Focus Adjustment; G2 (Screen) Adjustments; Sub Brightness Adjustment; White Balance Adjustment - Sony TRINITRON KV-DZ29M50 Service Manual

4-3. FOCUS ADJUSTMENT

FOCUS adjustment should be completed before White
Balance adjustment.
1. Receive digital monoscope pattern.
2. Set Picture Mode to "STANDARD".
3. Adjust focus VR so that the center of the screen
becomes just focus.
4. Change the receiving signal to white pattern and blue
back.
5. Confirm magenta ring is not noticeable. In case magenta
ring is obvious, then adjust FOCUS VR to balance
magenta ring and FOCUS.
FLYBACK TRANSFORMER (T6805)

4-4. G2 (SCREEN) ADJUSTMENTS

1. Set the following condition:
- Picture and Brightness to "STANDARD".
- TV to Video mode.
2. Connect R,G,B of the C board cathode to oscilloscope.
3. Adjust Brightness to obtain the cathode value to the
value stated below.
4. Adjust SCREEN VR [RV9001] on the FBT until the
scanning line disappears.
Cathode setting voltage:
170 V ± 2 (VDC)

4-5. SUB BRIGHTNESS ADJUSTMENT

1. Set TV to RF Mode.
2. Input PAL monoscope to RF mode.
3. Set the following condition:
i) Receive RF PAL monoscope signal
ii) Set "PICTURE MODE" to "CUSTOM" and adjust
PICTURE to 0% and BRIGHTNESS to 50%.
iii) Adjust Sub BRT (service item COLR 006 SBRT)
to make 10 IRE Slightly glimmer.
iv) Apply the offset steps:
Sub Brightnes Offset
Inch
29"

4-6. WHITE BALANCE ADJUSTMENT

1. Set to Service Mode.
2. Input white raster signal using signal generator to
Video 1.
3. Set picture mode to "VIVID".
4) Adjust White Balance
COLR 000
001
003
004
CA100, 100 PLUS: Adjustment Value
X = 0.2444
Y = 0.2466
Color temperature:
45,000°K + 8 MPCD
– 13 –
Offset
Adjusted + 6 Steps
RDRV }
High Light (100IRE)
GDRV
RCUT
}
Cut off (10nit)
GCUT
KV-DZ29M50
RM-GA002