Sony BRC-300 Service Manual page 139

e-3. The RGB output sync is abnormal.
e-3
Is SYNC in the
ANALOG OUT menu
correctly set according
to the monitor ?
Yes
Are the voltages of
pins 2, 12 of IC7027
on the AN board
about +0.6 V ?
Yes
Do C SYNC signals
exist in pin 1 of
IC7019 and IC7020
on the AN board ?
Yes
AN board failure
(IC7019, IC7020, or the
peripheral circuit)
Replace the defective
part or this unit.
BRC-300/300P
BRU-300/300P
No
No
No
Set SYNC of the ANALOG
OUT menu to "G" or
"RGB", according to the
monitor.
n
When the sync and video
signals need to be input
separately, set SYNC in
the ANALOG OUT menu
to OFF, and connect the
SYNC output on this unit
to the external sync input
connector on the monitor.
AN board failure
(IC7019, IC7020, IC7027
to IC7031, or the
peripheral circuit)
Replace the defective
parts or this unit.
AN board failure
(Pattern disconnection
between pin A17 of
CN7001and pin 1 of
IC7019 and IC7020.)
Replace this unit.
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