Service manual

BD-HP90U
4 – 2
Flowchart 3
Flowchart 4
No audio from the coaxial digital terminal.
Is there the digital audio signal output at TL7295? NO Check Pin 3 of J7202. Replace this parts as required.
YES
Check IC7208 and its peripheral circuits. Replace any of them as
required.
Failure to update the software even with the USB memory in its terminal. Or BD-LIVE malfunctioning.
Replace the USB mem-
ory and check again the
updating. Does the USB
system function?
YES
USB memory defective.
NO
Is the 5V voltage applied
to Pin 1 of J1201?
NO
Is the 5V output fed to
Pin 1 of IC7207?
NO
Is the voltage at Pin 4 of
IC7207 at high level?
NO
Check IC7208 and its periph-
eral circuits. Replace any of
them as required.
YES YES YES
Check IC7208 and its
peripheral circuits.
Replace any of them as
required.
Check P1202, P7202,
connection cables and
soldering condition.
Replace any of them as
required.
Is the 5V voltage applied
art Pin 5 of IC7207?
NO
Check IC7208 and its periph-
eral circuits. Replace any of
them as required.
YES
Check IC7207 and its
peripheral circuits.
Replace any of them as
required.