7 Troubleshooting
7-8
CHA42*7L/5**7L
7-2-2 (b) Suspend Mode (H sync: OK, V sync: No)
Is LED blinking? (0.5 sec toggle)
Check and replace
OP201, Q201.
Make sure that H sync is OK and V sync is
not. (Signal cable should be connected)
Yes
Are there 5V on IC202’s Pin 7 (sus)
and 5V 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
Done
7-2-2 (c) Stand-by Mode (H sync: No, V sync: OK)
Is LED blinking? (0.5 sec toggle)
Check and replace
OP201, Q201.
Make sure that H sync is not and V sync is
OK. (Signal cable should be connected)
Yes
Are there 0V on IC202’s Pin 7 (sus)
and 5V on IC202’s Pin 8 (off)?
Check and replace
IC202.
Check and replace
IC202.
No
Is OP201 OK?
Yes
No
No
Yes
Is high voltage On?
Refer to 7-2-3 No Raster and
7-2-12 High Voltage Failure.
No
Yes
Video Mute?
Refer to 7-2-16 No Video and
7-2-13 I
2
C Failure.
No
Yes
Done
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 ...