21L-FG1SA/SF/SM/RU
3 – 18
4. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT
No.
Adjustment point
Adjustment procedure/conditions
Waveform and others
H-VCO ADJ
(I
2
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
(MANUAL ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data
V03
.
3) Connect oscilloscope to
IC801 pin15
, adj
V03
until
freq become
15.625
±
0.15 KHz
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode.
3) Choose service data
V03
, by pressing R/C
Auto
(Hex C1)
key, OSD will appear “OK” at screen.
4) If appear “NG” pls repeat step 3.
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data
V02
.
3) Connect oscilloscope to
IC801 pin9
, adj
V02
until
voltage become
2.5
±
1 V
.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data
V02.
3) Press the R/C
Auto (Hex C1)
key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
(Manual ADJ)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data
V21
.
3) Connect oscilloscope to
TP 801,
adj
V21
until
voltage become
Min
(below 5 V).
4) After that pls adj service data
V20 & V24 same as
“V21”, V22 to “V21-1”, V23 to “V21+2”
.
(Auto Adj)
1) In No signal (RASTER) condition.
2) Go to service mode, choose service data
V21
.
3) Press the R/C
Auto (Hex C1)
key, OSD will appear
“OK” at screen.
4) If appear “NG” pls repeat step 3.
1
VIF-VCO ADJ
(I
2
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
2
S-TRAP fo
ADJ
(I
2
C BUS
CONTROL)
(AUTO &
MANUAL ADJ)
3
This adjustment must be done
after aging at least 3 minutes.
Содержание 21L-FG1RU
Страница 51: ...21L FG1SA SF SM RU 7 1 CHAPTER 7 CHASSIS LAYOUT 1 CHASSIS LAYOUT A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 52: ...21L FG1SA SF SM RU 8 1 CHAPTER 8 BLOCK DIAGRAM 1 BLOCK DIAGRAM MAIN UNIT A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 53: ...21L FG1SA SF SM RU 8 2 10 11 12 13 14 15 16 17 18 19 ...
Страница 54: ...21L FG1SA SF SM RU 8 3 2 BLOCK DIAGRAM CRT UNIT A C B D 1 2 3 4 5 6 7 8 9 10 ...
Страница 58: ...21L FG1SA SF SM RU 11 2 10 11 12 13 14 15 16 17 18 19 ...
Страница 59: ...21L FG1SA SF SM RU 11 3 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 60: ...21L FG1SA SF SM RU 11 4 10 11 12 13 14 15 16 17 18 19 ...
Страница 61: ...21L FG1SA SF SM RU 11 5 2 SCHEMATIC DIAGRAM CRT UNIT A C B D 1 2 3 4 5 6 7 8 9 10 A C B D 1 2 3 4 5 6 7 8 9 10 ...
Страница 63: ...21L FG1SA SF SM RU 12 2 2 PWB A MAIN UNIT 1 MAIN UNIT Component Side A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 64: ...21L FG1SA SF SM RU 12 3 10 11 12 13 14 15 16 17 18 19 ...
Страница 65: ...21L FG1SA SF SM RU 12 4 2 MAIN UNIT Chip Parts Side A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 66: ...21L FG1SA SF SM RU 12 5 10 11 12 13 14 15 16 17 18 19 ...