Philips DVD625 Service Manual page 23

Diagnostic Software, Trouble Shooting and Test Instructions
C
Track on OK?
Y
Disk is READY?
Y
Audio signal normal?
Y
IR,VFD display
and Key fuction
ok?
Y
END
Signal TEO
(pin21 of MT1336)
N
normal?
Y
Signa TRSO
(pin13 of MT1379)
normal?
Y
Signa l
T+ & T-
normal?
Y
Check the connection
between OPU and BA5945
N Check RF Signal
Audio DAC receive
N
correct data?
Y
Output signal are
correct?
Y
Check the circuit of
filter, Amplify, and mute
etc.
IR, PT6312
communicate with
N
MT1379 OK?
Y
check Remote Contriol
check KEY matrix
Check connection of VFD
DVD625 /0x1 5.
Check MT1336 and its
N
peripheral circuit.
Check the TRSO connection
N between MT1379 (pin13) and
MT1336 (pin26)
Check MT1336 and its
N
peripheral circuit.
Check connection between
N
MT1379 and Audio DAC
Check Audio DAC and i t s
N
periperal circuit
Check connection between
N MT1379 and PT6312 and its
periperal circuit
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