Hi-Level/Cut-Off Adjustment - Sony KF-50XBR800 Service Manual

4. Component Input Adjustment
1) Enter the Component 480i color bar (100%) signal.
2) Set the adjustment conditions in 1. Preparation, and further set
the following data.
Adjustment conditions
Category
P-BOOST1 0
2103-1 22
23
3) Measure the waveform, and repeat the SCOL and SHUE ad-
justments so that VB1 = VB4, and VB2 = VB3.
Adjustment position
Category
2170P-4 0
1
VB1 VB2 VB3
GND
4) After the adjustment finished, return the data set in 2) to origi-
nal values, and write the data by pressing the [MUTE] + [EN-
TER] buttons on the remote commander.
5) Enter the Component 1080i color bar (100%) signal.
6) Set the adjustment conditions in 1. Preparation, and perform
adjustment in step 3).
7) After the adjustment finished, return the data set in 6) to origi-
nal values, and write the data by pressing the [MUTE] + [EN-
TER] buttons on the remote commander.
8) Enter the Component 480p signal. Set same values as those
adjusted in 6) and write the data by pressing the [MUTE] + [EN-
TER] buttons on the remote commander.
9) Enter the Component 720p signal. Set same values as those
adjusted in 6) and write the data by pressing the "[MUTE] +
[ENTER] buttons on the remote commander.
10) Enter the Component 1080i signal. Set same values as those
adjusted in 6) and write the data by pressing the "[MUTE] +
[ENTER] buttons on the remote commander.
Item Data
BSET 0
ATPD 0
DCTR 0
Item
COL
HUE
VB4

3-2-2. Hi-Level/Cut-Off Adjustment

1) Enter the Video window signal, and set the PICTURE MODE
to "Vivid".
2) Connect an oscilloscope to the CN702 on the BB board.
Measurement positions
R pin 5 (TP742)
G pin 3 (TP743)
B pin 1 (TP744)
3) For each output waveform of R, G, and B, repeat respective
adjustment items so as to attain H/L = 3.90 V ±1 STEP and C/
O = 2.20 V ±1 STEP.
Adjustment position
Category
MCP ADJ1
GND
4) After the adjustment finished, write the data by pressing the
[MUTE] + [ENTER] buttons on the remote commander.
5) Change over the PICTURE MODE to "Mild", and perform the
steps 3) and 4).
6) Enter the Component 480i window signal, and change over the
PICTURE MODE to "Vivid".
7) Perform the steps 3) to 5).
8) Enter the Component 1080i window signal, and change over
the PICTURE MODE to "Vivid".
9) Perform the steps 3) and 4).
10) Enter the Component 480p signal. Set same values as those
adjusted in 9) and write the data by pressing the [MUTE] + [EN-
TER] buttons on the remote commander.
11) Enter the Component 720p signal. Set same values as those
adjusted in 9) and write the data by pressing the [MUTE] + [EN-
TER] buttons on the remote commander.
– 66 –
KF-50XBR800/60XBR800
K
RM-Y912
Item
0 RDRV
1 RCUT
2 GDRV
3 GCUT
4 BDRV
5 BCUT
H/L
C/O
RM-Y912