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5-3. PICTURE QUALITY ADJUSTMENTS
-H-TRAPIZIUM ADJUSTMENT
1. Input a cross hatch/dot signal.
2. Adjust DAC 4 HTR to make H-Trapizoid distortion best.
SUB CONTRAST, SUB HUE, SUB COLOR
Adjustment condition
SAJ
JGL
PICTURE QUALITY : HI-FINE
ECO MODE
WIDE MODE
DRC-MF
INPUT SIGNAL
Video Color Bar (White and Color 75%)
RF Color Bar (White and Color 75%)
MEASUREMENT POINT
VR ; R100 (the pin 6 of CN1100 at A board)
VB ; B100 (the pin 7 of CN1100 at A board)
CAUTION
After the above Adjustment, these adjustment parameters must be
recovered to the original condition.
Original condition
SAJ
SAJ
OE CLO
10 HUO
13
JGL
http://cxema.ru
00
PIC
3F
06
DYC
0
0E
CLO
6
10
HUO 7
13
PIO
0
04
BBT
0
05
LML 3
: OFF
: OFF
: DRC1250
00
PIC 28
HI-FINE
06
DYC 0
HI-FINE
50 TV
50 VIDEO
60 TV
9
8
9
8
8
9
PIO
TWIN = 7
04
BBT 3
05
LML 0
1. NTSC VIDEO INPUT
Input signal ; NTSC color bar, 75% to Video 1.
[TWIN] mode, [Service] mode.
(i) SUB CONTRAST
Condition :
Adjusting parameter:
(ii) SUB HUE/SUB COL
Condition :
Adjusting parameter:
60 VIDEO
9
9
– 61 –
SAJ
00
PIC
02
COL
JGL
01
RGB
SAJ
13
PIO
LEFT
;
YCT
08
RIGHT ;
SYC
08
VR1
VR2
VR1 - VR2 = 1.85 ± 0.07 (Vp-p)
SAJ
02
COL
JGL
01
RGB
SAJ
10
HUO 7
LEFT
;
YCT
0A
YCT
00
RIGHT ;
SYC
0A
SYC
00
VB1 VB2 VB3
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
KV-ES34M81/ES34M91
RM-916
3F
0
4
0
YOL
YOL
GND
1F
7
COL
TNT
COL
TNT
VB4
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