HT-CT550W, STR-CT550WT - Sony Audio Service Manual (repair manual). Page 7

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STR-CT550WT
7
2-7.  MAIN  BOARD
2-8.  DC  FAN (M3001)
3 two screws
 (BV3)
6 five screws
 (BV3)
lead pin
7
1 connector
 (CN901)
2 fan connector
 (CN3006)
coloured line
5 eight screws
 (BVTP3 
u 8)
9 three claws
0 holder (air)
qa MAIN 
 board
MAIN board
POWER board
front side
rear side
‡:LUHVHWWLQJ
Note 3: Make sure wire 
 
do not touch 
 the 
T901.
T901
8 wire (flat type) (21 core) 
 (CN1004)
4 heat sink (AMP)
 Note 
1: When you install the heat sink (AMP),
 
 
spread the compound referring to “NOTE 
 
 
OF REPLACING THE IC3100 ON THE 
 
 
MAIN BOARD AND THE COMPLETE 
 
 
MAIN BOARD” on servicing notes (page 3).
Note 2: There should be no scratches 
 
or stains on the terminal face 
 
of the wire (flat type) (21 core).
 
The wire (flat type) (21 core) 
 
should be inserted straight and 
 
steadily with the coloured line 
 
no slanting after insertion.
 
(No tilting, no incomplete 
 insertion)
3 DC fan (M3001)
1 connector
 (CN3006)
2 two screws
 (BVTP3 
u 8)
Note 1: Mind the printing surface of the DC fan 
 
and the direction of the wire.
Note 2: Align to fit to 
 
two guide pins.
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printing surface
wire position
wire position
DC fan
(M3001)
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rear side
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