Section 4: Circuit Adjustments; Blue Offset Adjustment; P & P Sub Contrast Adjustment (Video) (Scon); P & P Sub Contrast Adjustment (Rf) (Scon) - Sony KP-51WS510 Manual De Servicio

4-1. BLUE OFFSET ADJUSTMENT

1. Receive the all black (1080i, component) signal with VIDEO 5 input,
and set PICTURE to maximum.
2. Connect an oscilloscope between CN5
and ground.
3. Set in the service mode and select the category "2150D-2".
4. Adjust "SLIN" so that the waveform level is 2.20 ± 0.05Vpp.
5. After completing the adjustments, write the data into memory by
pressing "MUTING" "ENTER" on the remote commander.
6. Receive the RF signal and change the wide screen mode to "Wide
Zoom". Copy the same data to "SLIN".
Reference Pulse
16.7ms
GND
4-2. P & P SUB CONTRAST ADJUSTMENT
(VIDEO) (SCON)
1. Receive the signal.
TV terminal (sub) : Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main) : Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Minimum
2150P-2 1 RGBS : 2
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN5 pin
A Board : CN5 pin
5. Select "2103-1-02" (Main scon), and adjust so that the waveform level
of V is 1.55 ± 0.04Vp-p.
WB
6. Select "2103-2-02" (Sub scon), and adjust so that the waveform level
of V is 1.55 ± 0.04Vp-p.
WB
7. After completing the adjustments, write the data into memory by
pressing "MUTING" "ENTER" on the remote commander.
Black

SECTION 4: CIRCUIT ADJUSTMENTS

pin (B) on the (A board)
2.20 ± 0.05 Vp-p
White
V
WB
— 47 —
4-3. P & P SUB CONTRAST ADJUSTMENT
(RF) (SCON)
1. Receive the signal.
TV terminal (sub) : Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main) : Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Minimum
2150P-2 1 RGBS : 2
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN5
A Board : CN5
5. Select "2103-1-02" (Main scon), and adjust so that the waveform level
of V is 1.55 ± 0.04Vp-p.
WB
6. Select "2103-2-02" (Sub scon), and adjust so that the waveform level
of V is 1.55 ± 0.04Vp-p.
WB
7. After completing the adjustments, write the data into memory by
pressing "MUTING" "ENTER" on the remote commander.
Black
4-4. P & P SUB-HUE AND SUB-COLOR
ADJUSTMENT (VIDEO) (SHUE, SCOL)
1. Receive the signal.
TV terminal (sub) : Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main) : Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE : Pro
PICTURE : Maximum
COLOR : Center
2150P-2 1 RGBS : 7
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between pin
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. After completing the adjustments, write the data into memory by
pressing "MUTING" "ENTER" on the remote commander.
KP-51WS510/57WS510/65WS510
White
V
WB
of CN5 (A board) connector
VB1 VB2 VB3 VB4