DAV-DX155, DAV-DX255, HCD-DX155, HCD-DX255 - Sony Audio Service Manual (repair manual). Page 15

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15
HCD-DX155/DX255
3-7. MAIN BOARD
1
wire (flat type) 21core (CN508)
qf
wire (flat type) 23core (CN509)
wf
MAIN board
3
connector (CN1201)
7
connector
     (CN303)
ws
eight screws (+BV 3)
When re-assembling, attaching the 
two heat radiation sheets on the 
IC MAIN board first, and then attach 
the heat sink (AMP).
After twist the harness once, 
install the connector .
POWER board
MAIN board
heatsink (AMP)
radiation 
sheets
IC on the 
MAIN board
2
wire (flat type) 13core (CN507)
4
wire (flat type) 24core (CN1101)
5
wire (flat type) 7core (CN1302)
wa
two radiation
     sheets
6
wire (flat type) 13core (CN1301)
8
connector
     (CN302)
9
connector
     (CN301)
q;
connector (CN3000)
qa
connector (CN3001)
qs
connector
     (CN3002)
qd
connector
     (CN515)
qg
two screws (+BVTP 3 
×
 8)
wd
clamp
qj
HEATSINK B board
w;
heatsink (AMP)
qh
HEATSINK A board
ql
screw 
     (+BVTP 3 
×
 12)
qk
two screws 
     (+BV 3)
When re-assembling, leave 30 mm between 
harnesses A and B for safety. 
harnesses A
harnesses B
clamp
30mm
screw
lead pin
When assembling, 
clamp the three harnesses with 
a lead pin or a similar tool so 
that they do not touch this screw.
three harnesses
Ver. 1.2
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