6 Troubleshooting
DP14L*/DP15L*
6-19
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
15
18
Refer to 6-2-15 ABL Failure.
Yes
Yes
Check 70 V line.
Is 70 V on IC103’s Pin 4?
No
Is IC103’s output on Pins 1,
2 and 3?
No
16
Replace IC103.
Yes
Yes
Check again cont, bright key.
6.3 V line, G1, G2 line.
Is it ok?
Are there waveforms on SK103’s
R, G, B?
Yes
Disconnect Video PCB from CRT neck.
Yes
No
Replace IC101.
6-2-16 No Video Continued
Are ther waveforms on
SK103’s R, G, B?
Check and replace
SK103
and
CRT.
No
Yes
Check and replace Q101R, Q101G,
Q101B, Q102R, Q102G, Q102B,
D103R, D103G, D103B and
PCB pattern.
19
WAVEFORMS
15
3.16 V (IC101, #21)
CH1 P-P = 3.16 V
CH1 RMS = 1.008 V
16
43.2 V (IC103, #3)
CH1 P-P = 43.2 V
CH1 RMS = 63.56 V
18
5.60 V (IC101, #12)
CH1 P-P = 5.60 V
CH1 RMS = 4.908 V
19
46.4 V (SK103, G)
CH1 P-P = 46.4 V
CH1 RMS = 38.16 V
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 ...