Denon DR-M3QHX User manual
Hi-Fi
Component
DENON
SERVICE
MANUAL
*
STEREO
CASSETTE
TAPE
DECK
MODEL
DR-M3QHX
NIPPON
COLUMBIA
CO..
LTD.
TABLE
OF
CONTENTS
FEATURES
.
2
SPECIFICATIONS.
3
BLOCK
DIAGRAM.
4
LEVEL
DIAGRAM
.
5
PART
NAMES
AND
FUNCTIONS
.
6-7
OUTLINE
OF
THE
MECHANISM
CONTROL
MICROCOMPUTER.
8
DISASSEMBLY
INSTRUCTIONS.
9-11
ADJUSTING
AND
CHECKING
THE
MECHANISM
SECTION
.12-14
ADJUSTING
THE
ELECTRICAL
SECTION.14-17
PARTS
LIST
OF
P.W.
BOARD
.18-19
PARTS
LIST
OF
EXPLODED
VIEW.
20
EXPLODED
VIEW
OF
CABINET
AND
CHASSIS
GROUP.
21
EXPLODED
VIEW
OF
MECHANISM
VM861
UNIT.
22
PARTS
LIST
OF
MECHANISM
VM861
UNIT
AND
OTHER
PARTS
.
23
FUNCTION
OF
REMOTE
CONTROL
1C
.
23
SCHEMATIC
DIAGRAM
OF
AUDIO
AMP
UNIT...
24
P.W.
BOARD
OF
KU-5881
AUDIO
AMP
UNIT.
25
SCHEMATIC
DIAGRAM
OF
POWER/LOGIC
UNIT.
26
P.W.
BOARD
OF
KU-5871
POWER/LOGIC
UNIT
AND
KU-5890
MECHANISM
UNIT
.
27
SCHEMATIC
DIAGRAM
OF
COUNTER
METER
UNIT
...
28
SEMICONDUCTORS.
29
WIRING
DIAGRAM
..
30
FEATURES
■
Computer-controlled
servo
technology
*
Closed-loop
dual-capstan
tape
transport.
*
Silent,
soft-touch
controls
provide
maximum
ea$e-of*use.
*
Computer-controlled,
full-logic
tape
controls
enable
fool-proof
operation.
■
Three-head
design
utilizes
DENON's
new
SF
record/playback
combination
head
assembly.
■
Computing
tape
counter
with
4-digit
readout
and
memory
stop.
■
Dolby-C
noise
reduction
systems
(Double
Dolby
System).
■
Dolby
HX
PRO
head
room
extension
system.
■
Wireless
remote
control.
■
Extended
range,
dual-color
fluorescent
peak
meters.
■
Auto
tape
selector.
■
Recording
Bias
adjustment.
(2)
SPECIFICATIONS
•
Type
.
•
Heads.
•
Motors.
•
Tape
Speed.
•
Fast
forward,
rewind
time
.
.
.
•
Recording
bias.
•
Overall
S/N
ratio
.
(at
3%
THD
level)
•
Overall
fequency
response.
.
.
.
•
Channel
separation.
•
Crosstalk.
•
Wow
Aflutter.
•
Inputs
line
.
•
Outputs
line
.
Headphone
.
•
Accessories.
•
Power
supply.
•
Power
consumption
.
•
Dimensions.
•
Weight.
Vertical
tape
loading
4-track
2-channel
stereo
cassette
tape
deck
SF
Record/Playback
combination
head
x
1
Erase
head
(Ferrite)
x
1
Electronic
servo
DC
motor
(for
capstan)
x
1
DC
motor
(for
reel
winding)
x
1
4.8
cm/sec.
Approx.
90
sec.
with
a
C-60
cassette
105
kHz
Dolby
C
NR
on
...
more
than
75
dB
(CCIR/ARM)
25
-
19,000
Hz
±3dB
(at
-20
dB
METAL
tape)
More
than
40
dB
(at
1
kHz)
More
than
65
dB
(at
1
kHz)
0.045%
wrms
(JIS
method)
lOOmV
(—18
dB)
input
level
at
maximum
Input
impedance:
50
kohm
unbalanced
775mV
(0
dB)
output
level
at
maximum
(with
47
kohm
load,
recorded
level
of
200
pwb/mm)
1.2mW
output
level
at
maximum
(optimum
load
impedance
8
ohm
—
1.2
kohm)
Parallel
pin
cord
x
2
50
Hz/60
Hz
compatible,
voltage
is
shown
on
rating
label
18W
434
(W)
x
115
(H)
x
286
(D)
mm
5.6
kg
■
Above
specifications
and
design
styling
are
subject
to
change
for
improvement.
■
Dolby
noise
reduction
and
HX
PRO
headroom
extension
manufactured
under
license
from
Dolby
Laboratories
Licensing
Corporation.
HX
PRO
riginated
by
Bang
and
Olufsen.
“Dolby",
the
double-D
symbol
and
"HX
PRO"
are
trademarks
of
Dolby
Laboratories
Licensing
Corporation.
WARNING:
1.
Component
parts
Parts
marked
with
^
and/or
shading
in
this
service
manual
have
special
characteristics
important
to
safety.
Besure
to
use
the
specified
parts
for
replacement.
2.
Leakage
current
Before
returning
the
appliance
to
customer,
test
the
leakage
current
when
the
power
plug
is
connected.
Use
a
calibrated
(with
an
error
of
not
more
than
5%)
leakage
current
tester
and
measure
the
leakage
current
from
any
exposed
metal
to
the
earth
ground.
Reverse
the
power
plug
polarity
and
test
the
above
again.
Any
current
measured
MUST
NOT
EXCEED
0.5
mitliamps.
Corrective
measure
must
be
taken
if
it
exceeds
the
limit.
(3)
LINE
IN
--CH
@
BALANCE
VR303
26
IC102
TEA0665
INPUT
VR
VR304
ENCOOER
SLOCK
BLOCK
DIAGRAM
»
LEVEL
DIAGRAM
PLAYBACK
SYSTEM
TCC-130
(400Hz)
DOLBY
B-Typ»
RECORDING
SYSTEM
NPUT
FREQUENCY
400Hz
DOLBY
NR
SYSTEM
0dB=0.775V
(
5
)
PART
NAMES
AND
FUNCTIONS
©
®
©
®
®
©
®
®
®
®
1.
POWER
switch
Controls
the
supply
of
AC
power
to
the
deck.
One
push
turns
the
deck
on,
a
second
push
turns
it
off.
The
deck
remains
in
a
stand-by
{non-operative)
mode
for
approxi¬
mately
4
seconds
after
it
is
switched
on.
2.
EJECT
button
Press
this
button
to
eject
the
cassette.
When
the
deck
is
operating
(tape
is
running),
press
the
stop
{
■
)
key
first
to
stop
the
tape
transport;
then
press
the
EJECT
button.
3.
COUNTER
RESET
button
Operation
of
the
button
resets
the
counter
to
all
zero.
4.
MEMORY
STOP
button
During
rewinding
operations,
the
tape
will
stop
at
the
"0000"•
counter
point
automatically
when
this
button
is
pressed
in.
5.
DOLBY
NR
switches
The
left
Dolby
NR
switch
activates
(in)
or
deactivates
(out)
the
deck’s
Dolby
noise
reduction
circuitry.
The
right
switch
selects
between
Dolby
B-Type
(out)
or
C-Type
NR
(in).
6.
MPX
FILTER
switch
The
MPX
FILTER
switch
should
be
used
to
prevent
inter¬
ference
with
the
Dolby
NR
circuit
when
making
Dolby
NR
encoded
recordings
of
FM
stereo
programs.
When
making
Dolby
NR
encoded
recordings
from
any
program
source
other
than
FM
stereo,
leave
this
switch
in
the
"off"
(out)
position.
7.
MONITOR
switch
The
SOURCE
(in)
position
of
this
switch
allows
you
to
monitor
the
source
program
before
it
is
recorded.
The
TAPE
(out)
position
of
this
switch
is
used
for
tape
play¬
back
monitoring
or
simultaneous
monitoring
during
record¬
ing.
8.
BIAS
FINE
ADJ
control
(for
NORMAL
and
Cr0
2
tape)
Adjust
the
bias
according
to
the
tape
characteristics.
Standard
biasing
is
obtained
at
the
center
click-stop
posi¬
tion.
9.
BALANCE
controls
This
is
the
knob
to
adjust
the
recording
level
balance
be¬
tween
the
left
and
right
channels.
Turn
it
counterclock¬
wise
to
reduce
the
right
channel's
level
and
clockwise
to
reduce
the
left
channel's.
Usually,
put
the
knob
at
the
center
click
position.
10.
PHONES
jack
For
private
music
enjoyment
without
disturbing
others,
or
for
monitoring
a
recording,
a
set
of
headphones
may
be
plugged
in.
Impedance
should
be
from
8
to
1200
ohms.
11.
OUTPUT
LEVEL
control
This
control
adjusts
playback,
recording
monitor,
and
headphones
output
levels
for
the
both
channels
simultane¬
ously.
12.
INPUT
LEVEL
controls
The
recording
input
level
is
adjusted
by
this
knob.
The
levels
in
the
left
and
right
channels
can
be
changed
sim¬
ultaneously.
(
6
)
<
T
*
13.
Cassette
compartment
cover
When
a
cassette
tape
is
inserted
and
the
door
is
closed,
the
tape
is
automatically
wound
up
for
about
0.3
sec
to
eliminate
the
slack.
14.
TAPE
COUNTER
A
four-digit
readout
indicates
the
present
tape
count
posi¬
tion.
15.
FLUORESCENT
PEAK
METERS
These
meters
indicate
recording
or
playback
peak
levels
for
each
channel.
16.
MEMORY
indicator
When
the
memory
switch
is
turned
on,
the
letters
of
"MEMO"
will
be
displayed.
17.
NR
SYSTEM
indicator
This
indicator
light
is
interlocked
with
the
Dolby
NR
switch
and
informs
the
user
that
Dolby
NR
is
in
use
as
well
as
which
IB
nr
CiTvoe
18.
MONITOR
indicator
This
indicator
light
is
interlocked
with
the
MONITOR
switch
to
inform
the
use
of
the
selected
monitoring
source
-
TAPE
or
SOURCE.
19.
TAPE
SELECT
indicator
This
indicator
light
is*
interlocked
with
the
Auto
Tape
Select
feature
which
automatically
adjusts
the
deck
to
the
type
of
tape
in
use.
(NORMAL,
Cr0
2
or
METAL).
20.
REMOTE
CONTROL
photosensitive
window
•The
window
receives
commands
from
the
infrared
remote
control
unit.
•Operate
the
remote
control
unit
(RC-101)
directing
to¬
ward
the
photosensitive
window.
21.
T
ape
transport
controls
(7)
I
•
Outline
of
the
Mechanism
Control
Microcom¬
puter
The
function
of
the
microcomputer,
which
is
applied
to
the
0)
Stable
and
accurate
cam
rotation
position
control
is
uni-directional
transport
cam
drive
control
cassette
deck
required
since
a
cam
drive
method
is
employed
to
mechanism,
will
receive
an
outside
signal
from
the
opera-
make
the
mechanism
silent.
Accurate
rotation
position
tion
switch
(operations
such
as
PLAY,
REC,
STOP,
FF)
control
is
performed
by
using
a
cam
drive
with
a
rotary
during
the
recognition
of
the
current
condition
or
from
the
encoder
detected
digital
feedback
servo,
surrounding
circuits
of
the
microcomputer
(counter,
cam
(2)
Since
the
leading
time
of
the
cam
drive
is
slower
when
encoder,
reel
pulse,
etc.)
and
sends
the
appropriate
con-
compared
to
that
of
the
plunger
method,
problems
will
trol
signal.
a
r
»
5
e
when
attempting
record/pi
ay
back
or
stop
at
the
To
the
mechanism:
rotational
direction
of
the
reel
motor,
designated
tape
position
from
FF
or
REW,
since
tape
speed,
stop,
rotational
direction
of
the
cam
motor,
stop.
overrun
occurs.
To
the
counter:
makes
an
output
of
the
mechanism
run
mode
command
(REW,
FF,
PAUSE,
PLAY).
To
the
display:
REC,
PAUSE
(REC
MUTE
during
flash).
In
addition,
the
following
points
are
taken
into
consider¬
ation.
(
8
)
DISASSEMBLY
INSTRUCTIONS
1.
H
o
w
to
Remove
the
Front
Panel
(1)
Unscrew
the
4
screws
309
from
both
sides
of
the
top
cover
240
and
take
off
the
top
cover
by
pulling
it
up.
(2)
Press
the
eject
knob
231,
open
the
cassette
window
238
and
take
off
the
mechanism,
as
shown
in
the
dia¬
gram.
Note:
Be
careful
when
handling
the
cassette
window,
as
it
is
easily
scratched.
(3)
T
he
front
panel
can
be
removed
by
unscrewing
the
3
upper
screws
(3x8
CFTS
S
tight)
307
from
the
front
panel
233
and
the
3
lower
screws
(3x8
CBTS
P
tight)
2.
H
o
w
to
Remove
the
Mechanisms
(1)
Remove
the
top
cover
240
and
the
front
panel
233.
(Refer
to
section
1)
(2)
Unscrew
the
2
mechanism
holding
screws
(3x6
CBTS
S
tight)
304
from
the
bottom
surface
of
the
chassis
201.
(3)
Unscrew
the
2
screws
(3x6
CBTS
S
tight)
304
holding
the
angle
210
and
the
mechanism
207
and
the
3
chassis
holding
screws
301.310
and
remove
the
angle.
(4)
Remove
the
connectors
with
lead
wires,
which
runs
from
the
mechanism
section,
from
the
circuit
board.
Audio
circuit
board
side
4P
connector
CN301
6P
connector
CN302
Logic
circuit
board
side
6P
connector
CN1
7P
connector
CN3
8P
connector
CN2
Note:
When
assembling,
check
to
make
sure
the
con¬
nectors
are
inserted
correctly.
(5)
Pull
out
the
power
switch
lever
230
from
the
power
switch
259.
(6)
Remove
the
eject
knob
231.
(7)
The
mechanism
can
be
removed
by
holding
the
mecha¬
nism
and
pulling
up.
Note:
When
assembling,
do
so
after
checking
to
make
sure
the
2
stay
holes
on
the
lower
side
of
the
mechanism
unit
are
matched
with
the
chassis
protrusions.
3.
H
o
w
to
Remove
the
Meter
Window
and
the
Color
Filter
(1)
Remove
Top
Cover
(240)
and
Front
Panel
(233)
(Refer
to
Section
1)
(2)
Meter
Window
(220)
can
be
removed
by
pulling
up.
(3)
Color
Filter
(221)
cam
be
removed
after
Meter
Window
(220)
is
removed.
4.
H
o
w
to
removed
the
Meter
Holder
and
the
Counter/Meter
Circuit
Board,
the
LED
circuit
Board.
(1)
Remove
the
top
cover
(240)
and
the
front
panel
(233).
(Refer
to
section
1)
(2)
Remove
the
angle
(210).
(Refer
to
section
2)
(3)
Remove
the
2
screws
(3x8CFTS
S
tight)
(307)
which
secure
meter
holder
(242).
Then
the
meter
holder
can
be
removed.
(4)
By
unscrewing
the
2
screws
(3x6
CBS)
(303)
holding
the
counter/meter
circuit
board,
it
can
be
removed.
(5)
By
unscrewing
the
1
screw
(3x6
CBS)
(303)
holding
the
LED
circuit
board,
it
can
be
removed.
(9)
5.
How
to
Remove
the
Front
Esc
Ass'y
(1)
Remove
the
top
cover
(240)
and
the
front
panel
(233).
(Refer
to
section
1)
(2)
Remove
the
angle
(210).
(Refer
to
section
2)
(3)
Remove
the
meter
window
(220)
and
the
color
filter
(221).
(Refer
to
section
3)
(4)
Unscrew
the
2
nuts
holding
the
output
volume
(237)
and
the
headphone
jack
(255).
Then
the
front
esc
ass'y
(206)
can
be
removed.
6.
How
to
Remove
the
Volume
Circuit
Board
(1)
Remove
the
top
cover
240
and
the
front
panel
233.
(Refer
to
section
1)
(2)
Remove
the
angle
210
(Refer
to
section
2)
(3)
Remove
the
meter
window
220
and
the
color
filter
221.
(Refer
to
section
3)
(4)
Remove
the
front
escuchion
206.
(Refer
to
section
4)
(5)
By
unscrewing
the
3
screws
(3x8
CBTS
P
tight)
301
holding
the
Volume
plate
245
and
loosening
the
2
hooks
on
the
front
escuchion
ass'y
206
holding
the
Volume
circuit
board
244,
it
can
be
removed.
(6)
Unscrew
the
3
nats
holding
the
3
Volumes.
Then
the
Volume
circuit
board
244
can
be
removed.
7.
How
to
Remove
the
Control
Circuit
Board
(1)
Remove
the
top
cover
240
and
the
front
panel
233.
(Refer
to
Section
1)
(2)
Remove
the
angle
210.
(Refer
to
section
2)
(3)
Remove
the
meter
window
220
and
the
color
filter
221.
(Refer
to
section
3)
(4)
Remove
the
front
escuchion
206.
(Refer
to
section
4)
(5)
By
unscrewing
the
3
screw
(3x8
CBTS
P
tight)
301
holding
the
control
circuit
board
and
loosening
the
2
hooks
on
the
front
escuchion
Ass’y
206
holding
the
control
circuit
board
204,
it
can
be
removed.
Note:
When
replacing
the
tact
switch
224,
always
check
to
make
sure
that
it
is
not
floating
above
the
circuit
board.
If
it
is
floating,
the
switch
will
be
in
the
on
condition
when
the
set
is
assembled.
8.
H
o
w
to
Remove
the
Audio
Circuit
Board
(1)
Remove
the
top
cover
240
and
the
front
panel
233.
(Refer
to
section
1)
(2)
Remove
the
angle
210
(Refer
to
section
2)
(3)
Remove
the
meter
holder
242.
(Refer
to
section
4)
(4)
Remove
the
front
escuchion
206.
(5)
Remove
the
volume
plate
245.
(Refer
to
section
6)
(6)
Remove
the
control
circuit
board
204.
(Refer
to
section
7)
(7)
Remove
the
connectors
from
the
audio
circuit
board
203.
(8)
Unscrew
the
4
bottom
cover
holding
screws
(3x8
CBTS
P
tight)
301
on
the
back
side
of
the
chassis
201
and
remove
the
bottom
cover
218.
(9)
By
loosening
the
2
hooks
on
the
chassis
holding
the
audio
circuit
board
203,
the
audio
circuit
board
can
be
removed.
Note:
Most
repairs
to
the
audio
circuit
board
can
be
performed
by
removing
the
bottom
cover
on
the
chassis.
Refer
to
the
above
procedure
only
when
necessary.
When
reassembling,
follow
the
procedures
in
reverse
order;
however,
if
each
of
the
various
parts
are
not
assembled
properly
in
their
respective
position,
the
set
cannot
be
assembled.
When
assembling,
check
the
work
of
each
step
carefully.
(
1
0
)
«
1
9.
H
ow
to
Remove
the
Logic
Circuit
Board
(1)
Remove
the
top
cover
240.
(Refer
to
section
1)
(2)
Remove
the
various
connectors
from
the
logic
circuit
board
202.
(3)
Unscrew
the
screws
(3x8
CBTS
P
tight)
301
holding
the
logic
circuit
board.
{4}
By
pulling
up
the
logic
circuit
board
202,
it
can
be
removed.
10.
How
to
Remove
the
Power
Switch
Circuit
Board
(1)
Remove
the
top
cover
240.
(Refer
to
section
1)
(2)
Unscrew
the
1
screw
(3x8
CBTS
P
tight)
301
holding
the
bracket
216
of
the
power
switch
circuit
board
215.
(3)
By
pulling
the
power
switch
lever
230
out
of
the
power
switch
259,
the
power
switch
circuit
board
215
can
be
removed
upwards.
11.
How
to
Remove
the
Remote
Sensor
Circuit
Board
(1)
Remove
the
top
cover
(240)
and
the
front
panel
(233).
(Refer
to
Section
1)
(2)
Remove
the
angle
(21).
(Refer
to
Section
2)
(3)
Remove
the
meter
holder
(242).
(Refer
to
Section
4)
(4)
By
unscrewing
the
1
screw
(3x6
CBS)
(303)
holding
the
Remote
Sensor
Circuit
Board,
it
can
be
removed.
(ID
i
«
1
ADJUSTING
AND
CHECKING
THE
MECHANISM
SECTION
1.
Replacing
the
Pinch
Roller.
Before
replacing
the
pinch
roller,
clean
the
tape
contact
surface
of
the
pinch
roller
and
the
capstan
shaft.
Most
causes
of
poor
tape
transport
can
be
traced
to
dirty
pinch
rollers
and
capstan
shafts.
The
right
side
pinch
roller
23
can
be
taken
out
by
remov¬
ing
spring
24
and
slit
washer
317.
In
the
same
manner,
the
left
side
pinch
roller
104
can
be
taken
out
by
remov¬
ing
spring
106
and
slit
washer
317.
After
replacing,
play
a
padless
C-90
tape
and
check
for
tape
curls
at
the
head
tape
guide
section.
In
addition,
in
the
playback
mode,
check
to
make
sure
that
the
right
side
pinch
roller
contacts
the
capstan
shaft
before
the
left
side
pinch
roller
contacting.
3.
R
e
placing
the
Record/Ptayback
Head
*
Before
replacing,
remove
the
front
panel
233.
(1)
H
o
w
to
remove
the
R/P
HEAD.
1}
Next,
Take
out
the
azimuth
adjustment
NUT
311,
tilt
adjustment
NUT
311,
and
the
height
adjustment
Special
nut
10
loosening
them
alternately.
If
they
are
not
loosened
alternately,
the
R/P
HEAD
base
may
become
warped.
2)
By
unsoldering
the
HEAD
WIRES
on
the
circuit
board
section
of
the
R/P
HEAD,
the
entire
R/P
HEAD
can
be
taken
off
the
mechanism
unit.
<X>
R/P
head
Correct
P.
Roller
arm
L
(
JO)
Special
not
Tape
guide
2
nut
P.
Roller
arm
R
Tape
E.
head
Special
nut
/
2
nut
R/P
head
Defective
Curled
Curled
Tape
travel
2.
Checking
the
Pressure
Force
of
the
Pinch
Roller
In
the
playback
mode,
hook
a
spring
weight
onto
the
bracket
at
the
center
of
the
pinch
roller.
After
separating
the
pinch
roller
from
the
capstan
shaft,
allow
the
pinch
roller
to
contact
the
capstan
shaft
again.
When
the
pinch
roller
starts
to
rotate,
check
to
make
sure
the
rod
type
spring
weight
reading
is
350g—450g
for
the
right
side
and
150g
~
250g
for
the
left
side.
If
it
is
not
within
the
normal
range,
replace
the
pinch
roller
spring
24
or
106.
Pinch
roller
spring
Capstan
shaft
.41.
/
Pinch
roller
Right
side
350g
~
450g
Left
side
150g
~
250g
(S7j)
2n
®>2N
(Azimuth
adj..nut)
(Tilt
adj.
nut)
(2)
H
ow
to
assemble
the
R/P
HEAD.
Reverse
the
above
(1)
procedures
for
removing
the
R/P
HEAD.
*
Solder
the
HEAD
WIRES
according
to
the
diagram
above.
ri+i
U+l
M|—i
U-l
1
—I
Orange
Yellow
White
4.
A
djusting
the
R/P
HEAD
(1)
H
eight
adjustments
(Use
the
head
adjusting
jig
THG-801
1)
Set
the
THG-801
tool
plate
on
the
mechanism
unit;
turn
the
height
adjustment
Special
nut
10
and
adjust
so
that
the
3.8
mm
measure
section
of
the
THG-801
{too!
grip)
can
pass
without
contacting
the
tape
guide
of
the
R/P
HEAD
9.
2)
When
adjusting
the
height,
make
sure
the
R/P
HEAD
is
not
tilted
by
turning
the
azimuth
adjustment
nut
311
nut,
and
checking
with
your
eyes.
*
Never
allow
the
THG-801
{tool
grip)
to
hit
the
tape
contact
surface
of
the
R/P
HEAD
strongly.
It
may
scratch
the
surface.
{
1
2
)
1
s
(2)
A
djusting
Tilt
Angie
1)
Set
the
THG-801
Tool
Plate
on
the
Mechanism
Unit
and
then
place
the
THG-801
Tool
Grip
on
the
R/P
Head,
and
check
the
Tilt
Angle
between
THG-801
Tool
Plate
and
THG-801
Tool
Grip.
If
the
THG-801
Tool
Grip
is
tilting
toward
the
front,
loosen
Tilt
with
nut
{311).
If
the
THG-801
(Tool
Grip)
is
tilting
toward
the
rear,
tighten
it.
Adjust
the
Tilt
Adjustment
nut
(311)
until
the
THG-801
Tool
Grip
becomes
parallel
with
the
THG-801
Tool
Plate.
2)
If
the
Tilt
Angle
is
adjusted
more
than
once,
height
Adjustment
may
slip.
Always
make
sure
to
check
height
adjustment.
If
height
has
slipped,
adjust
it
again.
After
adjustment,
fix
screw.
(3)
A
zimuth
adjustments
Play
back
the
A*BEX
TCC-153
test
tape.
Turn
the
azimuth
adjustment
nut
and
adjust
so
that
A
of
the
resurge
wave
form
is
maximum
and
B
is
minimum.
After
the
azimuth
adjustments,
re-check
the
head
height
with
the
THG-801
to
make
sure
the
height
has
not
deviated.
MTT-U4
*
After
the
adjustments,
apply
anaerobic
adhesive
on
the
positions
indicated
in
the
diagram.
Anaerobic
adhesive
5.
A
djustment
and
Replacement
of
Erasing
Head
(1)
Height
Adjustments
Set
the
THG-801
Tool
Plate
on
the
mechanism
unit.
Using
a
surface
measure
of
3.8
mm
from
the
THG-801
Tool
Grip,
turn
adjustment
nut
(311)
and
(171)
and
adjust
the
height
of
Erasing
Head's
center
to
coincide
with
the
center
of
the
THG-801
Tool
Grip.
After
adjustment,
place
the
THG-801
Tool
Grip
on
the
Erasing
Head,
check
to
see
that
the
THG-801
Tool
Plate
and
the
THG-801
Tool
Grip
are
parallel,
and
that
the
Tilt
Angle
has
not
changed.
Lock
after
adjustment.
(2)
Tilt
Angle
Adjustment
Set
the
THG-801
Tool
Plate
on
the
mechanism
unit.
Place
the
THG-801
Tool
Grip
on
the
Erasing
Head,
and
check
the
gap
between
the
THG-801
Tool
Plate
and
the
Tool
Grip.
If
the
THG-801
Tool
Grip
is
tilting
toward
the
front,
loosen
the
Tilt
adjustment
nut
(311).
If
it
is
tilting
toward
the
rear,
tighten
it
and
adjust
the
Tilt
adjustment
nut-
(311)
until
the
THG-801
Tool
Grip
becomes
parallel
with
the
THG-801
Tool
Plate.
CAUTION:
After
adjusting
the
Tilt
Angle,
height
adjust¬
ment
may
sometimes
be
warped.
Recheck
height
adjustment.
If
it
is
warped,
readjust
the
height.
After
adjusting,
fix
nuts
(311)
and
(171).
(3)
Erasing
Head
Replacement
Erase
Head
may
be
replaced
after
removing
nuts
(311)
and
(171}
which
affix
it
to
the
deck
mechanism.
After
replacement,
adjust
the
height
and
the
Tilt
angle.
1
6,
Height
Adjustment
of
the
Tape
Guide
Set
the
THG-801
jig
plate
onto
the
mechanism
unit
and
ad¬
just
the
height
by
rotating
the
height
adjustment
nut
311
so
that
the
3.8mm
section
of
the
THG-801
jig
can
pass
through
without
contacting
the
tape
guide
section
of
tape
guide
103.
7.
Checking
the
Take-up
Torque
Load
the
cassette
type
torque
meter.
Check
to
make
sure
that
the
torque
meter
average
reading
is
within
40
80
g-cm
during
playback.
If
it
is
not
within
this
range,
check
the
voltage
(4.3V
±
0.3V)
of
the
reel
motor.
If
the
voltage
is
low,
the
torque
will
be
weak;
if
it
is
high,
the
torque
will
be
strong.
In
addition,
check
for
reel
thrust
movement
in
section
8.
(13)
i
8.
Adjusting
the
Reel
Thrust
Movement
Check
to
make
sure
that
the
reel
thrust
movement
is
within
0.2—0.4
mm.
9.
Checking
the
FF
and
REW
Torques
*
When
using
the
cassette
type
torque
meter.
Check
to
make
sure
the
torque
meter
indicates
more
than
80
~
160
g*cm
at
the
end
of
FF
and
REW.
*
When
using
a
modified
cassette
half.
Load
the
modified
cassette
half;
hook
the
end
of
the
dial
tension
meter
(full
scale
100—300
g)
onto
the
triangle
section.
In
the
FF
(REW)
mode,
feed
the
tape
in
at
a
rate
somewhat
slower
than
the
take
up
speed.
Check
to
make
sure
the
dial
tension
meter
reads
more
than
60
g-cm.
10.
Checking
the
Back
Tension
Torque
During
Record/Playback
Load
the
cassette
type
torque
meter;
check
to
make
sure
the
torque
meter
reads
between
5^13
g-cm
during
play¬
back
and
that
there
is
no
unevenness.
If
it
is
not
within
this
range,
check
the
section
on
adjust¬
ing
the
reel
trust
movement;
or
replace
the
spring
109.
11.
Checking
the
FF
and
REW
Times
Load
a
C-60
cassette
tape;
check
to
make
sure
the
tape
is
fast
forwarded
or
rewound
within
70—110
seconds.
If
it
is
not
within
this
range,
check
sections
8
and
10.
12.
Checking
the
Operation
of
the
Erase
Preven¬
tion,
Metal
and
Chrome
Switch
Operation
Arms
Check
to
make
sure
the
operation
arms
58,
59
operate
the
switches
positively,
depending
on
whether
or
not
there
are
holes.
13.
Checking
the
EJECT
Switch
To
check
the
operation
of
the
EJECT
SW
with
only
the
mechanism
unit,
make
sure
the
angle
205
operates
the
switch
positively
when
the
hook
lever
203
is
operated.
14.
Checking
the
Gap
Between
the
Pulse
Detection
LED
and
the
Reel
Ass'y
Check
to
make
sure
the
gap
between
the
surface
of
the
shutter
section
of
the
reel
ass'y
and
the
LEDs
is
approxi¬
mately
1
mm.
25
Reef
Ass'y
Approximately
1
mm
ADJUSTING
THE
ELECTRICAL
SECTIONS
•
Measuring
instruments
necessary
for
adjustments
(1)
Audio
signal
generator
(2)
Variable
resistance
attenuator
(3)
Electronic
voltmeter
14)
Oscilloscope
(5)
Frequency
counter
(6)
Adjustment
screwdriver
(7)
Trap
coil
adjustment
square
stick
(8)
Test
tapes
(SONY
TY-224,
A-BEX
TCC-153,
TCC-130
(A-BEX
TCC-262)
(OENON
DX3H,
HD7E)
(9)
Transport
Check
cassette
tape
(A-BEX
TCC-902)
Mirror
tape
•
Cautions
on
adjusting
(1)
Before
adjusting,
clean
the
head
surface,
capstan
and
the
pinch
roller
with
a
gauze
or
a
cotton
swab
moisten¬
ed
with
alcohol.
(2)
Demagnetize
the
R/P
HEAD
and
the
E.
HEAD
with
a
head
eraser.
(3)
Completely
demagnetize
the
adjustment
screwdriver.
(4)
Unless
instructed
otherwise,
set
the
various
controls
as
follows:
—
INPUT
volume.
maximum
—
OUTPUT
LEVEL
volume.
maximum
-
DOLBY
NR
switch
.OFF
-MONITOR
switch.TAPE
1.
T
ape
Transport
Check
Load
the
transport
check
cassette.
In
the
operational
mode,
illuminate
the
fixing
guides
of
the
R/P
HEAD
with
a
lamp
and
check
to
make
sure
the
tape
edge
does
not
come
in
contact
with
the
tape
guide
section.
The
tape
transport
is
the
most
important
element
in
de-
terming
the
performance
of
a
cassette
deck.
Avoid
moving
the
various
adjustment
screws,
nuts,
etc.,
as
much
as
possible.
The
THG-801
Tool
Plate
is
a
tool
used
primarily
for
precisely
adjusting
the
height
of
the
tape
guide
attached
to
a
tape
head.
This
tools
is
indispensable
in
repairing
various
heads,
when
replacing
heads,
and
for
design
purposes,
in
order
to
deter¬
mine
the
location
measurements
for
mechanical
attach¬
ments.
Even
when
the
height
of
the
tape
guide
is
accurately
meas¬
ured,
during
actual
tape
play,
the
tape
may
sometimes
warp.
This
is
due
to
slight
errors
in
dimensions
of
those
parts
which
actually
come
in
contact
with
the
tape,
such
as
cas¬
sette
halves,
heads,
pinch-rollers,
capstan
shaft,
etc.
There¬
fore
a
mirror
tape
is
used
to
confirm
proper
running
of
the
tape.
In
this
way,
the
THG-801
Tool
Plate
and
mirror
tape
are
both
used
to
insure
good
tape
running.
f
After
having
confirmed
that
the
setting
is
correct,
the
mir¬
ror
tape
may
warp
anyway.
In
order
to
establish
the
titlt
angles
of
the
recording/plaback
head
and
the
erase
head,
adjust
(by
turning
1/4
-
1/2
turns)
the
level
adjustment
nut
(311)
of
the
tape
guide
(103).
Refer
to
the
pages
on
"Adjusting
and
checking
the
Mechanism
Section"
when
replacing
or
adjusting
the
R/P
HEAD.
2.
A
d
justing
the
Azimuth
(1)
After
completing
the
tape
transport
check
load
the
test
tape
(A-BEX
TCC-153)
(2)
Play
back
the
test
tape;
adjust
the
azimuth
nut
so
that
section
A
of
the
resurge
wave
form
is
maximum
and
section
B
is
minimum.
MTT-II4
3.
C
hecking
and
Adjusting
the
Tape
Speed
1)
Connect
the
frequency
counter
to
the
LINE
OUT
terminal
and
load
the
test
tape
(SONY
TY-224).
2}
Playback
a
test
tape.
At
about
halfway
through
the
tape,
where
the
tape
transport
is
stable,
adjust
the
adjustment
points
on
the
back
of
the
capstan
motor
so
that
the
frequency
counter
will
have
a
reading
with¬
in
the
the
range
of
3,000
Hz
±
6Hz.
HTT-m
4.
A
djusting
the
Input
Sensitivity
(1)
Set
the
MONITOR
switch
to
SOURCE
position,
the
operational
mode
at
STOP.
Supply
a
400
Hz
signal
to
the
LINE
IN
terminal
and
set
the
input
signal
level
(approx.
—18
dB)
so
that
the
output
level
at
the
LINE
OUT
TERMINAL
(L
ch)
becomes
OdB.
DC
motor
Adjustment
Points
Capstan
motor
(2)
At
the
same
time,
check
to
make
sure
the
R
ch
output
level
is
also
OdB.
REC
Amp
5.
A
djusting
Playback
Section
(1)
Adjusting
the
playback
level
Play
back
the
Dolby
standard
level
test
tape
(A-BEX
TCC-130)
and
adjust
RT-101
(L
ch),
RT-201
(R
ch)
so
that
the
LINE
OUT
voltage
becomes
0
dB
(0.775V).
(2)
Adjusting
the
playback
frequency
response
Play
back
the
test
tape
(A-BEX
TCC-262)
and
check
to
make
sure
that
the
frequency
response
meets
the
specifications
in
the
diagram.
(15)
>
I
t
*
K
6.
Adjusting
the
FL
Meter
After
adjusting
the
playback
level,
playback
the
test
tape
(A-BEX
TCC-130)
and
adjust
RT401
(L
ch),
RT402
(R
ch)
so
that
the
FL
meter
indicates
OdB
when
the
LINE
OUT
terminal
level
is
OdB
(0.775V).
7.
Adjusting
the
Recording
Section
(1)
A
djusting
the
record/play
back
overall
frequency
response.
1)
Load
the
test
tape
HD7E/C60;
record
a
signal
with
an
input
level
of—38
dB,
1
KHz
at
the
LINE
IN
terminal;
play
back
this
recording.
2)
Change
the
frequency
of
the
input
signal
to
12kHz,
record
and
playback;
adjust
RT104(Lch),
RT204
(R
ch)
so
that
the
characteristic
standards
meet
the
following
diagram
when
compared
to
the
1kHz
signal
output
level.
Record/Playback
Overall
Frequency
Response
Tape:
H07E
Dolby:
off
Level:
—20dB
from
Dolby.
(16)
(2)
Adjusting
the
record/pi
ay
back
levels
1)
Load
the
test
tape
HD7E/C-60
and
record
a
signal
of
1kHz
(-38
dB).
2)
Adjust
RT102
(L
ch),
RT202
(R
ch)
so
that
the
output
level
is
the
same
when
the
MONITOR
switch
is
switched
from
SOURCE
to
TAPE
position.
(3)
Checking
the
Dolby
C
record/playback
overall
fre¬
quency
response
1)
Set
the
DOLBY
NR
switch
to
the
"C"
position.
2)
Using
the
test
tapes
DXM,
HD7E/C-60.DX3H,
per¬
form
record/playback
in
the
same
manner
as
7-(1).
3)
Check
to
make
sure
that
the
record/playback
overall
frequency
response
meets
the
specifications
in
the
diagram.
Dolby
C
Record/Playback
Overall
Frequency
Response.
Tape:
HD7E
Dolby:
on,
C
Level:
—
20dB
from
Dolby
OOLBY-C
m
RE
CORO/PLAY
BACK
•
Beat
Interference
Beat
interference
may
result
if
the
unit
is
used
close
to
an
AM
tuner.
In
this
case
separate
the
distance
between
the
tuner
and
the
cassette
deck.
(17)
KU-5881
AUDIO
PWB
UNIT
Ref.
No.
Part
No.
Part
Name
Remarks
SEMICONDUCTOR
GROUP
IC101,102,
201,202
JC3G1
(C302.303
IC304
IC305
TR101,106'
27301
201,206
TR306
27400:
TR307,308j
27302-
TR
102,202
27500-
TR
105,205
26900
TR301
-303
305,309
-311
TR
103.
203,
104,
204,
304
D301,
303
-305
RESISTOR
GROUP
2630353002
I
TEA0665
2630317006
2630257001
2630355000
2630354001
1
2730178022
2740036002
i
2730245023
2750048909
2690014006
M
5220P
M-5218P
AN6256
M
PCI
297CA
2SC1740
(R/S)
2SD468
(C)
2SC2603E/F
2SK381
<D)/{E)
DTA124
XS
2690015005
DTC124
XS
2760049008
IS2076
vetmjtr-
OUTPUT
VR
10KDA
8IAS
FINE
ADJ.
500DB
SAL.
VR
250KQB
INPUT
VR
100KHA
P8
GAIN
lOOKfiB
REC
CAL
22KftB
BIAS
CAPACITOR
GROUP
C102.202
172,272
C101,201
C325
Cl
72.272
C141.241
Cl
63,263
C161,261
Cl
59,259
C155,255,321
Cl
40,240
C318
C306,307
310,311
Cl
74,274
C320
Cl
77,277,326
Ceramic
2533627000
CC45SL1H101J
100PF
50V
2533635005
CC45SL1
H221J
220PF
50V
2534355009
CC45SL2H050C
5PF
500V
2531055027
CK45B1H821K
820PF
50V
2531059007
CK45B1HI22K
0.0012mF
50V
2531005006
CK45B1
HI
52K
0.001
5mF
50V
2531060009
CK45B1
HI
82K
0.001
8mF
50V
2531006005
CK45B1H222K
0.0022mF
50V
2531007004
CK45B1H332K
0.0033mF
50V
2531062007
CK45B1H392K
0.0039m
F
50V
2531023004
CK45F1H472Z
0.0047
M
F
50V
2531024003
CK45F1H103Z
0.01
mF
50V
2539030060
CK45-1E103K
0.01
mF
25V
2539035007
CK45-1E123K
0.01
2m
F
25V
2539030086
CK45-1E223K
0.022mF
25V
Ref.
No.
Cl
76.276
Cl
09.209
114,214
Cl
44,244
149.249
Cl
65,265
Cl
73,273
Cl
06,206,119
219,138,238
317
Cl
56,256
309,319
Cl
04,204,108
208,115,215
118,218,143
243,150.250
153,253,154
254,303,304
305,312,313
314
Cl
64,264,301
302.315,316
148,24#
Cl
10,210,113
213.145.245
148,248
Cl
11,211,112
212.146.246
147,247
Part
No,
2539030099
2539031001
Part
Name
CK45-1E333K
CK45-1E473K
2539031001
CK45-1E473K
2539031014
2531054086
CK45-1E683K
CK45B2H391K
2544260045
CE04W1H010M
Remarks
0.033m
F
25V
0.047m
F
25
V
0.047tfF
25V
0.068mF
25
V
390PF
500V
Electrolytic
ImF
50V
2544258002
2544254006
CE04W1V4R7M
4.7mF
35V
CE04W1C100M
IOmF
16V
2544252024
2544260016
CE04W1A470M
47
M
F
10V
CE04W1HR22M
0.22mF
50V
2544228951
CE04W1HR68M
Cl
66,266
2551120026
Cl
39,239
2551120000
C107,207,116
2551120084
216,142,242
151,251
Cl
03,203
2551120097
Cl
57,257
2551121009
Cl
05,205
2551121012
Cl
17,217
2551121025
152,252
C322
2554078081
CQ93M1
HI
52J
CQ93M1
HI
02J
CQ93M1
H472J
CQ93M1H562J
CQ93M1H682J
CQ93M1H822J
CQ93M1
H103J
2554078081
CQ93P2A562J
0.68mF
Film
0.001
5mF
50V
O.OOImF
50
V
0.0047
M
F
50V
0.0056mF
50V
0.0068mF
50V
0.0082mF
50V
0.01
M
F
50V
0.0056mF
100V
OTHER
PARTS
GROUP
LI
01,201
2310825009
LI
02.202
2358011008
104,204
LI
03,203
2320102000
LI
05,205
2350020000
LI
06,206
2328044005
LI
07,207
2390010009
L301
T301
S301
J301
J302
CN301
CN302
CN303
2390010009
2350019011
2398024000
2124611001
2048047007
2048114008
2050233045
2050233061
2050233090
BIAS
FILTER
INDUCTOR
MPX
FILTER
INDUCTOR
682J
BAND
TRAP
FILTER
HX
STEP
UP
COIL
INOUCTOR
122J
OSC
COIL
PUSH
SWITCH
H/P
JACK
4P
PIN
JACK
4P
EH
CONNECTOR
BASE
6P
EH
CONNECTOR
BASE
9P
EH
CONNECTOR
BASE
The
carbon
resistors
rated
at
%W
are
not
listed
herein.
KU-5871
POWER
LOGIC
UNIT
Ref.
No.
Part
No.
Part
Name
Remarks
SEMICONDUCTOR
GROUP
1C1
2620674005
mPD7506C-069
IC2.3
2620447009
BA6109U1
IC4
2620635007
LUS9001
IC5
2620730004
HD74HC238
IC7,8
2620729002
HD74HC08
IC401.402
2620440006
BA6146
IC403
2620580005
M
PD554C-136
IC451
4990049009
R
M-577
TR1
2740036002
2SC468
(C)
TR2
2740078031
2SD882
(Q/P)
TR3.9.13
2730178022
2SC1740(R/$)
TR4
2720055029
2SB772
(Q/P)
TR5,
14
2710183927
2SA933
(R/S)
2710105002
2SA966
(Y)
2690022904
DTA143ES
2690015005
DTC124XS
IC403
IC451
TR1
TR2
TR3.9.13
TR4
TR5,
14
TR6
TR7,
12
TR8.
11
451
TR15
TR401
-404
TR405
XT1
D1-10
Oil
D12-26
401,402
451-456
ZD1,2
ZD3
4.7K-4.7K
22K-47K
2630188002
mPC78L05
2730178022
2SC1740
(R/S)
2690029907
RN1204
2610037005
CSB455E
2760433009
DSM1A2
2760049011
1S2076A
2760049008
1S2076
Ref.
No.
Cl
9
C407
M,
fi
Cl.
9
408
C403.406
C4,
7
C13
CIO,
11
C16,17
20
C401,404
C45
C46
C2,44
C402.405
Cl
5
C5,8
C14
Cl
2
Part
No.
2544250055
2544252943
2544254006
2544254019
2544254938
2544163003
2544256033
2544258002
»
2544258002
2544172007
2544166042
2544260045
2544260058
2544254080
2544197008
2544255018
2544258086
Part
Name
CE04W0J471M
CE04W1A221M
CE04W1C100M
CE04W1C220M
CE04W1C470M
CE04W1C221M
CE04W1E470M
CE04W1V4R7M
CE04W1V4R7M
CE4W1H0R1M
CE04W1HR33M
CE04W1H010M
CE04W1H2R2M
CE04W1C102M
CE04W1C222M
CE04W1C472M
CE04W1V471M
Remarks
Electrolytic
470mF
6.3V
220mF
10V
iqy
IOmF
16V
22mF
16V
47mF
16V
220mF
16V
47mF
25V
4.7mF
35V
4.7m
F
35V
0.1
mF
50V
0.33mF
50V
IMF
50V
2.2mF
50V
IOOOmF
16V
2200mF
16V
4700mF
16V
470mF
35V
47K-47K
2760052085
HZ11A-3
2760249015
HZ18-3
2760236057
HZ5C-3
2760254000
HZ7B-3
2760218046
HZ9B-1
2760299007
HZ3C-2
RESISTOR
GROUP
LE453
SW451
—458
L401
CN1
CN2
CN3
CN401
CN402
iRTS
GROUP
4710253013
RADIATOR
3939355001
LN224RP
(LS)
(RD)
3939354002
LN424YP
(LS)
(AMBER)
3939352004
LN324GP(LS)
(GN)
2124388004
TACT
SWITCH
2358014034
INDUCTOR
3939357009
SLR-56VR3H
2050233061
6P
EH
CONNECTOR
BASE
2050233087
8P
EH
CONNECTOR
BASE
2050233074
7P
EH
CONNECTOR
BASE
2050233090
9P
EH
CONNECTOR
BASE
2050233045
4P
EH
CONNECTOR
BASE
3934010008
Ft
METER
4410667107
METER
HOLDER
2050243035
3P
WIRE
HOLDER
2050243064
6P
WIRE
HOLDER
2050243080
8P
WIRE
HOLDER
2050243093
9P
WIRE
HOLDER
2050243048
4P
WIRE
HOLDER
2050243051
5P
WIRE
HOLDER
2050243048
5P
WIRE
HOLDER
2050243048
4P
WIRE
HOLDER
Ref.
No.
Part
No.
Part
Name
201
4118341903
CHASSIS
4118341916
CHASSIS
202
KU-5871
PWR
LOGIC
PWB
ASS'Y
203
KU-5881
AUDIO
PWB
ASS'Y
204
KU-58712
CONTROL
PWB
ASS’Y
205
KU-58711
COUNT/METER
P.
ASS’Y
206
1030913108
FRONT
ESC
ASS'Y
1030913111
FRONT
ESC
ASS’Y
207
VM
861
CASSETTE
MECHA
208
4118347101
EARTH
PLATE
(A)
209
4118383000
SHIELD
LABEL
210
!
4118346225
i
ANGLE
I
•
23^5336001
m%$&
w&mr
wmmmmm
-fell
£i§Pr
•
t'lWfcAiB*^.
-~
1
*<&<i.vj(pKk££gHittMk
3
te
air•
■■
•,-
~A
.
1
212]
4118342627
JTRANS
BRACKET
]
igp06»310p2
K/iaSOTgEW'.ft
ftofeekrcl
■ ■
jgjLyfc
.*»4|>p||^
•
-"#4*
l
ASr-i/Lj*
m214l
4450056008;
^2151
iWQ
■
•ssyisisfjj
Fbush
•'.a*
T|,*
^
216;
4118343302
POWER
SW
BRACKET
217
|
4618130009
CUSHION
(A)
218|
1058089108
BOTTOM
COVER
219]
4610162004
FELT
PAD
220
1430460109
METER
WINDOW
221
i
1290065210
COLOR
FILTER
i
222
|
1130802106
PUSH
KNOB
(A)
1130802119
PUSH
KNOB
(A)
223
|
3934010008
FL
METER
224|
2124388004
TACT
SWITCH
225!
1130805006
PUSH
BUTTON
{A)
j
1130805019
PUSH
BUTTON
(A)
226!
1130806005
PUSH
BUTTON
(B)
1130806018
PUSH
BUTTON
<B)
227
2090110018
EARTH
WIRE
EP-4772
CORD
HOLDER
4318098108;
PUSH
SW
LEVER
4310220107
1
P.S.
LEVER
ASS'Y
4310220110:
P.S.
LEVER
ASS'Y
4310217000
1
EJECT
KNOB
4310217013!
EJECT
KNOB
4318104102!
EJECT
PLATE
1441480220
'
FRONT
PANEL
ASS'Y
i
1441480217
FRONT
PANEL
ASS'Y
KU-58715
1120484204
VOL
KNOB
(A)
1120484217
VOL
KNOB
(A)
1120485009
VOL
KNOB
IB)
1120485012
VOL
KNOB
(B)
tei
§||!
ipi
HpKj
m&4,
REMOTE
SENS.
P.
ASS'Y
241
242
243
244
245
•
246
|
247
!
248
250
251
252
253
254
!
255
j
257
|
258
!
A
259
A
2
60
A
261
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
1030919102
1030919115
4110564115
1028319280
1028319248
4770224031
4410667107
KU-58714
KU
-
58811
4410668009
4458004007
1338085000
4458028009
2124611001
2123315023
2048114008
2110474003
2110470007
j
2048047007
\
2110472005
j
2110471006
!
2129136028
2020022008
2061031045
4737500015
j
4737501001
4713303016
4737002005
4737004003
4737002018
|
4737003004
4737500044
4737503038
j
4713305014
4751106042
i
C
WINDOW
C
WINDOW
C
WINDOW
ESC
TOP
COVER
TOP
COVER
SP
WASHER
METER
HOLDER
LED
PWB
ASS'Y
VR
PWB
ASS'Y
VOL
PLATE
WIRE
CLAMPER
REMOTE
COVER
LABEL
CORD
HOLDER
PUSH
SWITCH
VOLTAGE
SELECTOR
4P
PIN
JACK
VI620
V30KA
104R
VI620
V20
FA103
H/P
JACK
V16
V20FB
501
K
INPUT
VR
OUTPUT
VR
BIAS
VR
mm
V16
V20F8
254-
BAL.
VR
POWER
SW
FUSE
HOLDER
:
FUSE
(0.25)A
3x8
CBTS
(P)-2
3x10
CBTS
IP)-2
3x6
CBS-2
3x6
CBTS
(S)-2
4x8
CBTS
(S)-2
3x8
CBTS
IS)-2
3x8
CFTS
IS)-2
3x8
CBTS
|P)-B
4x10
CFTS
(P)
BK
BK
3x10
CBS-2
WASHER
4737503041
4x10
CTTS
(P)
Nl
4730359014
3x16
CBRTS
WARNING:
Parts
marked
with
and/or
shading
have
special
characteristics
important
to
safety.
Be
sure
to
use
the
specified
parts
for
replace¬
ment.
Remarks
symbols
in
the
parts
list
refer
to
the
following
countries
and
areas.
EA:
Australia
EK:
United
Kingdom
EU:
U.S.A.
El
:
Multiple
voltage
model
E2
:
European
continent
*
Remarks
symbols
IBK)
in
the
parts
list
means
that
the
color
of
the
front
panel
is
Black.
\
i
r
i
EXPLODED
VIEW
OF
CABINET
AND
CHASSIS
GROUP
r
EXPLODED
VIEW
OF
MECHANISM
VM861
UNIT
KU-5890
MECHANISM
P.W.B
UNIT
--
Ref.
No.
—
Part
No.
Part
Name
...
.
Remarks
R901
R902
i
1
_
2412332047
2412332005
2123331308
2129201005
3939178000
3939026000
2042167006
j
2050185067
i
1
RD14B=*331J
R
0148**221J
ROTARY
ENCODER
SLIDE
SWITCH
LN25RCP
PN150
7P
EH
CON.
CORD
6P
WIRE
HOLDER
330D
2200
•
The
carbon
resistors
rated
at
V
*W
are
not
listed
herein
ACCESSORIES
GROUP
Ref,
No.
’
-
Part
No.
Part
Name
Remarks
♦
2032101001
5111457000
5111456001
^263364700?
2P
CONNECTOR
CORD
INST.
MANUAL
INST.
MANUAL
1
PLUG
EU
only
FUNCTION
OF
REMOTE
CONTROL
1C
•
Remote
Control
1C
LU59001
CARTON
CASE
GROUP
Ref.
No.
Part
No.
1
1
1
’
Part
Name
Remarks
•
5011108019
j
CARTON
CASE
5038054104
PACKING
5058092007
j
LAMINATE
ENVELOPE
WARNING:
Parts
marked
with
and/or
shading
have
special
characteristics
important
to
safety.
8e
sure
to
use
the
specified
parts
for
replace¬
ment.
Remarks
symbols
in
the
parts
list
refer
to
the
following
countries
and
areas.
EA:
Australia
EK:
United
Kingdom
EU:
U.S.A.
El:
Multiple
voltage
model
E2
:
European
continent
*
Remarks
symbols
(BK>
in
the
parts
list
means
that
the
color
of
the
front
panel
is
Black.
Terminal
No.
Function
Terminal
No.
Function
1
Data
output.
11
Remote
control
code
input.
2
Data
output.
Receivers
code
from
RM557.
3
Data
output.
12
System
address,
ground.
4
Data
output.
13
System
address,
ground.
5
Data
output.
14
System
address,
ground.
6
455
kHz
osc.
15
System
address,
+5V
7
455
kHz
osc.
16
Data
output.
8
Ground.
17
Data
output.
9
ACL
(Auto
Clear).
Receivers
High
(+5V)
from
18
System
address,
ground.
TR8
for
2.5
sec.
at
the
time
of
19
Data
output.
10
turning
the
power
on,
normally
Low
(OV).
Ground
20
V
o
d
.
+
5
V
•
Table
of
LU59001
Data
Output
_
Date
of
LU59001
when
"KEY
IN"
by
remote
control.
Note:
0:
OV
1:
5V
Terminal
No.
of
LU59001
Key
of
Remote
Control
(RC-101)
26
FF
»
12
i
14
15
18
i
I
I
System
Address
13
1
1
1
2
1
4
1
Data
5
1
16
1
17
1
19
1
Expand
3
1
Data
Cl
C2
C3
C4
C5
C6
C7
C8
C9
CIO
C11
Cl
2
C13
0
0
1
0
0
0
1
0
1
1
0
1
0
27
REW
0
0
1
0
0
1
1
0
1
1
0
1
0
28
PLAY
►
0
0
1
0
0
0
0
1
1
1
0
1
0
29
PAUSE
II
0
0
1
0
0
1
0
1
1
1
0
1
0
30
STOP
■
0
0
1
0
0
0
1
1
1
1
0
1
0
31
REC
•
0
0
1
0
0
1
1
1
1
0
1
0
-^-
Input
•
V
’
*
—
Output
PARTS
LIST
OF
CASSETTE
MECHANISM
EXPLODED
VIEW
1
Ref.
!
No.
j—___
Part
No.
Part
Name
Remarks
j
1
4118229436
MECHA
BASE
ASS'Y
i
3
4318076405
HEAD
SLIDER
ASS'Y
4
4310218203
HEAD
PLATE
ASS'Y
;
5
4256011003
STEEL
BALL
ASS
T
6
4318080200
j
BALL
GUIDE
PLATE
7
!
4638230002
1
j
SPRING
i
8
j
3918825002
ERASE
HEAD
i
9
j
3918076107
R/P
HEAD
i
10
|
4438671104
SPECIAL
NUT
11
|
4418994102
CORD
HOLDER
12
4428165002
SLIDER
SPACER
13
4638842005
SPRING
|
14
2124621004
LEAF
SWITCH
!
20
;
4338224208
STOPPER
21
4610154083
CUSHION
23
4338194105
P
ROLLER
ARM
ASS'Y
24
4638231108
SPRING
25
4218400003
REEL
SSS'Y
26
4638261000
SPRING
27
4338199003
FRICTION
PLATE
28
4630483006
SPRING
29
4330449104
1.
ARM(B)G
ASS'Y
35
4338236209
IDLER
ARM(A)
ASS'Y
36
4638271003
SPRING
37
2178069007
DC
MOTOR
38
4218403000
PULLEY
39
4418962406
DC
MOTOR
F
i
X
PLATE
40
4318081500
BRAKE
41
4618127106
BRAKE
SHOE
42
4638234105
SPRING
43
4338232203
BRAKE
ARM
ASS'Y
44
4438648302
METAL
HOUSING
ASS'Y
45
4210389009
FLY
WHEEL
ASS'Y
47
4122025008
BACK
PLATE
50
4770090074
WASHER
52
4418966208
CAM
MOTOR
HOLDER
53
2178070009
DC
MOTOR
[
54
4248025607
j
WORM
GEAR
55
4248027401
j
CAM
56
4140414002
j
OIL
FENCE
57
4428018308
ENCODER
BRACKET
58
i
4338225304
j
HOLE
SENSOR
(1)
59
4338226400
j
HOLE
SENSOR
(2)
62
4428147509
j
RIGHT
STAY
ASS'Y
63
4428145200
!
LEFT
STAY
ASS'Y
68
1030922209
CASSETTE
BOX
69
4330459204
j
CASSETTE
BOX
HOLDER
72
4318097002
i
COLLAR
73
4638236116|
BOX
SPRING
74
4698013104|
AIR
DUMPER
76
!
1448508613
j
ESC
PLATE
77
393917901
2
i
[
LN0105
YP4(YW)
78
4458028009
1
CORD
HOLDER
79
KU-51000
|
E
HOLE
SENS
PWB
ASS'Y
80
2123331308
ROTARY
ENCODER
81
3939178000
LN25RCP
Ref.
No.
Part
No.
Part
Name
Remarks
82
3939026000
PN150
83
2129201005
SLIDE
SWITCH
84
KU-58901
R
PULSE
SENS
PWB
ASS'Y
101
4490030107
E
HEAD
BASE
102
4638621103
SPRING
103
4338193009
TAPE
GUIDE
104
4338196103
P.
ROLLER
ARM-L
ASS’Y
1
1
105
4338198101
P.
ROLLER
ARM
PLATE
I
106
4630480009
SPRING
|
109
4638234105
SPRING
f
111
4218365504
CAPSTAN
WHEEL
ASS’Y
112
4238028108
BELT
113
4238030013
BELT
150
4638819012
SPRING
j
152
2178034105
C
P
MOTOR
1
153
4218383007
MOTOR
PULLEY
r
154
4258058004
WASHER
j
155
4770090016
WASHER
f
158
KU-5890
2
ENCODER
PWB
ASS'Y
1
171
4438818006
SPECIAL
NUT
|
172
4228175001
CAPSTAN
JOURNAL(I)
173
4228176107
CAPSTAN
JOURNALS)
174
4638640100
SPRING
200
4638829303
CASSETTE
SPRING
201
4428154107
C
P
SUPPORT
203
4338269409
HOOK
!
204
4638256002
SPRING
i
205
4128829004
ANGLE
■
206
4638257001
SPRING
[
208
1038243304
CASSETTE
SUPPORT!L)
209
1038243317
CASSETTE
SUPPORT(R)
1
210
4338271303
DAMPER
GUIDE
|
301
4377002005
3x6
CBTS(S)-Z
302
4737500028
3x8
CFTS(P)-Z
307
4713202010
2.6x5
CBS
310
4713802025
2.6x14
CBS
311
4756020000
2N
313
4713201011
2.6x4
CBS-Z
314
4770090003
WASHER
317
4751121108
SLIT
WASHER
318
4737500002
3x6
CBTS{P)-Z
319
4761114008
1.5E
RING
320
4713802012
2.6x3
CBS-Z
321
4751120109
SLIT
WASHER
322
4713801039
2x3
CBS-Z
323
4761003009
3E
RING
327
4730154028
2x8
CRTS(P)-Z
328
4751005004
4W
329
4751139006
2.1
W
330
4761002000
2.5E
RING
331
4761001001
2E
RING
(23)
A
I
SCHEMATIC
DIAGRAM
OF
AUDIO
AMP
UNIT
»
A
t
B
C
4
D
c
E
*
•
This
circuit
diagram
shows
the
basic
circuit.
It
is
subject
to
j
change
for
the
purpose
of
improvement.
j
I
(
2
4
)
SCHEMATIC
DIAGRAM
OF
POWER/LOGIC
UNIT
TO
AUDIO
PWB
ASS'Y
W403
■
■
r
^
r-i-i-i.
.-.ill
^
_
TO
COUNT/METER
P.
ASS'Y
POWER
SW
PWB
ASS"4
KU-587
*3
Note:
Resistance
shall
be
1/4W
unless
otherwise
specitied
and
the
unit
is
Cl.
The
unit
of
capacitor
is
fj.F,
P
is
pF
unless
otherwise
specified.
This
circuit
diagram
shows
the
basic
circuit.
It
is
subject
to
change
for
the
purpose
of
improvement.
Parts
marked
with
ZiA
are
of
importance
in
respect
to
the
safety,
use
the
specified
type
without
fail.
POWER
TRANSFORMER
Multi
voltage
models
POWER
SWITCH
—f-0*^
F5I
POWER
TRANSFORMER
European
models
POWER
Canadian
models
A
R51
,
C51
120
'0.01/400
'•
(1/2W1
:
POWER
SW
PWB
ASS
Y
KU-5870
AC2
mm,
....
♦
ACI20V
MAC220V
TC240V.
A
POWER
SWITCH
A
A
I
..
"
.
-
i
W*
"
■■
■
■
|f—
■
.
R5f
:
V
’20
&01/400
,
(1/2W)
;
■
■
A
*
AC220V
AC240V
POWER
SW
PWB
ASS'Y
KU~587*3
^
AC2
(
2
6
)
I
P.W.
BOARD
OF
KU-5881
AUDIO
AMP
UNIT
4
1
5
1
6
l
7
8
»
4
(
2
5
)
4
8
B
FROM
AUDIO
PWB
ASS'Y
D
,
E
PWR
LOGIC
PWB
ASS'Y
S6)
P
(Ll2)
§
P
(Ltt)
3)
P
(LlO)
IG
s
P
(L9)
5y
P
(L8)
50)
P
(L7)
V3)
P
(Rl2)
*8)
P
(Rn)
*7)
P
(Rio)
P
(R
9
)
*5)
P
(Re)
P
(R
7
)
53)
P
(Re)
26)
NC
H
P
(Li
)
2$
P
(L2)
P
<L3>
0P
(L4)
2p!G
0P
(L5
)
§)P
(L6)
(Xl
)
rnp
(X
2
)
5
®2G
UJ
1§NC
>
id
@P
(h)
0
<C
13)
P
(g)
£
§)3G
cn
UJ
")P
(f)
i—
mmm
®
P
(e)
z
8
S
4
G
0
Snc
\
£T
K
P
(d)
UJ
I—
S
5G
UJ
5)p
(c)
LL
^P
(b)
Sp
(a)
TO
CONTROL
PWB
ASS'Y
Note:
Resistance
shall
be
1/4W
unless
otherwise
specified
and
the
unit
is
H.
The
unit
of
capacitor
is
F,
P
is
pF
unless
otherwise
specified.
This
circuit
diagram
shows
the
basic
circuit.
It
is
subject
to
chancje
for
the
purpose
of
improvement.
(
28
)
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