CKE5507L/LM
7-1
7 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, H/V control circuit, and H/V output circuit.
• High voltage develops but no raster appears: Video output circuits.
• High voltage does not develop: Horizontal output circuits.
7-1 No Power
Does proper AC 90-264 Volts
appear between the positive and
negative poles of C606?
Check F601 and L602.
Check D604~D607, IC602, T601,
OP601, and power circuit.
Yes
No
Check IC301 and its
related circuits
Check the power supply circuits
(D616)
Check the power supply circuits
(D608)
7-2 Horizontal Line on CRT
Does DC 13 V appear at
Pin 2 of IC301?
Does DC -11 V appear at
Pin 4 of IC301?
Yes
No
No
Replace IC301 or check its
related circuits
(D301, IC301 and R312)
Does the output pulse of
48 Vp-p appear
at Pin 5 of IC301?
Yes
Yes
No
WAVEFORMS
13
38.8 V (IC301, #5)
CH1 P-P = 38.8 V
CH1 RMS = 4.26 V
13
Содержание CKE5507L
Страница 2: ...Samsung Electronics Co Ltd March 1998 Printed in Korea Code No BH68 61035A ...
Страница 10: ...Memo 3 Product Specifications 3 4 CKE5507L LM ...
Страница 24: ...Memo 6 Alignment and Adjustments 6 10 CKE5507L LM ...
Страница 34: ...Memo 8 Exploded View Parts List 8 4 CKE5507L LM ...
Страница 50: ...Memo 9 Electrical Parts List 9 16 CKE5507L LM ...
Страница 52: ...Memo 10 Block Diagrams 10 2 CKE5507L LM ...
Страница 53: ...CKE5507L LM 11 1 11 PCB Diagrams 11 1 Main PCB Bottom View ...
Страница 54: ...11 PCB Diagram 11 2 CKE5507L LM 11 2 Video PCB Bottom View ...
Страница 56: ...Memo 11 PCB Diagram 11 4 CKE5507L LM ...
Страница 58: ...12 Wiring Diagram 12 2 CKE5507L LM Memo ...
Страница 59: ...13 Schematic Diagrams CKE5507L LM 13 1 13 1 Power Part Schematic Diagram ...
Страница 60: ...13 Schematic Diagrams 13 2 CKE5507L LM 13 2 Micro Part Schematic Diagram ...
Страница 61: ...13 Schematic Diagrams CKE5507L LM 13 3 13 3 H V Part Schematic Diagram ...
Страница 62: ...13 Schematic Diagrams 13 4 CKE5507L LM 13 4 Video Part Schematic Diagram ...
Страница 64: ...Memo 13 Schematic Diagrams 13 6 CKE5507L LM ...