Nakamichi CR-3 User manual

- Nakamichi
NAKA-00120
Service Manual
Nakamichi
CR-3
CR-3A
CR-3E
CR-30
Discrete Head Cassette Deck

CONTENTS
1.
2.
3.
4,
Toe
10.
11.
12.
13.
Geren
al
5556
212
G
rato
te
saPia
ie:
sclonidletstcle
fo
leg
vals
2
Vain
'ny
whe,
816,
Rp
Glad
d
te
Do
see
wh by
VRS
ee
AB
He
hw
oat
1
Removal
Procedures
oe
ah
a
ate:
9
Feo
5
98
6
ios
Be”
SS
rer
BAG
vale
toy
oe
9:
Ws.
08.3
715
LS
6
2a
Me
alae,
GuierTAl
ev
ROS
week
ai
Bk
be
gees
be
ne
3
2.
1
Top
Cover
Ass’y
and
Bottom
Cover
Ass’y
1.6...
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eet
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3
2.
2
Cassette
Case
Cover.
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et
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2
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Mechanism
Ags
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ig
Ete
8
2
#44
Monitor
Switch
Joint
2...
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cc
eee
eee
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8
2.
5
Pin
Jack
P.C.B.
Ass’y,
Power
Supply
P.C.B.
Ass’y,
and
Main
P.C.B,
Ass
Vole
Siebel
Mienelecs
BAS
awe
8
2.
6
Front:
Pariel
$s
sess
695-9
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4
2.
7
Bias
Tune
Volume
P.C.B.
Ass’y
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8
Control
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at
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4
2.
9.
Head
Mount
Base
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5
2.
10.
Power
Switch
Joint
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5
Test
Tapes
and
Gauges...
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5
Mechanical
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6
4,
1
Record
Head
and
Playback
Head
Tilt
Adjustment...
0.0.0.0...
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6
4,
2
Head
Base
Stroke
Check
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6
4,
8
Erase
Head
Stroke
Adjustment
and
Tape
Guide
Height
Check
..........0000ccccecccccee
6
4.
4
Erase
Head
Height
and
Tilt
Adjustment
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cc
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q
4,
65
Playback
Head
and
Record
Head
Height
Adjustment
and
Azimuth
Alignment
......:........
1
4.
6
Pressure
Adjustment
of
Take-up
Pressure
Roller...
0.0.0.0.
cc
cece
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8
4.
7
Tape
Travelling
Check
20...
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ne
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8
4,
8
Eject
Damper
Adjustment
...
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cette
ene
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8
4.
9
Reel
Motor
Speed
Adjustment
in
Play
Mode
........
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8
4,
10
Tape
Speed
Adjustment...
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4.
11.
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Parts
Location
for
Electrical
Adjustment...........0.
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9
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Adjustments.........
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Ass’y
and
Parts
List............
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14
Ti
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Chassis
Ass’y
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ae
15
7.
3.
Bottom
Cover
Ass’y
(A02).........
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erie
w:
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16
7.
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Ass’y
(B01)
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staneteve
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Nas
18
1
5.
Front
Escutcheon
Ass’y
(B02)
.............
BW
SAE
AGE
bee
ave
lace
as
eters,
oo
gmanieiedevertnalas
otend
aces
18
Mounting
Diagrams
and
Parts
List
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1.
Fuse
P.C.B.
Ass’y
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2.
Pin
Jack
P.C.B,
Ass’y.......
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63.
Input
Volume
P.C.B.
Ass’y........
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Volume
P.C.B,
Ass’y.........
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5.
Bias
Tune
Volume
P.C.B,
Ass’y
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6.
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P.C.B.
Ass’y........
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ay
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Supply
P.C.B.
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21
Schematic
Diagram
o.oo.
oe.
6)
eset sale
whee
be
ao
A
Wee
Wk
SD
ole
a
6.0
bub
6:
wyavb
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o
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23
9
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Block:
Diagrams’
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ale
ws
bias
ee
Nee
SS
8
ese
seAAG.
Wace
ey
ara
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al
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rate
23
9
2.
Schematic
Diagram
..
1...
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et
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een
teen
eeneveeteeeeveune
28
Wiring:
Diaper
cx:
oice
Sora
ai
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a 6
so
BRS
Rw
Ae
Wodeaeh
oO,
OS
baits
Le
Waa GEE
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ae
oe
29
Block
Diagrams: oi.
ou.
56s
cea
8
scree
bean
ae
wwe
Beh
oad
Gs
BEI
ES
OD,
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ease
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lio
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de
bok
ee
aes
30
11,
1.
Amplifier:‘Section:
00
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6
2
9
55.
8
seta
ace
drdosa.
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BAD
bas
see
aa
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he
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hese
ae
30
11,
2.
Mechanism
Control
Section
©...
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enter
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831
Timing
Charts
and
Eq.
Amp.
Frequency
Response
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32
12.
#1.
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CHATS
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12.
2,
Eq.
Amp.
Frequency
Response
.........
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Specifications:
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34
GENERAL
1.1. Voltage Selector
Voltage
selector
is
installed
on
the
rear
panel
for
Other
version
of
the
Nakamichi
CR-3.
This voltage selector can select 110, 127, 220, or 240 V at customer’s disposal,

1.2, Package Ass’y and Accessory Ass’y
Schematic
ef, No,
OFO4065A
OFO04066A
OF04067A
OF04101A
OF04087C
OF 04088C
OF03684A
0D04046A
0D04047A
OM034657A
OM05101A
OM05085A
OMO5056A.
OM05069A
OM05106A
OM05105A
OM05107A
0M05108A
0M05102A
OM05103A
Description
Package Ass’y
Carton Box (CR-3)
Carton Box (CR-3A)
Carton Box (CR-3E)
Carton Box (CR-30)
Packing L
Packing R
Poly-Sheet S
Warranty Card (CR-30)
User’s Pack (CR-30)
Voltage Label 240V (CR-3
(Australia) & CR-3E (UK))
Voltage Label (CR-3 (Saudi
Arabia))
Point of Sale Label (CR-30)
Serial No, Label (CR-3, CR-3E &
CR-30)
Serial No, Label (CR-3A)
UL Label (CR-3A)
LA Label (CR-3A)
Canada Label (CR-3A)
UL/Canada Label (CR-3A)
Shipping Label Los (CR-3A)
Shipping Label VAN (CR-3A)
BEE EN Re D NRRR RR RRe
Schematic
Ref, No.
Part No.
Description
i—
0D03092B
0D04449A
0D04810A
OD04766A
0D04783B
0D04784B
0D04786B
OD04796A
0D04795A
OD04797A
0D04812A
0M03844B
DA04121A
Accessory Ass’y
Poly-Bag
Important Notice (CR-3, CR-3E
& CR~30)
Important Notice (CR-3A)
General Catalogue (CR-3A)
Owner’s Manual (English/
German/French)
Owner’s Manual (Japanese)
Price Card (CR-30)
Tape Catalogue (CR-3A)
Tape Catalogue (CR-30)
Warranty Card (CR-3A)
Tape Supplement
Power Cord Label (CR-3E (UK))
Pin Cord Ass’y
BEE Eee ee

2. REMOVAL PROCEDURES
2.1. Top Cover Ass*y and Bottom Cover Ass’y
Refer to Fig, 2.1.
(1)
Loosen
F01
and
remove
FO2
(Top
Cover
Ass’y).
(2)
Loosen
F03
and
remove
F04
(Bottom
Cover
Ass’y).
Fig. 2.1
2.2. Cassette Case Cover Ass’y
Refer to Fig. 2.2.
(1) Press FO1 (Eject Button) to open FO2 (Cassette Case Cover
Ass’y).
(2) Pull FO2 (Cassette Case Cover Ass’y) upward,
Fig. 2.2
2.3. Mechanism Ass’y
Refer to Fig, 2,3,
(1)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring to item 2.1,
(2)
Remove
the
Cassette
Case
Cover
Ass’y
referring
to
item
2.2,
(3)
Loosen
FO1,
F02
and
F03,
remove
F0O4,
and
disassemble
F05
(Mechanism Ass’y).
Fig. 2.3
2.4. Monitor Switch Joint
Refer to Fig, 2.4,
q@
(2)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring
to
item
2.1.
With
pushing
F01
(Monitor
Switch
Joint)
in
the
direction
of
the
arrow
A,
pull
F01
(Monitor
Switch
Joint)
in
the
direction
of
the
arrow
B
to
remov
it.
'
Fig. 2.4
2.5,
Pin
Jack
P.C,.B.
Ass’y,
Power
Supply
P.C.B.
Ass’y,
and
Main
P.C.B. Ass’y
Refer to Fig, 2.5,
Q)
(2)
(3)
(4)
)
(6)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring
to
item
2.1,
Remove
the
Monitor
Switch
Joint
referring
to
item
2.4.
Loosen
F01
and
remove
F02
(Pin
Jack
P.C.B.
Ass’y).
Loosen
F03
and
remove
F04
(Power
Supply
P.C.B.
Ass’y).
Push
F05
(Hole
Plug)
with
the
top
of
screwdriver
to
remove
it.
Loosen
F06
and
lift
FO7
(Main
P.C.B.
Ass’y).
Note:
When
installing
the
Main
P.C.B.
Ass’y,
to
facilitate
instal-
lation,
place
the
Main
P.C.B.
Ass’y
so
that
the
tops
of
switches
on
the
Main
P.C.B,
Ass’y
come
in
contact
with
the
ends
of
push
buttons
as
shown
in
Fig.
2.6.

Fig, 2.6
2.6. Front Panel
Refer to Fig, 2.7,
(1)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring
to
item
2.1,
(2)
Remove
the
Cassette
Case
Cover
Ass’y
referring
to
item
2.2.
(3)
Pull
out
F01,
FO2
and
FO3,
and
loosen
F04
and
F056,
(4)
With
pushing
claws
by
hand
as
shown
in
the
figure,
remove
F06
(Front
Panel),
2.7.
Bias Tune Volume P.C.B. Ass’y
Refer to Fig. 2.8.
@
(2)
(3)
(A)
(5)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring
to
item
2.1.
Remove the Monitor Switch Joint referring to item 2.4.
Remove
the
Main
P.C.B.
Ass’y
referring
to
item
2.5,
Remove the Front Panel referring to item 2.6. i
Loosen
F01
and
FO2
with
a
special
nut
driver
or
with
pliers,
.and
remove
F038
(Bias
Tune
Volume
P.C.B,
Ass’y),
Main RC.B.Assy
2.8. Control P,C.B, Ass’y
Refer to Fig. 2.9,
q)
(2)
(3)
(4)
(6)
(6)
Remove
the
Top
Cover
Ass’y
and
the
Bottom
Cover
Ass’y
referring
to
item
2.1,
Remove
the
Mechanism
Ass’y
referring
to
item
2.3.
Remove
the
Monitor
Switch
Joint
referring
to
item
2.4,
Remove
the
Front
Panel
referring
to
item
2.6.
Loosen
FO1
and
F02
with
a
special
nut
driver
or
with
pliers
to
set
FO3
(Bias
Tune
Volume
P.C.B.
Ass’y)
free,
With
pushing
F03
(Bias
Tune
Volume
P.C.B.
Ass’y)
in
the
direction
of
the
arrow,
loosen
F04,
unhook
F05,
and
remove
F06
(Control
P.C.B.
Ass’y),
Fig. 2.9

2.9.
Head Mount Base Ass’y
Refer to Fig. 2.10.
q@)
(2)
(3)
(4)
Remove the Top Cover Ass’y and the Bottom Cover Ass’y
referring to item 2.1,
Remove the Mechanism Ass’y referring to item 2,3.
Loosen F01 and remove F02 (Head Mounting Cover).
Loosen FO3, remove FO4 and FO05, straighten FOG (Wire
Clamper), and lift FO7 (Head Mount Base Ass’y).
Note: When mounting the Head Mount Base Ass’y, follow the
@)
(2)
(3)
(4)
5)
(6)
(7)
(8)
(9)
(10)
(11)
next steps, Refer to Figs. 2.11.1 and 2.11.2,
(a) Insert the Plate Washer into the groove of the shaft by
hand as shown in Fig, 2.11.1. :
(b) Mount F07 (Head Mount Base Ass’y) and fasten F03.
Then push the Plate Washer with a blade of screw-
driver to set the Plate Washer free, Refer to Fig.
2.11.2,
Fig. 2.10
TEST TAPES AND GAUGES
400 Hz Level Tape (DA09005B)
1 kHz Track Alignment B Tape (DA09087B)
10 kHz PB Frequency Response Tape (DA09003B)
15 kHz PB Frequency Response Tape (DA09002B)
20 kHz PB Frequency Response Tape (DA09001B)
15 kHz Azimuth Tape (DA09004B)
3 kHz Speed and Wow/Flutter Tape (DA039006C)
Tape Travelling Cassette (DA09071A)
Reference EXII Tape (DA09111A)
Reference SX Tape (DA09110A)
Reference ZX Tape (DA09109A)
Plate Washer R
Plate Washer L -
Fig. 211.1
Fig, 2.11.2
2.10. Power Switch Joint
Refer to Fig. 2.12,
(1) Remove the Top Cover Ass’y referring to item 2.1,
(2) Pull F01 (Power Switch Joint) upward to remove it,
Fuse PC.B. Assy
Fig, 2.12
(12) EH Tilt Check Gauge S (DA09088A)
(13) Stroke Check Gauge S (DA09090A)
(14) Tape Guide Height Check Gauge S (DAO9091A)
(15) Tilt Check Gauge S (DA09039B)
(16) Torque Gauge FWD (DA09082A)

4.
MECHANICAL
ADJUSTMENTS
4.1,
Record
Head
and
Playback
Head
Tilt
Adjustment
Remove
the
Cover
Plate
Ass’y
by
loosening
two
screws
to
gain
access to the head block,
Refer to Fig. 4,1,
(1)
Remove
the
pad
lifter
from
the
playback
head,
(2)
Load
a
Tilt
Check
Gauge
S
(DA09039B)
in
the
cassette
deck,
(8)
Clip
the
grounding
terminal
of
the
Tilt
Check
Gauge
with
one
end
of
the
cord with
clip,
and
the
chassis
of
the
cassette
deck
with
the
other
end,
(4)
Remove
both
of
the
Height
Gears,
(5)
Set
the
cassette
deck
in
Play
mode.
Check
to
insure
whether
the
Beacons
Playback
Head
“Upper”
or
‘Lower’
and
Record
Head
‘“‘Upper’’
or
“Lower”
are
illuminating.
In
order
not
to
give
damages
onto
the
head
surfaces,
push
both
of
slide
knobs
of
the
Gauge
to
away
from
the
heads,
then
return
them
to
the
original
place
to
be
in
contact
with
record
head
and
playback
head
surfaces
after
Play
mode
is
securely
locked,
(6)
Beacon
Playback
Head
“Lower”
will
light
on
when
height
adjustment
screw
(PH)
turned
counterclockwise
but
play-
back
Head
“Upper”
when
clockwise.
Adjust
so
that
both
“Upper”
and
“Lower”
will
light
on
even
when
you
move
the
slide
knob
away
from
the
heads
and
then
return
it
to
the
original
place,
(7)
Same
procedures
will
apply
to
the
Beacons
Record
Head
“Upper”
and
‘Lower’,
except
for
the
height
adjustment
screw
(RH),
(8)
Set
the
cassette
deck
in
Stop
mode
and
fit
both
of
the
serrated
Height
Gears.
Then
set
the
cassette
deck
again
in
Play
mode
and
insure
all
of
the
4
Beacons
are
illuminating,
If
not,
(4)
through
(7)
will
have
to
be
repeated
till
satisfactory
results
are
obtained,
(9)
Mount
the
pad
lifter
on
the
Playback
head,
4.2, Head Base Stroke Check
Remove
the
Cover
Plate
Ass’y,
Refer to Fig, 4.2,
Note:
Before
you
conduct
this
adjustment,
afjust
with
a
“Tilt
Check
Gauge
8”
to
insure
freedom
from
tilt
on
the
play-
back
head
and
record
head,
(1)
Load
a
Stroke
Check
Gauge
S
(DA09090A)
in
the
cassette
deck,
(2)
Move
Record
Head
Indicator
and
Playback
Head
Indicator
to
the
direction
of
arrow
mark
“A”
with
your
finger
tip
and
then
set
the
cassette
deck
in
Play
mode.
Then
slowly
release
the
Indicators
and
insure
whether
each
of
the
Indicators
is
in
contact
with
record
and
playback
heads,
(3)
Check
to
insure
whether
the
line
“P”
on
the
Playback
Head
Indicator
meets
the
central
line
on
the
Indicator
Plate,
(4)
Check
to
insure
whether
the
line
“P”
on
the
Playback
Head
Indicator
locates
between
the
2
lines
on
the
Record
Head
Indicator,
thus
check
can
be
made
on
record
head
stroke,
4.3.
Erase
Head
Stroke
Adjustment
and
Tape
Guide
Height
Check
Remove
the
Cover
Plate
Ass’y
and
the
Head
Mount
Base
Ass’y,
Refer
to
Fig,
4.3,
(1) Erase Head Stroke Adjustment
(a)
Load
a
Tape
Guide
Height
Check
Gauge
S
(DA09091A)
in
the
cassette
deck,
;
(b)
Set
the
cassette
deck
in
Play
mode,
thus
check
can
be
made
on
erase
head
stroke
through
the
EH
Stroke
Indicator,
(c)
Check
to
insure
whether
the
erase
head
surface
is
aligned
with
red
line
on
the
EH
Stroke
Indicator.
If
not,
adjust
the
erase
head
stroke
by
loosening
screw
A
that
assembles
erase
head
with
erase
head
plate,
(a)
After
completion
of
adjustment,
screw
A
shall
be
locked
with
lock
tight
paint.
(2) Supply Tape Guide Height Adjustment
(a)
Load
a
Tape
Guide
Height
Check
Gauge
S
(DA090914A)
in
the
cassette
deck,
(b)
Set
the
cassette
deck
in
Play
mode,
(ec)
Slide
the
Supply
Tape
Guide
Check
Bar
down
against
the
supply
tape
guide,
and
check
to
insure
that
the
Supply
Tape
Guide
Check
Bar
is
accepted
by
the
supply
tape
guide.
If
not,
adjust
the
supply
tape
guide
height
by
turning
screw
B.
(3)
Take-up
Tape
Guide
Height
Check
(a2)
Load
a
Tape
Guide
Height
Check
Gauge
S
(DA090914A)
in
the
cassette
deck.
(b)
Set
the
cassette
deck
in
Play
mode,
(c)
Slide
the
Take-up
Tape
Guide
Check
Bar
down
against
the
take-up
tape
guide,
and
check
to
insure
that
the
Take-up
Tape
Guide
Check
Bar
is
accepted
by
the
take-up
tape
guide.
Height
Gear Stopper (RH)
Height Geor (RH)
Height Geer (PH)
Height Adj, Screws(RH}
Indicator Prate
Ploy Mode
Height Geor Stopper {PH}
Ploybock
Lower’
Fig. 4.1
Herght Adj, Screws(PH
Toke-up Tape Guide Check Bor

4.4, Erase Head Height and Tilt Adjustment
Refer to Fig, 4.4.
q@)
(2)
(3)
(4)
(5)
Remove th Cassette Case Cover Ass’y, Cover Plate Ass’y, and
Head Mount Base Ass’y.
Load an EH Tilt Check Gauge S (DA090884A) in the cassette
deck,
Set the cassette deck in Stop mode,
Check to insure whether one of the3 Beacons is illuminating,
Look down the mirror and slowly tum the Screw “Height’’
counterclockwise (or clockwise) so that the two horizontal
lines on the mirror will become superposed on the line (in
different color) of the erase head, and check to insure
whether the first Beacon is illuminating. :
Turn Screw “‘Tilt’? counterclockwise (or clockwise) to light
on the second Beacon. Excessive turning will cause the first
(6)
(1)
(8)
Beacon to light off. Adjustments of Screw “Tilt” will there-
fore be conducted till both of the first and the second
Beacons illuminate. :
Turn Screw “Azimuth” counterclockwise (or clockwise) to
light on the third Beacon, Excessive turning will cause either
the first or the second Beacon to light off, and therefore
adjust Screw “‘Azimuth”’ until all of the 3 Beacons illuminate,
Check to insure whether the horizontal line on the mirror
corresponds to that on the erase head. If not, (4) through (7)
will have to be repeated till satisfactory results are obtained,
After completion of adjustment,.3 pes. of screws shall be
locked with lock tight paint,
Note: Before use of this gauge, check to insure freedom from dust
Fig. 4.4
4.5. Playback Head and Record Head Height Adjustment and
Azimuth Alignment
Refer to Fig, 4.5.
(1)
(a)
(b)
(c)
(a)
(e)
@)
Playback Head Height Adjustment and Azimuth Alignment
Set the Monitor switch to Tape and connect an AC voltmeter
to the Output Jacks,
Load a 1 kHz Track Alignment B Tape (DA09087B) and set
the cassette deck in Play mode.
Turn the PH Height Gear until the outputs of both channels
become minimum,
Load a 15 kHz Azimuth Tape (DA09004B) and set the
cassette deck in Play mode,
Turn the PH Azimuth Alignment Screw until the outputs of
both channels become maximum,
Repeat above steps (b) through (e) two or three times to
obtain optimum performance,
PHHeight Adjustment
PH Azimuth Alignment
or dirts, or overflow in the groove of the erase head surface.
(2) ‘Record Head Height Adjustment and Azimuth Alignment
(a) Set the cassette deck in Stop mode,
(b) Set the Monitor switch to Tape, Eq. switch to 70 ws and Tape
Selector switch to ZX,
(c) Load a reference ZX tape and connect an AC voltmeter to
Output Jacks,
(d) Feed in 400 Hz (0 dB) to the Input Jacks,
(e) Set the cassette deck in Record and Play mode and tum the
RH Height Gear until the outputs of both channels become
maximum,
(f) Feed in 15 kHz (—20 dB) to the Input Jacks and turn the RH
Azimuth Alignment Screw until the outputs of both channels
become maximum,
(g) Repeat (d) to (f) two or three times to obtain optimum per-
formance.
RH Height Adjustment
{ { RH Azimuth Alignment
Fig. 4.5

4.6.
Pressure
Adjustment
of
Take-up
Pressure
Roller
Refer to Fig. 4.6.
(1) Set the cassette deck in Play mode.
(2)
Measure
the
torque
of
the
Take-up
Pressure
Roller
and
check
whether
the
torque
is
in
a
range
of
320
+50
g-cm,
(3)
If
torque
is
out
of
the
range,
correct
it
by
changing
the
instal-
lation
point
of
the
Pressure
Roller
Spring,
Fig. 4.6
4.7, Tape Travelling Check
Load
and
play
back
a
Tape
Travelling
Cassette
and
check
the
following:
(1)
Tape
is
in
contact
with
heads
sufficiently.
(2)
Tape
waving
is
small
on
the
heads
and
pressure
rollers,
(8)
Tape
is
free
from
waving
or
slippage
from
the
tape
guides,
Fig, 4,7
4.8, Eject Damper Adjustment
Refer
to
Fig,
4.8,
Load
a
cassette
tape,
and
with
opening
the
Cassette
Case
by
pressing
the
Eject
button
and
closing
it
by
hand,
adjust
the
speed
of
damper
action
by
the
Adjustment
Screw.
Increase
Domper Adjustment
Screw
Eject Domper
Fig. 4.8
4,9,
Reel
Motor
Speed
Adjustment
in
Play
Mode
(1)
To
warm-up
the
cassette
deck,
load
a
C-60
cassette
tape
and
set
the
cassette
deck
in
Play
mode,
(2)
After
more
than
four
minutes,
load
a
Torque
Gauge
FWD
(DA09082A)
and
set
the
cassette
deck
in
Play
mode,
(3)
Adjust
VR601
on
the
Main
P.C.B.
Ass’y
to
obtain
exactly
50
g-cm
on
the
torque
gauge.
.
4.10. Tape Speed Adjustment
Refer to Fig, 4.9.
(1)
Connect
a
frequency
counter
to
the
Output
Jacks.
(2)
Load
a
3
kHz
Speed
and
Wow/Flutter
Tape
(DA09006C)
and
play
it
back,
(3)
Adjust
the
Tape
Speed
Adjustment
Volume
incorporated
in
the
Capstan
Motor
to
obtain
3,000
Hz
on
the
frequency
counter.
CCW: Motor drives slowly.
CW: Motor drives fast,
Increase
Capstan Motor
Fig. 4.9
4.11, Lubrication
The
tape
transport
is
of
a
lubrication-free
type
mechanism,
When
the
following
parts
are
replaced,
apply
the
specified
lubricant.
(1)
Molykote
(R)
Grease
(X5-6020)
Cam Motor Pulley
Thrust portion on the Capstan Shaft
(2) FLOIL GB-TS-1
Washer
between
Ree!
Hub
Ass’y
and
Back
Tension
Spring
(3) Diamond Oi] (EP-56)
Reel Hub Shaft
(4) Anderol 456
Capstan Shaft
Note:
We
suggest
that
you
use
the
above
specified
lubricant
or
equivalent type.
The
company
dealing
in
the
above
lubricant
is
as
follows:
(a)
Molykote
(R)
Grease
(X5-6020)
Dowcorning
Co.,
Ltd.,
1-15-1
Nishishinbashi,
Minato-
ku, Tokyo, Japan
(b) FLOIL GB-TS-1
Kanto
Chemicals
Co.,
Ltd,,
2-7
Kanda
Sakuma-cho,
Chiyoda-ku, Tokyo, Japan
{c) Diamond Oil (EP-56)
Mitsubishi
Oil
Co.,
Ltd.,
1-2-4
Toranomon,
Minato-ku,
Tokyo, Japan
(d) Anderol 456
Toyo
Kokusai
Oil
Co.,
Ltd.,
3-3-5
Hatchobori,
Chuo-
ku, Tokyo, Japan

PARTS LOCATION FOR ELECTRICAL ADJUSTMENT
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ELECTRICAL ADJUSTMENTS
Preliminary
Reel Motor
Speed
Adjustment
(Play)
Tape speed
Adjustment
Meter Level
Calibration
MPX Filter
Adjustment
Playback
Head Track
Alignment
Playback
Head
Azimuth
Alignment
(DA09082A)
3 kHz
Speed and
Wow/
Flutter
Tape
(DA09006C)
Frequency
Counter
to Output
Jacks
1 kHz
Track
Alignment
Tape
(DA09087A)
(DA09004B) | Jacks
Monitor -
Tape
Eq. - 70 ps
Tape - ZX
MPX Filter
- OFF
Dolby NR
~ OFF
Monitor -
Source
Monitor -
Source
MPX - OFF/ON
Playback
Monitor -
Type
Eq. - 70 ps
Dolby NR -
OFF
10
Playback
Head
Azimuth
Alignment
Screw
Set the CR-3/3A/3E/30 as shown in MODE.
Adjust VR601 to obtain 50 g-cm
on the Torque Gauge.
Adjust
the
volume
incorporated
in
the
Capstan
Motor
Ass'y
to
obtain
3
kHz
+
15
Hz
on
the
frequency
counter,
Feed in 400 Hz and adjust the Input
Level control to obtain 500 mv -2
dB on the AC voltmeter, ;
Adjust VR118 (VR218) so that the
0 dB segment on the level meter
starts illuminating.
Adjust the Input Level control to
obtain 500 mv (0 dB) on the AC
voltmeter,
Set the MPX Filter switch to ON and
adjust L101 (L201) to obtain minimum
reading on the AC voltmeter,
(The minimum reading will be
than -30 dB.)
less
Adjust
the
PH
Height
Gear
to
obtain
the
minimum
readings
on
the
AC
voltmeter
for
both
channels.
Refer
to
"Playback
Head
Height
Adjustment"
in
item
4.5,
Adjust the Playback Head Azimuth
Alignment Screw to obtain maximum
readings on the AC voltmeter for both
channels, Refer to "Playback Head
Height
Adjustment
and
Azimuth
Alignment"
in item 4.5.
Note: Repeat Steps 6 and 7 two or
three times to obtain optimum
performance,

See OUTPUT pact REMARKS
CONNECTION
i: Playback 400Hz AC Volt- Adjust VR110 (VR210) to obtain 500 mV on
|
Level Level meter to i the AC voltmeter,
Calibration |Tape Output
(DA09005B)| Jacks
Playback 400Hz 1. Load a 400 Hz level tape, play it
Frequency |Level back, and read the playback level on
Response Tape the AC voltmeter.
Adjustment | (DA09005B)| Jacks 2. Load 10 kHz, 15 kHz and 20 kHz PB
10 kHz PB
Frequency
Response
Tape
(DA09003B)
15 kHz PB
Frequency
Response
Tape
(DA090028)
20 kHz PB
Frequency
Response
Tape
(DA09001B)
frequency response tapes and adjust
the playback head azimuth to obtain
maximum levels on the AC voltmeter
with each tape.
Check that the playback levels are
as follows with respect to the level
for 400 Hz level tape.
10 kHz: -20 dB -2 dB to +2 dB
15 kHz: -20 dB ~-2 dB to +3 dB
20 kHz: -20 dB -2 dB to +4 dB
If the levels are out of the ranges,
play back the 20 kHz PB frequency
response tape and adjust VR105
(VR205) to obtain -20 dB +1.0 dB.
VR105 (VR205) compensates the play-
back frequency response at 20 kHz as
shown below:
i Approx. 5dB
10K 20K
- Conduct Step 7 "Playback Head
Azimuth Alignment",
Bias AC Volt- {|Record, i Connect an additional 0.1 ohm
Oscillation meter Playback resistor in seies to the Erase Head
Frequency across the/Monitor - and connect the AC voltmeter across
and Erase additional Source the resistor,
Current 0.1 ohm Tape - ZX | 2. Record and playback a reference ZX
Adjustment resistor |Eq. - 70 ps tape.
and Dolby NR - 3. Adjust L301 to obtain 105 kHz on the
Frequency OFF frequency counter.
Counter 4. Check the erase current by the AC
between voltmeter, Erase current will be
terminals within the range of 310 mA to 400 mA
1 and 2 of (typically approx. 350 mA).
CN-10 on If erase current is less than 310 mA,
Main plug the 2P-receptacle into CN-52 as
P.C.B. shown below to short-circuit either
R344 or R345.
CN-52 CN-52
R345 R344
(22-ohm) (10-ohm)
(Front) ~~ shorted. (Front) shorted.
After completion of the erase current
adjustment, re-check the bias oscil-
lation frequency,
6. Remove the additional 0. 1 ohn
resistor.
11

Record
23
“kHz
AC
Volt-
1.
Amplifier |(-20 dB) | meter
Equalizer
|to
Input
|
between
2.
Adjustment
|
Jacks
L
and
GND
Source
(R
and
Tape
-
ZX
3.
GND) of Eq. - 70 ps
TP2 on Dolby NR -
Main OFF
P.C.B.
AC Volt-
meter
between
L and GND
(CR and
GND) of
TP1 on
Main
P.C.B.
Bias Trap
Adjustment
(Record
Amp.)
Record
Head
Height
Adjustment
AC Volt-
meter to
Output
Jacks
Record,
Playback
Monitor -
Tape
Tape - SX
Eq. - 70 ps
Dolby NR -
OFF
1.
2
Record
Head
Azimuth
Alignment
AC Volt-
meter to
Output
Jacks
400 Hz
(0 dB),
15 kHz
(-20 4B)
Record
Level
Calibration
and
AC Volt-
meter to
Output
Jacks
Record,
Playback
Monitor —
Source/
1.
2.
Recording
|
and
Tape
Bias
10
kHz/
Tape
-
Current
20
kHz
ZX/SX/EX
3.
Adjustment
|(-20
4B)
Eq.
-
70
ps
4.
to
Input
(ZX/SX)
Jacks
120
(EX)
5.
Dolby
NR
-
OFF/B/C
12
Adjust
L106
(L206)
to
obtain
minimum
reading
on
the
AC
voltmeter,
Adjust
the
Record
Head
Azimuth
Alignment
Screw
to
obtain
maximum
readings
for
both
channels
on
the
AC
voltmeter,
Refer
to
"Record
Head
Height
Adjustment
and
Azimuth
Alignment
in
item
4.5.
Note:
Repeat
Steps
13
and
14
two
or
Adjustment
should
be
made
in
the
order
of
2X,
SX
and
EX.
(to be continued)
Remove
the
2P-receptacle
from
CN-51
to
stop
the
bias
oscillation,
Adjust
L105
(L205)
to
obtain
approx.
16
dB
at
23
kHz
on
the
AC
voltmeter.
Plug
the
2P-receptacle
into
CN-51.
Load a reference SX tape, and
record
and
play
it
back.
Adjust
the
RH
Height
Gear
to
obtain
maximum
readings
for
both
channels
.
on
the
AC
voltmeter,
Refer
to
"Record
Head
Height
Adjust-
ment
and
Azimuth
Alignment"
in
item
4.5
three
times
to
obtain
optimum
performance,
Set
the
Monitor
switch
to
Source,
Feed
in
400
Hz,
and
set
the
Input
Level
control
to
obtain
0
4B
(500
mV)
on
the
AC
voltmeter.
Set
the
Monitor
switch
to
tape,
Load
a
reference
ZX
tape,
reference
SX
tape
and
reference
EXII
tape.
Set
Record
Cal.
VR103
(VR203)
for
2X,
VR102 (VR202)
for
SX
and
VRIO1
(VR201)
for
EXII
tape
to
their
center
position,
Adjust
Bias
VR115
(VR215)
for
2x,
VR116
(VR216)
for
SX
and
VR117
(VR217)
for
EXII
tape
to
obtain
maximum
reading
on
the
AC
voltmeter,
Feed
in
15
kHz
(-20
dB)
and
adjust
Bias
VR115
(VR215),
VR116
(VR216)
and
VR117
(VR217)
to
obtain
the
same
readings
as
source
monitor
levels
on
the
AC
voltmeter,
,

8. Feed in 400 Hz (0 4B) and adjust
Record Cal. VR103 (VR203), VR102
(VR202) and VR101 (VR201) to obtain
0 dB (500 mV) on the AC voltmeter,
Repeat above 7 and 8 two or three
times to obtain optimum performance.
Feed in 10 kHz and 20 kHz (-20 dB),
record and play them back, and check
whether the playback levels are
within the following ranges.
With Dolby NR OFF: -20 4B +3 4B
Level difference between Dolby NR
OFF and B: +2 GB
Level difference between Dolby NR
OFF and C: +3 dB
Check that the total harmonic
distortion is less than 0.9% for ZX
tape and 1.0% for SX and EXII tapes.
If satisfactory results are not
obtained, re-adjust VR105 (VR205)
referring to Step 9 "Playback
Frequency Response Adjustment" and
repeat above steps.
Overall AC Volt- i Set the Monitor switch to Source.
Frequency meter to Feed in 400 Hz and adjust the Input
Response Output i Level control to obtain ~20 dB on
Adjustment | to 20 kHz | Jacks Source/ the AC voltmeter.
(-20 4B) Tape Set the Monitor switch to Tape.
to Input Tape - Feed in 20 Hz to 20 kHz (-20 dB) and
Jacks ZX/SX/EX check to insure whether the output
Eq. ~ 70 ps levels are within -20 dB +3 dB.
(ZxX/SX) If above is not sufficient, adjust
120 ps L105 (L205) to obtain approx. -20 dB
(EX) at 20 kHz.
Dolby NR - Conduct step 15 "Record Level
OFF Calibration and Recording Bias
Current Adjustment",
If above is not sufficient, precise
re-adjustment of step 9 "Playback
Frequency Response", replacement of
Playback Head or Record Head, check
on item 4.7 "Tape Travelling Check"
will be required.
1s

1. MECHANISM ASS’Y AND PARTS LIST
7.1, Synthesis
Schematic
Ref, No,
7.1. Synthesis
OHO5111A
JA04300A
JA04299A
JA04302A
JA04303A
JA04297A
JA04301A
JA04296A
JA04298A
JA04319A
‘JA04329A
JA04340A
HA05312A
0H05142B
0H05140B
0H05141B
0H05143B
HA05340A
HA05338A
HA05339A
Description
Fig, 7.1
Schemati
Ref, No,
Synthesis
Serial No.: A13201001 -
Top Cover
Chassis Ass’y (CR-3 (Australia))
Chassis Ass’y (CR-3 (Other))
Chassis Ass’y (CR-3 (Saudi
Arabia))
Chassis Ass’y (CR-3A (U.S.A.))
Chassis Ass’y (CR-3A (Canada))
Chassis Ass’y (CR-3E (Europe))
Chassis Ass’y (CR-3E (UK))
Chassis Ass’y (CR-30)
Bottom Cover Ass’y (CR-3 &
CR-3E)
Bottom Cover Ass’y (CR-3A)
Bottom Cover Ass’y (CR-30)
Cassette Case Cover Ass’y
Front Panel (CR-3)
Front Panel (CR-3A)
-Front Panel (CR-3E)
Front Panel (CR-30)
Rec, Volume Knob Ass’y
Rec, Balance Knob Ass’y
Bias Volume Knob Ass’y
NEBR ERE eee
14
Part No,
a
Description
0J05453A
0J05407A
0E03433A
OE00868A
OE03054A
OM03797A
0M03844B
OM05148A
0M04381A
OM04811A
OM05065A
OMO05067A
OM05068A
OM05056A
OMO05069A
OM05115A
0M05111A
‘MA01001A
Top Cover Cushion
Top Cover Sheet
Chromate)
BT3x8 ©@ Binding
BT38x8 ®Countersunk
Voltage Seal 240V (CR-3E (UK))
Power Cord Label (CR-3E (UK))
Production Date Seal (CR-3A)
EP Approval Label (CR-3E
Europe))
Voltage Caution Sheet (CR-3
(Other & Saudi Arabia))
Pass Label
CSA Approval! Label (CR-3A
(Canada))
LA Label (CR-3A (U.S.A.))
Serial No. Seal (CR-3, CR-3E &
CR-30)
Serial No, Seal (CR-3A)
Amp. Number Seal
F Mark Approval Seal (CR-3E
(Europe))
F, Code Label Ass’y (CR-3,
CR-3E & CR-30)
|
BT38x6 © Binding Projected (Black
aww
BPoBeReR Be Be Be Be PHO

7.2. Chassis Ass’y (A01)
oN Te ~~. ° Xe G
F001 | cR-3
143 U4 Li6 {Other & Saudi Arabia)
Fig. 7.2
15

| mast xo. Description Qty
0E03202A | M2.6x3 © Binding (Black
Chromate)
0E03375A | Nut Hex. M9
OE03376A | Washer 9mm
0E03382A | Nut Hex. M7
0E03383A | Washer 7mm.
0E03433A | BT3x6 © Binding Projected (Black
Chromate))
OEOO846A | BT3x8 © Pan
0M04075C | Fuse Caution (CR-3A)
: Sabematic Paxt No. Description Semorratig |
7.2, Chassis Ass’y (A01) L12
AO1 JA04300A | Chassis Ass’y (Australia))
JA04299A | Chassis Ass’y (CR-3 (Other))
3A04302A | Chassis Ass*y (CR-3 (Saudi
Arabia))
JA04303A | Chassis Ass*y (CR-3A (U.S.A.))
3A04297A | Chassis Ass’y (CR-3A (Canada))
JA04301A | Chassis Ass’y (CR-3E (Europe))
JA04296A | Chassis Ass’y (CR-3E (UK))
JA04298A4. | Chassis Ass’y (CR-30)
Serial No,: A13201001 -
L13
BD OQNNRE
BREE Bee
0J05427A
|
Mount
Plate
1
JA04319A
|
Bottom
Cover
Ass’y
(CR-3
&
02
HAO5306A
|
Front
Escutchen
Ass’y
1
CR-3E)
03
BA06929A
|
Headphone
P.C.B.
Ass’y
1
JA04329A
|
Bottom
Cover
Ass’y
(CR-3A)
1
04
BAO06928A
|
Bias
Tune
Volume
P.C.B.
Ass’y
1
JA04340A
|
Bottom
Cover
Ass’y
(CR-30)
1
05
OHO5095A
|
Slide
Button
2
Serial
No,;
A13201001
-
06
BA06932A
|
Control
P.C.B.
Ass’y
1
07
BA06927A
|
Output
Volume
P.C.B.
Ass’y
1
0J05401A
|
Bottom
Cover
1
08
BA06926A
|
Input
Volume
P.C.B.
Ass’y
1
0J05420A
|
Leg
N
(CR-3,
CR-8A
&
CR-3E)
4
09.
OHO5166A
|
Cover
Plate
1
HA05357A
|
Leg
Ass’y
(CR-30)
4
10
0B12580A
|
LED
P.
Green
SLF-7250
1
0M04377B
|
Caution
Label
(CR-3A)
1
11
CA08885A
|
Mechanism
Ass’y
1
OE00888A
|
BT3x12
@
Binding
4
12
OB80150A
|
GND
Wire
Ass’y
1
0J05461A
|
Leg
Felt
N
(CR-3,
CR-3A
&
4
13
0B83132A
| 2P
Connector
1
CR-8E)
14
0H04415C
|
Head
Mounting
Cover
1
15
0J05402A_
|
Power
Switch
Joint
é
1
16
BA06935A
|
Fuse
P.C.B,
Ass’y
(CR-3
&
CR-3E)|
1
BA06934A | Fuse P.C.B, Ass’y (CR-3A) 1
BA06936A | Fuse P.C.B, Ass’y (CR-30) 1
17 0305417C | Transformer Holder 1
18 0B50100A | Power Transformer (CR-3
(Australia) & CR-3E)
OB50101A | Power Transformer (CR-3 (Other
& Saudi Arabia))
OB50099A | Power Transformer (CR-3A)
0B50102A | Power Transformer (CR-30)
7.8. Bottom Cover Ass’y (A02)
19 0J05392A | Side Chassis L
20 BAO6915A | Main P.C.B, Ass’y
21 0J05451A | P.C,B, Cushion
22 0J05403A | Monitor Switch Joint
23 0J05394A | P.C.B. Holder Front
24 BAO06931A | Power Supply P.C.B. Ass’y
25 OB05241A | Power Cord (CR-3 (Australia))
OB08533A | Power Cord (CR-3 (Other
& Saudi Arabia))
OBO8504A | Power Cord (CR-3A)
OB08093U | Power Cord (CR-3E (Europe))
OB08348A | Power Cord (CR-3E (UK))
OB08219B | Power Cord (CR-30)
26 OB90280A {Cord Bushing (CR-3 (Australia),
CR-3A & CR-3E)
OB90283A | Cord Bushing (CR-3 (Other &
Saudi Arabia) & CR-30)
27 BA06930A | Pin Jack P.C.B. Ass’y
28 0J05395A | P.C.B, Holder Rear Fig, 7.3
29
OHO5119A
|
Rear
Panel
(CR-3
(Australia))
ne
OH05121A | Rear Panel (CR-3 (Other & Saudi
Arabia))
0H05117B | Rear Panel (CR-3A)
0HO5118A | Rear Panel (CR-3E)
0H05120A | Rear Panel (CR-30)
30 OJO5393A | Side Chassis R
by FPR NSN KPO Be BOR HEE Mee OB Ree OR ERR Reo
31 OBO8515A | Insu-lock SK B80 1
32 -|0B81771A | Voltage Selector (CR-3 (Other &
Saudi Arabia))
33 OB60503A | Voltage Selector P.C.B.
(CR-3 (Other & Saudi Arabia))
LO1 OEOO868A | BT 3x8 © Binding 1
LO2 QOE03212A | BT2.6x6 © Binding with Toothed
Lock Washer
LO3 OE03435A |M2.6x6 © Binding with Toothed
Lock Washer
L04 OEO00857A |BT3x6 © Binding
Lod OB008S21A | BT3x8 O Binding (Black
Chromate)
LO6 OEO0985A |M3x6 © Binding (Black Chromate)
(CR-3 (Australia), CR-3A,
CR-3E & CR-30)
OE00985A | M3x6 © Binding (Black Chromate)
(CR-3 (Other & Saudi Arabia))
LO7 0J05108A _ | Hole Plug No.9
L08 0E03432A | BT3x6 Tapping (Black
Chromate)
LOo9 OE03438A | BT4x6 © Binding
OEO0859A | BT2.6x6 @Binding
QEO3437A | FT2.5x3.5 © Pan (Black
Chromate)
NENW OF
16

Schematic
Ref, No.
Part No,
CA08885A
0C80021A
0C82720A
CA80006A
0C80019B
0C82723A
OC80617A
0C80618A
0C80619A
0C80620A
OC80621A
0C80013A
0C80014A
0C80015B
CA80366A
0C81420A
0C81422A
CA80726A
0C80612A
0C80614A
CA80200A
OCO08762A
OCO8761A
0C08763A
OC80605A
CA08637A
CA08659A
0C08776A
CA80731A
OC80003A
0C80004A
GA02201A
CA80733A
OCO8768A
OCO8889A
OCO08886A
OC80007A
CA08658B
OCO8775A
CA80732A
OCO8771A
CA80365A
OC82711A
CA80725A
0C80613A
CA80368A
0C81423A
OC80610A
OC80622A
O0C80623A
0C80624A
O0C80626A
OC80625A
0C80017B
CA80736A
0C80022B
CA80011A
CA80204A
O0C80628A
OC80630A
0C80629A
0C82724A
CA80735A
CA80730A
OC81417A
0C81418A |
OC81416A
OC80027A
0C81415A
CA80007A
0C80010D
0C80012A
O0C82701A
0C80029A
OC82699A
0C82702A
OC82714A
0C82726A
CA80729A
0C82700A
OC82698A
Description
Mechanism Ass’y
Serial No.: A13201001 -
Eject Lever
Eject Lever Spring
Pneumatic Damper Ass’y
Eject Spring
Cassette Case Holder L
Back Tension Arm Spring
Back Tension Arm Collar
Back Tension Arm
Back. Tension Arm Pulley
Back Tension Arm Belt
Lock Lever Spring
Lock Lever Collar
Lock Lever
Supply Pressure Roller Arm Ass’y
Supply Pressure Roller Arm
Spring
Supply Pressur Roller Arm
Track Spring
Supply Reel Hub Ass’y
Spring Holder
Supply Reel Hub Spring
Cassette Case Ass’y
Head Hight Adjustment Gear
Head Hight Adjustment Screw
Azimuth Alignment Screw
Wire Clamper
Head Mount Base Sub Ass’y
R-3L Record Head Ass’y
Head Plate Spring (L)
4P Connector
Head Base Hold Plate
Steel Ball 3mm
E-4F Erase Head
2P Connector
E.H, Hold Plate
E.H. Hold Plate Tapering Spring
E.H. Hold Plate Spring
Steel Ball 2mm
P2H-3L Playback Head Ass’y
Head Plate Spring (R)
4P Connector
Tape Guide Plate
Head Base Sub Ass’y
Head Base Spring
Take-up Reel Hub Ass’y
Take-up Reel Hub Spring
Take-up Pressure Roller Arm
Ass’y
Take-up Pressure Arm Spring
Cassette Case Spring
Switch Hold Plate
Switch Plate
Switch Collar A
Leaf Switch
Switch Collar B
Record Protector Lever
Mechanism Chassis
Cassette Hold Spring
Shut-off P.C.B. Ass’y
Brake Ass’y
‘Brake Spring B
Brake Arm Collar
Brake Arm
Reel Motor Holder
9P Connector
Reel Motor Ass’y
Cam Gear B
Control Motor Holder
Thrust Spring B
Mode Switch
Warm Thrust Bush
Control Motor Ass’y
Cassette Case Holder R
Eject Sensor Switch
Supply Capstan Flange
Back Tesion Spring
Supply Flywheel
Capstan Belt
Flywheel Holder
Floating Rubber
Capstan Motor Ass’y
Take-up Capstan Flange
Take-up Flywheel
PERO RMN RRM BOR EER RRR eR RDN NRE BRB ERROR RR RRR REE BRE Re ER
‘ Schematic
81
7.4. Mechanism Ass’y (B01)
17
0C82718A
OC80037A
CA80734A
0£00181A
OE032354
0E03052A
0E03236A
0E03229A
0E03043A
OB03225A
OE03226A
0C81421A
O0C82725A
0E03049A
OE00976A
OE00025A
OE00117A
OE00866A
OCO8774A
0C08773A
0E03228A
0E03232A
0E03222A
OE00691A
0E00222A
OE03035A
OE03227A
OE03231A
0E03041A
0E03233A
0E03230A
OC82717A
OE03237A
OE03045A
0E00694A
0E03234A
0E03044A
0C82716A
0E03042A
0E00912A
Thrust plate
Insu-Lock
5P Connector
E-Ring 3mm
Plastic Washer 2x5x0.25
CS Stopper Ring 2.4mm
M2x5 ® Pan (3A)
FT2.5x6 @Pan
FT2,5x10 ®Pan
Washer 1,8x3.8x0.5
Washer 2.1x4,5x0.1
Supply Pressure Roller Arm
Adjustment
M2.6x9 © Pan with Washer
Washer 1.8x3,2x0.5
M2x5 © Binding
Spring Washer 2mm
Washer 2x4,3x0,4
M2.6x4 ® Binding
Plate Washer L
Plate Washer R
FT3x4 ®@pan
M1.7x7 @Pan
Washer 1,8x3.8x0.3
M2x8 ®Pan
E-Ring 2mm
M2x8.2 © Truss
Washer 2,7x5x0.5
M2x30 © Pan
FT2.5x4 ®Pan
Wahser 2.6x8x1
ST2.6x12 © Pan
Capstan Washer T
Nut Hex. M2.6
M2,6x3 © Binding
Nut Hex, M2
M2x3 © Pan
FT2.5x20 © Pan
Capstan Washer S
FT2,5x5 @ Pan
Washer 2.6x4.7x0.25 (Poly)
Ki gaia . sé
NOB BNE EEE MN HORNE HHP HHRTNTNO HONNOWNE WHO

7.4, Mechanism Ass’y (B01)
1.5.
Front
Escutcheon
Ass’y
(B02)
NAKA-00120 / DRUCK 1
18
Fig. 7.5
Fig. 7.4
ee
Wo.”
apres
HAO5306A | Front Escutcheon Ass’y
BO2
Serial No.: A13201001 -
Rewind Button
Stop Button Ass’y
Play Button Ass’y
F.F. Button
Pause Button Ass’y
Rec. Button Ass’y
Function Plate
Eject Button Ass’y
Eject Knob Spring
Front Escutcheon
Power Switch Knob Spring
Power Switch Knob
Function Button
Display Lens
LED Lens B
EX Switch Spring
Counter Button
Push Switch Button Spring
Push Button
LED Lens Adhesive Tape
F. Plate Adhesive Tape
0H05126A
HA05359A
HA05343A
0H05129A
HA05361A
HA05360A
O0HO05098B
HA05344A
0J05404A
0H05122B
0J05405A
0H05125B
0HO5094A
0H05101A
0HO05103A
0J05452B
OHO5096A
0J05406A
0H05097A
0J05458A
0J05459A
<7.5. Front Escutcheon Ass’y (B02)
1
ORO TOD fat fa fe Pat ND Bad at fat fad a Pad ad att at et

NAKA-00120 / DRUCK 2
8.
8.2, Pin Jack P.C.B. Ass’y
8.4. Output Volume P.C.B. Ass’y
MOUNTING DIAGRAMS AND PARTS LIST
Notes: 1. Mounting diagram shows a dip side view of the printed circuit board.
2. Diode is 1SS53, 181555, or 18S176 unless otherwise specified.
8. Following transistors are interchangeable with each other,
a. 2SA733, 2SA608SP, 2SA1048, 2SA1175
b. 2SC945, 2SC536SP, 2SC2458, 2SC2785
4. Abbreviation for part name:
TR — Transistor, SiD — Silicon Diode, ZD — Zener Diode
RK
—
Carbon
Resistor,
RM
—
Metal
Film
Resistor,
RF
—
Fail
Safe
Type
Resistor
CE
—
Electrolytic
Capacitor,
CML
—
Mylar
Capacitor,
CC
—
Ceramic
Capacitor,
CPP
—
PP
Capacitor,
CMM
—
Metalized
Mylar
Capacitor,
CSP
—
Polystyrene
Capacitor,
C
—
Mica
Capacitor
8.1. Fuse P.C.B. Ass’y
Fig. 8.1
Pin Jack
Fig. 8.2
Fig. 8.4
8.3. Input Volume P.C.B. Ass’y
8.5. Bias Tune Volume P.C.B. Ass’y
Fig. 8.5
8.6.
Headphone
P.C.B.
Ass’y
6 Shut-off
Pi
ulse
to Main RC.B.
Fig. 8.7
8.3. Input Volume P.C.B. Ass’y 8.7. Shut-off P.C.B. Ass’y
CA80011A | Shut-off P.C.B. Ass’y
0C80047A | Shut-off P.C.B.
OBO6388A | TR 2SC2812
OB06389A | Photo Refrector
NJL5141
0B09840A | RK 680 Leadless
OB09841A |RK 15K
0C81330A |RM 750
0C81334A | Wire 0V13130N (1)
0C81335A | Wire 0V10115N (1)
Schematic
Ref. No,
8.1. Fuse P.C.B. Ass’y
BA06935A
BA06934A
BA06936A
Fuse P.C.B. Ass’y BA06926A |Input Volume P.C.B.
(CR-3 & CR-3E) Ass’y
Fuse P.C.B. Ass’y
(CR-3A) 0B60471A [Input Volume P.C.B |Q601
Fuse P.C.B. Ass’y
(CR-30)
Fuse P.C.B.
OB60479A
Fuse T800mA (CR-3
& CR-3E)
Fuse 1.0A (CR-3A)
Fuse 1.0A (CR-30)
Fuse T500mA (CR-3
& CR-3E)
Fuse 1.0A (CR-3A)
Fuse 1.0A (CR-30)
CC 4700P 400V
(CR-3, CR-3A &
OB90287A
OB90286A
0B90290A
0B90288A
OB90286A
O0B90290A
0B41825A
Output Volume
P.C.B. Ass’y
BA06927A
0B60472A
0B30078A
Output Volume
P.C.B
Volume 10KAx2
RM 2.21K 1/6W F
RM 2.21K 1/6W F
CR-3E)
Wire
1007
52
BLK
C
0B41826A
|CC
4700P
250V
0J05419A
|
Volume
Earth
Plate
'
|
(CR-30)
(1)
OB71006A
|
Power
Switch
SDL1P
OBO08349B
|
Fuse
Clip
8.5.
Bias
Tune
Volume
P.C.B.
Ass’y
UF-0033#01
(6)
0B81776A_
|Contact
Pin
BA06928A
|
Bias
Tune
Volume
(CR-3 & CR-3E) (5)
Fuse Label T500mA
250Vx2 (CR-3 &
CR-3E) ql)
Fuse Label T800mA |VR303
0M04954A
0B60475A |Bias Tune Volume
P.C.B
0B30080A | Volume 100K(D)x2
250Vx2 (CR-3 & 0V10050C |Wire 1007 52 BLK C
CR-3E) qa) 0J05419A | Volume Earth Plate
(1)
8.2. Pin Jack P.C.B. Ass’y
8.6. Headphone P.C.B. Ass’y
BAO6930A | Pin Jack P.C.B.
Ass’y
0M05082A
BA0G6929A | Headphone P.C.B.
.
Ass’y
OB60470A | Pin Jack P.C.B
CC 1000P 25VM
4P Connector
4P Connector
Ground Ass’y
4P Pin Jack
0B60477A | Headphone P.C.B.
0B81757A |Heaphone Jack (1)
0B81756A (1)
19