Technics SU-VX720 - Component Removal and Replacement; Power IC, AC Inlet, and Capacitor Block Removal; Power Transformer Removal and Main PCB Check

SU-VX720
SU-VX720
Ref.
No.
Ref.
No.
Removal
of
the
AC
INLET/VOLT
:
|
|
15
|
Removal
of
the
power
{tC
:
16
|
ADJ.
PCB.
|
.
|
|
tt the, ween
Claws ; 5. Reinstall the remote switch controller to the switch.
} ; | Procedure | ; Wain eaus oe }
| 3. Remove tne botlom board assy. Siete IT gS |
| 1 peels ! 1-12-16 | : 4. Reinstail tne front pane! ass’y to the main P.C.B. and piace the continues > |
96
447-4
(ee
|
unit
as
snown
right.
[Le
Man
PCB.
|
12—13—14-15 ' |
Li :
oO
|
AC
inlet
cover
YA
AA
AC
INLET/VOLT
ADJ.
P.C.B.
GD Gk?
|
|
| 1. Unsoider the power IC. |
{ 2, Remove the 2 screws (@. @).
| eWhen mounting the power IC and heat sink, apply silicon
Procedure 0008
1—>18
Front pane!
thermal
compound
(RFKX0002
or
equivalent)
to
the
rear
of
the
1,
Remove
the
1
screw
(@).
:
ass'y
power IC. 2. Release the 2 claws of AC iniet cover.
. No. : . No.
es . Removal of the capacitor block ii oe Removal of the power transformer
| Procedure eREPLACEMENT OF THE FOOT
1—17
Heat Melted Posts
1. Remove the 4 heat melted posts on the bottom board ass’y with a pair of
nippers or similar tool.
2. To replace the foot (RKAQ053-A) on the bottom board ass’y, melt the
4 posts with a soldering iron.
Foot
Bottom
Board
Ass'y
Soldering
iron
Capacitor
block
Foot
(RKA0053-A)
CN702A4/CN702B
1. Remove the 1 flat cable (CN702A/CN702B).
2. Remove the 5 screws (Q~@). a
1. Remove the 1 connector (CN701).
2. Remove the 2 screws (@. @).
3. Release the 2 claws.
peas Check of the main P.C.B.
Procedure
1— 2-319
Rear panel
| 1. Remove the 4 screws (@~@). 2. Remove the 9 screws (Q@~@®).
10
aa