Picture Quality Adjustment; Deflection Adjustment - Sony TRINITRON KV-BT212M80 Service Manual

KV-BT212M80/P40/P52/P52/L/P52/N/BT212M81/BT212N40/BT212N50
3-3. PICTURE QUALITY ADJUSTMENTS
PMAX/CONTRAST ADJUSTMENT
1. Select Video Mode.
2. Input PAL CB to TV set (others), Input NTSC 75% CB
to TV set (NTSC model).
3. Set PICT 003 "PWL" to 00h and WHBL 017 "BLBG" to
01h.
4. Set the following condition:
PICTURE 100%, COLOR 0%, BRIGHTNESS 50%.
5. Connect an oscilloscope to pin 4 (R output) of CN004.
6. Set to Service Mode "PWL" to 00h, "BLBG" to 01h.
7. Select SADJ 000 "PMAX" with
commander then adjust VR within spec with
1.23 ± 0.03 Vp-p = for NTSC VM Models
1.46 ± 0.03 Vp-p = for 21" without VM Models
1.65 ± 0.03 Vp-p = with VM Models except NTSC models
1.10 ± 0.03 Vp-p = for 21" NTSC non VM Models
1.38 ± 0.03 Vp-p = for 14" Models
8. Then press [MUTING] t
9. Set "PWL" and "BLBG" back to initial data respectively.
(PWL: 01h and BLBG: 00h)
SUB COLOR ADJUSTMENT
1. Select Video and set Picture mode.
2. Input PAL 100% CB to TV set (others), Input NTSC
75% CB to TV set (NTSC model).
3. Set PICT 006 "WTS" to 00h, and Intelligent Picture to
"OFF".
4. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%,
HUE (OTHER, SHP 50%).
5. Connect an oscilloscope to pin 2 (B output) of CN004.
6. Select to Service Mode and adjust SADJ 004 "SCOL"
with and of commander then adjust to
1 4
VB2 = VB3 = VB4 with
data as +10 step with +5 step offset.
VB2 = VB3 = VB4 (for PAL sub color adjustment)
VB1 = VB4 (for NTSC sub color adjustment)
(Difference is within 70mV)
7. Then press [MUTING] t
8. Set "WTS" back to original data and set Intelligence
Picture to "ON".
RM-W101 RM-W100
and of the
1 4
3
VR
Black
to write the data.
-
and , and write in the
3 6
VB1
VB2 VB3 VB4
to write the data.
-
RM-W151 RM-W150
SUB HUE ADJUSTMENT
1. Select Video.
2. Input NTSC 3.58 Color Bar to TV set.
3. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%,
HUE CENTER, SHP 50%.
4. Connect an oscilloscope to pin 2 (B output) of CN004.
5. Set to service and adjust SADJ 001 "SHUE" with
and of commander then adjust to
4
VB1 = VB2 = VB3 = VB4 with
6. Then press [MUTING] t
7. Select TV channel with NTSC 3.58 and repeat
item 3-6. (Except GA NTSC model).
8 i) Select TV channel with 3.58 repeat 3-5, +1 step
and .
6
data offset (applied to GA NTSC models).
ii) Then press [MUTING] t
The highest level of VB1, VB2, VB3, VB4 must be
aligned at the same time.
The ideal difference between VB2 and VB3 is within
±80mV.
9. For single system with NTSC 4.43 select TV channel
with NTSC 4.43 and repeat 3-6.
3-4.

DEFLECTION ADJUSTMENT

H-TRAPEZOID ADJUSTMENT
1. Receive cross hatch/dotsignal.
2. Adjust on to make H-Trapezoid distortion best.
NORMAL MODE (50Hz)
1. Set to Service Mode.
2. Input SPCB Signal.
3. Using the
Mode).
– 30 –
and
3
to write the data.
-
to write the data.
-
VB1
VB3 VB4
VB2
and button select GEOM (Service
1 4
1
.
6