Yamaha K-1020 Owner's manual

Yamaha K-1020 Owner's manual
SETTING THE RECORDING LEVEL.
FADE-IN, FADE-OUT RECORDING...
PLAYBACK oie
TIMER RECORDING AND TIMER PLAYBACK
MAINTENANCE...
CASSETTE TAPES rec
TROUBLESHOOTING ..
BLOCK DIAGRAM .......
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WARNING
‘Retain this Owner's Manual in à safe place for future reference:
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
RISK OF ELECTRIC SHOCK
DO NOT OPEN |
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHCCK, DO NOT REMOVE COVER (OR RACK). NO
USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
e Explanation of Graphic Symbols
The lightning flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert you to 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
equilateral triangle is intended to alert
- you to the presence of important
operating and maintenance (servicing)
instructions in the iiterature
accompanying the appliance.
SAFETY
“ 1 | Read Instructions—All the safety and operating instructions
should be read before the appliance is operatad.
= Retain Instructions—The safety and operating instructions
should be retained for future reference.
= Heed Warnings—All warnings on the appliance and in the
operating instructions should be adhered to. -
4 Follow. Instructions —All operating and other instructions
should be followed.
- 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 swimming pool, etc.
5 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.
4 1
= 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.
= Heat—The appliance should be situated away from heat
sources such as radiators, stoves, or other appliances that
produce heat.
1 O) 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.
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.
1 = Cleaning—The appliance should be cleaned only as
recommended by the manufacturer.
1 3 Nonuse Period—The power cord of the appliance
should be unplugged from the outlet when left unused for a long
period of time.
1 Zl Object and Liquid Entry—Care should be taken so
that objects do not fall into and liquids not spilled into the inside
of the appliance.
1 _ 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
В. Objects have fallen, or liquid has been spilled into the
appliance; or
C. The appliance has been exposed to rain; or
О. The appliance does not appear to operate normally or exhibits
a marked change in performance; or
E. The appliancz has been dropped, or the cabinet damaged.
7 © Servicing— The user should not attempt to service the
appliance beyond those means described in the operating instruc-
tions. All other servicing should be referred to qualified service.
personnel.
7
The K-1020 is a sophisticated stereo cassette tape deck. To ensure
proper operation for the best possible performance, please read this
manual carefully. |
2
Choose the installation location of your K-1020.
Avoid placing it in direct sunlight or close to a source of heat. Also
avoid locations subject to vibration and excessive dust, heat, cold or
moisture. Keep it away from such sources of hum as transformers
or motors, |
3
Do not open the cabinet as this might result in damage to the
set or electrical shock. If a foreign object should get into the set,
contact your dealer.
4
When removing the power plug from the wall outlet, always pull
directly on the plug; never yank the cord.
5
Do not use force when using the switches and knobs.
6
if the K-1020 gets wet (from spilled liquids, rain, etc.) immediately
pull out the plug; contact your dealer.
/
Do net attempt to clean the K-1020 with chemical solvents as this
might damage the finish.
Use a clean, dry cloth.
8
The recording/playback head used in this cassette tape deck is a
Pure Sendust alloy head, with inherently high signal-to-noise ratio
and excellent recording distortion characteristics, out it can become
dirty through the use of old tapes or from dust, This can have a
disastrous effect on quality: clean the heads regularly with one of
the commonly available cleaning tapes or other cleaning device.
9
The K-1020 is compatible with metal tapes. Use either Normal (LH),
CrO; (Chrome), or Metal tapes. |
After putting a cassette back into its case, store in a location away
from exposure to direct sunlight, humidity, high temperatures, and
magnetic fields (away from television sets, speakers, etc). High
temperatures and humidity will damage the tape itself, while ex-
posure to magnetic fields may cuase a loss of recorded material. -
11
Be sure to read the “troubleshooting” section for advice on com-
mon operating errars before concluding that your K-1020 is faulty.
12
Keep this manual in a safe place for future reference.
MATURAL
OUTEUT LEVEL
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PHONES
@ EJECT Button (EJECT)
When this button is pressed, the cassette holder opens. Use when
loading and unloading cassette tapes.
@ POWER Switch (POWER)
This is push-on, push-off type power switch,
O) Cassette Holder
Holds the cassette tape.
©) MASTER FADER Control
This knob adjusts the range of the recording level set by the
PRESET REC LEVEL CONTROLS. Normally it should be set to
the “0” position.
* The MASTER FADER control will function only during the
RECORD mode.
@ RESET Button
Push the RESET button to reset the counter reading to “0.00”.
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(9 MEMORY Button
Push the MEMORY button when the counter is at the desired
counter reading. Push the button again to release the memory
function.
When the Memory position is set, the tape will automatically stop at
that position during we; ew or se ees modes.
@ MONITOR Button
This button switches the MONITOR function between the source
and the tape. This machine is equipped with an auto monitor func-
tion, out it can be changed to manual if so desired; for example,
monitoring the just-recorded signal during tape recording.
ED MULTI FUNCTION DISPLAY
Please see page 5.
E) OUTPUT LEVEL Volume
Regulales level to the headphon jack, and line out to the amplifier.
1) Headphones Jack
When using headphones, insert the headphones plug into this Jack.
U) OPERATION Buttons
PLAY: Press the button to start tape playback.
dey fg BoB The deck will REWIND( e: -2=) or FAST
FORWARD ree} the tape. Continuing to hold down
either the wee’ wa or the we /».> button will increase the RE-
WIND or the FAST FORWARD speed, respectively. When
these are pressed simultaneously with the MUTE/SEARCH
button, it will be possible to search for the beginning of the
present or the next selection.
REC/PAUSE: Pushing this button will activate the RECORDING
STANDBY mode. Pushed during recording it will activate the
REC/PAUSE made.
STOP: Pushing this button will stop tape travel. Pushing this button
during the RECORD made will stop the recording.
MUTE/SEARCH: During Recording: When the MUTE/SEARCH
button is pressed at any time during recording, a 4-second
blank interval is automatically recorded on the tape. Then,
the Rec Pause mode is engaged automatically. (Auto Rec
Mute Operation) | |
In order to record a blank interval longer than 4 seconds,
press the MUTE/SEARCH button and hold it in for the
desired length of time. After the button is released, the 4 se-
cond blank interval will also be recorded automatically, after
which the Rec Pause mode is engaged automatically. To
create a blank interval on the tape during continuous recor-
ding, press the Play button during rec mute operation. Dur-
ing Playback By pushing either the «te: <a Or pe mow
button simultaneously with this button, the tape will be
advanced to the beginning of the song either before or after
the one being listened to, from which point play will be
resumed. |
E Tape travel!
MUTE/
SEARCH] Push
Rec/Pause
‚+ $ес. y, ч
\ | = | Blank space | Recorded Se ction —
| Continue Tape travel
IP to press
Rec/Pause
— MUTE?
| 4s SEARCH
CU sec. > N
[ - Recording Continue | BRK | Recorded Section —)—em
Tape travel
Push "PLAY"
à \ MUTE/ ;
SEARCH | Push
button
( Noise Reduction Button (NOISE REDUCTION)
NR OFF |
For recording and playback without using the DOLBY NR or dbx
systems, press this button. In the NR OFF position, signals do not
pass through the noise reduction circuits and are output directly by
the shortest route.
DOLBY B, C NR
Dolby noise reduction is an extremely effective method of reducing
background hiss on tapes. The K-1020 incorporates both Dolby B
NR and the newer Dolby C NR system. Dolby C NR is approxi-
mately twice as effective as Dolby B NR.
Tapes recorded with Dolby B NR should be played back with .
Dolby B NR on, and tapes recorded with Dolby C NR should be
played back with Dolby C NR on.
* Dolby and the double D mark are trademarks of Dolby Labo-
ratories Licensing Corp. Dolby noise reduction system manufac-
tured under license from Dolby Laboratories Licensing Corp.
dbx NR
When recording with dbx NR, input signals with. a large dynamic
range are compressed to 1/2, and expanded by a factor of 2 to
their original state when played back. This means that a large
dynamic range can be obtained even from cassette tapes with
small dynamic range recordings, and noise can alse be reduced
at the same time. If metal tapes are used for recording and play-
back, a dynamic range which would have been thought impossible
with cassette tapes can be obtained. For recording and playback
with the dbx system, press this button.
For playing back tapes which are not dbx recorded, set to the NR
OFF position.
**“dbx” is a trademark of dbx Incorporated.
(® AUTO MODE Selector
This computer command function is for using the timer or locating
the beginning of a selection with counter memory.
OFF
For normal playback or recording, set to this position.
REPEAT FULL
Either side of a tape (A or B according to the side loaded) is
played 8 times from beginning to end.
REPEAT O-M
Playback is repeated 8 times between “0.00” on the counter and
the counter number memorized with the memory button.
When no MEMORY position is set, the tape will stop at the "0.00"
counter position during rewind. -
TIMER PLAY
Can be used for timer playback, etc., with an external audio timer.
TIMER REC
Used for making timed, preset recordings with an external audio
timer.
{© Preset Recording Level Controls
Adjusts the input level of the recording signal. Independant left/right
controls also permit balance level setting.
® MPX FILTER Switch
Press this switch when recording from an FM station while using
. the Doloy-NR system. The 19 kHz pilot signal May leak into the
audio output, depending on the tuner and the broadcast condi-
tion. Since the 19 kHz pilot signal may cause improper operation |
of the Dolby NR system, this switch should be turned on when
recording from an FM station, thus filtering out the 19 kHz pilot
signal. This switch should be turned off when recording from other
program sources.
(1) BIAS Adjustment Control
This function is, provided to adjust the recording bias to its optimum
value according to the type of tape used.
Choose the optimum bias by watching the bias tuning display
indicator.
® Refer to page 9, "Bias Adjustment”.
O TEST SWITCH |
This switch will cause the ORBIT function to operate, and it is used
during the adjustment of the bias. Normally this switch should be
turned off.
COUNTER
The elapsed PLAY time of the tape is shown.
N— MEMORY
display to go out.
-— 0-M REPEAT
FULL REPEAT
“MEMORY” will light up when a memory setting is made.
Cancelling the memory setting will cause the “MEMORY”
Turning on 0-M Repeat will cause the corresponding display to light
up. Cancelling O-M Repeat will cause it to go out.
Turning on Full Repeat will cause the corresponding display to light
up. Cancelling Full Repeat will cause it to go out.
PEAK METER
modes. it will also display the optimum recording level monitor,
Refer to the “Recording” section on page 10.
LEFT oo
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used.
BIAS
-— MONITOR Indicator
This will indicate either the TAPE or SOURCE
MONITOR position.
TEST indicator
This indicator will light up during the ORBIT operation (bias
adjustment). It will flicker during the STANDBY mode,
REC Indicator
This indicator will light up during the RECORD and REC/PAUSE
modes. It will flicker during the AUTO REC MUTE mode.
FILTER Indicator
This indicator will light up when the MPX FILTER SWITCH is on.
The PEAK LEVEL will be displayed during the RECORD or PLAY
NOISE REDUCTION Indicator
This indicator shows what type of noise reduction system is being
Indicates direction of tuning for optimum bias setting.
TAPE Indicator
This indicator will automatically display the type of tape being used
when a cassette is loaded into the unit (auto tape selector).
Refer to the section "CASSETTE TAPES on page 14.
Precision of Counter
The tape counter is not a clock, and so there will be some errors in
the time display compared to the actual recording time (this cannot
be avoided, as a suitable method is adopted to provide a time
display not only during recording and playback, but also during fast
forward and rewind). The error depends on the type of tape being
used,
The table below shows the range of error in the counter display
compared to actual tape travel time, for Yamaha tapes run from
beginning to end. It may be taken as a reference when using the
counter.
Range of error in display compared to travel time of
one side of tape
(for Yamaha cassette tapes)
CHR-90/MR-90
«— — >
NR-60/CR-X60/MR-60
NR-90/NR-X90
frac EE
1 | 1 T 1 1 T
—3 —2 —1 0 +1 +2 +3
Time displayed is (Unit: min.) Time displayed, is
too short loo long.
SI
Insert plugs firmly, taking care not to mix up L and R. Be sure to connect the left (L) and right (R) channels consistently. 98 HOW TO LOAD AND UNLOAD CASSETTES
- 1. Open the cassette compartment cover by pressing the Eject
LINE QUT/PLAY (Playback output) : button.
LINE IN/REC (Rec input) Remote Control Terminal 2. The side of the tape you wish to record or playback should be
facing the front. insert the cassette with the exposed tape edge
down, and fit it into the chamber.
Push the cassette cover closed until you hear an audible click.
| | | | | | | | | | 4. To unload the cassette, press the Eject button.
Remember to keep the cassette compartment cover closed
when not using the deck to protect the heads and inner
assembly from exposure to dust and other foreign elements.
The exposed edge of the tape should be facing down when
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7 i recording.
3 g
REC OUT (Rec output)
TAPE PB {Playback pu | || >
TAPE | Connect to an AC
TAPE PB REC QUT power outlet.
Or to unswitched ‘ 8
AC OUTLET of amplifier,
Integrated amplifier,
preamplifier or receiver.
The K-1020 is equipped with a
connector terminal for remote control.
Therefore, remote operation is possible
by using the optional remote control
& Automatic Tape Slack Tensioning Mechanism
When a tape is loaded while the power is on,
Make sure that the plugs are
inserted firmly. Hf insertion
O noise or hum | Remote control unit RS-20 unit (RS-20). tape slack tensioning operation will begin as soon as
the tape is loaded. This is a special feature that in-
Accessories | sures that the dual capstan tape drive mechanism
operates to its full potential. This automatic tensioning
mechanism will also operate when the power is turned
on after a tape has been loaded. However, if the tape
has excessive slack, the tape slack tensioning
mechanism may not be sufficient to take up all of the
slack. Therefore, before loading a tape. be sure to
take up as much of the tape slack as possible, by
turning a pencil inside the cassette spool.
EIA rack mount adaptors are available
for the K-1020, sold separately.
To improve the distortion characteristics during recording, it is im-
portant that, along with the recording tape head, a bias current
precisely. adjusted to the type of tape being used be supplied to
the recording tape head. However, an excessively high bias current
will cause the high frequency signal components to deteriorate, with
a resultant rolling off of the high frequencies.
“ The HX-Professional system incorporates a DC-controlled bias servo
amplifier between the recording tape head and the bias oscillator,
which automatically controls the bias amount independently for the
left and right channels, according to the level and the frequency
components of the signal input. Thus, this system assures optimum
recording of the entire audio frequency spectrum under all record-
ing conditions. The deterioration of the high frequency signal com-
ponents has been drastically improved, resulting in dynamic and
clear recording with sufficient headroom, even at 0 dB. Unlike other
noise reduction systems, the HX Professional system operates
automatically, but only during recording. Thus, a tape recorded on
a deck equipped with the HX Professional system can be played
back on any conventional tape deck, and still retain the dynamic
and clear sound that results from. using the HX Professional system.
e Dolby noise reduction and headroom extension manufactured
under license from Dolby Laboratories Licensing Corporation.
HX professional originated by Bang and Olufsen.
| REC Amp
—O Input Signal
DC Control Bias Servo Amp
REC Head |
~2
Bias OSC
Controller
Integration
Circuit
Tape Selector
BIAS ADJ
With cassette tapes, the most noticeable form of noise is high-
frequency hiss. To reduce this hiss noise, the K-1020 has been
equipped with a newly developed Dolby C noise reduction system
in addition to its conventional Dolby B NR. Either type of noise
reduction may be selected with the switch provided.
Dolby B NR has a noise-reduction effect of about 10 dB in the
high-frequency range. The corresponding figure with Dolby C NR
is about 20 dB, but this is over the entire range where the human
ear is most sensitive to noise (2 kHz to 8 kHz). Dolby C NR also
improves the tape's MOL (maximum output level),
Dolby C NR has two new circuits: a spectral skewing circuit and an
anti-saturation network. By improving the saturation level of the tape
it is possible to prevent high-frequency loss and encode/decode er-
ror, etc., improve dynamic range and signal-to-noise ratio, and make
it easter to set the recording level. With Dolby C NR, it is possible
to achieve the same noise reduction effect at both high and low
+10
signal levels and to set the recording level at a point where side
effects such as “breathing” are eliminated. Also, by expanding the
operating frequency range to two octaves more than that of Dolby
5 NR, overall noise balance is obtained and the system also
becomes effective against high frequencies from the power supply,
The graph shows the frequency response and the noise-reduction
effect of recording and playback with Dolby B NR and Dolby © NR.
The noise reduction effect of Dolby C NR is larger—approximately
20 dB.
Dolby noise reduction is a 2-part process that acts both on record-
ing and playback; be sure that the Dolby NR switch is set to the
same position on record and play. |
o Noise in the source material can not be reduced with the Dolby
NR system. | о
—20 |
—40 |
Level (dB)
—60 |
.—80 E
20 100 500
2K SE 10K 20K
Frequency (Hz)
The K-1020 incorporates a dbx system which greatly expands the The dbx system works by compressing the dynamic range of the
dynamic range of cassette tapes. If the softest sound that the record signal by half and then doubling the dynamic range of the This tape recorder uses a full-scale three-head configuration, with
human ear can hear is “1”, then the loudest is “1 million”, ar : playback signal. (see diagram). With the dbx system functioning, a independent recording, playback and erase tape heads, as well
120 dB. This is the dynamic range of the human ear. The dynamic program source compressed to 50—60 dB at recording will be as independent recording and playback amplifiers. Since a major
range of cassette tape, however, is only about 55 dB. Even metal expanded to a dynamic range of 100—120 dB. At the same time, characteristic of a three-head tape deck system is simultaneous tape
tapes only offer an improvement of 3 dB in the midrange and 8 dB noise levels will be reduced throughout the entire frequency range, recording and tape playback, tapes can be monitored directly as
in the high frequencies. | and the effective saturation level of the tape will be increased. they are made.
* Tapes not recorded with the dbx system should be played back The AUTO MONITOR function automatically switches to SOURCE
with the dox system off. a MONITOR during the REC/STANDBY and RECORD modes, and to
| TAPE MONITOR during the PLAY mode. The AUTO MONITOR
*The priciple of dbx system ENCODE : DECODE function can also be manually switched by using the MONITOR
button if required.
Recording head Playback head
\
+20 p
Erase head
+0
| -20 1° REC. AMP PB AMP.
Input dynamic Output dynamic
range 100dB 9 range 100dB |
-40 |
-60.
| TAPE
—80 *
*Characteristics of dbx Encode/Decode +20 SOURCE — O Output
| © +0} input O——e O
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(1) ENCODE 5 740 |
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INPUT LEVEL (dB)
The ORBIT system, with its microcomputer makes the trouble-some
task of bias adjustment easier and clearer, so that tape performance
can be fully exploited.
The optimum bias level can be set very easily; further adjustment is
made to the bias level selected by the auto tape selector, watching
the Bias tuning display and adjusting the Bias fine adjustment
control.
a When the TEST button is ON, recording and playback cannot
take place. —
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Auto stop /
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Auto Rewind
How to Adjust
1 Load cassette tape to be recorded.
2 Press ORBIT TEST button to the ON position.
3 Press the REC/PAUSE button and the PLAY button. The deck
then enters the recording mode.
4 Watching the tuning display, adjust the Bias
frequency response.
e Refer to bias—frequency response curve.
The frequency response is flat when the tuning display is as
shown.
Response (dB)
Respose (dB)
Response (dB)
*B
+10
ias vs. Frequency Response
Recording Frequency Response
o
Ha
20
30
oO
IOHz 20 50 100 200 500 1000 2000 5000 ЮОСО 20000 40000
. Frequency (Hz)
30
IOHz 20 50 100 200 S00 1000 2000 5000 10000 20000 40000
Frequency (Hz)
Юн: 20 50
KO 200 500 1000 2000 5000 10000 20000 40000
Frequency (Hz)
control to give a flat
Tuning Display
5 After completing bias adjustment, switch ORBIT TEST button to -
OFF. |
The tape is rewound at the same time. As the counter has
memorized the point at which bias adjustment began, it returns to
that point.
6 The bias is now set to its optimum value.
* If the heads are dirty or the tape is unsatisfactory, etc., it may not
be possible to carry out bias adjustment.
* When the TEST button is ON, ordinary recording and playback
cannot be carried out.
Bias Control
| BIAS
Optimum Bias
Fat frequency response
Sound quality normal
[BIAS >] |
Excessive Bias
(Over Bias)
High frequency response
drop-off.
| BIAS
Insufficcient Bias
(Under Bias)
High frequency response
rising.
—20% +20%
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E How to Record
* Before recorcling |
Refer to Connection Diagram. Check that leads and power cord are
correctly wired.
© Set AUTO MODE selector to OFF.
@ Set POWER switch to ON.
@ Press EJECT button, open the cassette holder and load a
cassette tape.
When recording from the beginning of a tape, allow the tape to
run short distance (about 10 seconds on the counter) until the
leader tape has passed through.
Set the optimum bias for the tape according to “Bias
Adjustment”.
® Set the recording made.
Switch on the MPX filter switch when recording FM stations
wnile using Dolby NR.
6) Press REC/PAUSE button. The deck enters the recording
standby mode.
Set the master fader knob to the “0” position.
Adjust the recording level to optimum point using level meters
and Rec Level controls.
Press the RESET button to reset the counter.
This is a reference for recording time and remaining tape time.
It is also useful for locating recordings after they have been
made.
* Beginning recording
qo
D
Press the PLAY button. The deck enters the recording mode.
if it is desired to interrupt recording temporarily, press the
REC/PAUSE button. The deck enters the record standby mode.
When it is desired to start recording again, press the PLAY
button.
After the recording has been completed, press the STOP
putton.
se |f the MUTE/SEARCH button is pressed during recording, an
unrecorded passage can be put on the tape for as long as the
button is pressed.
Lights up Flashes
- [REC] =
—————— Non-recorded portion
I .
————# Tape travel
— 4 sec. —— Continue
to press
Rec/Pause
MUTE/
SEARCH | |
* When the tape has been wound completely, the auto shut
off mechanism functions and the deck comes to a stop
automatically.
o REC Return Mechanism
If the REWIND button is pushed during recording (playback), it
stops automatically at the point where recording was last begun.
e REC Return mechanism works only after 4 seconds recording.
® If the tape counter is reset ta the “0.00” position during recor-
ding, pressing the Rewind button for Rec Return will stop the
tape at the “0.00” position, not at the point where recording
began.
Recording start point
A
During recording
LI TEST TS A SES SAISIE AT TE SELS I ITS TEST ITS
A
Rewind
10
Setting the level recording is an important point for proper record- change position according to the type of tape being used and the
ing. The PEAK METER of this cassette tape deck is equipped with noise reduction system selected. Consequently, setting the optimum
an optimum recording level monitor function, simplifying the process recording level is an accurate and simple operation, enabling the
of setting the level. The optimum level indicator will automatically fui dynamic range of the tape to be exploited.
e When using the NR OFF or DOLBY NR B, and с © position,
Dot indicator
and normal or chrome tape.
The optimum recording level will be displayed
LEFT CC [THI]
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Set the REC LEVEL so that momentary signal peaks reach the +6 dB level,
* When using the NR OFF or DOLBY NR B, and C positions,
and metal tape.
LEFT [HTH EET CTE TED
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Set the REC LEVEL so that momentary signal peaks reach the +8 dB level.
* When using dbx, and normal, crome or metal tape.
LEFT A |
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Set the REC LEVEL so that momentary signal peaks reach the +16 dB level.
11
FADE IN will cause the recording level to gradually increase to
the pre-set level, and FADE OUT will cause the recording level to
gradually decrease from the pre-set level. Both functions can be
controlled as desired. Using these functions to commence recording
during a selection or for the gradual fading out of a selection will
lend a distinctly professional touch to your recordings.
» Fade-in recording
Set the MASTER FADER knob to — co. After the recording starts,
gradually raise the control setting to the & position.
* fade-out recording |
Gradually lower the MASTER FADER control setting to the — œ
position, and then stop the recording.
Recording level set
Gradually raise Gradually lower
NOTE: The fade-in and fade-out features will not function during the
PLAY mode. These functions will operate only during the
RECORD mode.
@
YAMAHA NATURAL SOUND STERED CASSETTE DECK K-4020
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STOR MUTE/SEARCH
RAEC/PaUSE
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AL РЕ оне: САИ. TRAS ALK IST
® ©
E HOW TO PLAYBACK
* Before playback
Refer to connection diagram. Check that leads and power cords
between units are correctly wired.
© Set AUTO MODE selector to OFF.
(2) Set POWER switch to ON.
® Press EJECT button, open the cassette holder and load a pre-
recorded cassette tape.
(4) For a tape recorded with a noise reduction system, press either
the Dolby B, Colby B or dbx NR button according to the system
used.
* Beginning playback
© Press the PLAY button. The deck enters the playback mode.
(6) Adjust the OUTPUT LEVEL control.
Set the volume and tone controls on the amplifier to adjust
sound quality as desired.
(D) To stop playback, press the STOP button.
Repeated playback of a selection
Using the AUTO MODE and MEMORY, the deck can play one or
more selections repeatedly up to 8 times.
Auto stop at the
memory position
RESET MEMORY
ГОРН ее ее
da. Ia Г -Й
Playback
Auto stop
Auto play
Rewind
«o
“Repeat playback (8 times)
устает
-—
JE
. Load a pre-recorded tape, and begin playback.
. Set AUTO MODE selector to REPEAT 0-M position.
. Press RESET button at the beginning af the selection you want
to play again, and set the counter to 0.00”,
Press the MEMORY button at the end of the selection you want
to play again.
The MEMORY indicator lights up and the tape immediately
begins rewinding.
om
>
5. The tape is rewound until the counter has returned to “0.00”
(beginning of selection). The deck then enters the playback
mode.
6. The tape plays back until it reaches the memorized counter
number (end of selection). In this way, the same selection can
be played again.
To erase the memory, press the MEMORY button once again.
The Memory indicator goes out.
1
When the memory position is at a — (minus) reading, commence
playback from the memory position. The tape will automatically
stop when “0.00” 1s reached, whereupon the tape will be
rewound, and playback will be repeated between the above
two points.
Auto play
Auto stop
Rewind
— <a
se Repeated playback of one side of a tape
1. Set the AUTO MODE switch to the REPEAT FULL position.
2. Load a tape, and the deck for playback. One side of a tape is
played back up to 8 times. a N
12
13
Timer recording and timer playback is possible using an audio
timer. ;
* Timer recording
(1) Connect the power cords between all units as shown in
the wiring plan below.
(2) Switch on power to all units, and set the FUNCTION switch on
the amplifier to TUNER. Choose a station. After selecting a station, it
does not matter if the amplifier volume control is altered (it has no
effect on recording level).
(3) Adjust the deck as described in “Before Recording”,
(4) Set AUTO MODE selector to TIMER REC position.
(5) Set timer to time desired.
* Allow some leeway between the timer setting and the time of
the broadcast.
(6) When the time reaches the setting, power is supplied to all units
and recording begins.
* Timer playback
(1) Connect the power cords between all units as shown in the
wiring plan below.
(2) Adjust the deck as described in “Before Playback”.
(3) Set the amplifier FUNCTION switch to TAPE.
(4) Adjust volume with the amplifier volume control.
(5) Set AUTO MODE selector to TIMER PLAY position.
(6) Set timer to time desired.
(7) When the time reaches the setting, power is supplied to ail units
and playback begins.
*Connections for timer recording and playback
ETA rotar,
A Set recording level to |
à a suitable value
Plug the K-1020 and
tuner into the amplifier
AC outlet
Switch power swit-
ches on all units on
q
No change in
connections д».
Plug the amplifier into}
the timer AC outlet |
TUNER
After using your K-1020 for a certain length of time, it is possi-
ble that the sound of your tapes may deteriorate with fading,
or noise as a noticeable result. This is caused by an accumula-
tion of dirt or dust on the heads, capstan, or pinch roller, and
magnetization of the heads. It is advisable to periodically clean
and demagnetize the heads and to clean the capstan and
pinch roller. Use a commonly available cotton swab and head
cleaning solution to do this, or use a special head cleaning
tape. Head demagnetizers are also commonly available.
a When cleaning the heads, be careful not to apply unneces-
sary pressure. When demagnetizing the heads, be sure to
follow the instructions of the head demagnetizer carefully.
s For better access to the head assembly, the cassette com-
partment. cover is detachable by pulling upward on it after it
has been opened. To re-attach it, reverse the procedure.
Tape guide
Erase head Recording head
Capstan
Playback head Capstan
en ! |
Pinch roller Pinch roller
o Classification of Cassette Tapes by Formulation
Cassette tapes are available in four basic types depending on their
formulation, or type of magnetic material and manufacturing process.
These four types are commonly known as Normal (LH), Chrome
(CrOy), Ferrichrame (FeCr), and Metal (Metal), and they each require
specific bias, level, and equalization settings for optimum perform-
ance. Most cassette decks provide a tape type selector which gives
you the proper bias, level, and equalization settings according to
which type you have selected. The K-1020, however, does not have
such a tape selector. Instead, it has an Auto Tape Selector which
automatically adjusts for the proper bias, level and equalization
according to the tape formulation—all you have to do is load a
cassette and the: Auto Tape Selector does the rest.
Accidental erasure protection tab
Normal (LH) tape
==
JS
/ Detection hole
for chrome
tape
J
Metal (METAL) tape DE
iE
= E >
fr Detection hole
7 < © Eo À for metal tape
* Old-type Metal tape cassette shells do not have the necessary
hole for Auto Tape Selector operation. It is recommended that you
do not record with this kind of Metal cassette. However, metal tape
cassettes recorded on another deck may be played back with the
K-1020 at the Chrome (CrO,) settings. All current cassette tapes will
have this small opening in the cassette shell, so be sure you use
suitable cassettes with the K-1020. Cassette shell structure of current
tape types is shown above, illustrating this feature.
*The K-1020 does not have the required settings for Ferrichrome
(FeCr) tape, since this tape formulation is not widely used. Should
you use a Ferrichrome tape, it will be recorded and played back at
the Normal (LH) settings, and this will result in an unnatural high fre-
guency emphasis. This effect may be compensated for somewhat
by adjusting the tone controls of your amplifier.
e Protecting your recordings
All cassette tapas are provided with erasure protection holes to
prevent recorded tapes from being accidentally erased. There is a
small tab covering the hole on each cassette, and it should be
broken off with a screwdriver after recording a tape. Without this
tab covering the hole, it is impossible to record on that tape again;
thus, you can keep any recorded tape for as long as you wish
without fear of accidental erasure. Should you wish to use a cassette
tape protected in this way for later recording, simply covering the
hole with scotch tape will permit erasure and re-recording.
* When using Chrome (СгО»), ог Metal tape, make sure you do not
cover the hole intended for the Chrome tape formulation check.
(Refer to the illustration of cassette shells according to tape
formulation for correct identification of each).
Break off the tab with
a screw driver
e Taking up slack in the tape
Slack in the tape inside of the cassette shell can be corrected by
simply inserting a pencil into one of the spools and winding it until
all the slack is taken up.
Cassette haif
o Storage of your cassette tapes
After putting a cassette back into its case store in a location away
from exposure to direct sunlight, humidity, high temperatures, and
magnetic fields (away from television sets, speakers, etc.). High
temperatures and humidity will damage the tape itself, while ex-
posure to magnetic fields may cause a loss of recorded materials.
14
15
When your cassette deck fails to function properly, before assuming it is faulty, check he following troubleshooting list. It details the cor-
rective action you can take yourself without having to call a service engineer. If you have any doubts or questions, get in touch with
your nearest Yamaha dealer.
Tape doesnt move in recording or playback.
2 Power plug not properly plugged in.
s End of tape.
s Reinsert plug properly.
* Rewind tape or flip it over.
Rec Standby button fails to function.
* No cassette tape loaded.
e Protective tab broken off.
9 Load a cassette tape.
* Change to different tape, or cover the hole remaining after removal of tab
with cellophane tape.
Sounds become faint and sometimes inaudible.
s Head is dirty.
* Head is magnetized.
e Tape transport section dirty.
* Clean head using cleaning tape.
* Demagnetize head using head demagnetizer.
e Change to different tape.
Recorded sound is warped.
* Tape is bad (stretched or deformed etc.)
e Recording tape is itself warped.
e Replace with a fresh tape.
* As warping of tape itself cannot be rectified, replace with another tape
and test.
Recorded sounds are distorted.
* Recording level is too high.
* Check input level with meter and use lower rec level when recording.
Tape is playing back, but no sound is heard.
* Faulty connection between deck and stereo amplifier.
* Rewire all connections from beginning.
Excessive noise.
e Head is dirty.
e Head is magnetized.
e Worn out or poor quality tape.
e Connection(s) improperly made, .
@ Affected by external electrical noise.
* Clean head.
e Demagnetize head with head demagnetizer.
e Change to better tape.
9 Check input and output connections and reinsert properly.
e Move away from electrical appliances (TV, fluorescent light, electric
blanket, etc.)
Excessive wow (wavering of the sound).
* Dirty capstan, pinch roller, etc., or poor tape.
» Tape is unevenly wound.
» Clean capstan, pinch roller, or change to better tape.
* Rewind tape.
Tape stops in the middle of recording or playback.
e Siack tape, or tape spillage wound around capstan.
* Insert pencil in hole in cassette shell and turn to take up slack.
Falls to record.
o Rec Leve! control too low,
e Protective tabs broken off.
e Adjust rec level control.
* Change tape or cover protective hole with cellophane tape.
Mute Search does not operate.
* Recorded section is too short. —
e Recorded section has low-level portions.
e Conversation, etc. has been recorded.
e Biank sections must be at least 4 seconds long.
High frequencies in the playback sound are emphasized and
unpleasant to listen to, and noise level (hiss) is also high.
* cox or Dolby-recorded tape is played back in NR OFF position.
* Play back in appropriate DOLBY or dbx position.
Playback sound is muffled and high frequencies are inaudible.
* Normally-recorded tape is played back in DOLBY or dbx.
e Heads are dirty.
« Heads are magnetized.
à Play back in NR CFF position.
? Clean heads and carry out demagnetization with head demagnetizer.
Playback sound balance is poor and sound seems muffled.
Sound seems faint.
e dbx-recorded tape is played back in DOLBY B, C or NR OFF
position.
e Play back in dox position.
Playback sound balance is poor. Sounds are sometimes too
loud, sometimes too soft, and meter deflection is abnormally
high.
* Normal or DOLBY-recorded tape is played back through dbx.
e Play back in the position in which it was recorded.
When playing back tapes recorded on other decks, meter
deflections are greater {smaller} than when recording.
* Basic levels are different for different cassette decks.
9 This is not a fault.
Does not aperate when record standby button is pressed.
* No cassette tape has been loaded.
® Protective accidental erasure tabs on cassette have been
broken off.
e Load a cassette tape.
o Replace cassette tape, or cover tab holes with tape.
Recordings cannot be made.
* Recording level controls (PRESET REC LEVEL) are set too low.
* MASTER FADER conrol is set toa low.
2 Adjust level with the level control.
3 Set to “0” position.
Recordings cannot be made with TIMER REC (deck only
plays back).
e Protective accidental erasure tabs on cassette have been
broken off.
e Replace cassette tape, or cover tab holes with tape.
16
17
LINE INC
ий
REC LEVEL
—
Ё
X |
DOLBY |
ENCODE UNIT dolb
LINE AMP oy
“1 doe |
и С
TEST
OFF
PCLBY B/C SWITCH
REC EQ AMP
>
ERASE REC
HEAD HEAD
INTEGRATION
| CIRCUIT las CONTROLER |
Poo = — -
|
|
|
|
|
|
3
T BIAS ADJ
4 „24,
BAS ADUUST
CASSETTE TAPE
SOURCE MONITOR
NR SELECTOR
|
+
| DECODE UNIT | | CUTPUT
HEAD AMP : |
|
_ |] X : e
DECODE UNIT | MON [TOR] [ LINE OUT
THROUGH 7 7
TAPE HEADPHONE
AMP
==. pag — /
AMP CONTROL =p o—— | PHONES
AUTO TAPE SELECTOR | | COMPARATOR | == |
& è
PB | y
HEAD
e O OPERATION SW SET ill zin! UML A MEL AIRE GH 1
me EE Ce Cae
UD PEAK LEVEL METER
MECHANISM FUNCTION SW
SENSOR DRIVER
e ER LS LEO re
LE
. TATE
ES [FEE
DISPLAY
AMP
POWER
SUPPLY
DISPLAY
MECHA
TT
POWER
AC
„= — sm
Fast Wind Time...
Frequency Response
Normal tape (—20 dB)...............
Chrome tape (—20 dB)...
Metal tape (—20 dB)..................
Signal to Noise Ratio
Dalby off... een
Dolby B ON... ccc cer ean scene
Dolby Con iii,
Harmonic Distorion
Normal tape...
Chrome tape...
Metal tape...
input Sensitivity/impedance
Headphones...
Channel Separation (3150 Hz) ....
Cross Talk (125 Hz) cure
Power Supply ...............eeeeeeeeeeee
Power Consumction ,.............—....
Dimensions WxHxD)..................
4-track, 2-channel stereo
R & P Heads: Combination, Pure
Sendust with triple-laminated core
Erase head: lon-plating Ferrite,
Double-gap
Capstan: DC Servo Motor
Reel: Flat torque DC motor
Assist: DC motor
No more than +0.06%
(W Peak);
No more than 0.03% (W.RMS)
About 70 seconds
/45 seconds (High Speed winding)
(C-60)
20 to 18,000 Hz +3 dB
20 to 20,000 Hz +3 dB
20 to 23,000 Hz +3 dB
More than 59 dB
More than 67 dB
More than 75 dB
Mare than 95 dB
Less than 0.5%
Less than 0.5%
Less than 0.8%
40 mV/30 k-ohms
360 mV/47 k-ohms
3.6 mW/8 ohms
40 dB
AC 120V, 60 Hz
28 watts
435x134 x 380 mm
(17-1/8" x 5-1/4" x 15")
7.6 kg (16 Ibs. 12 oz)
* Specifications subject to change without notice.
18
SINCE 1887
NIPPON GAKKI CO. LTD. HAMAMATSU, JAPAN
Printed in Japan BWeG,B®
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