2-6.3. Rf Input - Two Picture Sub Contrast Adjustment; 2-6.4. Rf Input - Sub Hue/Sub Color Adjustment - Sony TRINITRON KV-42DRC700 Service Manual

VB1 VB2
COLOR: VB1 < VB4 (=VB1 + 0~90 mV)
HUE: VB2 < VB3 (=VB2 + 0~90 mV)
(HUE: Adjust data -2 STEP)
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).
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
Note: Use the same average data as 2-6.1., Items 3 - 4 after the
adjustment.
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
4. Adjust SUB (right) side contrast according to Service Mode for SCON.
2103-2
NO. Name
02 SCON
VB4
VB3
Avg. Data
63
0
Avg. Data
4
Avg. Data
8
Avg. Data
23
Avg. Data
23
Control Function
SUB-CONT
Control Function
SUB-CONT
VR1-VR2 = VR = 2.08 ± 0.05 Vp-p
5. Write data from Steps 3 - 4 above, into memory.
2-6.4. RF INPUT - SUB HUE/SUB COLOR
ADJUSTMENT
Preparation:
• Input a Color Bar signal to RF (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-4
NO. Name
01 RGBS
INITIAL DATA (IMPORTANT)
2150P-4
NO. Name
24 CLOF
25 HUOF
2103-1
NO. Name
01 CLEV
20 CBOF
21 CROF
2103-2
NO. Name
01 CLEV
20 CBOF
21 CROF
Note: Use the same average data as 2-6.2., Items 3-6 after the
adjustment.
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.
— 15 —
white
VR1
black
VR2
GND
Control Function Avg. Data
PICTURE
COLOR
Control Function Avg. Data
R ON
Control Function Avg. Data
OFFSET for UCOL
OFFSET for UHUE
Control Function Avg. Data
CB & CR-OUT
CB-OFFSET
CR-OFFSET
Control Function Avg. Data
CB & CR-OUT
CB-OFFSET
CR-OFFSET
Control Function Avg. Data
SUB COLOR
SUB HUE
KV-42DRC700
63
31
7
8
4
20
31
31
19
31
31
Adjust
Fix: 8