- 6 -
TROUBLE SHOOTING
Is there VIDEO signal
at pi n 10 3 of IC820.
NO PLAYBACK PICTURE OF COMPOSITE VIDEO OUT
NO PLAYBACK PICTURE OF S-VIDEO OUT
N
Y
Chec k CN870and peri pheral
circuit.
Is there wave form from pin
147 to pin 159 of IC 820?
Check IC130 and peripheral
circui t.
Y
N
Se lect S-VIDEO side.
S8400 is S-VI DEO side?
N
Y
Check IC820 or
change IC820.
Is there VIDEO signal at
pin 105 and 106 of IC820?
S8400 is COMPONENT
VI DEO side?
Check CN872 and peripheral
circui t.
Select COMPONENT side .
Y
N
N
Y
A
A
NO PLAYBACK PICURE OF COMPONENT
VIDEO(UK,XE:RGB) OUT
Is thereVIDEO signal at
pi n 102, 105 and 106 of
IC820?
Check CN870 and peripheral
ci rcui t.
Y
N
A
NO DI GI TA L AUDI O OUT ON PLAYBA CK
Is there waveform at
pi n 4 of IC859?
Is the volt age at pi n 5
of IC859 about 3. 3V?
Y
Check IC871 and peripheral
circui t.
N
N
Check IC851 and peripheral
circ ui t.
Y
Check IC130 and periph er al
circui t.
Is there waveform at pin
13,1 4, 15 and 16 of IC 871?
Ch eck IC800 and peripher al
circui t.
Y
N
Is there waveform at pin
13,1 4, 15 and 16 of IC 871?
Pi n 6 of IC859
is LOW?
B
C
Y
Pi n 6 of IC859
is HIGH?
B
C
NO ANALOG AUDIO OUT ON PLAYBACK
Is there AUDIO signal at
pi n 7 and 8 of IC871?
Is there waveform at pi n
1, 2 and 3 of IC871?
Y
Check IC872,Q8720, Q8820 and
peripheral
circ uit.
N
N
Ch eck IC820 and peripher al
circ uit.
Y
Check IC871 or
change IC871.
Is th er e wavefo rm at pi n
13,1 4, 15 and 16 of IC871?
Check IC800, IC820 and periph er al
circui t.
N
Y
N
Change IC859.
B
C
Y
Y
N
N
(UK,XE:RGB)
(UK,XE:RGB)