7 Troubleshooting
CHA42*7L/5**7L
7-5
7-1-7 Poor Focus
Improved Focus?
Aging monitor and check focus
change for 1~2 hours.
Check Focus lead from FBT to
CRT Socket.
Adjust Focus VR.
No
Yes
Are the CRT Socket and
connection OK?
Replace and connect it.
Check and replace CRT.
Yes
Yes
No
7-1-8 Purity Failure
Degaussing
Is purity OK?
Done
No
Yes
IS degaussing circuit OK?
Refer to 7-2-19 Degaussing Failure.
Yes
No
Check if there is strong
electric or magnetic fields near
user’s circumstance?
Recommend free electric or
magnetic field.
No
Yes
Change CRT and readjust
misconvergence and color.
Summary of Contents for CHA4217L
Page 2: ...Samsung Electronics Co Ltd August 1998 Printed in Korea Code No BH68 61127A ...
Page 10: ...Memo 3 Product Specifications 3 4 CHA42 7L 5 7L ...
Page 14: ...5 Disassembly and Reassembly 5 2 CHA42 7L 5 7L Memo ...
Page 62: ...9 Electrical Parts List 9 14 CHA42 7L 5 7L Memo ...