2-6.2. Video Input - Sub Hue/Sub Color Adjustment; 2-6.3. Rf Input - Sub Contrast Adjustment - Sony TRINITRON KV-27HS420 Service Manual

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 (Full) (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 an oscilloscope to Pin 5 of CN9001 (B. DRV) on the CH
Board.
3. Adjust color according to Service Mode for SCLO.
4. Adjust color according to Service Mode for SHUO.
2103-1
NO. Name
03 SCOL
04 SHUE
VB1
COLOR: VB1 < VB4 (=20mV ± 200 mV)
HUE: VB2 < VB3 (=20mV ± 200 mV)
5. Press MUTING then ENTER to write into memory.
KV-27HS420/29DRC420/30HS420/32HS420/34HS420/36HS420
Avg. Data
7
4
Control Function
SUB-COL
SUB-HUE
VB4
VB2 VB3
KV-27HS420/29DRC420/30HS420/32HS420/34HS420/36HS420
2-6.3. RF INPUT - SUB CONTRAST
ADJUSTMENT
Preparation:
• Input a Color Bar signal to RF (75 IRE 75%).
• Set picture mode: Single (Full) (PRO MODE).
• Picture: Max
• Color: Min
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 CH
Board.
3. Adjust contrast according to service mode for SCON.
2103-1
NO. Name
02 SCON
white
VR1
(27HS/29HS) = 1.84 ± 0.05 Vpp
(30HS) = 1.92 ± 0.05 Vpp
(32HS) = 1.92 ± 0.05 Vpp
(34HS) = 1.92 ± 0.05 Vpp
(36HS) = 2.00 ± 0.05 Vpp
4. Press MUTING then ENTER to write into memory.
Avg. Data
4
Control Function
SUB-CONT
black
VR2
GND
VR
18