JVC AV-21VT14 Service Manual page 23

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4.7.6 DEFLECTION CIRCUIT ADJUSTMENTS
• The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
• When performing deflection circuit adjustment, adjusts PAL signal (fv: 50 Hz) in 4:3 mode and 16:9 mode respectively, and adjust
the NTSC signal (fv: 60 Hz) similarly.
Note:
Proceed to the following adjustment after having completed the adjustments of SUB BRIGHT and SUB PICTURE.
4. DEF
Adjustment item
1. V-SHIFT
2. V-SLOPE
3. V-SIZE
4. H-CENT
5. H-SIZE
6. TRAPEZ
7. EW-PIN
8. COR-UP
9. COR-LO
10. ANGLE
11. BOW
12. V-S.CR
13. V-LIN
14. V-ZOOM
15. V-SCROLL
NOTE: The value with an asterisk * is variable for adjustment. The values in parenthesis (
COMPRESS: OFF (4:3)
Item
V. SLOPE Signal
adjustment generator
Remote
control unit
V. POSITION Signal
adjustment generator
Remote
control unit
Variable range
4:3
50Hz
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
Measuring
Test point
instrument
A
B
Digitized in Heiloo Netherland
Others
50Hz
-32 ~ +31 +32
-32 ~ +31 +32
-32 ~ +31 +38
-32 ~ +31 +32
-32 ~ +31 0
-32 ~ +31 0*
-32 ~ +31 0
-32 ~ +31 0*
-32 ~ +31 0*
-32 ~ +31 +32
-32 ~ +31 +32
-32 ~ +31 +32
-32 ~ +31 +32
-32 ~ +31 (+30)
-32 ~ +31 (+32)
Adjustment part
[4. DEF] - PAL V. SLOPE -
2. V-SLOPE (1) Receive a PAL circle pattern signal of vertical
(2) Select 4. DEF from the SERVICE MENU.
(3) Select 2. V-SLOPE.
(4) Set the initial setting value of 2. V-SLOPE.
(5) Adjust 2. V-SLOPE to make "A = B".
(6) Press the [DISPLAY] key twice to return to
- NTSC V. SLOPE -
Blanking
(1) Receive a NTSC circle pattern signal of vertical
line
(2) Make similar adjustment of NTSC V-SLOPE in the
[4. DEF] - PAL V. POSITION -
1. V-SHIFT (1) Receive a PAL circle pattern signal of vertical
(2) Select 1. V-SHIFT.
(3) Set the initial setting value of 1. V-SHIFT.
(4) Adjust 1. V-SHIFT to make "A = B".
- NTSC V. POSITION -
(1) Receive a NTSC circle pattern signal of vertical
(2) Make similar adjustment of NTSC V. POSITION in
Initial setting value
4:3 COMPRESS (16:9)
60Hz 50Hz
0* 0*
0* 0*
0* -14
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0* 0*
0 -13
(0) (0)
) are fixed values.
Description
frequency 50Hz.
SERVICE MENU screen.
frequency 60Hz.
same way as for "PAL V-SLOPE".
frequency 50Hz.
frequency 60Hz.
the same way as for "PAL V. POSITION".
7/23/2017
60Hz
0*
0*
0
0*
0*
0*
0*
0*
0*
0*
0*
0*
0*
+3*
(0)
(No.YA140)1-23