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

Page: 48 / 228

– 47 –
KDP-57XBR2/65XBR2
K
RM-Y185
A Y
PB
63.5
µ
s
A = 1.400
±
0.015 Vp-p
A
Fig. 4-5
4-5. SUB Y/C LEVEL ADJUSTMENT
(FOR THE VDO PATH)
1. Receive the 100 % color bar (480i, 0% setup, component)
signal with VIDEO 5 input.
(White to Black Level Y : 714
±
10 mVp-p, PB,PR : 700
±
10 mVp-p)
2. Connect the oscilloscope between CN005
<
A
a
pin (V_MIDI_Y),
< 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 “0 YLEV” and “1 CLEV” so that the waveform levels
are 1.400
±
0.015 Vp-p.
5. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
4-4. SUB Y/C LEVEL ADJUSTMENT
(FOR THE DRC PATH)
1. Receive the 100 % color bar (480i, 0% setup, component)
signal with VIDEO 5 input.
(White to Black Level Y : 714
±
10 mVp-p, PB,PR : 700
±
10 mVp-p)
2. Connect CN005
< A l
pin (MN_SB_SW) on the B board to 5 V.
3. Connect the oscilloscope between CN005
< A g
pin (V_DRCI_Y),
< A h pin (V_DRCI_PB) on the B board and ground.
4. Set in the service mode and select the category “2103-2”.
5. Adjust “0 YLEV” and “1 CLEV” so that the waveform levels
are 1.400
±
0.015 Vp-p and 1.490
±
0.015 Vp-p.
6. After adjustment finished, press “
[MUTING]
” + “
[ENTER]
”
buttons on the commander to write the data to the NVM.
A Y
PB
63.5
µ
s
B = 1.490
±
0.015 Vp-p
A = 1.400
±
0.015 Vp-p
B
Fig. 4-4
4-6. MAIN DECODER SUB CONTRAST
ADJUSTMENT
(FOR COMPOSITE AND Y/C INPUTS)
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 g
pin (V_DRCI_Y)
on the B board and ground.
3. Set in the service mode and select the category “2103-1”.
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.
4-7. MAIN DECODER SUB COLOR AND SUB
HUE ADJUSTMENT
(FOR COMPOSITE AND Y/C INPUTS)
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
h
pin (V_DRCI_PB)
on the B board and ground.
3. Set in the service mode and select the category “2103-1”.
4. Adjust “3 SCOL” and “4 SHUE” so that the waveform levels
are 1.490
±
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
1.49
±
0.04 Vp-p
C2 – C1 = 0.248
±
0.035 Vp-p
C2
C1
Fig. 4-6
Fig. 4-7