Circuit Adjustments; P&P Sub Contrast Adjustment (Video) (Scon); P&P Sub Contrast Adjustment (Rf) (Scon); P&P Sub-Hue And Sub-Color Adjustment Video (Shue, Scol) - Sony KP-57WV600 Service Manual

4-1. P &P SUB CONTRAST
ADJUSTMENT (VIDEO) (SCON)
1. Receive the signal.
VIDEO 1 terminal Composite: Color-bar
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Minimum
2170P2 1 RGB : 2
3. Set to P & P mode, and receive the color bars in both main and sub
(left and right), and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN13 pin C20 (Main)
: CN13 pin A19 (Sub)
5. Select "2103-1-02" (Main scon), and adjust so that the waveform level
of VWB is 1.86 ± 0.03Vp-p.
6. Select "2103-2-02" (Sub scon), and adjust so that the waveform level
of VWB is 1.86 ± 0.03Vp-p.
7. Write the data into memory.
"MUTING" ! "ENTER"
Black
4-2. P & P SUB CONTRAST ADJUSTMENT
(RF) (SCON)
1. Receive the signal.
TV terminal RF : Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Minimum
2170P2 1 RGB : 2
3. Set to P & P mode, and receive the color bars in both main and sub
(left and right), and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN13 pin C20 (Main)
: CN13 pin A19 (Sub)
5. Select "2103-1-02" (Main scon), and adjust so that the waveform level
of VWB is 1.86 ± 0.03Vp-p.
6. Select "2103-2-02" (Sub scon), and adjust so that the waveform level
of VWB is 1.86 ± 0.03Vp-p.
7. Write the data into memory.
"MUTING" ! "ENTER"
Black
SECTION 4: CIRCUIT ADJUSTMENTS
(white-75%, 7.5% setup)
White
VWB
White
VWB
— 58 —
4-3. P & P SUB-HUE AND SUB-COLOR
ADJUSTMENT VIDEO (SHUE, SCOL)
1. Receive the signal.
VIDEO 1 terminal Composite: Color-bar
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Center
RGB : 7
3. Set to P & P mode, and receive the color bars in both main and sub
(left and right), set to service mode.
4. Connect an oscilloscope between pin
connector and ground.
5. Select "2103-1-03 SCOL, -04 SHUE" (Main), and adjust them to have
VB1 ≤ VB4 and VB2 ≤ VB3 in the waveform 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" ! "ENTER"
4-4. P & P SUB-HUE AND SUB-COLOR
ADJUSTMENT (RF) (SHUE, SCOL)
1. Receive the signal.
TV terminal : Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Center
RGB : 7
3. Set to P & P mode, and receive the color bars in both main and sub
(left and right), set to service mode.
4. Connect an oscilloscope between pin
connector and ground.
5. Select "2103-1-03 SCOL, -04 SHUE" (Main), and adjust them to have
VB1 ≤ VB4 and VB2 ≤ VB3 in the waveform 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" ! "ENTER"
KP-57WV600/57WV700/
65WV600/65WV700
(white-75%, 7.5% setup)
"
of CN702 (A board)
VB1 = VB4 ± 40mV
VB2 = VB3 ± 40mV
VB1 VB2 VB3 VB4
"
of CN702 (A board)
VB1 = VB4 ± 40mV
VB2 = VB3 ± 40mV
VB1 VB2 VB3 VB4