![Sharp 21K-FD5RU Скачать руководство пользователя страница 25](http://html.mh-extra.com/html/sharp/21k-fd5ru/21k-fd5ru_service-manual_373480025.webp)
21K-FD5RU
3 – 22
10. SECAM CHROMA ADJUSTMENT
11. SIF (NICAM / IGB) ADJUSTMENT (NICAM OR IGB MODEL ONLY)
NO
ADJUSTMENT POINT
ADJUSTMENT CONDITION / PROCEDURE
WAVEFORM OR OTHERS
1 VCO COIL
(1) Receive "PAL COLOUR BAR" signal.
T2300
(2) Connect DC Voltmeter to Main Board socket
SC304 pin 1
.
(3) Check and turn T2300 counter-clockwise (Left) so that DC voltmeter appear 0V,
then turn it clockwise (Right) so that DC voltmeter appear 5V.
After that , turn
T2300
counter-clockwise (Left) until DC voltmeter appear
2.5 ± 0.1 Vdc
** UNIT BOARD ADJUSTMENT
Vcc
5 ± 0.1 Vdc
IF Input Freq
38.9 MHz ± 10 KHz
Adjust T2300 until TP 2300 (NICAM Board Test Point) become 2.5 ± 0.1 Vdc.
Check after assembly NICAM BOARD
Test point:
Main Board socket SC304 pin 1
Preset selected reception freq (AFT OFF)
Check Voltage 2.5 ± 0.1 Vdc
Precaution: The Vcc, fo and other factors are considered in the unit board of the
1.0 V tolerance which differ from the adjustment accuracy
Содержание 21K-FD5RU
Страница 21: ...21K FD5RU 3 18 2 ADJUSTMENT 1 PIF ADJUSTMENT CHECKING 2 PURITY ADJUSMENT ...
Страница 22: ...21K FD5RU 3 19 3 CONVERGENCE ADJUSTMENT 4 H VCO VIF VCO S TRAP for ADJUSTMENT ...
Страница 27: ...21K FD5RU 3 24 15 FUNCTION OPERATION CHECKING 2 VIDEO AUDIO CONTINUED ...
Страница 29: ...21K FD5RU 3 26 19 SHOCK TEST CHECKING 20 ROM CORRECTION CHECKING N O 0 90 0 90 584 N O 0 90 0 90 584 ...
Страница 58: ...21K FD5RU 5 1 TV 21K FD5RU Service Manual 21K FD5RU Market E CHAPTER 5 TROUBLE SHOOTING 1 TROUBLE SHOOTING ...
Страница 59: ...21K FD5RU 5 2 TROUBLE SHOOTING Continued pin 11 pin 13 of SC304 ...
Страница 60: ...21K FD5RU 5 3 TROUBLE SHOOTING Continued I I I I ...
Страница 62: ...21K FD5RU 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 64: ...21K FD5RU 8 2 10 11 12 13 14 15 16 17 18 19 ...
Страница 66: ...21K FD5RU 8 4 4 BLOCK DIAGRAM NICAM UNIT A C B D 1 2 3 4 5 6 7 8 9 10 ...
Страница 70: ...21K FD5RU 11 2 3 SCHEMATIC DIAGRAM NICAM UNIT A C B D 1 2 3 4 5 6 7 8 9 10 ...
Страница 71: ...21K FD5RU 11 3 4 SCHEMATIC DIAGRAM MAIN UNIT A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 72: ...21K FD5RU 11 4 10 11 12 13 14 15 16 17 18 19 ...
Страница 74: ...21K FD5RU 12 2 10 11 12 13 14 15 16 17 18 19 ...
Страница 75: ...21K FD5RU 12 3 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 76: ...21K FD5RU 12 4 10 11 12 13 14 15 16 17 18 19 ...
Страница 96: ...www s manuals com ...