Sony SWF-BR100 Service Manual page 39
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Also See for SWF-BR100:
- Operating instructions manual (24 pages) ,
- Operating instructions manual (16 pages) ,
- Operating instructions manual (36 pages)
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Flow of subwoofer internal analysis: POWER board
There is no defective (harness
floating, come out contact pin,
pin bent etc.) to harness
connecting on the CN104 on
the MAIN board and CN901 on
the POWER board.
Defect is
not exist
The fuse (F900) on the
POWER board is not damaged.
Not damaged
The voltage of the following pin
is 4 V (for system controller).
POWER board:
CN901 pin 9 (E4V)
Yes
The voltage of the following pin
is 32 V (for power amplifier).
POWER board:
CN901 pin 1, 3, 4 (32V)
Yes
There are no defective with
voltage of each parts of
POWER board based on
schematics.
Defect is
not exist
Refer to "Flow of subwoofer
internal analysis: MAIN board"
on page 4.
Defect is
exist
Repair the harness or replace
the harness.
Damaged
Replace the fuse (F900) on the
POWER board.
Replace the sub power
No
transformer (T901) and D950
on the POWER board.
No
The power control signal of the
following pin is 3.3 V.
POWER board:
CN901 pin 8 (MAIN_ON)
Yes
Defect is
exist
Replace the defective parts
or the POWER board.
No
Refer to "Flow of subwoofer
internal analysis: MAIN board"
on page 4.
SWF-BR100
3
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