Rf Input - Two Picture Sub Contrast Adjustment - Sony KV-30XBR910 Service Manual

4. Adjust color according to Service Mode for SHUO.
2170P-4
NO. Name
03 SCLO
04 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
4. Adjust SUB (right) side contrast according to Service Mode for SCON.
2103-2
NO. Name
02 SCON
white
VR1
(KV-30XBR910/34XBR910) = 1.60 ± 0.05 Vpp
Control Function
SUB-COLOR
SUB-HUE
VB4
VB2 VB3
Avg. Data
4
Control Function
SUB-CONT
Control Function
SUB-CONT
black
VR2
GND
VR
5. Write data from Steps 3 - 4 above, into memory.
6. Set Service Mode
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 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 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
VB1
COLOR: VB1 < VB4 (=20 ± 40 mV)
HUE: VB2 < VB3 (=20 ± 40 mV)
7. Write data into memory.
— 18 —
KV-30XBR910/34XBR910
Control Function Avg. Data
R ON
Control Function
SUB COLOR
SUB HUE
Control Function
SUB COLOR
SUB HUE
VB4
VB2 VB3
7