Sony MDX-C7890R Service Manual ▷ View online
– 9 –
Note:
Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
FRONT PANEL
COVER ASS’Y, PANEL (SUB) ASS’Y
1
Push the button (release).
2
3
Remove the front panel of the arrow.
3
four screws
(PTT2.6
(PTT2.6
×
6)
3
screw
(PTT2.6
(PTT2.6
×
6)
1
1
2
cover ass’y
4
panel (sub) ass’y
– 10 –
MECHANISM DECK (MG-164KT-138)
MAIN BOARD
1
two screws
(PTT2.6
(PTT2.6
×
4)
2
mechanism deck
(MG-164KT-138)
(MG-164KT-138)
5
insulating sheet
4
main board
3
three screws
(PTT2.6
(PTT2.6
×
6) (ground point)
1
two screws
(PTT2.6
(PTT2.6
×
10)
2
heat sink
1
eight screws
(PTT2.6
(PTT2.6
×
10)
– 11 –
SERVO BOARD
FLOAT BLOCK
3
two screws
(BVTT2
(BVTT2
×
4)
1
sensor flexible board
(CN102)
(CN102)
3
two screws
(BVTT2
(BVTT2
×
4)
2
flexible board
(CN103)
(CN103)
4
servo board
3
spring (FL2)
1
four screws
(BVTT2
(BVTT2
×
4)
Release of the lock.
float block
A
5
Pushing an arrw
A
part, raise
the float block up ward at the
front to release a lock.
front to release a lock.
3
spring (FL2)
2
MD cover ass’y
4
two springs (FL)
lever (lock R)
lever (lock L)
lever (lock L)
– 12 –
OPTICAL PICK-UP (KMS-241A/J2N)
HOLDER ASS’Y
4
washer (M)
5
holder ass’y
1
spring (CHKG)
2
stop ring E (1.5)
3
lever (lock R)
3
lever (lock L)
2
stop ring E (1.5)
1
spring (CHKG)
6
bearing (SL)
5
feed screw ass’y
3
screw
(K2
(K2
×
3)
2
shaft (SL2)
1
two screws
(K2
(K2
×
3)
7
optical pick-up
(KMS-241A/J2N)
(KMS-241A/J2N)
4
screw
(B2
(B2
×
3)
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