6 Troubleshooting
6-18
DP14L*/DP15L*
6-2-16 No Video
Is heater voltage (5.9~6.3V) on
SK103’s heater Pin?
Replace it.
No
Check and replace Q604, R622.
Yes
Are D612, Q603 and R618 ok?
No
Yes
Check and replace
Q603, R618, R619.
Is 0V on Q604’s collector?
No
Yes
Check and replace
IC201.
Is 5V on IC201’s Pin 6
No
Yes
Replace IC101.
Refer to 6-2-1
No Power.
Opening BD102, is it
short between IC101’s Vcc and
ground?
No
Yes
Check signal cable connection.
Check Cont, Bright key (All max).
Is G1 voltage OK at
SK103’s G1 Pin?
Check and replace C119, D504
, D505,
Q501,
R515, R516, R517,
SK102.
Check CN103’s connection (G2).
No
Yes
WAVEFORMS
17
Desoldering SK101 and C118,
is G2 voltage ok?
Check and replace
SK101, C118
and then T501.
No
Yes
Is 12 V on IC101’s Pins 1 and 7?
No
Check and replace
IC201 and around it.
Is clamp signal on IC101’s
Pin 12?
No
Is IC101’s output on Pins 18,
21 and 23?
No
Yes
17
35.2 V (SK103, G1)
CH1 P-P = 35.2 V
CH1 RMS = 80.84 V
15
18
Содержание DP14LT
Страница 7: ...Memo 2 Product Specifications 2 4 DP14L DP15L ...
Страница 9: ...Memo 3 Operating Instructions 3 2 DP14L DP15L ...
Страница 13: ...Memo 4 Disassembly and Reassembly 4 4 DP14L DP15L ...
Страница 44: ...DP14L DP15L 7 1 7 Exploded View and Parts List 7 1 DP14L ...
Страница 45: ...7 Exploded View Parts List 7 2 DP14L DP15L 7 2 DP15L ...
Страница 46: ...DP14L DP15L 7 3 7 1 1 Front Cover CRT Ass y DP14L ...
Страница 47: ...7 1 2 Chassis Stand Ass y DP14L 7 Exploded View Parts List 7 4 DP14L DP15L ...
Страница 48: ...7 1 3 Rear Cover Ass y DP14L 7 Exploded View Parts List DP14L DP15L 7 5 ...
Страница 49: ...7 Exploded View Parts List 7 6 DP14L DP15L 7 2 1 Front Cover CRT Ass y DP15L ...
Страница 50: ...7 2 2 Chassis Stand Ass y DP15L 7 Exploded View Parts List DP14L DP15L 7 7 ...
Страница 51: ...7 2 3 Rear Cover Ass y DP15L 7 Exploded View Parts List 7 8 DP14L DP15L ...
Страница 63: ...8 Electrical Parts List 8 12 DP14L DP15L Memo ...
Страница 65: ...Memo 9 Block Diagrams 9 2 DP14L DP15L ...
Страница 67: ...11 1 DP14L DP15L MULTI MEDIA 11 Schematic Diagrams 11 1 Power Part Schematic Diagram ...
Страница 69: ...11 Schematic Diagrams 11 3 DP14L DP15L 11 2 Micom Part Schematic Diagram ...
Страница 71: ...11 Schematic Diagrams 11 5 DP14L DP15L TILT OPTION 11 3 HOR VER Part Schematic Diagram ...
Страница 73: ...11 Schematic Diagrams 11 7 DP14L DP15L 15 ONLY 11 4 H_OUT Part Schematic Diagram ...
Страница 75: ...11 Schematic Diagrams 11 9 DP14L DP15L 11 5 Video Part Schematic Diagram ...
Страница 77: ...Memo 11 Schematic Diagrams 11 11 DP14L DP15L ...
Страница 78: ...Samsung Electronics Co Ltd April 1999 Printed in Korea Code No BH68 00128A ...