Teac X-1000M User manual
TEAC
SERVICE
MANUAL
X-1000M/X-1000
|
Stereo
Tape
Deck
X-
1000
HI
SREF
VCH,
dbx
noise
reduction
system
made
under
license
from
dbx,
In-
corporated.
The
word
dbx
and
the
dbx
Symbol
are
trademarks
of
dbx,
incorporated.
4
Parts
marked
with
this
sign
are
safety
critical
components.
They
must
always
be
replaced
with
identical
components
—
refer
to
the
appropriate
parts
list
and
ensure
exact
replacement.
Effective:
DECEMBER,
1982
A20252
X-1000M/X-1000
1
SPECIFICATIONS
AND
SERVICE
DATA
SPECIFICATIONS
Track
System
X-1000M:
2
track,
2
channel
stereo
or
mono
4
track
playback
switchable
X-1000:
4
track,
2
channel
stereo
or
mono
Head
System
X-1000M:
4
heads:
erase,
record,
2T
playback
and
4T
playback
X-1000:
3heads:
erase,
record,
playback
Reel
Size
10-%”"
and
7”
Tape
Speed
X-1000M:.
38cm/s
(15
ips)
and
19cm/s
(7-%
ips)
X:1000:
19cm/s
(7-%
ips)
and
9.5cm/s
(3-%
ips)
inputs
(level
and
impedance)
:
MIC:
Specified
input
level:
Min.
input
level:
LINE
IN:
Specified
input
level:
Min.
input
level:
Outputs
(level
and
impedance)
OUTPUT:
Specified
output
level:
—5dB
(436mV)/10kohms
Max.
output
level:
+1dB
(0.869V)
PHONES:
Specified
output
level:
—24dB
(48.9mV)/8ohms
Playback
equalization
—60dB
(0.775mV)/10kohms
—70dB
(245:V)
—12dB
(195mV)/50kohms
—22dB
(61.5mV)
“LH”
tane
“EE”
tape
38cem/s:
3,
180us
+
50us
3,180us
+
35us
00
+
35us
(IEC)
19cm/s:
3,180us
+
50us
3,180us
+
35us
9.5cm/s:
3,180us+
90us
3,180us
+
50us
Motors
Capstan
motor:
FG
servo
DC
motor
Reel
motor:
2
DC
slotless
motors
Bias
Frequency
100kHz
©
Power
Requirements
100/120/220/240V,
AC
50/60Hz
110W
(General
export
model)
220V
AC
50Hz,
110W
(Europe
model)
240V
AC
50Hz,
110W
(U.K./Australia
model)
120V
AC
60Hz,
110W
(U.S.A./Canada
model)
Weight
22.0kg
(48-8/16
Ibs)
net
:
26kg
(57-5/16
Ibs)
(with
wooden
case)
Dimensions
See
Fig.
1-1
on
page
3.
SERVICE
DATA
MECHANICAL
Tape
Speed
Deviation
3,000Hz
+
30Hz
Tape
Speed
Drift
15Hz
Wow
and
Fiutter
Playback:
38cm/s:
0.04%
(WRMS),
0.08%
(RMS)
19cm/s:
0.05%
(WRMS),
0.10%
(RMS)
9.5cm/s:
0.07%
(WRMS),
0.12%
(RMS)
Record/Playhack:
§
38cm/s:
0.10%
(RMS)
19cm/s:
0.12%
(RMS)
9.5cm/s:
0.15%
(RMS)
Pinch
Roller
Pressure
1.35kg
~
1.9kg
(3.0
Ibs
~
4.2
Ibs)
Tape
Tension
Play
mode:
Take-up:
50g
+
10g
(1.402
~
2.102)
Supply:
50g
+
10g
(1.402
~
2.102)
Fast
winding
made
Take-up:
110g
+10g
(3.50z
~
4.202)
Supply:
Brake
Torque
Forward
direction:
1.2
~
1.9kg-cm
(17
~
260z-inch}
[X-1000M]
1.2
~
1.7kg-cm
(17
~
2402-inch)
[X-1000]
0.7kg-cm
(9.702-inch)
cr
less
[X-1000M]
0.6kg-cm
(8.30z-inch)
or
less
[X-1000]
Left/right
deviation:
0.2kg-cm
(2.80z-inch)
or
jess
Fast
Winding
Time
100
seconds
or
less
for
550m
(1800
feet)
Pitch
Control
Standard
tape
speed
+6%
or
more
TIMER
Activate
Time
4
sec.
+
2
sec.
Reverse
direction:
ELECTRICAL
Frequency
Response
.
Refer
to
the
specifications
in
“3
ELECTRICAL
ADJUSTMENT
AND
CHECKS”.
Signal
to
Noise
Ratio
Playback:
LH-I,
-I
EE
38cm/s:
50dB
min.
52dB
min.
19cem/s:
50dB
min.
52dB
min.
9.5cm/s:
49dB
min.
52dB
min.
Overall:
38cm/s:
48dB
min.
50dB
min.
19cem/s:
48dB
min.
50dB
min.
9.5cm/s:
46dB
min.
50dB
min.
Overall
(dbx):
65dB
min.
(All
speeds,
various
EQ
tapes)
At
1kHz
(measured
with
input
10dB
higher
than
the
specified
input
level)
38cm/s:
65dB
min.
19cm/s:
70dB
min.
9.5cem/s:
70dB
min.
Channel
Separation
50dB
min.
at
1kHz
Adjacent
Track
Crosstalk
40dB
min.
at
125Hz
Total
Harmonic
Distortion
At
1kHz,
and
at
HIGH
speed
0.8%
or
less
(LH-I,
LH-IL,
EE)
0.8%
or
less
(dbx
IN)
3%
or
less
(dbx
IN
+
20VU)
Erase
Efficiency
e
Improvements
may
result
in
SPECIFICATIONS
AND
SERVICE
DATA
changes.
e
Value
of
“dB”
in
the
data
refers
to
OdB
(0.775V),
except
where
specified.
X1000M/X-1000
2
MECHANICAL
ADJUSTMENTS
AND
CHECKS
2-1
ROTATING
PART
THRUST
CLEARANCE
CHECKS
Reference
values
Capstan
shaft:
0.1mm
to
0.25mm
(magnefloat
type)
Guide
roller:
0.05mm
to
0.3mm
Tension
arm
guide
roller:
0.05mm
to
0.3mm
Reel
motor:
0
(spring
type)
Tension
arm:
0
(spring
type)
NOTE:
Since
the
capstan
shaft
is
a
magnefloat
type,
check
that
it
is
forced
towards
the
rear
of
the
deck
while
rotating.
2-2.
BRAKE
ADJUSTMENT
NOTE:
The
explanation
and
figure
in
this
paragraph
are
for
the
left
side
brake,
similar
checks
and
adjustments
are
applicable
for
the
right
side
one.
:
1.
Adjust
by
moving
the
brake
band
bracket
in
either
direction
(arrow
(A))
so
that
the
reel
motor
chassis
is
in
parallel
with
the
brake
arm,
and
so
that
the
brake
band
makes
proper
clearance
equally
all
around
the
reel
table
base.
2.
Adjust
by
moving
the
brake
solenoid
in
either
direction
(arrow
(D})
so
that
the
stroke
of
the
solenoid
plunger
is
about
2mm.
3.
Adjust
by
moving
the
band
ass’y
retaining
plate
as
shown
in
(B,
C,
E)
so
that,
when
the
plunger.is
pushed
in
the
direction
of
the
solenoid
housing,
the
reel
table
base
is
not
rubbed
by
the
brake
band
and
is
properly
spaced.
(10-5/16")
540mm
(21-1/4'')
472mm
(18-9/16"")
432mm
(17'')
486mm
(19-1/8"")
506mm
(19-15/16)
452mm
(17-13/16"’)
Broken
line
indicates
General
Export
Models
for
Limited
Areas.
Fig.
1-1
Dimensions
reel
motor
chassis
brake
felt
solenoid
plunger
brake
band
brake
solenoid
reel
table
base
fe
band
ass’y
retaining
plate
Fig.
2-1
2-3:
BRAKE
TORQUE
MEASUREMENT
.
Place
an
empty
7”
reel,
connected
to
a
spring
scale
by
a
string,
on
the
reel
table.
Pull
the
scale
away
from
the
reel
and
read
the
scale
indication
only
when
the
reel
table
is
steady
motion.
Do
steps
1
and
2
for
each
measuring
condition,
(A)
through
(D)
in
Fig.
2-2.
The
values
are
as
chart
in
Fig.
2-2.
_
w
>
radius
1.2
to
1.9kg-em
(17
to
260z-inch)
er
[X-1000M]
|
Forward
direction
(B) (C)
4
9
+5
1.7kg-em
(17
to
240z-inch)
{X-1000]
0.7kg-cm
(9.702-inch)
or
less
[X-1000M]
Reverse
direction
(A)
(D)
et
0.6kg-cm
(8.30z-inch)
or
less
[X-1000]
0.2kg-cm
(2.802-inch)
or
less
Left/right
deviation
NOTES:
1.
The
reverse
direction
values
are
reference.
2.
The
specification
of
left/right
deviation
only
applies
for
forward
direction
torques.
Torque
calculating
formulas:
(1)
Torque
(in
g-cm
or
oz-inch)
=
Force
or
Weight
(in
g
or
oz)
x
Radius
(in
cm
or
inch)
(2)
Conversion
of
g-cm
to
oz-inch:
g-cm
x
0.0139
=
oz-inch
Fig.
2-2
X1000M/X-1000
2-4
PAUSE
POSITION
ADJUSTMENT
1.
Place
the
deck
in
the
pause
mode.
2.
Adjust
by
turning
the
pause
positioning
nut
so
thatthe
clearance
between
the
capstan
shaft
and
the
tape
is
0.5mm
to
1.0mm.
3.
Of
the
two
capstan
shaft/pinch
rollers,
adjustment
is
allowable
only
for the
side
having
the
narrower
clearance.
4.
Check
that,
by
repetition
of
play
mode
to
pause
mode
and
stop
mode
to
pause
mode,
there
is
clearance
at
both
sides.
Pause
positioning
nut
pressure
stroke
adjusting
nut
Fig.
2-3
Pause
position
and
pinch
rolier
pressure
stroke
adjustments
capstans
clearance
clearance
tape
Figure
shows
X-1000M.
Fig.
2-4
Pause
position
adjustment
2-5
PINCH
ROLLER
PRESSURE
STROKE
ADJUSTMENT
1.
Set the
deck
in
the
play
mode.
2.
Adjust
by
turning
the
pressure
stroke
adj.
nut
(Fig.
2-3)
so
that
the
clearance
between
the
pin
and
the
stopper
cushion
is
about
1.0mm.
3.
Since
the
clearance
is
produced
at
one
side
(left
or
right),
adjust-
ment
for
this
side
only
is
permissible.
left
capstar
right
capstan
left
right
pinch
roller
pinch
rofler
©
a
6
stopper
cushions
,
:
about
1.0mm
Either
the
left
or
right
should
have
a
clearance
of
about
1.0mm.
Fig.
2-5
2-6
PINCH
ROLLER
PRESSURE
MEASUREMENT
NOTES:
1.
The
explanation
below
applies
to
both
the
left
and
right
pinch
rollers.
:
2.
Both
pinch
roller
pressures
are
automatically
set
with
equal
value.
1.
Hold
both
the
left
and
right
tension
arms
in
the
upper
positions
using
rubber
bands,
string
etc.
2.
Set
the
deck
in
the
play
mode
with
no
tape
loaded.
3.
Attach
the
spring
scale
to
the
pinch
roller
as
shown
in
the
figure.
4.
Draw
the
pinch
roller
away
from
the
capstan
shaft
(in
the
direc-
tion
of
a
line
intersecting
the
centers
of
the
capstan
shaft
and
the
pinch
roller)
until
the
capstan
shaft
and
the
pinch
roller
are
se-
parated.
5.
Return
the
scale
back
unti!
the
pinch
roller
just
begins
to
turn.
The
scale
should
then
be
reading
as
follow.
Reference
value:
1.35kg
to
1.9kg
(3.0
Ibs
to
4.2
Ibs)
6.
If
the
reading
is
out
of
specification,
replace
defective
part(s).
There
are
no
adjustable
parts.
capstan
)
pinch
roller
\
\\
spring
scale
Fig.
2-6
2-7
CAPSTAN
MOTOR
REPLACEMENT
.
1,
When
replacing
the
capstan
motor,
install
as
shown
in
illustra-
tion.
r
Not
mounted
|
on
X-1000M
2-8
TAPE
TENSION
[eo]
°
Tape
tension
value
NGTE:
Alphabet
letters
in
parentheses
indicates
measuring
point
shown
in
figure.
Play
mode
Take-up:
(A)
in
FWO
Supply:
50g
+
10g
(1.402
~
2.102)
(B)
in
FWD
50g
+
10g
(1.402
~
2.102)
Fast
winding
mode
Take-up:
(A)
in
F.F.
|
110g
+
10g
(3.502
~
4.202)
(B)
in
REW
Supply:
(B)
in
F.F.
|
This
value
is
automatically
set
when
(A)
in
REW
|
doing
“2-9
FAST
WINDING
SPEED”
adjustment.
Fig.
2-8
NOTES:
1.
Since
these
settings
are
precisely
factory
adjusted,
in
general,
they
should
not
be
re-adjusted.
If
it is
specifi-
cally
required,
a
special
meter
is
needed.
2.
To
facilitate
adjustment,
the
deck
should
be
placed
in
a
vertical
position.
3.
For
the
reels
mounted
on
both
left
and
right
reel!
tables,
use
the
same
size
ones.
4,
Before
all
the
following
adjustments
(2-8-1
~
2-8-3),
perform
next
instructions
in
order
to
activate
the
rele-
vant
circuit.
a.
Thread
the
tape
to
lift
up
both
tension/shut-off
arms,
b.
Set the
POWER
switch
to
ON.
c.
Leave
the
deck
as
it
is
for
5
to
10
minutes.
5.
There
should
be
almost
equa!
values
between
tape
tension
at
point
A
during
fast
forward
mode
and
at
_
point
B.
during
rewind
mode.
X-1000M/X-:1000
2-8-1
IN
PLAY
MODE
—
1.
Place
a
reel
loading
TEAC
YTT-8013
test
tape
on
the
left
reel
table
and
an
empty
reel
on
the
right
reel
table,
then
thread
the
tape.
2.
Let
the
tape
run
in
fast
forward
mode
until
both
reels
have
nearly
the
same
tape
winding
diameter.
3.
During
play
at
a
LOW
speed,
measure
tape
tension
at
point
A.
4.
Adjust
R120
so
that
the
specified
tape
tension
of
50g
+
10g
(1.40z
~
2.102)
is
obtained.
2-8-2
IN
FAST
FORWARD
MODE
1.
Load
a
TEAC
YTT-8013
test
tape
on
the
left
reel
table
and
an
empty
reel
on
the
right
reel
table,
then
thread
the
tape.
2.
Stop
the
left
reel
by
hand
and
set
the
deck
in
fast
forward
mode.
3.
Adjust
R237
to
obtain
a
100g
to
120g
(3.502
~
4.202)
value
at
point
A
(Obtain
a
100g
or
3.00z
value
as
far
as
possible).
2-8-3
IN
REWIND
MODE
1.
Load
a
TEAC
YTT-8013
test
tape
on
the
right
ree!
table
and
the
empty
reel
on
the
left
reel
table,
then
thread
the
tape.
2.
Stop
the
right
reel
by
hand
and
set
the
deck
in
the
rewind
mode.
3.
Adjust
R238
to
obtain
a
100g
to
120g
(3.00z
~
3.602)
value
at
point
B
(Obtain
a
100g
or
3.50z
as
far
as
possible).
R120
...
FWD
PLAY
R238
...
REW
—Saemeh
23Y,
...
F,
ag
R289
...
(FF,
REW
SPEED)
TP.1
Fig.
2-9
Tape
tension
adjuster
location
X1000M/X-1000
2-9
FAST
WINDING
SPEED
1.
Set
the
deck
in
vertical
position.
2.
Connect
oscilloscope
between
TP1
test
point
on
the
POWER
_.length
displayed
on
the
oscilloscope
becomes
7msec.
Adjustment
=
SERVO
PCB
and
ground.
Thread
a
TEAC
YTT-8013
test
tape.
tn
this
case,
either
use
of
7
inch
reels
or
10
inch
are
permitted
provided
both
left
and
right
reels
are
the
same
size.
,
During
fast
forward
or
rewind
mode,
adjust
R289
so
that
wave-
should
be
satisfied
at
any
tape
winding
position.
Check
that
almost
equal
value
of
fast
winding
speed
is
obtained
between
fast
forward
and
rewind
modes.
7msec.
Fig.
2-10
Waveform
at
TP1
2-10
TENSION
ARM
HEIGHT
ADJUSTMENT
1.
Thread
any
standard
tape
on
the
deck
using
a
standard
empty
reels
such
as
TEAC
RE-1002.
Set
the
deck
in
the
forward
play
or
fast-forward
(fast
rewind)
mode.
Stop
left
(right)
guide
roller's
rotation
by
hand.
Adjust
by
turning
the
left
(right)
tension
arm
height
adjusting
nut
(refer
to
Fig.
2-11)
so.that
the
tape
moves
in
the
center
of
the
guide
roller.
Release
the
guide
roller.
Fine-adjust
the
adjust
nut
again
so
that
there
is
no
evident
tape
curling
on
the
left-most
(right-most)
tape
guide
pin
of
the
head
assembly.
After
adjusting
the
height
of
both
left
and
right
tension
arms,
check
that
the
tape
running
condition
is
good
by
switching
be-
tween
fast
forward
and
rewind
modes.
If
the
tape
running
position
is
different
when
the
guide
roller
stops
and
when
it
turns,
the
condition
when
the
gulde
roller
is
rotating
has
priority.
Figure
shouws
left
side
tension
arm.
;
left
tension
arm
tension
arm
height
adj.
nut
photo-interrupter
position-detecting
shutter
Fig.
2-11
2-11
REEL
TABLE
HEIGHT
ADJUSTMENT
1.
Adjust
the
tension
arm
height
beforehand
(See
2-10).
2.
Check
each
reel
table
height
using
a
TEAC
RE-1002
empty
reel
and
letting
the
tape
run
in
each
tape
operating
mode.
3.
If
the
tape
rubs
against
the
reel
flanges,
adjust
the
reel
table
height
by
means
of
the
two
reel
table
mounting
screws,
two
screws
Fig.
2-12
2-12
HEAD
AND
TAPE
PATH
ALIGNMENTS
NOTE:
The
adjustments
referred
to
in
this
section
are
so
closely
related
to
one
another
that
it is
necessary
to
re-check
the
other
adjustments
after
completion
of
one.
EXAMPLE
OF
MIS-
HEAD
REGULATION
ELEMENTS
ALIGN-
MENT
TILT
The
head
surface
should
be
parallel
to
the
tape
guide
pin
surface.
AZIMUTH
The
gap
of
the
head
core
should
be
perpendicular
to
the
tape
travel.
HEIGHT
(2T)
TANGENCY
The
dotted
line
should
be
perpendicular
to
the
surface
of
the
tape.
meat
ce
Fig.
2-13
Head
regulation
elements
The
head
cores
should
be
equally
distant
from
the
|.
~
2"
SSS
upper
and
lower
eges
of
the
tape.
HEIGHT
(4T)
cs
The
top
edge
of
the
upper
core
of
the
head
should
|
—7-—
be
level
with
the
upper
edge
of
the
tape.
:
a
ee
X-1000M/X-1000
i
Figure
shows
X-1000M.
Adjustment
screws
and
nuts
@
Head
azimuth
Tape
guide
adjustment
nut
©
Head
height
and
tilt
@
(©
Head
mounting
X-1000M
2T
meee
27 4T
Erase
Record
Play
Play
eo)
Tape
guide
height
4T 4T
4T
i
j
x-1000
ee
edie
Piey
Not
mounted
©
Fixed
(not
adjustable)
Fig.
2-14
Tape
guide
and
head
arrangement
2-12-1
COARSE
ADJUSTMENT
OF
PINCH
ROLLER
r
PARALLELISM
i
The
following
procedure
is
for
parallelism
adjustment
of
feft
pinch
i
roller,
A
similar
procedure
is
also
applied
for the
right
pinch
roller.
———s
1.
Let
pinch
roller
draw
near
toward
capstan
shaft
by
manually
lift-
en
oer
capstan
shaft
ing
up
tape
lifter
shown
in
Fig.
2-15.
2.
Check
pinch
roller/capstan
shaft
parallelism
viewed
from
direc-
tion
of
arrow
A
shown
in
Fig.
2-15.
Refer
to
Fig.
2-16.
3.
If
not
parallel,
loosen
the
reinforcement
plate
screw
near
the
Fig.
2-16
View
in
direction
A
(example
of
non-parallelism)
correction-required
side
(Refer
to
Fig,
2-18),
then
correct
tilt
of
pinch
roller
spindle
using
correction
jig.
Adjustment
can
be
done
by
tilting
correction
jig
in
direction
of
arrow
A
or
A’.
I
(1)
Use
the
jig
as
near
as
possible
to
the
pinch
roller
spindle.
capstan
shaft
(2)
Do
not
touch
the
surface
of
spindle.
(3)
Use
no
other
tool
for
this
adjustment!
pinch
roller
shaft
4.
Remove
pinch
roller,
then
push
up
tape
lifter
to
visually
align
pinch
roller
spindle
with
the
capstan
shaft
viewed
from
direction
i
of
arrow
B
in
Fig.
2-15.
Fig.
2-17
View
in
direction
B
(example
of
non-paratlelism)
5.
If
needed,
adjust
by
tilting
correction
jig
in
direction
of
arrow
B
or
B’
in
Fig.
2-18.
correction
jig
(TEAC
P/N
5736000100)
B
ae
at
reinforcement
plate
screws
g
(Loosen
the
correction-required
side)
"4
A
reinforcement.
pinch
roller
tape
lifte
‘
BPS
ite
spindle
Fig.
2-18
Pinch
roller/capstan
alignment
Fig.
2-15
Directions
for
pinch
roller
parallelism
check
X-1000M/X1000
2-12-2
HEAD
TILT
AND
AZIMUTH
ADJUSTMENT
1.
Visually
adjust
the
tilt
of
playback
and
record
heads
so
that
the
head
surface
is
parallel
to
the
nearest
tape
guide
or
capstan
shaft.
Make
coarse
azimuth
adjustments
for
the
record
and
playback
head,
viewing
each
head
from
front
(without
tape).
2-12-3
TAPE
GUIDE
HEIGHT
ADJUSTMENT
1.
Playing
a
TEAC
YTT-8013
test
tape
(thickness
=
35m),
adjust
the
height
of
the
left
tension
arm
so
that
the
lower
edge
of
the
tape
is
just
touching
the
lower
edge
of
the
tape
guide
(1).
See
Fig.
2-19.
Also
refer
to
“2-10
TENSION
ARM
HEIGHT
ADJUST-
*
MENT”.
Adjust
the
height
of
the
tape
guide
(2)
so
that
the
upper
edge
of
the
tape
is
in
contact
with
the
upper
edge
of
the
tape
guide.
Confirm
that
the
adjustments
do
not
cause
the
tape
to
curl.
Adjust
height
of
tape
guides
(3)
and
(4)
in
the
same
way
as
steps
1~3.
For
tape
guide
(4),
adjust
right
tension
arm
height.
Check
to
see
there
is
no
tape
curling
at
all
the
tape
guides.
Apply
locking
paint
to
the
height
adjust
nut
of
tape
guides
(2)
and
(3).
tape
guide
(1)
tape
guide
roller
erase
head
tension
arm
cea
Adjust
tension
arm
height
for
tape
to
lightly
touch
here.
EEE
tension
arm
height
adj.
nut
Fig.
2-19
Tension
arm
height
adjustment
tape
guide
height
adj.
nut.
tape
Adjust
so
that
tape
touch
lightly
here.
tape
guide
(2)
or
(3)
Fig.
2-20
Tape
guide
height
adjustment
2-12-4
FINE
ADJUSTMENT
OF
PINCH
ROLLER
PARALLELISM
With
HIGH
tape
speed,
each
pinch
roller
should
satisfy
the
follow-
ing
requirements.
1.
Remove
pinch
roller
cap.
2.
Manually
move
pinch
roller
upwards
(along
pinch
roller
spindle)
by
1
~
2mm
from
the
stop
portion
of
the
spindle,
then
play
a
test
tape.
3.
During
play
mode,
observe
whether
the
pinch
roller
position
changes
in
the
spindle
direction.
:
4.
lf
a
change
is
found,
re-adjust
accurately
tilt
of
pinch
roller
spindle
by
method
illustrated
in
Fig.
2-18.
2-12-5
HEAD
HEIGHT
ADJUSTMENT
1.
On
X-1000M
model,
fine-adjust
the
height
of
the
2T
record
and
2T
playback
heads
so
that
their
head
cores
are
equally
distant
from
the
upper
and
lower
edges
of
the
tape.
2.
Fine-adjust
the
height
of
the
4T
record
and
4T
playback
head(s)
so
that
the
head’s
brass-colored
spacer
shows
just
above
the
mav-
ing
tape
(about
the
thickness
of
a
thin
pencil
line).
2-13,
TAPE
SPEED
ADJUSTMENT
FREQUENCY
COUNTER
DECK
under
TEST
(R)
LINE
IN
OSCILLATOR
WOW
&
FLUTTER
METER
(R)
OUTPUT
Fig.
2-21
TEAC
Tape
Speed
and
Flutter
test
tapes:
YTT-2004:
For
38cm/s
(15
ips)
speed
YTT-2003:
For
19cm/s
(7-%
ips)
speed
YTT-2002:
For
9.5cm/s
(3-%
ips)
speed
1.
Connect
a
frequency
counter
to
either
OUTPUT
terminal.
2.
Load
a
TEAC
YTT-2004
(X-1000:
YTT-2003)
test
tape.
Set
the
SPEED
switch—HIGH,
and
PITCH
CONT
knob—OFF.
3.
Play
the
tape.
Adjust
HIGH
SPEED
control
(see
Fig.
2-22)
fora
reading
of
3,000Hz
+5Hz.
4.
Check
the
following
at
the
beginning
and
the
end
of
the
tape.
Specifications:
Tape
speed
deviation
..............
3,000Hz
+30Hz
Tape
speed
drift
...
2...
eee
ee
..
I5Hz
5.
Change
the
test
tape
to
a
TEAC
YTT-2003
(X-1000:
YTT-2002),
and
SPEED
switch
setting
to
LOW.
6.
Repeat
steps
3
through
4.
Adjust
LOW
SPEED
control
if
neces-
sary.
7.
Pull
the
PITCH
CONT
knob
out.
Set
SPEED
switch
HIGH.
Play
a
YTT-2004
(X-1000:
YTT-2003)
tape.
8.
Check
if
the
speed
variation
of
at
least
3,000Hz
+180Hz
is
ob-
tained
when
the
PITCH
CONT
knob
is
rotated
fully
in
both
directions.
9.
Change
the
test
tape
to
YTT-2003
(X-1000:
YTT-2002),
SPEED
switch
setting
to
LOW.
Repeat
step
8.
capstan
motor
capstan
servo
PCB
HIGH
SPEED
(May
LOW
SPEED
faster
slower
Fig.
2-22
2-14
WOW
AND
FLUTTER
CHECKS
.
TEAC
Tape
Speed
and
Flutter
test
tapes:
Refer
to
the
beginning
of
paragraph
2-13,
NOTE:
The
following
measurements
should
be
made
at
the
begin-
ning
and
the
end
of
the
tape.
Playback
1.
Connect
the
test
equipment
to
the
deck
as
shown
in
Fig.
2-21.
2.
Load
and
play
a
TEAC
YTT-
2004
(X-1000:
YTT-2Z003)
test
tape
for
HIGH
speed.
3.
Read
the
indication
on
the
wow
and
flutter
meter.
4.
Repeat
steps
2
through
3
using
a
TEAC
YTT-2003
(X-1000:
TEAC
YTT-2002)
tape
for
LOW
speed.
5.
Wow
and
flutter
specifications
are
as
shown
below.
X-1000M:
HIGH
(38cm/s):
0.04%
WRMS
0.08%
RMS
LOW
(19cm/s):
0.05%
WRMS
0.10%
RMS
HIGH
(19cm/s):
0.05%
WRMS
0.10%
RMS
LOW
(9.5cm/s):
0.07%
WRMS
0.12%
RMS
X-1000:
Overall
6.
Load
a
TEAC
YTT-8013
test
tape
(blank).
Apply
and
record
a
3,000Hz
signal.
7,
During
simultaneous
tape
monitoring
(playing)
the
recorded
signal,
read
the
wow
and
flutter
meter
display.
Specifications:
X-1000M:
HIGH
(38cm/s):
0.10%
RMS
LOW
(19cm/s):
0.12%
RMS
HIGH
(19cm/s):
0.12%
RMS
LOW
(9.5cem/s):
0.15%
RMS
X-1000:
oo
__X4000M/X1000
2-15
LUBRICATION
Oiling
is
needed
after
every
1,000
hours
of
operation
or
once
a
year
if
the
deck
is
infrequently
used.
For
this
purpose,
TEAC
spindle
oil
(from
TEAC
T2Z-255
oil
kit),
Mobil
D.T.E.
Oil
Light,
etc.
are
recom-
mended.
Lubrication
is
normally
not
necessary
except
at
the
points
shown.
1.
Place
the
deck
in
the
horizontal
position.
2.
Apply
a
few
drops
of
oil
to
the
respective
spindles
shown,
exclud-
ing
capstans,
then
spread
the
oil
evenly
on
the
spindle
surfaces
using
a
cotton
cloth,
etc.
.
For
capstans,
apply
a
few
drops
to
the
indicated
position:
4.
After
oiling
all
the
points,
leave
the
deck
for
1
to
2
hours
until
the
oil
is
thoroughly
absorbed,
Figure
shows
left
side.
Do
also
for
right
side.
tension
roller
5
guide
roller
pinch
roller
capstan
&
BO
ed
Gf)
a
ee
Fig.
2-23
2-16
VOLTAGE
CONVERSION
(FOR
GENERAL
EXPORT
MODELS)
Always
disconnect
the
power
line
cord
before
making
these
adjust-
ments.
Frequency
Conversion
Since
the
X
series
uses
DC
motors,
frequency
conversion
is
not
necessary.
Voltage
Conversion
1.
First
remove
the
two
feet
by
removing
the
screws
in
each
one.
2.
Unscrew
the
left
and
right
sides
of
the
cabinet.
3.
Locate
the
voltage
selector
above
the
power
transformer
as
seen
from
the
rear
of
the
deck.
4.
Remove
the
plug
by
pulling
it
out,
then
re-insert
it so
that
the
arrow
on
the
piug
is
parallel
with
the
white
line
indicating
the
proper
voltage.
5.
Replace
the
cabinet
and
feet.
AOve
AOQZ
SCE):
Bee
Fig.
2-24
AOO!
X1000M/X-1000
3
ELECTRICAL
ADJUSTMENTS
AND
CHECKS
NOTES:
1.
Before
performing
adjustments
and
checks,
clean
and
demag-
netize
the
entire
tape
path.
2.
Check
that
the
deck
is
properly
set
for
the
voltage
in
your
lo-
cality.
3.
In
general,
adjustments
and
checks
are
done
in
the
order
of
L-ch
then
R-ch.
Double
REF.
Nos.
indicate
L-ch/R-ch.
3-1
MONITOR
PERFORMANCE
(Example:
R371/R372)
.
The
value
of
“dB”
refers
to
OdB
(0.775V).
If
an
AC
voltmeter
calibrated
to
0dB
(1V)
is
to
be
used,
appropriate
compensation
should
be
made.
.
The
AC
voltmeter
used
in
the
procedures
must
have
an
input
impedance
of
1M-ohms
or
more,
MODE/
CONNECTION
INSTRUCTION
SIGNAL
SOURCE
ADJUST
(or
CHECK)
RESULT
REMARKS
1.
Monitor
level
DBX
sw—OUT
{Leave
OUT
up
to
step
27,
“DBX
PER-
OSC
+
ATT
to
LINE
IN
(L)
400H2/—22dB
(61.5mV)
—8dB
(308mV)
LINE
min.
input
level
(L)
AC
voltmeter
to
REC
AND
PLAY
AMPL.
PCB
term.
FORMANCE”
section).
MON!TOR—SOURCE
2.
Output
2-1
level
3.
VU
meter
3-1
4,
MIC
input
level
#14,
MIC
ATT—O
OUTPUT
cont.—CAL
LINE
cont.-MAX
MIC
cont.—MIN
"
LINE
spec.
LINE
IN
(L)
>
input
level
condition
LINE
(N
(R}
#14
#17
Fig.
3-1
LINE
spec.
input
level
condition
Fig.
3-1
LINE
spec.
400Hz/—12dB
input
level
condition
|
(195mV)
LINE
cont.—MIN
MIC
cont.—MAX
Fig.’3-1,
but
LINE
IN
>
MIC
MIC
cont.—in
the
above
set
position
MIC
ATT—20
OSCILLATOR
ATTENUATOR
DISTORTION
ANALYZER
DECK
under
TEST
LINE
cont.—spec.
position
(Item
1-2)
MIC
cont.—MIN
|
MIC
ATT—O
OSCILLOSCOPE
AC
VOLTMETER
1KHz
FILTER
400Hz/—12dB
(195mvV)
”
400Hz/—12dB
(195mV)
400Hz/—70d0B
400Hz/—60dB
(0.775mV)
OSCILLATOR
R403/R404
R371/R372
LINE
IN
—5dB
(436mvV)
Ovu
on
VU
meter
—5dB
(436mvV)
—25dB
+1dB
(38.8mV
~
LINE
spec.
input
level
(R)
MIC
min.
input
level
IMPORTANT:
Do
not
disturb
these
cont’s
during
later
checks.
OSCILLOSCOPE
OUTPUT
LINE
IN
OUTPUT
Fig.
3-1
Basic
connection
10
Fig.
3-2
Connection
for
phase
check
0°
(IN
PHASE)
45°
90°
180
2
f
Fig.
3-3
Confirming
phase
reiationship
|
X1000M/X-1000
TEAC
test
tapes:
For
playback
alignment
YTT-1004:
For
38cm/s
(15
ips),
LH-H
YTT-1003:
For
19em/s
(7-%
ips),
LH-I
YTT-1002:
For
9.5cm/s
(3-%
ips),
LH-I
YTT-1053:
For
19cm/s
(7-%
ips),
EE
YTT-1052:
For
9.5em/s
(3-%
ips),
EE
For
recording
alignment
(blank)
YTT-8013:
For
LH-H
3-2
PLAYBACK
PERFORMANCE
YTT-1054:
For
38cm/s
(15
ips),
EE
CONNECTION
MODE/
INSTRUCTION
SIGNAL
SOURCE
ADJUST
(or
CHECK)
YTT-8053:
For
EE
RESULT
REMARKS
5,
Playback
head
azimuth
Fig.
3-2
MONITOR-—TAPE
SPEED—19cm/s
TAPE
sw—LH-1
Note:
On
X-1000M,
adjust
both
2T
and
4T
playback
heads.
YTT-1003
(16kHz/—10dB)
Azimuth
adj.
screw/s
of
head
(Fig.
2-14)
Phase:
within
45°
on
oscilloscope
(Fig.
3-3)
6,
Playback
7.
VU
meter
8.
Freq
uency
response
PLAY
HEAD
sw
[X-1000M]
~—2T
EQ
sw
[X-1000M]
—
NAB
OUTPUT
cont.—CAL
SPEED—19cm/s
OUTPUT
cont.—
YTT-1003
(400Hz/0dB)
R313/R314
PLAY
HEAD
sw—4T
(Reset
to
2T
after-
wards)
Spec.
PB
condition
boomer
eee
9.5cm/s
38cm/s
19cm/s
9.5cm/s
9,
Phase
shift
93|
«
TAPE
sw—LH-I
SPEED—38cm/s
SPEED—9.5cm/s
10.
PHONES
output
level
_
3-5
Spec.
PB
condition
YTT-1003
(400Hz/OdB)
YTT-1002
YTT-1054
YTT-1053
YTT-1052
R327/R328
R333/R334
[X-1000M]
R327/R328
{X-1000]
(Ref.:
400Hz)
Say
—5dB
(436mV)_
|
Spec.
PB
condition
For
EQ
switch
location,
refer
to
Fig.
3-6.
+1dB £2dB
{690mV
~
Max.
output
level
Spec.
PB
condition
IMPORTANT:
Do
not
disturb
OUTPUT
cont.
during
later
checks.
—9dB
+2dB
(218mV
~
346mvV)
X-1000M
only
OVU
+1VU
on
VU
meter
40Hz
~
26kHz
+3dB
X-1000M
only
40Hz
~
26kHz
+3dB
(Ref.:
400Hz)
YTT-1004
LH-O
EE
YTT-1002
YTT-1052
+3dB
DECK
under
TEST
-~44B
400
14k
i8k(Hz)
Fig.
3-4
Playback
frequency
response
(9.5cm/s)
YTT-1003
(400Hz/0dB)
within
45°
on
oscilloscope
(50Hz
~
22kHz)
(Fig.
3-3)
oO
PHONES
—24dB
+2dB
(38.8mV
~
61.5mV)
{at
PHONES
jack)
‘|
When
OUTPUT
terminal
is
at
—5dB
AC
Voltmeter
Fig.
3-5
Connection
for
PHONES
level
check
TEST
LOAD
RESISTORS
11
X-1000M/X-1000
12
MODE/
INSTRUCTION
ITEM
CONNECTION
SIGNAL
SOURCE
ADJUST
(or
CHECK)
RESULT
LH
and
EE
Spec.
PB
condition
Use
fully
erased
tape
(Use
bulk
tape
eraser)
11.
Signal
to
noise
ratio
TAPE
sw-—-LH-I
SPEED—19cm/s
PLAY
HEAD
sw—4T
(Reset
to
2T
after-
wards)
.
Frequency
response
(4T
play-
back
head)
[X-1000M]
12-1
|
Fig.
3-1
TAPE
sw—LH-IT
SPEED—38cm/s
EQ
sw—lEC
For
EQ
switch
location,
refer
to
Fig.
.
Frequency
response
(1EC)
[X-1000M]
13-1|
Fig.
3-1
YTT-8013
and
YTT-8053
YTT-1003
YTT-1004
Check
IMPORTANT:
After
completion
of
step
13-1,
set
EQ
sw
as
below:
For
USA,
Canada,
Australia
and
General
Export
models
—
NAB
position
For
Europe
and
U.K.
models
—
IEC
position
between
BIAS
TRAP
TP
(TP1/
TP2)
&
GND
Rec-pause
mode
MONITOR—TAPE
OUTPUT
con.—CAL
LH-I,
-Il:
38cm/s
50dB
19cm/s
50dB
9.5em/s
49dB
EE:
38cm/s
52dB
19cm/s
52dB
9.5cem/s
52dB
50Hz
~
14kHz
+7dB
{Ref.:
400Hz)
-Ratio
of
spec.
—5dB
to
noise
-Change-over
the
polarity
of
the
AC
Line
plug.
The
'
worse
reading
should
be
within
spec.
Level
difference
against
measured
value
in
step
8-1
at
each
frequency
point
(3)
should
be
as
shown
approximately:
63Hz
+2.1dB
10kHz
—2.7dB
20kHz
—3.0dB
TEAC
test
tape:
YTT-8013:
For
recording
alignment
(blank)
for
LH-IL
YTT-8053:
For
recording
alignment
(blank)
for
EE
SIGNAL
SOURCE
15.
Record
head
azimuth
MONITOR—TAPE
SPEED—19cm/s
10kHz/—32dB
(19.5mvV)
16.
Record
16-1|
Fig.
3-1
19cm/s
bias
[X-1000M]
or
9.5cm/s
J
[X-1000]
MONITOR
TAPE
7kH2z/—22dB
(61.5mV)
ADJUST
(or
CHECK)
L303/L304
Azimuth
adj.
screw/s
of
head
(Fig.
2-14)
R515/R516
RESULT
Min.
reading
Min,
reading
(4.36mV
or
less))
VU:
no
deflec-
tion
Phase:
within
45°
on
oscilloscope
(Fig.
3-3)
Over-bias
value
2.5dB
+1dB
(3dB
+1dB
for
X-1000)
from
Over-bias
value
3dB
+1d0B
(4dB
+1dB
for
X-1000)
from
peak
(—45dB
or
more
REMARKS
Bias
freq.:
100kHz
+5kHz
-Simultaneous
monitoring
-First
set
adjustor
fully
CCW
(C)
),
then
adjust.
Fig.
3-6
EQ
switch
location
(X-1000M
only)
+4
+2
to)
-2
~4
(dB)
fe
mn4
+308
0
+
LH-II
2
_.!
—
LYTT-8013
ed
4-463
(dB)
Be
40
400
Tex
22k
(Hz)
YTT-8053
20k
Fig.
3-7
Overall
frequency
response
(9.5cm/s)
race
LH-It
yl
YT
YTT-8013
-3¢1
—3
dB
(38
om/s)
.
“4-6
dB
(190m/s)
EE
40
400
"~~".
YTT-8053
20k
30k
(Hz}
26k
Fig.
3-8
Overall
frequency
response
(38cm/s,
19cm/s)
CONNECTION
MODE/
INSTRUCTION
SIGNAL
SOURCE
ADJUST
(or
CHECK)
17-1|
Fig,
3-1
Same
as
16-2
SPEED—19cm/s
400Hz/—12dB
R429/R430
(195mV)
.
Distortion
|
18-1|
Fig.
3-1
Same
as
16-1
and
16-2,
but
SPEED
sw
—38cm/s
[X-1000M]
{or
19cm/s
[X-1000]
.
Signal
to
noise
ratio
.
Erase
efficiency
Fig.
3-1
switch
on
1kHz
filter
MONITOR-—TAPE
LH-IT
YTT-8013
Hee
YTT-8053
|
1kHz/—12dB
X-1000M/X-1000
RESULT
REMARKS
—5dB
(436mvV)
Spec.
REC
condition
4kH/—12dB
(195mvV)
(195mV)
then
No
signal
‘|0.8%
or
less
(w/LH-I,
EE)
LH-[:
38cm/s
19cm/s
9.5cm/s
recording
EE:
38cm/s
19cm/s
9.5cm/s
TAPE
sw—EE
MONITOR—TAPE
SPEED—38cm/s
[X-1000M]
or
19cm/s
{
X-1000]
TAPE—YTT-8053
1kHz/—2dB
(615mV)
{+40VU)
then
erasing
Ratio
of
spec,
—5dB
to
noise
38cm/s:
65dB
min.
19cm/s:
70dB
min.
-Ratio
of
1kHz
portion
to
‘‘no
signal"
portion
-The
worst
value
should
be
within
spec.
.
REC
MUTE
function
.
Frequency
response
Fig.
3-1
switch
on
1kHz
filter
{—
Spec.
REC
condition
Rec-mute
mode
MONITOR]
9.5cm/s
—TAPE
4
EE
YTT-8053
38cm/s
LH-IT
YTT-8013
9.5cem/s
19cm/s
38cm/s
Spec,
REC
condition
SPEED—19cm/s
~
.
LH-1
position
check
.
Adjacent
track
crosstalk
[X-1000]
.
Channel
separa-
tion
Fig.
3-1
switch
on
1kHz
filter
1kHz/—2dB
(615mV)
(+70VU)
then
record
muting
}——
65dB
min.
-Ratio
of
1kHz
portion
to
“’no
signal’
portion
-The
worst
value
should
be
within
spec.
L305/L306
[X-1000]
Check
[X-1000]
L305/L306
[X-1000M]
Required
signal/
40Hz
~
10kHz/
—32dB
(19.5mV)
Spec.
REC
condition
Tape—YTT-8013
SPEED—19cm/s
20kHz/—32dB
(19.5mV)
within
45°
on
oscilloscope
(40Hz
~
16kHz)
(Fig.
3-3)
Also
it
is
possible
to
fine-adjust
by
the
record
bias
adjustors
(see
item
16.)
if
this
respective
specified
record
bias
setting
ranges
are
kept.
When
TAPE
SELECTOR
sw
is
changed
LH-T
>
LH-I,
output
level
should
raise
+3dB
+1dB.
Spec.
REC
condition
SPEED—19cm/s
TAPE
sw—LhH-IL
Interchange
R
&
L
reels
then
play.
125Hz/—12dB
(195mV)
Same
as
25-1
L:
1kHz/—12dB
|
Check
(195mV)
R:
No
signai
record.
L:
No
signal
At
both
L-and
R-ch
125Hz:
—45dB
or
more
(4.36mV
or
less)
(40dB
min.
ratio)
R,
—55dB
or
more
(1.38mV
or
less)
(50dB
min.
ratio)
record.
R:
1kHz/—12dB
13
X%1000M/X1000
:
NOTE:
3-4
DBX
PERFORMANCE
Test
this
performance
only
after
you
are
sure
that
the
“’3-5
DBX
PCB
ADJUSTMENT
is
correct.
MODE/
SIGNAL
ADJUST
CONNECTION
INSTRUCTION
SOURCE
_ |
(or
CHECK)
RESULT
‘REMARKS
.
27,
Encoder
OSC
—
ATT
to
DBX
sw—OUT
1kHz/—12dB
—8dB
(308mvV)
level
LINE
IN
(both
MON!ITOR—
(195mvV)
L-
&
R-ch’s)
SOURCE
OUTPUT
cont.—CAL
AC
voltmeter
to
LINE
cont.—Spec.
REC
AND
PLAY
|
position
(item
1-2)
AMPL.
PCB
term.
|
MIC
cont.—MIN
#46
:
Same
as
above,
i
R737/R738
|
—8dB
+0.5dB
but
(291mV
~
DBX
sw—IN
327mV)}
Repeat
27-1
~
27-2
by
changing
to
REC
AND
PLAY
AMPL.
PCB
term.
#47.
IMPORTANT:
Do
not
disturb
all
MIC,
LINE
and
OUTPUT
controls
during
later
checks.
28.
Decorder
Tape—YTT-8013
1kHz/—12dB
Note
the
measur-
level
DBX
sw—OUT
(195mV)
ed
output
as
SPEED—19cm/s
reference.
REC
MODE—-ON
TAPE
sw—LH-I
MONITOR—TAPE
Same
as
above
R637/R638
|
+0.5dB
deviation
but
from
ref.
DBX
sw—iN
29.
Frequency
Same
as
22-1
~
Required
signal,
38cm/s,
19cm/s:
response
22-6,
but
—32dB
40Hz
~
20kHz
-
|
DBX
sw—IN
(19.5mV)
+5,
—4dB
EE
al
(Ref.:
400Hz)
YTT-8053f
OT'V
9.5cm/s:
40Hz
~
16kHz
+5,
—4dB
(Ref,:
400Hz)
|
30.
Signal
to
DBX
sw—IN
1kHz/—12dB
65dB
min.
ratio
|
Ratio
of
spec.
—5dB
to
noise
ratio
REC
MODE
sw—ON_
|
(195mV)
(w/LH-,
EE
at
|
noise
MONITOR—TAPE
then
all
tape
speeds)
LH-I
No
signal
YTT-8013
recording
EE
YTT-8053
31.
Distortion
Same
as
30-1
1kHz/—12dB
0.8%-or
less
OVU
input
level
:
but
{195mvV)
(w/LH-I,
EE)
SPEED—38cm/s
[X-1000M]
or
19cm/s
[X-1000]
1kHz/+8dB
3%
or
fess
20V
U
input
level
(1.95V)
(w/LH-II,
EE)
3-5
DBX
PCB
ADJUSTMENT
NOTES:
1.
This
section
adjustment
is
not
usually
needed
unless
a
trimmer(s)
AVS
AUTAPSIUBLUN,
has
been
changed
or
a
component(s)
on
the
DBX
PCB
has
sus-
HAH
tained
damage,
since
the
PCB
has
been
precisely
adjusted
in
the
a
Hl im
|
factory.
2.
Disconnect
all
connectors
on
the
DBX
PCB,
except
for
J501/
Fig.
3-9
RMS
symmetry
adjustment
(incorrect)
P501.
Turn
the
deck
OFF
to
prevent
accidental
damage
when
disconnecting
or
reconnecting.
Fig.
3-10
RMS
symmetry
adjustment
(correct)
14
|
X1000M/X1000
3-5-1
ENCODER
ADJUSTMENT
Connector's
pin
1
and
pin
S
correspond
to
L-ch
and
R-ch.
AC
VOLTMETER
Low
distortion
~
DBX
PC
ee
OSCILLOSCOPE
AF
OSCILLATOR
8903:
EA
cal
ATTENUATOR
Pres)
4
_
4
a
P701-1(5)
GND
GND
Distortion
factor:
0.02%
or
less
Max.
output
level:
3V
or
more
‘j
Fig.
3-11
Encoder
adjustment
setup
This
terminai
is
not
the
same
as
the
encoder
and
decoder
terminal
(See
Fig.
3-14).
U501-2
is
not
used.
Level
variation:
5mV
or
less
OSCILLOSCOPE
DBX
PCB
TP.3(TP.4)
(5)4
Y
scorer
DEFLECTION
WAVEFORME
Do
not
ground
these
GND
terminals.
v
4180mV
t
-180mV
7
SYMMETRY
ADJUSTMENT
WAVEFORM
VCA
SYMMETRY
ADJUSTMENT
WAVEFORM
GENERATOR
Fig.
3-12
VCA
symmetry
adjustment
setup
(encoder)
MEASURING
POINT:
ADJUST
{TEM
INPUT
INSTRUCTION
(or
CHECK)
RESULT
.
Preparation
Prepare
test
setup
as
shown
on
Fig.
3-11.
Preset
each
of
the
trimmers
of
the
encoder
section
on
the
PCB
to
their
approximate
center
teens
_
positions.
.
Input
setting
:
Apply
100Hz
level
to
get
RESULT
j
Attenuator
P702-1(5):
|
value,
300mV
(—-8.2dB)
.
RMS
symmetry
R765/R766
|
TP3(TP4):
Refer
to
Figs.
3-9
and
Clean
200Hz
sine-wave
3-10.
:
.
RMS
time
/
Check
TP3(TP4):
constant
385uV
(—66.1dB)
+20%
.
Encoder
nominal
Apply
1kHz
level
to
get
RESULT
Attenuator
P702-1(5):
level
value,
300mvV
(—8.2dB)
R737/R738
|
P703-1(5):
*4
300mV
(—8.2dB)"1
|__
Reference
1
|
.
VCA
symmetry
Change
test
setup
to
as
Fig.
3-12,
R757/R758
|
P703-1(5):
then
adjust.
:
A
relatively
straight
hori-
zontal
line
on
the
‘scope
face’.
(Level
variation:
5mV
or
less)
15
X-1000M/X-1000
|
ADJUST
|
MEASURING
POINT:
ITEM
INPUT
INSTRUCTION
(or
CHECK)
RESULT
REMARKS
7.
Frequency
Return
to
Fig.3-11test
setup.
P703-1(5):
response
Change
oscillator
frequency
to
—2.5dB
+0.5dB
against
(X-1000M)
100Hz.
:
Ref,
1.
;
(212mV
~
238mV)
Change
oscillator
frequency
to
P703-1(5):
10kHz.
—4.7dB
+0.5dB
against
Ref.
1.
(165mV
~
185mvV)
8.
Frequency
Change
oscillator
frequency
to
P703-1(5):
response
100Hz,
+0.5dB
+0.5dB
against
(X-1000)
Ref.
1.
(300mV
~
337mV)
Change
oscillator
frequency
to
P703-1(5):
10kHz.
—3.2dB
+0.5dB
against
Ref.
1.
(196mV
~
220mV)
9.
Encoder
effect-1
Apply
1kHz
level”
2
to
get
Attenuator
P702-1(5):
*2
RESULT
value.
300mvV
(—8.2dB)
Apply
1kHz
at
—60dB
against
P703-1(5):
Ref.
2.
—30dB
+0.5dB
against
Ref,
1.
(8.96mV
~
10.1mV)
10.
Encoder
effect-2
Apply
1kHz
at
+20dB
against
P703-1(5):
Ref.
2.
+10dB
+0.5dB
against
Ref.
1.
(0.896V
~
1.01V)
Distortion:
0.3%
or
less
3-5-2
DECODER
ADJUSTMENT
sel
ani
aaa
Sirs
correspond
to
L-ch
and
R-ch.
AC
VOLTMETER
Low
distortion
DBX
PCB
AF
OSCILLATOR
P602-1(4)
ATTENUATOR
peas
:
5}
pgot-1(ayTP-1(TP.2)
PT.
@®
@®
J
4
GND
GND
¢
Distortion
factor:
0.02%
or
less
Max.
output
level:
3V
or
more
j
Fig.
3-13
Decoder
adjustment
setup
This
terminal
is
not
the
same
as
the
decoder
and
encoder
terminal
(See
Fig.
3-12).
U501-6
is
not
used.
Level
variation:
5mV
or
less
OSCILLOSCOPE
DBX
PCB
y
P501-1
¥
U501-8
9
U501-2
P603-1
TP.1(TP.2)
(4)
¢
SCOPE
DEFLECTION
WAVEFORM
Do
not
ground
these
GND
terminals,
4+180mV
1
—180mV
SYMMETRY
ADJUSTMENT
WAVEFORM
VCA
SYMMETRY
ADJUSTMENT
WAVEFORM
GENERATOR
Fig.
3-14
VCA
symmetry
adjustment
setup
(decoder)
16
Reference
2
as
ITEM
INPUT
INSTRUCTION
ADJUST
(or
CHECK)
.
Preparation
1
Prepare
test
setup
as
shown
on
Fig.
3-13.
-.
MEASURING
POINT:
RESULT
X:1000M/X-1000
REMARKS
~
Preset
each
of
the
trimmers
of
the
decoder
section
on
the
PCB
to
their
approximate
center
positions.
.
Input
setting
.
RMS
symmetry
Apply
100Hz
level
to
get
RESULT
|
Attenuator
value.
P602-1(4):°
300mV
(—8.2dB)
R665/R666
TP1(TP2):
:
Clean
200Hz
sine-wave
Refer
to
Figs.
3-9
and
3-10.
.
RMS
time
|
5
Check
TP1(TP2):
constant
:
;
:
385uV
(—66.1dB)
+20%
..Decoder
nominal
6
Apply
1kHz
level
to
get
RESULT.
Attenuator
P602-1(4):
level
value...
300mV
(—8.2dB)
7
:
ae
R637/R638:
|
P603-1(4):
mt
ke
ve
oe
300mV
(—
a
dae)"3
Reference
1
—
.
VCA
symmetry
8
.
Frequency
response
(X-1000M)
Change
test
setup
to
as
Fig,
3-14
then.
adjust.
Return
to
Fig.
3-13
test
setup.
Change
oscillator
frequency
to
100Hz.
10kHz.
Change
oscillator
frequency
to
100Hz.
Change
oscillator
frequency
to
R657/R658
.
Frequency
11
response
(X-1000)
12
Change
oscillator
frequency
to
10kHz.
P603-1(4):
face’.
(Level
variation:
5mV
or
less)
P603-1
(4):
+5dB
+1dB
against
Ref,
1.
(476mV
~
599mV)
P603-1(4):
+9.4dB
+1dB
against
Ref.
1.
(789mV
~.994mvV)
P603-1(4):
—0.3dB
+1dB
against
Ref.
1.
(258mV
~
325mV)
P603-1(4):
+3,2dB
+1dB
against
Ref,
1.
(387mV
~
487mV)
A-relatively
straight
hori-..
zontal
line
on
the
‘
scope:
——
.
Decoder
effect-1
13
Apply
1kHz
level”2
to
get
RESULT
vatue.
Attenuator
P602-1(4):
300mV
(—8.
2dB)
Apply
1kHz
at
—30dB
against
Ref.
2.
Check
P603-1(4):
—60dB
+1dB
against
Ref.
1..:
{267uV.
~
337pV).
+
.
Decoder
effect-2
15
Apply
1kHz
at
+10dB
against
Ref.
2.
P603-1(4):
:
+20dB
#10B,
against
Ref..1.
(2.67V
~
3:
37V)
Distortion:
0.2%
or
less
Reference
2..:
17
X1000M/X-1000
3-6
ADJUSTMENT
AND
TEST
POINT
LOCATION
(
\
shee
Siabae
eel
i
paki
Fig.
3-15
REC
AND
PLAY
AMP
PCB
303/L304
.
Bias
trap
(record)
VU
meter
Dummy
Coil
R403/R404
Output
level
R313/R314
Playback
level
R429/R430
Record
level
R327/R328
Playback
EQ
(HIGH)
R515/R516
Record
bias
(EE)
R333/R334
Playback
EQ
(LOW)
R519/R520
Record
bias
(LH
If)
R637/R638
R657/R658
R665/R666
R737/R738
R757/R758
R765/R766
Nominal!
level
(DECODER)
VCA
symmetry
(DECODER)
RMS
symmetry
(DECODER)
Nominal
level
(ENCODER)
VCA
symmetry
(ENCODER)
RMS
symmetry
(ENCODER)
Fig.
3-16
DBX
PCB
18
19
X1000M
EM
1.
DULY
bhRRMRIANS
—-LHORENTORT.
2.
*
OM
MISA
FODUES,
SSDUOT
TRESS,
(3.
AMARSMARRMBiM
CS,
RRS
SLESYS
FAPyvIBEORASEALTFSU,
*
dbxbt
Udbxv—7
lkdbxf
VI—RL—-F
yy
KOBRGETT.
*®
dbx
AT
Alkdbxf
VI-—KRL—F
wy
FOE
ICH
OU
CRE
SNTTOET.
20
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