Samsung CHA4217L Service Manual page 32

7 Troubleshooting
7-2-2 (b) Suspend Mode (H sync: OK, V sync: No)
Make sure that H sync is OK and V sync is
not. (Signal cable should be connected)
Is LED blinking? (0.5 sec toggle)
No
Are there 5V on IC202's Pin 7 (sus)
and 5V on IC202's Pin 8 (off)?
Yes
+12 V Off?
Yes
Done
7-2-2 (c) Stand-by Mode (H sync: No, V sync: OK)
Make sure that H sync is not and V sync is
OK. (Signal cable should be connected)
Is LED blinking? (0.5 sec toggle)
No
Are there 0V on IC202's Pin 7 (sus)
and 5V on IC202's Pin 8 (off)?
Yes
Is high voltage On?
Yes
Video Mute?
Yes
Done
7-8
Yes
Is OP201 OK?
Check and replace IC202.
No
Check and replace IC202.
No
Check and replace Q602, Q605, Q606.
Yes
Is OP201 OK?
Check and replace IC202.
No
Check and replace IC202.
No
Refer to 7-2-3 No Raster and
7-2-12 High Voltage Failure.
No
Refer to 7-2-16 No Video and
7-2-13 I
Yes
No
Yes
No
2
C Failure.
Check and replace
OP201, Q201.
Check and replace
OP201, Q201.
CHA42*7L/5**7L