4-20
BRC-300/300P
BRU-300/300P
Check the sync setting
of this unit.
No
Is the EXT SYNC IN
connector normal ?
(No noise)
Yes
MC board failure
(IC3001, IC3002, IC3009,
or the peripheral circuit)
Replace the defective
parts or the MC board.
External sync
Internal sync
No
Is the input sync
signal according to the
system of this unit ?
(NTSC/PAL)
Yes
Input the sync signal
according to the
system of this unit
(NTSC/PAL).
Remove the noise from
the EXT SYNC IN
connector, or connect
nothing to it.
Then check again.
If normal, check the
input system again.
c-4
c-4.
The power indicator lights, but the video output sync is abnormal.