Nakamichi - NEW HiFi
 Nakamichi
ER-/ZA/UR-SA
LIR-/7/CR-5
Discrete Head Cassette Deck
Owners Manual
Congratulations!
You have chosen an exceptional cassette deck. The Nakamichi CR-7A/CR-5A boasts
superb head and transport design, incorporating such highly refined original features as
the Discrete 3-Head system and a direct-drive dual capstan transport. This approach
assures the ultimate in vital cassette performance. Ample use of innovative Nakamichi
technology thoroughly lets you explore the full potential of every tape, to complement
any program source and to achieve virtually perfect recording and playback.
In order to take full advantage of this unit's superior performance, please read this
manual in its entirety and retain it for future reference.
Thank you.
Nakamichi Corporation.
Nakamichi is producing Hi-Fi equipment for 52 countries of the world.
Many countries have safety regulations, to which Nakamichi has to comply during production.
The additional mentioning of “A” on your model means that this product has been produced according
to the requirements in the United States of the Underwriters Laboratories (UL), as well as other
applicable state and Federal safety standards.
Within the United States, Nakamichi has authorized its local distributors to offer warranties only on
products which have been produced for the United States market in accordance with the foregoing
standards.
Notice to Purchasers of the Model CR-7/CR-5;
Reference in the illustrations and the text is made to "CR-7A/CR-5A", but operation and functions are
completely identical to your model.
RISK OF ELECTRIC
SHOCK. DONOTOPEN!
CAUTION
TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO
USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
The lightning flash with arrowhead
A symbol, within an equilateral triangle, is
intended to alert the user of the presence
of uninsulated “dangerous voltage”
within the product's enclosure; that may
be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an
A equilateral triangle is intended to alert
the user of the presence of important
operating and maintenance (servicing)
instructions, in the literature
accompanying the appliance.
WARNING
TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR
MOISTURE.
This equipment generates and uses radio
frequency energy and if not installed and used
properly, that is, in strict accordance with the
manufacturer's instructions, may cause
interference to radio and television reception. It
has been type tested and found to comply with
the limits for a Class B computing device in
accordance with the specifications in Subpart
J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such
interference in a residential installation,
However, there is no guarantee that
interference will not occur in a particular
installation. If this equipment does cause
interference to radio or television reception,
which can be determined by turning the
equipment off and on, the user is encouraged
to try to correct the interference by one or
more of the following measures:
— reorient the receiving antenna
— relocate this equipment with respect to the
receiver
— move this equipment away from the receiver
— plug this equipment into a different outlet
so that equipment and receiver are on
different branch circuits.
If necessary, the user should consult the
dealer or an experienced radio/television
technician for additional suggestions. The user
may find the following booklet prepared by the
Federal Communications Commission helpful:
“How to Identify and Resolve Radio-TV
Interference Problems”.
This booklet is available from the U.S.
Government Printing Office, Washington, DC
20402, Stock No. 004-000-00345-4.
Please record the Model Number and Serial
Number in the space provoded below and
retain these numbers.
Model Number and Serial Number are located
on the rear panel of the unit.
Model Number: CR-7A/CR-5A
CR-7/CR-5
Serial Number:
CONTENTS
Safety Instructions. .........e_——————————.—... 2
Controls and Features ....................... 3
OT NEC ONS A a mr ra ea 5
OniCGassetieïlapes. 4 atera ee. 5
Operations a ete rara rara 6
Playback Head Azimuth Adjustment (CR-7A).. 8
Auto Calibration (CR-7A) ............-....... 8
Real-Time Tape Counter (CR-7A)............ 9
Auto Fade"{CR=7A) 0 EA „10
Use of the Remote Control Unit (CR-7A)..... 10
Bias Fine Tuning (CR-5A)..............._...—. 11
More Convenient Features................... 11
Mai a A CE Ee av eed, | 12
Specifications mr ne or la 12
Troubleshooting: rrr rn ra a aja 13
Optional Accessories .........e=.ee- eee 13
Safety Instructions
The following safety instructions have been
included in compliance with safety standard
regulations. Please read them carefully.
1. Read Instructions — All the safety and
operating instructions should be read
before the appliance is operated.
2. Retain instructions — The safety and
operating instructions should be retained
for future reference.
3. Heed Warnings—All warnings on the
appliance and in the operating instructions
should be adhered to.
4. Follow Instructions — All operating and use
instructions should be followed.
5. Water and Moisture—The appliance should
not be used near water —for example, near
a bathtub, washbowl, kitchen sink, laundry
tub, in a wet basement, or near a swimming
pool, etc.
6. Carts and Stands —The appliance should be
used only with a cart or stand that is
recommended by the manufacturer.
7. Wall or Ceiling Mounting —The appliance
should be mounted to a wall or ceiling only
as recommended by the manufacturer.
8. Ventilation—The appliance should be
situated so that its location or position does
not interfere with its proper ventilation. For
example, the appliance should not be
situated on a bed, sofa, rug or similar
surface that may block the ventilation
openings; or placed in a built-in installation,
such as a bookcase or cabinet that may
impede the flow of air through the
ventilation openings.
9, Heat—The applicance should be situated
away from heat sources such as radiators,
heat registers, stoves, or other appliances
(including amplifiers) which produce heat.
10.Power Sources —The appliance should be
connected to a power supply only of the
type described in the operating instructions
or as marked on the appliance.
11.Grounding or Polarization —Precautions
should be taken so that the grounding or
polarization means of an appliance is not
defeated.
12.Power-Cord Protection —Power-supply
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, paying
particular attention to cords at plugs,
convenience receptacles, and the point
where they exit from the appliance.
13.Cleaning—The appliance should be cleaned
only as recommended by the manufacturer.
14.Monuse Periods —The power cord of the
appliance should be unplugged from the
outlet when left unused for a long period of
time.
15.0bject and Liquid Entry—Care should be
taken so that objects do not fall and liquids
are not spilled into the enclosure through
openings.
16.Damage Requiring Service—The appliance
should be serviced by qualified service
personnel when:
A. The power-supply cord or the plug has
been damaged; or,
B. Objects have fallen, or liquid has been
spilled into the appliance; or
C. The appliance has been exposed to
rain; or,
D. The appliance does not appear to
operate normally or exhibits a marked
change in permormance; or,
E. The appliance has been dropped, or the
enclosure damaged.
17 Servicing—The user should not attempt to
service the appliance beyond that
described in the operating instruction. All
other servicing should be referred to
qualified service personnel.
Controls and Features
Power Switch Eject Button
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Counter Reset Button
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Power Switch Eject Button
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(1) Timer Switch
This switch is used for timer-activated
recording or playback. In ordinary operation, it
must be set to “Off”. (— p.7)
(2) Remote Control Sensor
The signals from the supplied wireless remote
control unit are detected by this sensor. When
a command is received, the indicator lights up.
— p.10)
(3) Pause Button
When this button is pressed, tape travel during
recording or playback is temporarily
interrupted and the indicator lights up. To start
the tape again, press the Play button.
Cassette Compartment
(4) Master Fader Buttons “..” (Up),
LL A 1 (Down)
These buttons serve to perform fade-in and
fade-out during recording.(— p.11)
(5) Stop Button
Press this button to completely stop the tape
transport from any mode. When the button is
activated, the indicator lights up.
(6) Rec Mute Button
By pressing this button during recording, the
recording signal is cut off for as long as the
button is kept depressed, and the indicator
lights up. The indicator also lights in the
record/pause mode, during auto fade, and in
Indicator Panel
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the “ ” " condition of the master fader. (—p.11)
(7) Record Button
Press this button to set the deck to the record
mode. When the button is activated, the
indicator lights up.
(8) Tape Length Button (CR-7A)
Serves to set the tape length (C-46/C-60/C90)
for the real-time tape counter. The selected
position is displayed by the Tape Length
indicator. (—p.9)
(9) Playback Azimuth Control (CR-TA)
This control is used for adjustment of the
playback head azimuth. (— p.8)
(10) Bias Tune Control (CR-5A)
This control serves for fine adjustment of the
recording bias current. (— p.11)
(11) Manual Tape/Eq Switch
When this switch is set to “On”, the auto tape
selector is defeated and the indicator of the
switch lights up. In ordinary operation, set this
switch to “Off”. (— p.7)
(12) Auto Fade Switch (CR-7A)
If this switch is set to “On” during recording,
automatic fade-out is initiated when the
remaining tape time indication reaches “0:00”.
(— p.10)
(13) Subsonic Filter Switch (CR-7A)
Used to cut off harmful low-frequency noise
such as turntable rumble etc. during recording
from phonograph records. At other times, the
switch should be set to “Off”.
(14) MPX Filter Switch
Used to suppress the 19-kHz multiplex carrier
signal, which could interfere with proper Dolby
NR operation when recording from FM stereo
broadcasts. At other times, the switch should
be set to “Off”,
(15) Monitor Button
For tape playback and for off-the-tape
monitoring during recording, the “Tape”
position ( indicator lit) should be
selected. For record level setting etc., the
“Source” position ( | Source | indicator lit) is
used.
(16) Output Level Control
Serves to adjust the line output level and the
headphones listening level.
(17) Input Level Controls (Left, Right)
These controls serve to adjust the input
(record) level to the deck as well as the
left/right channel balance.
(18) Master Level Control
After the Master Level control has been turned
up to a certain degree, the left/right channel
balance can be adjusted with the Left and
Right Input Level controls. Then use the
Master Level control for the final record level
setting.
(19) Auto Calibration Button (CR-7A)
Serves to initiate the auto calibration process.
(— p.8)
(20) Peak Hold Button (CR-7A)
This button is used to switch the peak hold
function of the level meters on and off. When
the function is selected, the Peak Hold
indicator lights up.
(21) Dolby NR Button
With each push of this button, the deck's noise
reduction mode is switched between Dolby
В-Туре NAS: Dolby C-Type NR—:Dolby NR
Of. The respective mode is shown by the
Dolby NR indicator.
(22) Reset Button (CR-7A)
This button must be pressed when an error
has occurred during auto calibration or if you
wish to terminate the auto calibration process.
(—p.9)
(23) Manual Eq Selector
(24) Manual Tape Selector
After the auto tape selector was defeated by
setting the Manual Tape/Eq switch to “On”, the
desired settings can be selected with these
buttons. (— p.7)
(25) Fast-Forward Button
Used to fast-forward the tape. During
operation, the indicator lights up.
(26) Counter Mode Button (CR-7A)
With each push of this button, the counter's
indication mode is switched between
elapsed-time indication=>remaining-time
indication > 4-digit tape counter >.... (— p.9)
(27) Play Button
Used to start playback or to start recording
from the record/pause mode. During operation,
the indicator lights up.
(28) Memory Stop/Auto Repeat Switch
If the switch is set to “Memory Stop”, the tape
is stopped when the tape counter reset point
(“0000”) is reached during fast-forward or
rewind. If the switch is set to "Auto Repeat”,
playback of the whole cassette side is
automatically repeated. (— p.11)
(29) Rewind Button
Used to rewind the tape. During operation, the
indicator lights up.
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(1) Tape Counter
(2) Tape Length Indicators
(3) Peak Hold Indicator
(4) Auto Calibration Indicators
(5) Peak Level Meters
(6) Tape Position Indicators
(7) Eq Indicators
(8) Dolby NR Indicators
(9) MPX Filter Indicator
(10) Source/Tape Indicators
(11) Subsonic Filter Indicator
(12) Auto Fade Indicator
(13) Azimuth Center Position Indicator
(14) Remaining Indicator
(15) Time Indicator
Connections
Refer to the instructions for your amplifier or
receiver and use the supplied shielded cables
with RCA-type plugs to establish connections
as shown in the chart. Take care not to mix up
left and right channels.
While making connections, all power switches
should be OFF.
System Remote Terminal
By connecting the optional wired remote
control unit RM-5 to this terminal, the deck s
tape transport functions can be operated from
a convenient location. (However, the RM-5
does not permit adjustment of playback head
azimuth for the CR-7A.) When this terminal
is connected to a Nakamichi component
equipped to serve as center component of
an entire audio system (such as the
CA-7A), integrated remote control of the
entire system is possible. For details,
please refer to the Owner's Manual of the
center component.
Microphone Connections
As this deck has only line input facilities, a
separate microphone mixer with line-level
outputs must be used for microphone
recordings. Connect the output of the mixer to
the deck's “Line Input” jacks. Nakamichi offers
the optional MX-100 Microphone Mixer, which
provides three inputs for left, right, and center
blend (L+ R). To power the MX-100, the
separate PS-100 Power Supply is required.
On Cassette Tapes
Precautions
(1) C-120 cassettes (playing time one hour per
side) contain extremely thin tape which
breaks or snarls easily, is sometimes
subject to stretching and also is of low
sensitivity. Therefore, C-120 cassettes are
not recommended for high-fidelity recording.
(2) Do not pull out the tape from the cassette
housing.
(3) Be careful not to turn the cassette reels
with the fingers, to avoid tape slackening.
(4) Store cassettes away from heat, high
humidity, dust, and magnetic fields such as
caused by speakers, TV sets etc.
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Cassette Tabs
You can protect valuable recordings from
accidental erasure and re-recording by
completely removing the appropriate tab on the
top end of the cassette. The tab for each side
is located on the top left-hand corner as you
face the side. Use a small screwdriver and
push the tab down to break it off. Do not leave
To Amplifier's “Tape Play”
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— MX-100
the broken tab in the recess.
If you wish at a later date to record over a side
for which the tab has been removed, cover the
tab opening with a piece of adhesive tape. At
this time, be careful not to cover the detection
slots for high-position and metal tapes which
serve to trigger the auto tape selector.
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Operation
— Precautions Before Operation
1. This deck incorporates a muting circuit
cannot be operated.
2. If the power is turned on while the Timer
or playback will start automatically.
the timer function is not desired.
Preparations
(1) Set the Manual Tape/Eq switch to “Off" and
insert a cassette.
(2) The auto tape selector determines the type
of tape inserted and automatically sets the
tape position and equalization accordingly.
which is active for about 4 seconds after
the power was switched on, until all circuits
have become stable. (With the CR-7A, the
“Ready” indicator and with the CR-5A, the
Stop button indicator flashes.) During the
muting interval, the tape transport buttons
switch is set to “Rec” or “Play”, recording
To prevent accidental erasure of a tape, be
sure to set the Timer switch to “Off” when
Playback
(1) Select the “Tape” position with the Monitor
button ( indicator lit).
(2) Use the Dolby NR button to select the same
noise reduction system as utilized during
recording.
(3) Press the Play button.
(4) For CR-TA users: Perform azimuth
adjustment if required. (Refer to the
paragraph “Playback Head Azimuth
Adjustment” on page 8.)
(5) Adjust the desired listening level with the
Qutput Level control.
* The logic-controlled transport of this deck
permits going from any mode into any other
li.e. from play to rewind, from rewind to
fast-forward, etc.) without having to use the
Stop button.
E Dolby NR System
This cassette deck provides a choice
between the Dolby B-Type and the Dolby
C-Type noise reduction systems. The Dolby
B-Type NR yields approximately 10 dB of
noise reduction in the high frequencies. The
Dolby C-type NR is a further refined system
which achieves a S/N ratio improvement of
about 20 dB in the range from 2 kHz to 8
kHz, where noise is most readily audible.
For playback of a tape which was recorded
with Dolby B-type MR, select the "В"
position and for playback of a tape
recorded with Dolby C-type NR, select the
“C” position with the Dolby NA button.
3. If during playback or recording the power
to the deck was switched off by an external
timer or the like, it may afterwards not be
possible to depress the Eject button. Do not
apply excessive force in such a case. Set
the Timer switch of the deck to “ОН”, and
then switch the power to the deck back on.
The cassette can now be removed.
4. This cassette deck incorporates a special
circuit designed to take up any tape slack
when a cassette is inserted. Upon closing
the cassette compartment or switching on
the power, the left spindle will rotate and
the tape counter indication may change
slightly. This behavior is normal and not a
fault with the deck.
(Refer also to the paragraph “Auto Tape
Selector” on page 7.) The respective Tape
Position and Eq indicators light up.
(3) For CR-7A users: When wanting to display
the elapsed or remaining time on the
5. Voltage Selector
AC voltage is factory-set for the country in
which you purchased your cassette deck.
The voltage selector permits re-setting of
mains voltage in case the deck is to be
used in a different country.
Note:
Safety regulations in certain countries
prohibit inclusion of a voltage selector.
This feature, therefore, may be absent
from your deck.
—i 120V
220 - 240V —
real-time tape counter, select the tape
length (C-46/C-60/C-90) with the Tape
Length button. (Refer to the paragraph
“Real-Time Tape Counter“ on page 9.)
Recording
(1)For CR-7A users: Perform auto calibration.
(Refer to the paragraph “Auto Calibration”
on page 8.)
(2) Use the Dolby NR button to select the
desired noise reduction system: “Dolby
B-Type NR", “Dolby C-Type NR” or “Dolby
NR Off”.
(3) When recording from FM broadcasts, set
the MPX Filter switch to “On” (MPX Filter
indicator lit).
For CR-7A users: When recording from
records, set the Subsonic Filter switch to
“On” if required (Subsonic Filter indicator
lit).
(4) By pressing the Record button, the deck
enters the record/pause (recording stand-
by) mode.
(5) Select the “Source” position with the
Monitor button ( indicator lit).
(6) Adjust the recording level, referring to the
chart below. First open up the Master Level
control to a certain degree. Then, while
watching the indication of the Peak Level
meters, gradually turn up the Left and Right
Input Level controls to achieve the proper
recording level and left/right channel
balance. For final adjustments of the overall
recording level, the Master Level control
can again be used.
(7) Press the Play button to start recording.
(8) For short-term interruption of recording,
press the Pause button. To resume
recording, press the Play button again.
(9) To check the quality of the recording in
progress, you can monitor the playback
signal by selecting the “Tape” position with
the Monitor button. In the “Source” position,
the input signal before recording is heard.
Record Level Setting
L
Peak —dE 40 = 30 ; 20 : 10
Hold R
* These values should be used as a general
guideline. Actual requirements may vary to
a certain degree, depending on the tape in
use and the recording source.
Normal Type Tapes, High-Position Tapes:
The indicators should be allowed to read
as high as +5 dB on short program peaks.
ma
3 = 5 * 7 = 10+dB
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Metal Tapes:
The indicators should be allowed
to read as high as +8 dB on
short program peaks.
Timer Recording or Playback
(1) Establish connections as shown in the
chart and switch on the power to all
components.
(2) Confirm that the appropriate tape position,
equalization and Dolby NR settings are
selected.
(3) For timer-activated recording, set the
recording level to suit the expected signal
and activate the MPX filter if required. For
timer-activated playback, set the line output
to the desired level.
(4) For timer-activated recording, set the
deck's Timer switch to “Rec”.
For timer-activated playback, set the switch
to “Play”.
BM Peak Level Meters
The level meters of this deck cover a full
50-dB range and accurately indicate even
short signal peaks. The CR-TA also
incorporates a peak hold function which can
be switched on and off with the Peak Hold
button. During playback, the meters display the
level as recorded on the tape. Readings are
not affected by turning the Qutput Level control.
E Auto Tape Selector
» This deck incorporates an Auto Tape
Selector which detects the inserted tape type
and accordingly selects the required tape
position and equalization settings (refer to the
chart below). The auto tape selector operates
when the Manual Tape/Eq switch is set to
“Off” (indicator out).
(5) Set the timer to the desired switch-on and
switch-off time.
(6) At the pre-selected time, the timer will
supply power to the components and
recording or playback will start
automatically.
Note:
e Be sure to set the deck’s Timer switch to
“Off” when timer recording or playback is
not desired.
e |f the record-protection tabs of the inserted
cassette are removed, timer-activated
recording is not possible and the deck will
go into the playback mode.
P When wishing to manually select the tape
position and equalization, first set the Manual
Tape/Eq switch to “On” (indicator lit) to defeat
the auto tape selector. Now the desired tape
position can be chosen by pressing the
appropriate button of the Manual Tape
selector. The equalization setting still changes
automatically depending on which button is
pushed. A different equalization setting can be
selected by pressing the Eq button. The
manual setting option for bias and equalization
permits recording on older metal or
high-position tapes lacking detection slots.
| Another advantage of the manual setting
option for the experienced recordist is the
possibility to use the 70-microsecond
equalization for EX (normal) type tapes, or the
120-microsecond equalization for SX
(high-position) or ZX (metal) type tapes. When
recording normal type tapes at the “Eq 70 us”
setting, the MOL (maximum output level) in the
medium to low frequency range increases and
Auto Tape Selector Setting
Tape Position Indicator Eq Indicator
TYPE
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Normal Position
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tape noise is reduced. This may be preferable
for music which contains relatively little
high-frequency energy. On the other hand, if
high-position or metal tapes are recorded at
the “Eq 120 us” setting, the tape noise will
increase somewhat, but upper-range MOL is
extended, so that even strong high-frequency
peaks can be easily accommodated. Be sure
to set the equalization in playback to the
same position as used in recording.
* When selecting a non-standard equalization
setting manually with the CR-7A, operate
the Eq button only after the auto calibration
process was completed. Otherwise the
equalization will be reset during calibration
to the standard setting shown in the chart
below,
* Pages 8 through 10 apply to CR-7A users only.
Playback Head Azimuth Adjustment
In order to ensure perfect playback also of
commercially available music tapes or
cassettes recorded on another machine, this
deck incorporates an Azimuth Fine Tuning
System. The azimuth angle (perpendicularity
of the magnetic head vs. the tape) can be
adjusted either with the Playback Azimuth
control on the deck's front panel or while
seated at the listening position, using the
supplied wireless remote control unit.
Azimuth Adjustment Procedure
(1) Insert a recorded cassette and set the deck
to the playback mode. (Fig. A)
(2) While listening to the playback sound,
operate the Playback Azimuth control (or
the Azimuth Adjustment buttons on the
remote control) until the best
high-frequency response (brightest sound
quality) is achieved. This adjustment is
facilitated by first dislocating the azimuth
drastically until upper-range sound quality
clearly deteriorates, and then ‘backing up’
gradually to the optimum setting. (Quick
push-and-release of a button on the remote
control serves for fine adjustment, while
continuous adjustment is performed by
keeping a button depressed.)
Auto Calibration
In order to extract maximum performance from
every tape, this deck incorporates an Auto
Calibration System which automatically
performs the following three vital functions:
adjustment of playback head azimuth, separate
level calibration for left and right channel, and
bias current adjustment for each channel.
It is highly recommended to perform auto
calibration before every recording, to assure
optimum results.
Auto Calibration Procedure
(1) Confirm that the Timer switch is set to
“Off”, then switch on the power to the
cassette deck.
(2) Insert the cassette tape.
(3) If an older high-position or metal tape
without detection slots is used, set the
Manual Tape/Eq switch to “On” and then
select the correct tape position with the
Manual Tape selector.
(4) When the Auto Calibration button is
pressed, the Azimuth indicator begins to
flash and the function sequence listed
below is performed almost instantaneously,
after which the deck goes into the
L =
Peak -dB 40 В 30 " 20
Hold R
A
®
+— Azimuth Center Position Indicator
While the adjustment is performed, the
deck's Peak Level meters are automatically
switched to the azimuth display mode (Fig.
B) and the Azimuth Center Position
indicator lights up. The upper row of
indicator segments now shows the actual
azimuth position relative to the Center
Position indicator. This indicator
corresponds to the standard azimuth
position as adjusted at the factory by
means of a test tape, and it also coincides
with the center position of the Playback
Azimuth control. The indication can serve
as a visual clue to the present setting when
performing azimuth adjustment from the
listening position by means of the remote
control.
(3) Approximately 3 seconds after the
adjustment was terminated, the Peak Level
meters revert to normal operation.
recording mode and the calibration process
starts.
Po The line input and output are cut off
(muted).
P The calibration starting point is
memorized, and the tape counter reverts
to “0000” ¡if it is in the 4-digit indication
mode.
№ If the Manual Tape/Eq switch is set to
“On” and the Eq setting does not
correspond to the tape position, the
standard Eq setting for that tape is
selected automatically (for example; EX
tape/Eq 70us > EX tape/Eq 120us).
№ If the deck is set to “Source”, the
“Tape” position is selected.
p Regardless of the selected Dolby NR
position, the Dolby NA system is set to
“Off”,
P The tape is fast-forwarded for 1 second.
(5) First, azimuth calibration is performed.
During the adjustment, the Azimuth
indicator flashes.
(6) When the azimuth adjustment is completed,
level calibration begins (the Azimuth
indicator goes out and the Level indicator
lights up). After level calibration, the bias
e As the optimum azimuth point differs with
each cassette, it is recommended to
perform the azimuth adjustment every time
a tape is played back.
® |t is also possible to adjust the playback
head azimuth during off-the-tape monitoring
in recording. The change of sound quality
caused by altering the azimuth setting does
not affect the actual recorded sound.
® The Azimuth Adjustment buttons on the
remote control unit operate independently
from the Playback Azimuth control on the
deck. However, if the power to the deck
was switched off and on again, or if a tape
was ejected, the playback head azimuth
reverts to the position determined by the
setting of the Playback Azimuth control on
the deck's front panel.
calibration is initiated (Level indicator goes
out, Bias indicator starts flashing).
(7) After one bias adjustment cycle was
performed, level calibration and bias
calibration are repeated.
(8) When the second bias adjustment cycle is
completed, the Bias indicator goes out, the
Ready indicator starts flashing, and the
following functions are performed.
P The deck reverts to the monitor mode
and Dolby NR settings that were
selected prior to calibration.
P The tape is rewound to the calibration
starting point.
(9) When the starting point is reached, the
deck enters the record/pause mode and the
line input and output muting is terminated.
(The Ready indicator is now constantly lit.)
This concludes the auto calibration process.
® The highly precise level and bias data for
each channel are automatically stored in
the memory for each tape position after
auto calibration. These data are retained
until renewed calibration is performed at
that position.
While the deck is switched off, the memory
is backed up by a built-in lithium battery.
(No battery replacement is needed for
about 7 years.) The memory feature is
helpful for example in timer recording,
because calibration can be carried out
beforehand and the data are then used for
the actual recording.
e |! the tape was ejected after auto
calibration or if the power to the deck was
switched off and on again, the azimuth
position reverts to the setting determinated
by the Playback Azimuth control.
Real-Time Tape Counter
The tape counter of this deck works not only
as a 4-digit counter but it also incorporates a
Real-Time display function which shows the
elapsed or remaining tape time. The correct
time indication will be displayed after an
8-second playback (or recording) run, even if
the inserted cassette was not fully rewound to
the beginning. Once the time reading has been
established, the calibration is retained also
when fast-winding the tape.
Use of the Real-Time Tape Counter
(1) Select the position (C-46/C-60/C-90)
corresponding to the inserted cassette with
the Tape Length button.
(2) Choose the desired indication setting.
When the power to the cassette deck is
switched on, the counter operates as
4-digit tape counter. By pressing the
Counter Mode button, the counter indication
mode can be switched consecutively
between elapsed time (“Time” indicator lit)
=> remaining time (“Time Remaining”
indicator lit) > 4-digit tape counter > .....
(3) After the tape has run for 8 seconds in
playback or recording, the time display
comes on.
* When the elapsed-time indication mode
was activated from the very beginning of a
cassette, the time display at first shows a
negative reading between 5—30 seconds
(depending on the cassette), counting up to
“0:00” and then continuing to run with
positive indication.
When the “0:00" point is reached in the
reamining-time mode, this indication is
retained for approx. 5—30 seconds
(depending on the cassette) until the actual
tape end.
~~ ME Error Indication
If an error occurs during auto calibration, the
Azimuth, Level and Bias indicators flash
simultaneously. This can be caused by one of
the following conditions:
e Azimuth, level or bias cannot be adjusted to
optimum settings because an inferior tape
with substandard caracteristics or cassette
housing of low quailty is used.
® Fade-out was performed by pressing the
Rec Mute or one of the Master Fader
buttons during auto calibration.
® The Manual Tape selector was used and
the chosen tape position setting does not
correspond to the inserted cassette.
Note:
® The indication of this deck's real-time tape
counter will be most accurate when using
C-46, C-60 or C-90 tapes.
As the counter does not operate according
to the stopwatch principle, the reading may
run at a slightly different pace than an
actual clock.
When the playback (or recording) mode
was re-entered after fast-forward or
rewind, the second digits may flash for
1—2 seconds. This indicates that the
built-in microprocessor is performing
automatic time display compensation. It
should not be mistaken for a malfunction.
A
To cancel the error condition, press the Reset
button. The tape is then rewound to the
calibration starting point and stops there. The
error condition can also be cancelled by
ejecting the cassette. When wanting to stop
the auto calibration process halfway, press the
Reset button or the Stop button. If an error has
occurred or the auto calibration process was
interrupted, the data gained so far are
cancelled and the data from the previous
calibration remain stored in the memory.
e |f tapes of other than C-46, C-60 or C-90
length or cassettes with special
(non-standard) hub diameters as shown in
the illustration below are used, the time
indication will be incorrect. The 4-digit tape
counter should be used in such cases.
Commercially available music tapes have
varying lengths depending on their playing
time. During playback of such tapes, the
real-time tape counter will also not operate
correctly and the 4-digit tape counter mode
should be used.
Time
Time Remaining
4-Digit Tape Counter Mode
< Standard Hub Size (Example) >
Real-time tape counter can be used.
Large Hub Size
(reel hub radius 15 mm)
Regular Hub Size
(reel hub radius 11 mm)
Elapsed-Time Mode
Remaining-Time Mode
< Special Hub Size (Example) >
Use the 4-digit tape counter.
Intermediate Hub Size
(reel hub radius between 11 and
15 mm)
Auto Fade
When the deck is in the recording mode and
the Auto Fade switch is set to “On”, the
following functions are performed after
reaching the “0:00” point of the remaining tape
time count: automatic fade-out in 4 seconds
=> no-signal recording continues until tape
end = auto shut-off (record mode is
terminated).
e When the Auto Fade switch is set to “On”,
the Auto Fade indicator lights up.
® When the fade-out process starts, the
Master Fader button indication gradually
changes from “ to” ".
After the fade-out is completed, the
indicator of the Rec Mute button lights up.
Note:
® To use the auto fade feature, it is
necessary to first correctly set the tape
length with the Tape Length button. When a
cassette of different length than C-46, C-60
or C-90 is used, the auto fade function may
not operate properly.
Use of the Remote Control Unit
The supplied wireless remote control unit
(RM-7C) permits operation of the tape
transport and playback head azimuth
adjustment from a convenient location. Point
the infrared transmitter window of the remote
control towards the Remote Control Sensor on
the deck when operating a button.
E Controls and Functions
Infrared Transmitter
Window
Indicator (Lights up
when a button is
La
i ——————————————
Firma b | pushed.)
| Stop Button
®
= Ens TT Play Button
| Rewind Button
$ |
== == e Fast-Forward Button
|| Ea i
rÉ Pause Button
®
10 = + Record Button
(Doubles as Rec
Mute button.)
ACT A ail
+
| | Azimuth Adjustment
Buttons (Used for
adjustment of
playback head
= | azimuth.)
[ |
L . Battery Compartment
[ | (Remove the cover
and insert two IEC
L NI RE (size “AA”)
batteries.)
RM-7C Remote Control Unit
10
e When the power to the deck is switched on,
the tape length is automatically set to
“C-60". Therefore a C-60 type cassette
should be chosen if the auto fade function
is to be used in conjunction with timer
recording.
e When using a cassette with special hub
diameter which differs from ordinary tapes,
the auto fade feature will not function
properly. (Refer to the illustration “Special
Hub Size” on page 9.)
Set the Power switch
to “On”.
E Batteries
Remove the battery compartment cover of the
remote control as shown in the illustration and
insert the supplied IEC R6 (size “AA”) batteries,
taking care to observe correct (+) (—) polarity.
When the batteries are nearing exhaustion, the
effective range of the remote control
decreases or the remote control fails to
operate. In such a case, replace both batteries
with fresh ones.
(A good indication that the batteries need
replacing is when the indicator on the remote
control begins to grow dim.)
Note:
® Do not use a mixture of old and new
batteries, and make sure that both batteries
are of the same type.
e Only batteries specially designed and
clearly marked as such are rechargeable.
Carefully read and observe the instructions
printed on the batteries.
Removal of Battery Compartment Cover
e To prevent damage caused by possible
battery leakage, remove the batteries from
the remote control unit if it is not to be used
for an extended period of time.
e Never dismantle batteries or dispose of
them in fire, as they may explode. Dispose
of batteries only in an appropriate way as
indicated by your community.
Bias Fine Tuning (CR-5A)
This deck provides a Bias Tune control which
permits fine adjustment of the recording bias
current for the tape in use.
(1) Adjustment for Optimum Bias Point
When using tapes from the list on page 7, the
Bias Tune control should be left in the center
click-stop position.
When using other tapes, adjust the bias while
comparing the sound of the input signal to the
recorded signal. This comparison can best be
done by recording FM interstation noise or a
similar signal at about — 30 to — 20 dB and
switching the Monitor button back and forth
between “Source” and “Tape”.
1) If the recorded signal sounds brighter than
the original source, turn the Bias Tune
control to the right (+).
2) If the recorded signal sounds duller than
the original source, turn the Bias Tune
control to the left (—).
3) By repeating steps (1) and (2) and
monitoring the results, adjust the Bias Tune
control to minimize any sound quality
differences.
(2) Adjustment for Preferred Sound
Character
The Bias Tune control can also be used to
slightly alter the high-frequency response
characteristics of a tape and thereby adjust
the tonal quality as desired.
By turning the Bias Tune control to the left
(—), the bias current decreases, which will
lead to slightly higher distortion but permits
recording with extended high-frequency
More Convenient Features
E Master Fader
This feature permits smooth and easy fades
during recording without having to move the
Input Level or Master Level controls.
By pressing the Master Fader “ ~~" button,
the recording level is gradually reduced to
zero. After the level was reduced by pressing
“>”, pressing the “ ” button will |
automatically raise it again to the previous
setting.
You can choose between two fading speeds. If
you keep the button depressed, the fading is
comparatively fast. If you release the button
immediately after pressing it, the fading is
slower.
The respective fading mode is indicated by the
brightness of the “ —.. ” and “>.” indicators.
After complete fade-out, the indicator of the
Rec Mute button lights up.
Note:
® The operation of the master fader can be
changed from “ / " to “ ” " or from
> to" 77, but it cannot be stopped
midway.
® The master fader is operative only in the
record and record/pause modes. When
these modes are released, the setting
automatically becomes “ +” ”,
HB Rec Mute
By pressing the Rec Mute button during
recording, the recording signal is cut off for as
long as the button is kept depressed. (The rec
mute function can also be activated with the
remote control of the CR-7A by pressing the
Record button once more while a recording is
in progress.)
When the Monitor button is set to “Source”
( indicator lit), the line output and
headphone output are not muted, so that it is
possible to continuously monitor the input
signal.
E Auto Repeat
With the Memory Stop/Auto Repeat switch set
to “Auto Repeat”, the following operating
sequence is repeated when the tape end is
reached during recording, playback or
fast-forward: automatic rewind to the tape
start © playback from the beginning =>
automatic rewind when tape end is reached
= playback from the beginning...
Repeat playback will also be performed if the
beginning of the tape is reached in rewind.
® When the Timer switch is set to “Rec” or
“Play”, the auto repeat function is
inoperative.
response.
Turning the Bias Tune control to the right (+)
increases the bias current. This curtails
high-frequency response somewhat, but
distortion and noise are reduced.
Note:
® Make sure that the Tape Position indicator
corresponds to the tape in use before
performing the bias adjustment.
E Memory Stop
When the Memory Stop/Auto Repeat switch is
set to “Memory Stop”, the tape automatically
stops at the tape counter reset point during
fast-forward or rewind.
* For CR-7A users: The memory stop
function also operates in the two real-time
tape counter modes at the point where the
Reset button was pushed.
11
Maintenance
Cleaning
It is very important to regularly clean the head
surfaces and transport section, etc.
Contamination caused by tiny particles
shedded from the tape onto these parts can
become the cause of drop-outs and severely
degrade high-frequency response and wow-
and-flutter characteristics. Perform cleaning
about once every 10 hours of use.
(1) Remove the cassette holder cover and push
the cassette holder back in.
Be careful that the cotton tip does not get
caught between the roller and the capstan.
(3) Press the Pause button to release the
pressure rollers from the capstans. Now
clean the capstans and surfaces of the
heads and tape guides with a cotton-tipped
stick. Be careful not to apply too much
force. Take special care not to damage the
tape guides and the tape pad lifter.
e After cleaning, make sure that no cotton
strands are left on any of the cleaned parts.
e In case of serve contamination, moisten the
cotton tip with a small amount of
commercially available cleaning fluid
designed especially for this purpose.
After cleaning with a cleaning fluid, wait
until any residue has completely dried off
before playing a tape.
(2) Press the Play button and clean the
Capstan Tape-Pad Lifter
Piz \
paa
> Ad [МР 5
Preloading Guide
Pressure Roller Record Head Capstan
Demagnetization
After a longer period of use, there can be
build-up of residual magnetism in the heads
and capstans. Such residual magnetism can
induce noise and partially erase the high
frequencies of a tape being played. To prevent
this, you should demagnetize these parts about
once every 50 hours of use with the Nakamichi
DM-10 demagnetizer (optional) or any other
properly designed demagnetizer. For details,
refer to the instruction manual of the
demagnetizer.
Lubrication
All important moving parts of this cassette
deck are fitted with long-life, oil-less bearings.
Periodic lubrication is therefore not necessary.
Caring for the Exterior Panels
Clean the unit only by wiping it with the
supplied polishing cloth. Avoid using solvents
or alcohol-based cleaners.
revolving pressure rollers by holding a
cotton-tipped stick lightly against the roller
on the side turning away from the capstan.
Specifications
<< Main Unit >>
Track Configuration.......... 4 tracks/2-channel stereo
Heads............._._eeeeeeoeo. 3 (erase head x 1, record head * 1,
playback head x 1)
MOtOrS iwc < Tape Transport>
FG servo brushless, slotless, coreless DD
motor (capstan drive) = 1
DC motor (reel drive) x 1
< Mechanism >
DC motor (cam drive) = 1
DC motor (playback head azimuth
control) x 1 (CR-7A only)
Power Source. ............... 100, 120, 120/220-240, 220 or 240 V AC,
50/60 Hz (According to country of sale)
Power Consumption.......... CR-7A: 55 W max.
CR-5A: 45 W max.
TADO: SDepd: == ao 1-7/8 ips. (4.8 cm/sec.) + 0.5%
Wow-and-Flutter............. Less than +0.048% WTD Peak
Less than 0.027% WTD RMS
Frequency Response. ....... . CR-7A: 20 Hz—20,000 Hz +2 dB
18 Hz—21,000 Hz +3 dB
CR-5A: 20 Hz—20,000 Hz +3 de
(recording level — 20 dB, ZX, SX, EXII tape)
Signal-to-Noise Ratio ........ Dolby C-Type NR on <70 us, ZX tape >
Better than 72 dB (400 Hz, 3% THD, IHF
A-WTD RMS)
Dolby B-Type NR on <70 us, ZX tape >
Better than 66 dB (400 Hz, 3% THD, IHF
A-WTD RMS)
Less than 0.8% (400 Hz, O dB, ZX tape)
Less than 1.0% (400 Hz, O dB, SX, EXII
tape)
Total Hermonic Distortion ....
12
5:11 - O sans Better than 60 dB (100 Hz, +10 dB)
Separatior eens e... Better than 37 dB (1 kHz, 0 dB)
Crosstalk lcs == Better than 60 dB (1 kHz, O dB)
Bias Frequency ............. . 105 kHz
Input ALINE): 15.000 rat 50 mV/40k ohms
Qutput ([email protected])................. 1.0 V (400 Hz, 0 dB, output level control at
max.) 2.2k ohms
(Headphones) ....... 12 mW into 8 ohms (400 Hz, 0 dB, output
level control at max.)
Fast-Wind Time.............. Approx. 80 seconds (with C-60 cassette)
DIMENSIONS = +057 sr des Ta 435 (W) x 135 (H) x 306 (D) mm
17-1/8 (W) x 5-5/16 (H) x 12 (D) inches
Approximate Weight......... .CR-7A: 9.0 kg, 19 Ibs. 13 oz
CR-5A: 8.5 kg, 16 Ibs. 12 oz
<<Remote Control Unit RM-7C >> (supplied with CR-7A)
System... ere... Infrared pulse system
Power Supply ................ DC 3 V (1.5 Vx 2)
Dimensions .................. 57 (W) x 19 (H) x 175 (D) mm
2-1/4 (W) x 3/4 (H) x 6-7/8 (D) inches
Approximate Weight.......... 140 0, 5 02
e Specifications and design are subject to change for further improvement
without notice.
e Noise Reduction System manufactured under license from Dolby Laboratories
Licensing Corporation.
e The word “DOLBY” and the Double-D-Symbol are trademarks of Dolby
Laboratories Licensing Corporation.
Troubleshooting
Condition
Probable Cause
Remedy
Tape does not run.
1. Cassette holder is not firmly closed.
i. Press Eject button and then close cassette holder
firmly.
Record mode cannot be entered.
2. Cassette tabs have been removed.
2. Place adhesive tape over tab opening or use new
cassette,
Excessive playback hiss.
3. Heads are magnetized.
3. Demagnetize heads.
Uneven sound levels, drop-outs,
excessive wow flutter.
4. Heads /capstans/pressure rollers are dirty.
5. Faulty cassette.
4. Clean these parts.
5. Replace cassette.
Incomplete erasure.
E. Erase head is dirty.
6. Clean heads and pressure rollers.
Distorted record/playback sound.
7. Program material itself is distorted.
8. Recording levels are too high,
9. Heads are dirty.
10. Manual Tape selector is not set correctly.
11. Cassette without detection slots is used.
7. Check program material.
8. Wide dynamic range permits some short-term
overload, but excessive recording levels will cause
distortion.
9. Clean heads.
10. Select correct position for tape in use.
11. Select correct position with Manual Tape selector.
Record mode is entered, but cannot record.
12. Input is disconnected.
13. Heads are dirty.
12. Check connections.
13. Clean heads.
Cannot playback.
14. Output is disconnected.
15. Heads are dirty.
14. Check connections.
15. Clean heads.
Dull high frequencies.
16. Heads are dirty.
17. Dolby NR not set correctly.
18. Manual Tape/Eq selector is not set correctly.
19. Cassette without detection slots is used.
20. Playback head azimuth is not set correctly (CR-7A).
16. Clean heads.
17. Select same position as used for recording.
18. Select correct position for tape in use.
19. Select correct position with Manual Tape selector.
20. Perform playback head azimuth adjustment.
Hum heard during recording or playback.
21. Strong induction fields near deck.
22. Signal cable or connector grounding faulty.
21. Keep deck away from amplifiers, transformers,
fluorescent lamps, etc.
22. Replace signal cables.
Remote control does not operate (CR-TA).
23. Power switch of cassette deck is set to “Off”,
24. Batteries are inserted with wrong polarity.
25, Batteries are exhausted.
26. Remote control unit is outside of effective range.
27. An obstacle is placed between remote control and
cassette deck.
28. Another wireless remote control is operated at the
same time,
23. Set Power switch to “On”.
24. Insert batteries correctly.
25. Replace both batteries with fresh ones.
26. Operate unit within effective range.
27. Remove obstacle.
28. Avoid simultaneous use of several remote control
devices,
Optional Accessories
ZX Metalloy Cassette Tape
C-60, C-90
SX Il Super Ferricobalt Cassette Tape
C-60, C-90
SX Ferricobalt Cassette Tape
C-60, C-90
EX || Ferricrystal Cassette Tape
C-60, C-90
DM-10 Head Demagnetizer
RM-5 Remote Control Unit
SP-7 Stereo Headphones
13
Nakamichi Corporation, Tokyo Office Shinjuku Daiichi Seimei Bldg., 2-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 163 Phone: (03) 342-4461 Telex: 2324721 (NAKAM J)
Nakamichi America Corporation 19701 South Vermont Ave., Torrance, CA 90502 Phone: (213) 538-8150
Nakamichi Canada 276 South West, Marine Drive, Vancouver, B.C. V5X 2R4 Phone: (604) 324-7535
Nakamichi GmbH Stephanienstrasse 6, 4000 Diisseldorf 1 Phone: (0211) 359036
00045630 0-6906035 Printed in Japan
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