DP15H*/DP17L*
5-1
5 Troubleshooting
5-1 Parts Level Troubleshooting
Notes:
1. If a picture does not appear, fully rotate the brightness and contrast controls clockwise and reinspect.
2. Check the following circuits.
• No raster appears: Power circuit, Horizontal output circuit.
• High voltage develops but no raster appears: Video output circuits.
• High voltage does not develop: Horizontal output circuits.
5-1-1 No Power Supply
Chirping noise exists?
Check and replace IC601.
Check and replace D601, FH1
Done.
No
Yes
Repeating start?
Check and replace D606.
No
Yes
IC601 Pin 1 waveform is right?
Check and replace D614, IC601,
Q602, ZD601.
Yes
No
C622 Voltage is 13 V ± 0.5V?
Check and replace IC201, IC301,
IC401, Q402, Q404.
Yes
No
Normal operation
Replace Main board.
Yes
Verify voltages.
Yes
No
WAVEFORMS
1
1
100 V (IC601, #1)
CH1 P-P = 100 V
CH1 RMS = 350.2 V
Summary of Contents for DP15HS
Page 8: ...2 Product Specifications 2 4 DP15H DP17L Memo ...
Page 35: ...6 Exploded View and Parts List 6 1 DP15HS DP15H DP17L 6 1 ...
Page 36: ...6 Exploded View Parts List 6 2 DP17LS 6 2 DP15H DP17L ...
Page 37: ...6 1 1 Front Cover CRT Ass y DP15HS 6 Exploded View Parts List DP15H DP17L 6 3 ...
Page 38: ...6 1 2 Chassis Stand Ass y DP15HS 6 Exploded View Parts List 6 4 DP15H DP17L ...
Page 39: ...6 1 3 Rear Cover Ass y DP15HS 8 Exploded View Parts List DP15H DP17L 6 5 ...
Page 40: ...6 2 1 Front Cover CRT Ass y DP17LS 6 Exploded View Parts List 6 6 DP15H DP17L ...
Page 41: ...6 2 2 Chassis Stand Ass y DP17LS 6 Exploded View Parts List DP15H DP17L 6 7 ...
Page 42: ...6 2 3 Rear Cover Ass y DP17LS 6 Exploded View Parts List 6 8 DP15H DP17L ...
Page 57: ...7 Electrical Parts List 7 15 DP15H DP17L 7 3 Different Parts List CDT ...
Page 58: ...Memo 7 Electrical Parts List DP15H DP17L 7 16 ...
Page 60: ...Memo 8 Block Diagrams 8 2 DP15H DP17L ...
Page 62: ...10 1 DP15H DP17L 10 Schematic Diagrams 10 1 SMPS Part Schematic Diagram ...
Page 64: ...10 Schematic Diagrams 10 3 DP15H DP17L 10 2 Micom Part Schematic Diagram ...
Page 66: ...10 Schematic Diagrams 10 5 DP15H DP17L 10 3 H V OSC Vertical Part Schematic Diagram ...
Page 68: ...10 Schematic Diagrams 10 7 DP15H DP17L 10 4 Deflection Part Schematic Diagram ...
Page 70: ...10 Schematic Diagrams 10 9 DP15H DP17L 10 5 Video Part Schematic Diagram ...
Page 72: ...10 Schematic Diagrams 10 11 DP15H DP17L Memo ...
Page 73: ...Samsung Electronics Co Ltd May 1999 Printed in Korea Code No BH68 00129A ...