Picture Quality Adjustments; Sub Hue/Col Adjustments - Sony TRINITRON KV-DR34M97 Service Manual

KV-DR34M97
RM-991

6-3. PICTURE QUALITY ADJUSTMENTS

Adjustment condition
1. Set to service mode.
2. Set picture mode to HI-FINE.
3. Set the following condition.
ECO MODE
WIDE MODE
DRC-MF
3D-NR
Input signal : Video Color Bar
RF Color Bar
MEASUREMENT POINT
A board CN4301
1
5
CAUTION
After Adjustment, these adjustment parameters must be
recovered to the original condition.
Original Condition
SAJ 00
50 TV
0E CLO 06
1O HUO 05
6-3(1). DRIVE ADJUSTMENT (VIDEO MODE)
(i) SUB CONTRAST (PAL)
Input signal : PAL Color bar (100%) to Video
Picture : HI-FINE mode
Condition : SAJ
SAJ
JGL
Adjusting parameter:
YCT
(ii) SUB CONTRAST (NTSC)
Input signal : NTSC Color Bar (75%) to Video
Picture : HI-FINE mode
Condition: SAJ
JGL
Adjusting parameter :
YCT
6-3(2). DRIVE ADJUSTMENT (RF MODE)
(i) SUB CONTRAST (PAL)
Input signal : PAL Color bar (100%) to Video
Condition : SAJ
SAJ
JGL
Adjusting parameter:
YCT
: OFF
: OFF
: DRC1250
: ON
R-OUT
B-OUT
PIC 28 HI-FINE
50 VIDEO 60 TV 60 VIDEO
08 09 09
03 07 06
00 PIC 3F
02 COL 00
01 RGB 04
04 SCT
00 PIC 3F
02 COL 00
01 RGB 04
04 SCT
00 PIC 3F
02 COL 00
01 RGB 04
04 SCT
(ii) NTSC (RF MODE)
Input signal : NTSC Color Bar (75%) to Video
Condition: SAJ
SAJ
JGL
Adjusting parameter :
YCT
VR
VR1 - VR2 = ∆VR = 2.35 ± 0.07 (Vp-p) (PAL)
(∆VR = 1.85 ± 0.07 (Vp-p)-For NTSC)
6-4. SUB HUE/COL ADJUSTMENT
6-4(1). SUB HUE/SUB COL (VIDEO MODE)
Input signal : NTSC Color bar (75%)
Picture : HI-FINE mode
Condition : SAJ
SAJ
SAJ
SAJ
Adjusting parameter:
YCT
YCT
6-4(2). SUB HUE/SUB COL (NTSC RF MODE)
Input signal : NTSC Color bar (75%)
Condition : SAJ
SAJ
SAJ
SAJ
Adjusting parameter:
YCT
YCT
NTSC
VB1 VB2 VB3 VB4
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
6-4(3). SUB COLOR ADJUSTMENT (PAL RF MODE)
(Except NTSC models)
Input signal : RF PAL Color bar (100%)
Picture : HI-FINE mode
Condition : SAJ
SAJ
SAJ
SAJ
JGL
Adjusting parameter:
YCT
PAL
VB1 VB2 VB3 VB4
– 36 –
00 PIC 3F
02 COL 00
01 RGB 04
04 SCT
VR2
GND
00 PIC 3F
02 COL 1F
10 HUO 05
0E CLO 04
03 SCL
00 TNT
00 PIC 3F
02 COL 1F
10 HUO 05
0E CLO 04
03 SCL
00 TNT
VB4
00 PIC 3F
02 COL 1F
0E CLO 04
10 HUO 05
01 RGB 07
03 SCL
VB2 = VB3 = VB4