Picture Quality Adjustments; 2-6.1. Video Input - Two Picture Sub Contrast Adjustment; 2-6.2. Video Input - Sub Hue/Sub Color Adjustment - Sony TRINITRON KV-32HS20 Service Manual

2-6. PICTURE QUALITY ADJUSTMENTS

Preparation:
• Set PRO MODE (Picture: MAX, GAMMA: 0)
• Dynamic-color: Off (=Trinitron: MID).
• Set the service mode to the following:
C2150P-4
NO. Name Control Function
06 UDCL Dynamic Color: OFF
08 UGRAM GRAMMA
15 DCTR DC-TRAN
16 DPIC DYNAMIC PIC: OFF
1. Input signal (480i):
• Color Bar Video 75IRE (White) 75% modulation 7.5% Set-up
• Color Bar RF 75IRE (White) 75% modulation 7.5% Set-up
2-6.1. VIDEO INPUT - TWO PICTURE SUB
CONTRAST ADJUSTMENT
Preparation:
• Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
• Set picture mode: P&P (PRO MODE).
1. Set to service mode and adjust as follows:
2150P-4
NO. Name Control Function
00 UPIC PICTURE
02 UCOL COLOR
2150P-2
NO. Name Control Function
01 RGBS R ON
INITIAL DATA (IMPORTANT)
2150P-4
NO. Name Control Function
23 SCON SUB-CONT
2103-1
NO. Name Control Function
00 YLEV Y-OUT
2103-2
NO. Name Control Function
00 YLEV Y-OUT
2. Connect oscilloscope to Pin 1 of CN9001 (R.DRV) on the C Board
3. Adjust MAIN (left) side contrast according to service mode fro SCON.
2103-1
NO. Name
02 SCON
4. Adjust SUB (right) side contrast according to service mode for SCON.
Avg. Data
0
0
0
0
Avg. Data
63
0
Avg. Data
4
Avg. Data
9
Avg. Data
23
Avg. Data
23
Control Function
SUB-CONT
KV-32HS20/36HS20/36HS20H/32XBR450/36XBR450/36XBR450H
2103-2
NO. Name
02 SCON
32": VR1-VR2 = VR = 1.92 ± 0.05 Vp-p
36": VR1-VR2 = VR = 2.00 ± 0.05 Vp-p
5. Write data from steps 3 and 4 above, into memory.
2-6.2. VIDEO INPUT - SUB HUE/SUB COLOR
ADJUSTMENT
Preparation:
• Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
• Set picture mode: P&P (PRO MODE).
1. Set to service mode and adjust as follows:
2150P-4
NO. Name
00 UPIC
02 UCOL
2150P-2
NO. Name
01 RGBS
2. Connect an oscilloscope to pin 5 of CN9001 (B. DRV) on the C Board.
3. Adjust MAIN (left) side color according to service mode for SCOL.
4. Adjust MAIN (left) side color according to service mode for SHUE.
2103-1
NO. Name
03 SCOL
04 SHUE
5. Adjust SUB (right) side color according to service mode for SCOL.
6. Adjust SUB (right) side color according to service mode for SHUE.
2103-2
NO. Name
03 SCOL
04 SHUE
COLOR: VB1 < VB4 (=VB1 + 0~90 MV)
HUE: VB2 < VB3 (=VB2 + 0~90 MV)
(HUE: Adjust data - 2 STEP)
7. Write data into memory.
— 13 —
Control Function
SUB-CONT
white
VR1
black
VR2
GND
Control Function Avg. Data
PICTURE
COLOR
Control Function Avg. Data
R ON
Control Function
SUB-COL
SUB-HUE
Control Function
SUB-COL
SUB-HUE
VB4
VB1 VB2 VB3
63
31
7