Camera Block - Sony BRC-300 Service Manual

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