EasyManua.ls Logo

Hitachi MX-W50 - TAPE DECK SECTION ADJUSTMENTS; Tape Speed and Azimuth Adjustment

Hitachi MX-W50
44 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
TAPE
DECK
SECTION
@
Adjustments
points
SPEAKERS
TERMINAL
MX-W50
MAIN
P.W.B.
REC/PLAY
OUTPUT
LEVEL
ADJ.
PLAYBACK
GAIN
ADJ.
TAPE
2
HIGH-SPEED
ADJ.
TAPE
1
NORMAL-SPEED
ADu.
RT4
T405
§
RT404
TAPE
t
HIGH-SPEED
ADJ.
06
R
TAPE
2
RT401L
(S|
RT407
RT402L
RT402R
RT403L
TP401L
ate
RT401R
TP401R
NORMAL-SPEED
ADJ.
BIAS
CURRENT
ADJ.
Fig.
23
@
Instruments
to
be
used
1.
Audio
oscillator
2.
Electronic
voltmeter
3.
Attenuator
4.
Frequency
counter
@
Jigs,
Test
and
Check
Tapes
Head
mounting
jig
400
Hz,
Dolby
alignment
tape
10
kHz,
azimuth
alignment
tape
3,000
Hz,
tape
speed
alignment
tape
Mirror
tape
(for
tape
running
check)
NORMAL
tape
(MAXELL
UDI
90)
CHROME
tape
(MAXELL
UDII90)
METAL
tape
(MAXELL
MX46)
@
Position
of
knob
Match
the
position
of
switch
to
this
shown
in
the
table
following
unless
otherwise
specified.
Dolby
NR
switch
OFF
Open
the
cassette
door
and
then
clean
the
heads,
pressure
rollers
and
capstans
using
alcohol,
then
perform
adjustment
according
to
the
following
procedure.
OW
ON
1.
Tape
Speed
Adjustment
Note:1
Always
adjust
the
tape
speed
in
order
of
(1)
to
(2).
If
adjustment
is
made
in
reverse
order,
the
High-speed
will
be
change.
Note:2
For
Normal-Speed,
High-Speed,
switchover
use
the
Micro-computer
Test
Program.
HEADPHONES
JACK
3x
Micro-computer
Test
Program
The
Micro-computer
Test
is
carried
as
follows;
While
depressing
the
STOP
button
and
the
FF
button
of
TAPE
1,
insert
the
power
cord
into
a
power-outlet
socket.
While
in
PLAY
mode,
Normal-Speed
and
High-Speed
are
vatied
by
pressing
the
Play
button.
If
the
power
is
turned
off
the
Micro-computer
Test
Program
is
cancelled.
(1)
Normal-speed
Tape
Adjustment
value
|
Adjustment
point
Tape
speed
+10
RT405
(TAPE
1)
3,000
Hz
—0
RT407
(TAPE
2)
(2)
High-speed
Tape
Adjustment
value;
Adjustment
point
Tape
speed
+20
RT404
(TAPE
1)
6,000
Hz
—0
RT406
(TAPE
2)
Adjustment
Procedure
Connect
the
frequency
counter
to
the
LINE
OUT
temninals
and
apply
heat-run
for
20
minutes
or
more.
Then,
pliyback
the
alignment
tape
in
TAPE
1
and
TAPE
2
and
adjust
thee
tape
speed
at
the
middle
of
the
tape.
Note:
Speed
difference
between
TAPE
1
and
TAPE
2;nould
be
within
1%.
2.
Azimuth
Adjustment
of
Recording/Playback
Head
Tape
Adjustment
value
|
Adjustment
jcsint
Azimuth
align-
:
Azimuth
adjusrment
Maximum
output
ment
tape
screw
Alignment
tape
Alignment
tape

Table of Contents

Related product manuals