Sony KDP-57XBR2 - Digital High Definition Projection Tv, Руководство по обслуживанию

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8. After adjustment is finished, press the
“MUTING” + “ENTER” buttons on the
remote to write the data to memory.
2-15 SUB CONTRAST
ADJUSTMENT
1. Display a window pattern (1080i
component) signal through VIDEO 5
input and set PICTURE to maximum.
An HDTV pattern generator is required
for this. A window pattern consists of a
bright white square or rectangle on a
black background, something like this:
2. Connect an oscilloscope to CN3009
pin 6 (G) on the A board.
3. Enter the service mode and select
category “2150P- 4”.
4. Adjust item #0 "SCON” so that the
waveform level is 2.30 ±0.05Vp-p.
5. After adjustment is finished, press the
“MUTING” + “ENTER" buttons on the
remote to write the data to memory.
6. Display a 1/25 window (1080i DTV)
signal.
This pattern can be internally
generated within the TV. See the
section on displaying internal
patterns in section 2-23 at the end of
this picture adjustment section
.
7. Adjust item #0 "SCON” so that the
waveform level is 2.30 ±0.05Vp-p.
8. After adjustment is finished, press the
“MUTING” + “ENTER" buttons on the
remote to write the data to memory.
2-16 SUB COLOR AND SUB HUE
ADJUSTMENT
1. Display 100 % color bars (1080i,
component) signal through VIDEO 5
input, and set PICTURE to maximum.
An HDTV pattern generator is required
for this.
2. Connect an oscilloscope to CN3009
pin 7 (B) on the A board.
3. Enter the service mode and select
category “2150P- 4”.
4. Adjust item #1 "SCOL” and item #2
"SHUE” so that the waveform levels are
as follows: VB1 = VB4 and VB2 = VB3.
5. After adjustment is finished, press the
“MUTING” + “ENTER” buttons on the
remote to write the data to memory.
6. Display 100 % color bars (1080i, DTV)
signal.
This pattern can be internally
generated within the TV. See the
section on displaying internal
patterns at the end of this picture
adjustment section.
7. Adjust item #1 "SCOL” and item #2
"SHUE” so that the waveform levels are
as follows: VB1 = VB4 and VB2 = VB3.
8. After adjustment is finished, press the
“MUTING” + “ENTER” buttons on the
remote to write the data to memory.
2-17 RF SUB CONTRAST
ADJUSTMENT
1. Display the TWIN mode by pressing
the
button on the remote, then set
PICTURE to maximum and color to
minimum.
2. Display 75 % color bars (RF) signal
through the VHF-UHF input, and tune
both picture windows to the same
channel that the color bar generator is
set to.
3. Connect an oscilloscope to CN3009
pin 6 (G) on the A board.
4. Select category “2103-1”.
5. Adjust item #2 "SCON" so that the left
side waveform level is 1.59 ±0.05 Vp-p.
Fig. 2.15
29.63 uS
2.30 ±0.05 Vp-p
Fig. 2.16
29.63 uS
VB1 VB2 VB3
VB4
2.20 ±0.05 Vp-p
16.7 ms
Fig. 2.14
Reference Pulse
GND