Service Points - Hitachi HT-L55 Serviceanleitung

HITACHI HT-155
SERVICE POINTS
1.
Removing Control
PWB
(Figs. 1
and 2
I
Remove
6 screws @
and remove
bottom plate
Next, remove 8 screws
@and
the
1
1
P
connector
2.
Removing
microswitch (Power
Source) (Fig. 2)
After
removing
bottom plate,
remove
screw @
(1
screw) and then the fìxing
plate.
3.
Removing
DD
Motor
(Fig.3)
After
removing
bottom plate and control
PWB,
re-
move
4 screws @
(Note)
There
are adjusting screws
@ at
2
positions
on
the
DD
motor,
and
these
are fixed
by
screw
locks. As the screws are
already adjusted,
do
not
turn them by mistake.
4.
Removing Linear Mechanism
(Fig.
a)
Remove
5 screws @
and,
after
removing
the dust
cover,
remove
2 screws
@.
5. Removing Pick-up (Fig.5)
(1)After removing the bottom plate,
remove
the
sol-
dering
on
the phono
lead
wires
(2) Remove
the dust
cover,
turn the worm by
hand
and move the tone arm about 5 cm inward.
(3) Remove 1 screw @, remove the rail and and
remove
the spring from the
wire connection
part.
6. Removing Wire
(1)After
removing
the tone
arm,
cating
1
screw @(Fig.5).
(2)
When
assembling,
wind
the
Fig.
6.
(Note)
remove
the wire
lo-
wire as
shown
in
When winding
the wire
on
care above and
below the wire.
7.
Replacing Cartridge
lnterchangeable
with
ordinary
available on the market.
the
gear pulley,
take
plug-in
(1
)Turn
the
power ON, press
ARM
move tone arm slightly inwards.
(2)Turn
the power
OFF and open
dust
cover.
(3) Remove cartridge
fixing
screws
with a
small
screw-
driver and, holding
the tone arm, gently pull
the
car-
tridge
out
(Fig.
7)
8.
Replacing Stylus
Press
ARM
lN
button, move
tone arm
slightly
in-
wards and
proceed
as
in Fig 8.
Stylus
DS-ST33
can play about
8OO
-
1
500
LP sides before
re-
placement is required.
type
cartridges
lN
button
and
Flg.2
Abb.2
Fis.3
Abb.3
-3-