Sony BRC-300 Service Manual page 114
3ccd color video camera / optical multiplex unit
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Also See for BRC-300:
- Command list (23 pages) ,
- Specifications (8 pages) ,
- Brochure & specs (8 pages)
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a-3.
The STANDBY lamp blinks.
PAN/TILT reset is incorrect.
Eliminate the cause, and
press the PAN-TILT
RESET button of the
SIRCS remote
commander to perform
PAN/TILT reset.
Check the PAN/TILT
mechanical units to
identify the defective part.
One of the following is
defective.
. FFC between CN1802
(SY board) and CN803
(CC board)
. CC board PH001 or the
peripheral circuit
Check above in order from
the top to identify the
defective part.
One of the following is
defective.
. FFC between SY board
and DR board
. FFC between DR board
and SE board
. SE board PH2151 or the
peripheral circuit
Check above in order from
the top to identify the
defective part.
4-4
a-3
Are PAN/TILT
operations blocked
externally ?
Yes
No
Do PAN/TILT
No
mechanical blocks
operate normally ?
Yes
Does the clock
(+3.3 V TTL level)
No
exist in pins 33, 113
of IC1019 on the SY
board when the PAN
motor rotates ?
Yes
Does the clock
(+3.3 V TTL level)
No
exist in pins 34, 114
of IC1019 on the SY
board when the TILT
motor rotates ?
Yes
Go to 1
(Next page)
FFC: Flexible flat cable
No
No
Are PAN motor and
TILT motor rotating ?
Yes
Does the unit
correctoly operate after
the PAN/TILT reset ?
Yes
Does the clock
(+3.3 V TTL level)
exist in pins 12, 13 of
CN1002 on the
Does the clock
(+3.3 V TTL level)
exist in CL1018, CL1023
on the SY board ?
End
No
SY board ?
Yes
No
Yes
Go to a-4
SY board failure
(IC1019 or the
peripheral circuit)
Replace the defective
parts or the SY board.
BRC-300/300P
BRU-300/300P
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