) - Sony TRINITRON PVM-14L5 Service Manual

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1. Group of models 4 (See Table 2-3.)
1. Input a cross-hatch signal.
2. Make adjustment with the TLV, YCH, YBH VR, and XCV
coils of the deflection yoke to minimize nonconvergence.
3. When the nonconvergence of the TILT component is
included in the horizontal convergence, make adjust-
ment with the TLH compensator. (Fig. 2-28)
2. Groups of models 1, 2, and 3 (See Table 2-3.)
1. Input a cross-hatch signal.
2. Make adjustment with the TLV, YCH VR, and XCV
coils of the deflection yoke to minimize nonconvergence.
3. When the nonconvergence of the TILT component is
included inthe horizontal convergence, insert the TLH
compensator into the deflection yoke for adjustment.
.(Fig. 2-28)
3. Group of models 5 (See Table 2-3.)
1. Input a cross-hatch signal.
2. Make adjustment with the XCV coil of the deflection
yoke to minimize nonconvergence.
3. When the nonconvergence of the TILT component is
included in the vertical convergence, insert the TLV
compensator into the deflection yoke for adjustment.
(Fig. 2-28)

2-13. G2 Adjustment

Conditions
CONTRAST and BIRHT : PRESET positions
1. Input a HD (1080/60i) all-black signal to the COMPO-
NENT Y IN connector.
2. Select the cathode that shows the highest pedestal level
among the red, green and blue cathodes.
3. Connect probe of an oscilloscope as indicated below.
Adjust RV702 on the C board so that the pedestal level
becomes 150 V
as shown in Fig. 2-29.
DC
RED :
TP704 or KR
GREEN :
TP701 or KG
BLUE :
TP702 or KB
A
Standard value A = 150
Fig. 2-29
PVM-14L5/20L5/D14L5A/D20L5A
Pedestal level
±
2 V
DC

2-14. White Balance Adjustment (15k)

1. Connect the 15K window signal to the Y/G terminal of
RGB/COMPONENT IN connector.
2. Enter the service mode.
3. Select COMPONENT.
4. From the operation panel, set as follows :
CONTRAST : 80
BRIGHT : 0 (mechanical center)
5. Select the following submenus from the Service Menu
in the order of : [SIGNAL] → [WHITE|BALANCE]
and set [COLOR TEMP] to D65.
6. Set [X] of the menu to 313 and [Y] to 329. (Increase
brightness to 100 dc/cm
7.
Set [MANUAL/AUTO] to MANUAL.
8. Press the [MONO] key to enter the black-and-white
mode.
9. Select [ADJUST GAIN].
10. While fixing G to 700, adjust B and R for optimum
white balance.
11. Upon completion of adjustment, press the [MENU]
key to return to the previous menu.
12. Change the signal level to 3 cd/cm
13. Select [ADJUST BIAS] of the menu.
14. While fixing G to 700 in the same way as in step 10,
adjust B and R for the unity cut-off level.
15. Upon completion of adjustment, press the [MENU]
key to return to the previous menu.
16. Repeat adjustments from step 9 to step 14 until all
specifications are satisfied all at the same time.
(Tracking)
17. Set [COLOR TEMP] to D93.
18. Se Set [X] of the menu to 283 and [Y] to 298.
19. Set [MANUAL/AUTO] to MANUAL.
20. Repeat adjustments from step 9 to step 16 in the same
way.
21. Press the [MONO] key to exit the black-and-white
mode.
2
or more.)
2
.
2-23

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