Sony BRC-300 Service Manual page 145

7
Does +1.5 V exist in
pin 2 of IC006 on the
DV board ?
Yes
Does D001 on the
DV board light ?
Yes
Does 27 MHz
clock exist in CL010,
and 13.5 MHz clock
in CL8057 on the
DV board ?
Yes
Does 27 MHz clock
exist in pin 4 of IC003
on the DV board ?
Yes
Are signals output
from R084 to R094
on the DV board ?
Yes
Are signals output
from R404 to R413
on the DV board ?
Yes
Are signals output
from pins 130 to 133,
135 to 138, 140, 141
of IC401 on the
DV board ?
Yes
Go to 8
(Next page)
BRC-300/300P
BRU-300/300P
DV board failure
(IC006 or the peripheral
No
circuit)
Replace the defective parts
or this unit.
DV board failure
No (IC007, IC008, or the
peripheral circuit)
Replace the defective parts
or this unit.
DV board failure
No
(Pattern disconnection of
27 or 13.5 MHz clock)
Check the pattern and
replace this unit.
DV board failure
No
(IC003 or the peripheral
circuit)
Replace the defective parts
or this unit.
DV board failure
No
(IC007, IC008, or the
peripheral circuit)
Replace the defective parts
or this unit.
DV board failure
(Pattern disconnection
No
between R228 to R237 or
R084 to R094, and IC401)
Replace the defective parts
or this unit.
DV board failure
No
(IC401 or the peripheral
circuit)
Replace the defective parts
or this unit.
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