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-61HS20 - 61" Projection Tv Service Manual

4-1. P & P SUB CONTRAST ADJUSTMENT
(VIDEO) (SCON)
1. Receive the signal.
TV terminal (sub) : no signal
VIDEO terminal (main) : color-bar signal
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 pin 3 of CN703 (A board)
and ground.
5. Select " 2103-1-02 ", and adjust so that the waveform level
of VR is 2.00 0.05Vp-p.
6. Select " 2103-2-02 ", and adjust so that the waveform level
of VR is 2.00 0.05Vp-p.
7. Write the data into memory.
MUTING n ENTER
VR1-VR2=VR
VR2
Fig. 4-1
4-2. P & P SUB CONTRAST ADJUSTMENT (RF)
(SCON)
1. Receive the signal.
TV terminal (main) : color-bar signal
VIDEO terminal (sub) : no signal
2. VIDEO MODE : Pro
PICTURE : Max imum
COLOR : Min imum
RGB Signal : off
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between pin 3 of CN703 (A board)
and ground.
5. Select " 2103-1-02 ", and adjust so that the waveform level
of VR is 2.00 0.05Vp-p.
6. Select " 2103-2-02 ", and adjust so that the waveform level
of VR is 2.00 0.05Vp-p.
7. Write the data into memory.
MUTING n ENTER
VR1-VR2=VR
VR2
Fig. 4-1
SECTION 4

CIRCUIT ADJUSTMENTS

White
VR1
Pedestal
White
VR1
Pedestal
– 31 –
KP-43HT20/53HS20/53HS30/61HS20/61HS30
RM-Y908 RM-Y908
4-3. P & P SUB-HUE AND SUB-COLOR ADJUSTMENT
(SHUE, SCOL)
1. Receive the signal.
TV terminal (sub) : no signal
VIDEO terminal (main) : color-bar signal
2. VIDEO MODE
PICTURE
COLOR
HUE
Signal
3. Set to P & P mode, set to service mode.
4. Connect an oscilloscope between pin 3 of CN702 (A board)
connecter and ground.
5. Select " 2103-1-03 SCOL, -04 SHUE ", and adjust them to
< =
have VB1 VB4 and VB2 VB3 in the waveform levels.
6. Select " 2103-2-03 SCOL, -04 SHUE ", and adjust them to
< =
have VB1 VB4 and VB2 VB3 in the waveform levels.
7. Write the data into memory.
MUTING n ENTER
Fig. 4-3
4-4. P & P SUB-HUE AND SUB-COLOR ADJUSTMENT
(SHUE, SCOL)
1. Receive the signal.
TV terminal (main) : color-bar signal
VIDEO terminal (sub) : no signal
2. VIDEO MODE
PICTURE
COLOR
HUE
Signal
3. Set to P & P mode, set to service mode.
4. Connect an oscilloscope between pin 3 of CN702 (A board)
connecter and ground.
5. Select " 2103-1-03 SCOL, -04 SHUE ", and adjust them to
< =
have VB1 VB4 and VB2 VB3 in the waveform levels.
6. Select " 2103-2-03 SCOL, -04 SHUE ", and adjust them to
< =
have VB1 VB4 and VB2 VB3 in the waveform levels.
7. Write the data into memory.
MUTING n ENTER
Fig. 4-4
RM-Y908 RM-Y908
: Pro
: maximum
: center
: +4 steps
: off
< =
< =
VB1 VB2 VB3 VB4
: Pro
: maximum
: center
: +4 steps
: off
< =
< =
VB1 VB2 VB3 VB4
RM-Y908