15
15-1
15-2
14EM4RU
21EM4RU
TROUBLE SHOOTING TABLE
NO RASTER
Blown out.
Replace the fuse.
Check IC701, D701 and
C705.
The fuse is again blown out.
Does horizontal circuit
oscillate ?
Check Q752 and IC801.
D1001 (Power LED Red
dimly) turns on or turns
ON/OFF.
Check T701 pin (11) voltage
(Approx. 310V at 220V AC)
Check F701.
Check Secondary Main+B
(Approx. 130V)
Check CRT connector
K1-K5 bias.
Check
C878.
Check
IC801.
Checking the
protector circuit.
Check R618 and R619.
D1001 (Power LED Red
brightly) turns on.
Check D751
Check R701 and R707
Содержание 14EM4RU
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Страница 23: ...23 14EM4RU 21EM4RU BLOCK DIAGRAM CRT UNIT BLOCK DIAGRAM 14EM4RU CRT UNIT BLOCK DIAGRAM 21EM4RU ...
Страница 24: ...24 14EM4RU 21EM4RU BLOCK DIAGRAM MAIN UNIT 14EM4RU ...
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Страница 28: ...28 14EM4RU 21EM4RU BLOCK DIAGRAM HEADPHONE UNIT BLOCK DIAGRAM ...
Страница 30: ...30 14EM4RU 21EM4RU A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 MAIN UNIT 14EM4RU SCHEMATIC DIAGRAM ...
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Страница 32: ...32 14EM4RU 21EM4RU MAIN UNIT 21EM4RU A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
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Страница 34: ...34 14EM4RU 21EM4RU A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 CRT UNIT 14EM4RU CRT UNIT 21EM4RU ...
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Страница 38: ...38 14EM4RU 21EM4RU PWB A MAIN UNIT Chip Parts Side A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
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