Philips ME8 Service Manual page 28

EN 28 5. Q528.2E LA Service Modes, Error Codes, and Fault Finding
Polling every 40ms No
No
Figure 5-11 "Supply detection algorithm for DC-DC outputs" flowchart
N0
No
Shutdown ( Active to
Semistdby to standby )
Wait for 5 seconds
Restart
Figure 5-12 "Supply fault detection algorithm" flowchart
supply detection algorithms for DC-DC outputs
DETECT 1 = Low ?
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_17960_067.eps
supply fault detection algorithm
SUPPLY-FAULT = LOW for
1ms ?
Yes
DETECT1 = High ?
Yes
Error 9
SP
I_17960_068.eps
220508
220508