Philips BDP5500, Service Manual

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Can’t read disc or can’t open the disk door
Yes
Check the connection 4pin cable from the
main board
Can’t read disc or can’t
open the disk door
Check 45pin and 9pin
cable from main board
connection to the loader is
normal
Replace the loader
NO
GO
Check whether the
DVD loader running is
normal
Fix the connection the 45pin cable or
9pin cable.
NO
Yes
Trouble shooting chart
4-4
Check if U15(pin24)
voltage is normal (about
9.5V)
Fix FB19 or check
U14(pin3)
voltage is OK(about 12V)
NO
Check R724/R726 are normal
(the voltage between two
resistance is 1.5V
Yes
Fix
or Replace R724/R726
Yes
NO