6 Troubleshooting
DP14L*/DP15L*
6-15
Are C417, C504, D502, D503, R509
and R510 ok?
Yes
Check and replace it.
No
Symptoms 2: – X-ray protection
– One vertical line and then high voltage shut down.
Check and replace
D407, D408,
D414, Q402, Q504, IC401.
Check and replace
IC201.
Is 5 V on IC401’s Pin 32 and
IC203’s Pin 8?
Check and replace it.
No
Yes
Is there data communication on
IC401’s Pins 30 and 31?
No
Yes
Is there data communication
on IC401’s Pins 30 and 31 during
I
2
C function? (H/V Posi, V_Size,
S_Pin, Trap, Cont, Bright)
Check I
2
C data and clock line.
Check and replace I
2
C devices.
(IC201, IC203, IC401)
No
Yes
Done
14
14
6-2-13 I
2
C Failure
– Almost data (Horizontal drive duty, FBT B+ duty, display image data, color data) is transferred
from IC201 to IC203 and IC401 through I
2
C data line during power on.
– After user adjusts display image data, contrast and brightness data, these are saved to IC203.
Key check (6-2-18)
WAVEFORMS
14
5.92 V (IC203, #5, 6)
CH1 P-P = 5.92 V
CH1 RMS = 3.812 V
CH1 : IC401’s Pin 31
CH2 : IC401’s Pin 30
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 ...