Circuit Adjustments; P & P Sub Contrast Adjustment (Video) (Scon); P & P Sub Contrast Adjustment (Rf) (Scon); P & P Sub-Hue And Sub-Color Adjustment (Shue, Scol) - Sony KP-HW51K90J Service Manual

4-1. P & P SUB CONTRAST ADJUSTMENT
(VIDEO) (SCON)
1. Receive the signal.
TV terminal (sub) : Color-bar (white-75%, No
setup)
VIDEO terminal (main)
2. VIDEO MODE : Pro
PICTURE : maximum
COLOR : minimum
RGB Signal : off
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
: CN5 pin 6 (G)
Check points
(A Board)
5. Select " 2103-1-02 "(Main scon), and adjust so that the wave-
form level of VWB is 1.67 ± 0.04Vp-p.
6. Select " 2103-2-02 "(Sub scon), and adjust so that the wave-
form level of VWB is 1.67 ± 0.04Vp-p.
7. Write the data into memory.
MUTING n ENTER
Fig. 4-1
4-2. P & P SUB CONTRAST ADJUSTMENT (RF)
(SCON)
1. Receive the signal.
TV terminal (main): Color-bar (white-75%, No
setup)
VIDEO terminal (sub): Color-bar (white-75%, No
setup)
2. VIDEO MODE : Pro
PICTURE : maximum
COLOR : minimum
RGB Signal : off
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
: CN5 pin 6 (G)
Check points
(A Board)
5. Select " 2103-1-02 "(Main scon), and adjust so that the wave-
form level of VWB is 1.67 ± 0.04Vp-p.
6. Select " 2103-2-02 "(Sub scon), and adjust so that the wave-
form level of VWB is 1.67 ± 0.04Vp-p.
7. Write the data into memory.
MUTING n ENTER
Fig. 4-2
SECTION 4

CIRCUIT ADJUSTMENTS

: Color-bar (white-75%, No
setup)
WHITE
VWB
BLACK
WHITE
VWB
BLACK
4-3. P & P SUB-HUE AND SUB-COLOR ADJUSTMENT
(SHUE, SCOL)
1. Receive the signal.
TV terminal (sub)
VIDEO terminal (main) : Color-bar (white-75%, No
2. VIDEO MODE
PICTURE
COLOR
RGB Signal
3. Set to P & P mode, set to service mode.
4. Connect an oscilloscope between pin 7 (B) of CN5 (A board)
connecter and ground.
5. Select " 2103-1-03 SCOL, -04 SHUE "(Main), and adjust
< =
them to have VB1
levels.
6. Select " 2103-2-03 SCOL, -04 SHUE "(Sub), and adjust them
< =
to have VB1 VB4 and VB2 VB3 in the waveform levels.
7. Write the data into memory.
MUTING n ENTER
4-4. P & P SUB-HUE AND SUB-COLOR ADJUSTMENT
(SHUE, SCOL)
1. Receive the signal.
TV terminal (main)
VIDEO terminal (sub) : Color-bar (white-75%, No
2. VIDEO MODE
PICTURE
COLOR
RGB Signal
3. Set to P & P mode, set to service mode.
4. Connect an oscilloscope between pin 7 (B) of CN5 (A board)
connecter and ground.
5. Select " 2103-1-03 SCOL, -04 SHUE "(Main), and adjust
< =
them to have VB1
levels.
6. Select " 2103-2-03 SCOL, -04 SHUE "(Sub), and adjust them
< =
to have VB1 VB4 and VB2 VB3 in the waveform levels.
7. Write the data into memory.
MUTING n ENTER
– 31 –
KP-HW51K90J/HW57K90J
RM-Y909K
: Color-bar (white-75%, No
setup)
setup)
: Pro
: maximum
: center
: on
< =
VB4 and VB2 VB3 in the waveform
< =
VB1 VB2 VB3 VB4
Fig. 4-3
: Color-bar (white-75%, No
setup)
setup)
: Pro
: maximum
: center
: on
< =
VB4 and VB2 VB3 in the waveform
< =
VB1 VB2 VB3 VB4
Fig. 4-4
RM-Y909K