7 Troubleshooting
CHA42*7L/5**7L
7-7
Is LED blinking? (1 sec toggle)
Check and replace
OP201, Q201.
Make sure that there is No H/V sync
from signal generator. (Signal cable
should be connected)
Yes
Are there 5V on IC202’s Pin 7 (sus)
and 0V on IC202’s Pin 8 (off)?
Check and replace
IC202.
Check and replace
IC202.
No
Is OP201 OK?
Yes
No
No
Yes
+12 V Off?
Check and replace
Q602, Q605,
Q606.
No
Yes
+6.3 V line Off?
Check and replace
Q603, Q604.
Done
No
Yes
7-2-2 DPMS Failure
7-2-2 (a) Off Mode (No H/V sync)
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 ...