Sony KDP-57XBR2 - Digital High Definition Projection Tv, Service Manual

Page: 49 / 228

– 48 –
KDP-57XBR2/65XBR2
K
RM-Y185
4-8. SUB DECODER SUB CONTRAST
ADJUSTMENT (FOR Y/C INPUT)
1. Receive the 100 % color bar (480i, 7.5% setup, Y/C) signal
with VIDEO 3 input. (White to Black Level Y : 714
±
10 mVp-p,
Burst Level C : 285
±
10 mVp-p)
2. Connect the oscilloscope between CN005
< A a
pin (V_MIDI_Y)
on the B board and ground.
3. Set in the service mode and select the category “2103-2”.
4. Adjust “2 SCON” so that the waveform level is 1.400
±
0.035
Vp-p.
5. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
4-9. SUB DECODER SUB COLOR AND SUB
HUE ADJUSTMENT (FOR Y/C INPUT)
1. Receive the 100 % color bar (480i, 7.5% setup, Y/C) signal
with VIDEO 3 input. (White to Black Level Y : 714
±
10 mVp-p,
Burst Level C : 285
±
10 mVp-p)
2. Connect the oscilloscope between CN005
<
A
s
pin (V_MIDI_PB) on
the B board and ground.
3. Set in the service mode and select the category “2103-2”.
4. Adjust “3 SCOL” and “4 SHUE” so that the waveform levels
are 1.400
±
0.040 Vp-p and 0.248
±
0.035 Vp-p.
5. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
1.400
±
0.035 Vp-p Y
63.5
µ
s
PB
63.5
µ
s
1.40
±
0.04 Vp-p
C2 – C1 = 0.248
±
0.035 Vp-p
C2
C1
Fig. 4-8
Fig. 4-9
4-10. SUB DECODER SUB CONTRAST
ADJUSTMENT
(FOR COMPOSITE INPUT)
1. Receive the 100 % color bar (480i, 7.5% setup, composite)
signal with VIDEO 1 input.
(Wite to Black Level : 714
±
10 mVp-p, Burst Level : 285
±
10 mVp-p)
2. Connect the oscilloscope between CN005
< A a
pin (V_MIDI_Y)
on the B board and ground.
3. Set in the service mode and select the category “2103-2”.
4. Adjust “22 2SCO” so that the waveform level is 1.400
±
0.035 Vp-p.
5. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
4-11. SUB DECODER SUB COLOR AND SUB
HUE ADJUSTMENT
(FOR COMPOSITE INPUT)
1. Receive the 100 % color bar (480i, 7.5% setup, composite)
signal with VIDEO 1 input.
(Wite to Black Level : 714
±
10 mVp-p, Burst Level : 285
±
10 mVp-p)
2. Connect the oscilloscope between CN005
<
A
s
pin (V_MIDI_PB) on
the B board and ground.
3. Set in the service mode and select the category “2103-2”.
4. Adjust “23 2SCL” and “24 2SHU” so that the waveform levels
are 1.400
±
0.040 Vp-p and 0.248
±
0.035 Vp-p.
5. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
1.400
±
0.035 Vp-p Y
63.5
µ
s
PB
63.5
µ
s
1.40
±
0.04 Vp-p
C2 – C1 = 0.248
±
0.035 Vp-p
C2
C1
Fig. 4-10
Fig. 4-11