HBD-DZ340, HBD-DZ340K, HBD-DZ640K, HBD-DZ740 - Sony Audio Service Manual (repair manual). Page 13

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HBD-DZ340/DZ340K/DZ640K/DZ740
13
2-7.  MAIN  BOARD
qa
 three screws
     (+BV3 (3-CR))
qd
 three screws
     (+BV3 (3-CR))
qs
 three screws
     (+BV3 (3-CR))
0
 heat sink (AMP)
9
 four screws
     (+BV3 (3-CR))
8
 wire (flat type) (13 core)
 (CN5007) 
(DZ340/DZ740)
  wire (flat type) (15 core)
 (CN5006) 
(DZ340K/DZ640K)
7
 wire (flat type) (5 core)
 (CN1502)
5
 wire (flat type) (24 core)
 (CN1101)
qf
 MAIN board
2
 CN905 (9P)
1
 CN902 (5P)
3
 CN3005 (5P)
 (DZ340K/DZ640K)
4
 CN1801 (5P)
6
 CN1501 (6P)
When the heat sink 
has been removed, 
apply oil compound 
(HG-1701) to it.
Note for assembling:
 Tie wires in a bundle to avoid contact 
 with the heat sink or any part.
2-8.  POWER  BOARD
1
 screw
     (+BV3 (3-CR))
2
 two screws
     (+BV3 (3-CR))
7
 three screws
     (+BV3 (3-CR))
8
 three screws
     (+BV3 (3-CR))
9
 screw
     (+BV3 (3-CR))
3
 insulate plate (upper DH)
0
 insulate plate (lower DH)
qa
 POWER board
4
 CN901 (3P)
5
 CN902 (5P)
6
 CN905 (9P)
Note for assembling:
 Tie wires in a bundle to avoid contact 
 with the heat sink or any part.
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