4-25
BRC-300/300P
BRU-300/300P
Are the pan/tilt/zoom
operations available ?
Yes
No
Is the
+
5 V and
+
3.3 V lines on the
MD board normal ?
No
Yes
3
Are the CH and
ENTER signals input
to IC5004 on the
MD board ?
One of the following is
defective.
.
Joystick
.
IC5001 or the peripheral
circuit on the MD board.
Replace above parts in
order from the top to
identify the defective part.
No
Yes
No
No
MD board failure
(IC5004 or the peripheral
circuit)
Replace the defective
parts or the MD board.
MD board failure
(
+
5 V or
+
3.3 V line, or
the peripheral circuit)
Replace the defective
parts or the MD board.
Are the
+
5 V and
+
3.3 V lines on the
MD/SW boards
normal ?
Yes
Is the signal input to
IC5004 on the MD board
after the button is
pressed ?
Yes
MD or SW board failure
(
+
5 V or
+
3.3 V line, or the
peripheral circuit)
Replace the defective
parts, or the MD or SW
board.
SW board failure
(Each switch or the
peripheral circuit)
Replace the defective
parts or the SW board.
