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Sub Y/c Level Adjustment (for The Drc Path); Sub Y/c Level Adjustment (for The Vdo Path); Main Decoder Sub Contrast Adjustment (for Composite And Y/c Inputs); Main Decoder Sub Color And Sub Hue Adjustment (for Composite And Y/c Inputs) - Sony KDP-57XBR2 Service Manual

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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 <
l pin (MN_SB_SW) on the B board to 5 V.
A
3. Connect the oscilloscope between CN005 <
h pin (V_DRCI_PB) on the B board and ground.
<
A
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 = 1.400 ±0.015 Vp-p
B = 1.490 ±0.015 Vp-p
Y
63.5µs
PB
Fig. 4-4
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
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.
A = 1.400 ±0.015 Vp-p
Y
63.5µs
PB
Fig. 4-5
4-6. MAIN DECODER SUB CONTRAST
1. Receive the 100 % color bar (480i, 7.5% setup, Y/C) signal
g pin (V_DRCI_Y),
2. Connect the oscilloscope between CN005 <
A
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
5. After adjustment finished, press "[MUTING]" + "[ENTER]"
A
B
4-7. MAIN DECODER SUB COLOR AND SUB
1. Receive the 100 % color bar (480i, 7.5% setup, Y/C) signal
2. Connect the oscilloscope between CN005 <
3. Set in the service mode and select the category "2103-1".
A
a pin (V_MIDI_Y),
4. Adjust "3 SCOL" and "4 SHUE" so that the waveform levels
5. After adjustment finished, press "[MUTING]" + "[ENTER]"
A
A
– 47 –
K
ADJUSTMENT
(FOR COMPOSITE AND Y/C INPUTS)
with VIDEO 3 input. (White to Black Level Y : 714 ±10 mVp-p,
Burst Level C : 285 ±10 mVp-p)
on the B board and ground.
Vp-p.
buttons on the commander to write the data to the NVM.
Y
63.5µs
Fig. 4-6
HUE ADJUSTMENT
(FOR COMPOSITE AND Y/C INPUTS)
with VIDEO 3 input. (White to Black Level Y : 714 ±10 mVp-p,
Burst Level C : 285 ±10 mVp-p)
on the B board and ground.
are 1.490 ±0.040 Vp-p and 0.248 ±0.035 Vp-p.
buttons on the commander to write the data to the NVM.
C2 – C1 = 0.248 ±0.035 Vp-p
C2
C1
PB
63.5µs
Fig. 4-7
KDP-57XBR2/65XBR2
RM-Y185
g pin (V_DRCI_Y)
A
1.400 ±0.035 Vp-p
A
h pin (V_DRCI_PB)
1.49 ±0.04 Vp-p

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