4-36
BRC-300/300P
BRU-300/300P
Does approx. 18 MHz
clock exist in R509
on the DV board ?
Does approx. 18.1 MHz
clock exist in L302
on the DV board ?
Yes
Is 27 MHz clock
output from X301
on the DV board ?
No
Yes
No
DV board failure
(IC303, L302, or the
peripheral circuit)
Replace the defective parts
or this unit.
Yes
Does approx. 24.6 MHz
clock exist in R513
on the DV board ?
Yes
No
No
Are signals output
from pins 5, 6 and 7,
8 of L503 on the DV board
when this unit is connected
to a DV device ?
(Differential, amplitude:
approx. 220 mV)
Are signals output
from RB401 on the
DV board when this unit
is connected to a
DV device ?
No
Yes
DV board failure
(IC506, L503, or the
peripheral circuit)
Replace the defective parts
or this unit.
Yes
DV board failure
(IC401, IC506, or the
peripheral circuit)
Replace the defective parts
or this unit.
No
8
DV board failure
(IC502, IC503, X501, or the
peripheral circuit)
Replace the defective parts
or this unit.
DV board failure
(X301 or the peripheral
circuit)
Replace the defective parts
or this unit.
DV board failure
(IC504, IC505, X502, or the
peripheral circuit)
Replace the defective parts
or this unit.
DV board failure
Check CN501, and replace
CN501 or this unit.
Are signals output
from pins 132 to 139,
141 to 148 of IC206
on the DV board ?
No
Yes
DV board failure
(IC206, IC207, or the
peripheral circuit)
Replace the defective parts
or this unit.
