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Service Modes, Error Codes, and Fault Finding
Polling every 40ms
No
Figure 5-10 "DC-DC output control" flowchart
N0
No
Shutdown ( Active to
Semistdby to standby )
Wait for 5 seconds
Restart
Figure 5-11 "Supply fault detection" flowchart
supply detection algorithms for DC-DC outputs
DETECT 1 = Low ?
No
Yes
Check DETECT1 5 times
( within 500us )
Yes
DETECT 1 = Low ?
5 consecutive times ?
Shutdown ( Active to
Semistdby to standby )
Wait for 5 seconds
Restart
I_18010_074.eps
supply fault detection algorithm
SUPPLY-FAULT = LOW for
1ms ?
Yes
DETECT1 = High ?
Yes
Error 9
SP
I_18010_075.eps
110608
Q522.3E LA
5.
110608
EN 23
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