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Aiwa HD-S1 Service Manual page 3

Digital audio tape recorder
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DISASSEMBLY
INSTRUCTIONS — 1
l."Pane!,
Top", "Panel,
Bottom" and "Lid, Cassette" Removal
(See Figure-i)
1) Remove 2 ((©)) screws and then the "Lid, Cassette" in
the direction of the arrow.
2) Remove 4 (QQ) screws and then "Panel, Top".
3) Remove 6 (@ x4.
@ x2
screws and then the "Panel,
Bottom".
Note} The rear of "Panel, Top" is fixed by double-sided
adhesive tape. Be careful that "Panel, Top" is not
bent when removing it.
2. "MD ASSY" Removal
(See Figure-2)
1) Remove 2 (@)) screws.
2) Insert a "Sheet" as shown in the figure.
3) Remove the "MD ASSY" in the direction of the arrow
while pushing the "Cassette Box ASSY" as shown in the
figure.
Note) Be sure to insert the "Sheet" as shown in the figure
when removing and reinstalling the "MD ASSY".
Otherwise, the screen and the "LCD of the MD ASSY"
come into contact, causing damage.
0. 2at
3. "Main Circuit Board" Resoval
(See Figure-3)
1) Unsolder point ® of the "Connect Circuit Board".
2) Unsolder point (@) of the Shield Paper.
3) Remove 4 (@)X3, @X1) screws, disconnect 6
connectors and then remove the "Yain Circuit Board".
Note 1) The "PREAMP and Main Circuit Boards" are connected
via connectors.
Disconnect
the connectors,
taking
care of both boards.
Note 2) The "Flexible Circuit Boara" is likely to be cut.
Be sure to disconnect
the 5 connectors first and
then remove the "Main Circuit Board".
Main Circuit Board
PREAMP Circuit
Fig-1
Fig-3
4. "Mechanism ASSY" Removal
(See Figure-4)
1) Unsolder the "Shield Paper" and disconnect the
connector from the "Drum",
2) Remove 2 ((®)) screws and the "PREAMP Circuit Board".
3) Remove 2 (@)) screvs and the "2 RECOG Switches".
4) Remove 4 (©) screws and then the "Mechanism ASSY" in
the direction of the arrow,
Note} Be careful of the wires when removing the "Mechanism
ASSY".
Cassette Box ASSY
e
Shield Paper
ge
Connector
PREAMP Circuit Board
—— oie
Fig-4
Fig-2

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