4-15
BRC-300/300P
BRU-300/300P
Is PS151 normal on
the DD board ?
Is the VIDEO OUT
output normal ?
Yes
Does the lens move ?
One of the following is
defective.
.
DD001 on the DD
board
.
VC board
.
IF-110 board
Check above in order
from the top to identify
the detective parts.
No
Yes
One of the following is
defective.
.
IF-110 board
.
CD board
.
Video lens
.
Prism assembly
Check above in order
from the top to identify
the detective parts.
No
Yes
Replace PS151 on the
DD board.
Are the DD001
input/output normal on
the DD board ?
Yes
No
No
Are the VIDEO AMP
outputs normal at the
_
side of C182 and at
pin 22 of IC153 on
the DD board ?
Yes
Video lens failure
Replace the video lens.
VC board failure
Replace the VC board.
Are lens iris operations
normal ?
Yes
VC board failure
Replace the VC board.
No
Are outputs normal
at pins 23, 25 of CN001
on the DD board ?
Yes
No
No
Is VIDEO output
resistor R160 normal
on the DD board ?
Yes
DD board failure
Replace the DD board.
Replace R160 on the
DD board.
No
Check the board
connections in the camera
block.
b-1
4-3. BRC-300 Camera Block
n
The FCB interface fixture board is required to check the camera block.
Connect it referring to Section 3-2-2.
b-1.
No image is output.