Samsung DVD-P191 Service Manual page 31

Samsung Electronics
No tray open/close
Is the power 5V
for deck ok ?
Yes
Is MIC1-9, 10
Output OK ?
Yes
Is voltage from
DIC1-64 (close)
and DIC1-63 (open)
ok ?
Yes
Change the DIC1 or MIC1
No
Check Power
No
Check MIC1 peripheral circuit
Refer to a pattern
image of Table 4-8
No
Check DIC1 peripheral circuit
Refer to a pattern
image of Table 4-7
Trouble Shooting
4-13