4-23
BRC-300/300P
BRU-300/300P
Is the mode switch
correctly set ?
Are the power supply
voltages of the MD board
(
+
5 V,
+
3.3 V) normal ?
Yes
Is the fuse F5001 on the
MD board normal ?
Connect correctly the FFC
between the MD and SW
boards.
No
Yes
SW board failure
(Each LED or the
peripheral circuit)
Replace the defective
parts or the SW board.
No
MD board failure
(IC5002, IC5003, or the
peripheral circuit)
Replace the defective
parts or the MD board.
Yes
Set correctly the mode
switch according to the
camera.
Is the FFC between
the MD and SW boards
correctly connected ?
Yes
FFC: Flexible flat cable
Replace the fuse F5001
on the MD board.
No
No
Are the power supply
voltages of the SW board
(
+
5 V,
+
3.3 V) normal ?
SW board failure
(+5 V or +3.3 V line, or the
peripheral circuit)
Replace the defective
parts or the SW board.
No
Is the LED control
signal output from IC5004
on the MD board ?
Yes
MD board failure
(IC5004 or the peripheral
circuit)
Replace the defective
parts or the MD board.
No
Yes
d-1
4-5. RM-BR300
4-5-1. Trouble when Power-on the Unit
d-1.
The LED does not light after power-on.