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5 Troubleshooting
PN22N*
5-9
5-1-16 No Video
IC101 Pin 1, 3 and 5
inputs are right?
IC101 Pin 17, 21 and 23
outputs are right?
Check I
2
C bus and +12 V line.
Yes
Yes
No
Check D_SUB and BNC.
No
IC102 Pin 2, 6 and 11
outputs are right?
Check +12 V line.
Check and replace IC102.
Yes
No
Cathode DC levels are right?
Check +80 V line.
Check and replace IC150.
Yes
No
G2 voltage is right?
Check G2 wire,
CRT Socket board and FBT.
Change CRT.
Yes
Done.
No
Check signal cable and connection.
34
46
37
34
IC101 #1, 3, 5
CH1 RMS =3.475V
37
IC101 #17, 21, 23
CH1 RMS = 1.969 V
46
IC102, #2, 6, 11
CH1 RMS = 2.896 V
WAVEFORMS
Summary of Contents for PN22N series
Page 2: ...Samsung Electronics Co Ltd October 2000 Printed in Korea P N BH68 00362A 01 ...
Page 18: ...Memo 4 Alignment and Adjustments 4 8 PN22N ...
Page 38: ...PN22N 6 1 6 Exploded View and Parts List PN22N ...
Page 39: ...Memo 6 Exploded View Parts List 6 2 PN22N ...
Page 40: ...PN22N 6 Exploded View and Parts List 6 1 Front Cover CRT Ass y 6 3 ...
Page 41: ...6 2 Chassis Stand Ass y 6 Exploded View Parts List 6 4 PN22N ...
Page 42: ...6 3 Rear Cover Ass y 6 Exploded View Parts List PN22N 6 5 ...
Page 83: ...Memo 8 Block Diagrams 8 2 PN22N ...
Page 84: ...9 Wiring Diagram PN22N 9 1 9 Wiring Diagram ...
Page 87: ...10 Schematic Diagrams 10 3 PN22N 10 3 D Convergence Purity Part Schematic Diagram ...
Page 93: ...10 Schematic Diagrams 10 9 PN22N 10 7 Purity Parts Schematic Diagram ...
Page 97: ...10 Schematic Diagrams 10 13 PN22N 10 9 DSP USB Part Schematic Diagram ...