5 Troubleshooting
PN22N*
5-3
5-1-3 H_Deflection Failure
Q403 Drain waveform is right?
Check R403, D416 and +210 V line.
Yes
No
Q404 Gate
waveforms are right?
Check Q404 and R415.
Check +80 V line.
Yes
No
Q405 collector
waveforms are right?
Check and replace D410 and Q405.
Check DY connector connection.
Yes
No
Check some parts around
QS202 and QS203.
ICS202 Pin 26
waveform is right?
Check some parts around ICS202.
Yes
No
WAVEFORMS
20
21
23
14
14
ICS 202 #26
CH1 RMS = 8.88 V
21
Q404 Gate
CH1 RMS = 7.67 V
23
Q405 Collector
CH1 RMS =353.2 V
20
Q403 Drain
CH1 RMS = 188.4 V
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 ...