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