LG 21FS4RLX Service Manual page 10

(3) VL (Vertical Linearity)
Adjust so that the boundary line between upper and lower
half is in accord with geometric horizontal center of the
CPT(PAL : E5ch., NTSC : US-13.).
(4) VA (Vertical Amplitude)
Adjust so that the circle of a digital circle pattern may be
located within the effective screen of the CPT.
? ?
? ?
? ?
? ?
? ? NTSC signal : Adjust NTSC 13CH circle as an inscribed
? W & ? h e ? ?
? ' 6 X e ? * @ ? e W 2 ( ? f ?
? V ' ) X ? ? V ' ? ? W & ( Y ? f ? V ' ) X f W & ( Y g ?
? V ' ) X ? ? W & ( Y ? g ? V ' ) K O & ( Y h ?
W - X ? ? V ' @ @ ( Y ? ? W - X f ?
& @ ) ? e ? @ @ ? e ? & @ ) f ? ? W & @ @ ) X ? h ?
W & ( M I ' ) X h ?
? W & ( Y ? ? V ' ) X ? g ? W & ( Y f V ' ) X g ?
? W & ( Y ? ? W & ? ? V ' ) X ? f ? ? & 0 Y e ? * @ ? e V 4 ) ? f ?
? V ' ? h e ? ?
? ?
? ?
? ?
circle of vertical outer boundary of the effective screen of
the CPT.
(5) HS (Horizontal Shift)
Adjust so that the vertical center line of a digital circle
pattern is in accord with geometric vertical center of the
CPT
? @ @ ?
? @ @ ?
(6) EW (Horizontal Width)
Adjust to that a digital circle pattern looks like exact
circle.(PAL:0~25%,NTSC: 2.5~3.0)
Factual picture size
PAL Digital Pattern(EU05CH)
<Fig. 3> Cross-Hatch Pattern
(7) EP (East-west Parabolar)
Adjust so that middle portion of the outermost left and right
vertical line looks like parallel with vertical lines of the CPT.
(8) ET (East-west Trapezium)
Adjust to make the length of top horizontal line same with it
of the bottom horizontal line.
(9) EW UPCOR & EW LOCOR
Adjust until symmetrize upper&lower coner of the screen.
UPCOR
LOCOR
<Fig. 4> Cross-Hatch Pattern(NTSC:US 9CH,PAL:E-7CH)
(10) BOW
Adjust the left and right crooked line on upper and lower
side.
Copyright©2007 LG Electronics.Inc. All right reserved.
Only for training and service purposes.
Adjust Point
<Fig. 2 >
Factual picture size
NTSC Digital Pattern(US13CH)
EW PARAB
(11) H ANGLE
Adjust the vertical slope
(12) S CORRECT (S CORRECTION)
Adjust the receive Patter, keep the lattice's range
same(Top/Center/Bottom)
? ?
? ?
? ?
? ?
? ? This decided by DY data,so according to the CPT's Default
? W & ? h e ? ?
? ' 6 X e ? * @ ? e W 2 ( ? f ?
? V ' ) X ? ? V ' ? ? W & ( Y ? f ? V ' ) X f W & ( Y g ?
? V ' ) X ? ? W & ( Y ? g ? V ' ) K O & ( Y h ?
W - X ? ? V ' @ @ ( Y ? ? W - X f ?
& @ ) ? e ? @ @ ? e ? & @ ) f ? ? W & @ @ ) X ? h ?
? W & ( Y ? ? V ' ) X ? g ? W & ( M I ' ) X h ?
W & ( Y f V ' ) X g ?
? W & ( Y ? ? W & ? ? V ' ) X ? f ? ? & 0 Y e ? * @ ? e V 4 ) ? f ?
? V ' ? h e ? ?
? ?
? ?
? ?
data(Initial data) Setting.
(13) V SCROLL
Adjust the center vertical line of the geometrical with the
CPT center vertical line same.
(14) V ZOOM (fixed) : VERTICAL ZOOM.
(15) WBR (fixed) : Timing of wide Blanking
(16) WBF (fixed) : Timing of wide Blanking
(17) V SYNSLI (fixed) : Vertical slicing level
(18) OVRVOLIN (fixed) : Over voltage input mode
(19)V GUARD (fixed) : Vertical guard mode
8. initial data for deflection
<Table 4> Initial data for deflection by model (SERVICE 2)-PAL
Description
Item
V SLOPE Vertical slope
V SHIFT Vertical shift
V LINEAR Vertical linearity
V AMPLIT Vertical amplitude
H-SHIFT Horizontal shift
EW WIDTH EW width
EW PARAB Parabola adj
EW TRAPE Trapezoid adj
EW UPCOR Upper corner adj
EW LOCOR Lower corner adj
H BOW Bow
H PARALL Horizontal parallelogram
SCORRECT S correction
V SCROLL Vertical scroll
V ZOOM Vertical zoom
WBR Timing of wide Blanking
WBF Timing of Wide Blanking
V SYNSLI Vertical slicing level
OVRVOLIN Over voltage input mode
V GUARD Vertical guard mode
? ?
? ?
? ? ?
? ? After PAL50Hz adjustment for Pal mode,NTSC60Hz apply
? ?
? ?
O 2 @ 6 K ? h ?
W 2 @ @ @ @ @ 6 X ? g ? 7 @ @ @ @ @ @ @ 1 ? g ?
? 7 @ @ @ @ @ @ @ @ @ 1 g ? ? J @ @ @ @ @ @ @ @ @ L g ?
? @ @ @ @ @ @ @ @ @ @ @ g ?
? 3 @ @ @ @ @ @ @ @ @ 5 g ? ? N @ @ @ @ @ @ @ @ @ H g ?
3 @ @ @ @ @ @ @ 5 ? g ?
V 4 @ @ @ @ @ 0 Y ? g ? I 4 @ 0 M ? h ? ?
? ?
? ?
? ?
? ?
deflection redress data,but you need confirm the
adjustment condition in NTSC System again,if it is no
good,you need readjust it in NTSC mode.
- 10 -
21"S-SLIM
21"FLAT
Adjust
or not
50Hz 60Hz 50Hz 60Hz
15 16 24 18 YES
48 45 48 40 YES
43 44 43 33 YES
29 31 19 44 YES
30 35 34 31 YES
46 52 46 35 YES
25 36 25 24 YES
19 23 19 28 YES
35 50 35 44 YES
46 53 46 48 YES
34 35 YES
35 35
26 37 32 28 YES
36 35 36 30 NO
27 21 21 21 Adjust
if need
25 25 25 25 NO
2 2 2 2 NO
2 2 2 2 NO
0 0 0 0 NO
0 0 0 0 NO
1 0 1 1 NO
LGE Internal Use Only