Picture Quality Adjustments; 2-6.1. Video Input - Sub Contrast Adjustment; 2-6.2. Video Input - Sub Hue/Sub Color Adjustment; 2-6.3. Rf Input - Two Picture Sub Contrast Adjustment - Sony TRINITRON KV-30HS510 Service Manual

2-6. PICTURE QUALITY ADJUSTMENTS

Preparation:
• Set PRO MODE (Reset).
1. Input signal (480i Composite):
• Color Bar Video 75 IRE (White) 75% modulation 7.5% Set-up.
• Color Bar RF 75 IRE (White) 75% modulation 7.5% Set-up.
2-6.1. VIDEO INPUT - SUB CONTRAST
ADJUSTMENT
Preparation:
• Input a Color Bar signal to VIDEO 1 (75 IRE 75%).
• Set picture mode: Single (PRO MODE Reset).
• Picture: Max
1. Set to Service Mode and adjust as follows:
2170P-2
NO. Name Control Function
01 RGBS R ON
2. Connect oscilloscope to Pin 1 of CN9001 (R.DRV) on the C Board.
3. Adjust contrast according to the service mode item: SPIO.
2170-P4
NO. Name
04 SPIO
white
VR1
(KV-30HS510) = 1.67 ± 0.05 Vpp
4. Write data from Step 3 above, into memory.
Avg. Data
4
Control Function
SUB-CONT
black
VR2
GND
VR
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: Single (PRO MODE Reset).
• Picture: Max
1. Set to Service Mode and adjust as follows:
2170P-2
NO. Name
01 RGBS
2. Connect an oscilloscope to Pin 5 of CN9001 (B. DRV) on the C Board.
3. Adjust color according to Service Mode for SCLO.
4. Adjust color according to Service Mode for SHUO.
2170P-4
NO. Name
05 SCLO
06 SHUO
VB1
COLOR: VB1 < VB4 (=20 ± 40 mV)
HUE: VB2 < VB3 (=20 ± 40 mV)
7. Write data into memory.
2-6.3. RF INPUT - TWO PICTURE SUB
CONTRAST ADJUSTMENT
Preparation:
• Input a Color Bar signal to RF (75 IRE 75%).
• Set picture mode: P&P (PRO MODE).
• Picture: Max
1. Set to Service Mode and adjust as follows:
2170P-2
NO. Name Control Function
01 RGBS R ON
2. Connect an oscilloscope to Pin 1 of CN9001 (R. DRV) on the C Board.
3. Adjust MAIN (left) side contrast according to service mode for SCON.
2103-1
NO. Name
02 SCON
— 17 —
Control Function Avg. Data
R ON
Control Function
SUB-COLOR
SUB-HUE
VB4
VB2 VB3
Avg. Data
4
Control Function
SUB-CONT
KV-30HS510
7