Yamaha Stereo System KX W321 User Manual

U C A  
KX-W421  
KX-W321  
Natural Sound Stereo Cassette Deck  
OWNER’S MANUAL  
MODE D’EMPLOI  
Platine à cassette stéréo de la série Natural Sound”  
NATURAL SOUND CASSETTE DECK KX-W421  
RESET  
DIRECTION  
DIRECTION  
RESET  
CLOSE %  
% CLOSE  
PLAY  
PLAY  
!
!
RECORD/PLAYBACK  
DECK B  
PLAYBACK  
DECK A  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC  
LEVEL  
PHONES  
STANDBY/ON  
0
0
MODE  
RELAY  
DOLBY NR  
OFF/ B/  
DUBBING A # B  
NORMAL HIGH  
O
/
p
/
/
C
+
L
R
MIN  
MAX  
NATURAL SOUND CASSETTE DECK KX-W321  
RESET  
DIRECTION  
DIRECTION  
RESET  
CLOSE %  
% CLOSE  
!
PLAY  
!
PLAY  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
REC LEVEL  
PHONES  
STANDBY/ON  
MODE  
RELAY  
DOLBY NR  
OFF/ B/  
DUBBING A # B  
NORMAL HIGH  
O
/
p
/
/
C
MIN  
MAX  
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CAUTION: READ THIS BEFORE OPERATING  
YOUR UNIT.  
FCC INFORMATION (U.S.A.)  
1. This unit is a sophisticated stereo cassette deck. To ensure  
proper operation for the best possible performance, please  
read this manual carefully.  
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!  
This product, when installed as indicated in the  
instructions contained in this manual, meets FCC  
requirements. Modifications not expressly approved by  
Yamaha may void your authority, granted by the FCC, to  
use the product.  
2. Choose the installation location of your unit carefully. Avoid  
placing it in direct sunlight or close to source of heat. Also  
avoid locations subject to vibration and excessive dust, heat,  
cold or moisture. Keep it away from sources of hum such as  
transformers or motors.  
2. IMPORTANT: When connecting this product to  
accessories and/or another product use only high quality  
shielded cables. Cables supplied with this product  
MUST be used. Follow all installation instructions.  
Failure to follow instructions could void your FCC  
authorization to use this product in the USA.  
3. Do not open the cabinet as this may result in damage to the  
deck or electrical shock. If a foreign object should get into  
the deck, contact your local dealer.  
4. When removing the power plug from the wall outlet, always  
pull directly on the plug; never pull the cord itself.  
5. Do not apply excessive force when operating switches and  
3. NOTE: This product has been tested and found to  
comply with the requirements listed in FCC Regulations,  
Part 15 for Class "B" digital devices. Compliance with  
these requirements provides a reasonable level of  
assurance that your use of this product in a residential  
environment will not result in harmful interference with  
other electronic devices. This equipment generates/uses  
radio frequencies and, if not installed and used  
knobs.  
6. When moving the deck, be sure to first pull out the power  
plug and remove all cords connecting the deck to other  
equipment.  
7. Do not attempt to clean this unit with chemical solvents as  
this may damage the finish. Use a clean, dry cloth.  
according to the instructions found in the users manual,  
may cause interference harmful to the operation of other  
electronic devices. Compliance with FCC regulations  
does not guarantee that interference will not occur in all  
installations. If this product is found to be the source of  
interference, which can be determined by turning the unit  
"OFF" and "ON", please try to eliminate the problem by  
using one of the following measures:  
8. Never allow metallic items (e.g. screwdrivers, tools, etc.) to  
come near the record/playback head assembly. Doing so  
may not only scratch or damage the head’s mirror-smooth  
finish, it may also change the magnetic characteristics of the  
heads, causing a deterioration in reproduction quality.  
9. Although the record/playback head used in this unit is a high  
quality head with outstanding reproduction characteristics, it  
can become dirty through the use of old tapes or from dust  
accumulation over time. This can have a serious effect on  
reproduction quality. Clean the heads regularly with one of  
the commonly available head cleaners or with cleaning  
solutions as explained later in this manual.  
Relocate either this product or the device that is being  
affected by the interference.  
Utilize power outlets that are on different branch (circuit  
breaker or fuse) circuits or install AC line filter/s.  
10. Be sure to read the “TROUBLESHOOTING” section of this  
manual for advice on common operating errors before  
concluding that your unit is faulty.  
In the case of radio or TV interference, relocate/reorient  
the antenna. If the antenna lead-in is 300 ohm ribbon  
lead, change the lead-in to coaxial type cable.  
11. Keep this manual in a safe place for future reference.  
If these corrective measures do not produce satisfactory  
results, please contact your local retailer that is  
authorized to distribute this type of product. If you  
cannot locate the appropriate retailer, please contact  
Yamaha Electronics Corp., U.S.A.  
12. Voltage Selector (General model only)  
The voltage selector on the rear panel of this unit must  
be set for your local mains voltage BEFORE plugging in  
the AC mains supply. (Voltage selector adjustable  
between 110/120/220/240 V AC.)  
6660 Orangethorpe Ave, Buena Park, CA 90620  
The above statements apply ONLY to those products  
distributed by Yamaha Corporation of America or its  
subsidiaries.  
Note  
Please check the copyright laws in your country to record from  
records, compact discs, radio, etc. Recording of copyright  
material may infringe copyright laws.  
We Want You Listening For A Lifetime  
YAMAHA and the Electronic Industries Association's  
Consumer Electronics Group want you to get the most out of  
your equipment by playing it at a safe level. One that lets the  
sound come through loud and clear without annoying blaring  
or distortion – and, most importantly, without affecting your  
sensitive hearing.  
FOR CANADIAN CUSTOMERS  
TO PREVENT ELECTRIC SHOCK, MATCH WIDE  
BLADE OF PLUG TO WIDE SLOT AND FULLY  
INSERT.  
Since hearing damage from loud sounds  
is often undetectable until it is too late,  
YAMAHA and the Electronic Industries  
Association's Consumer Electronics  
Group recommend you avoid prolonged  
exposure to excessive volume levels.  
THIS CLASS B DIGITAL APPARATUS MEETS ALL  
REQUIREMENTS OF THE CANADIAN  
INTERFERENCE-CAUSING EQUIPMENT  
REGULATIONS.  
We  
Want You  
LISTENING  
For A Lifetime  
3
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TABLE OF CONTENTS  
FEATURES ......................................................................... 4  
DUBBING (From DECK A to DECK B) ............................. 13  
CASSETTE TAPES .......................................................... 14  
MAINTENANCE ................................................................ 15  
OPTIONAL REMOTE CONTROL TRANSMITTER .......... 15  
TROUBLESHOOTING ...................................................... 16  
SPECIFICATIONS ............................................................ 17  
CONNECTIONS.................................................................. 5  
NOTES ON THIS MANUAL ................................................ 5  
PLAYBACK (Common to DECKs A and B)......................... 6  
BASIC OPERATION........................................................ 6  
SELECTION SEARCH .................................................... 8  
RELAY PLAYBACK ......................................................... 9  
PLAY TRIM CONTROL ADJUSTMENT (KX-W421 only) 9  
RECORDING .................................................................... 10  
BASIC OPERATION...................................................... 10  
REC MUTE OPERATION .............................................. 12  
REC RETURN OPERATION ......................................... 12  
FEATURES  
÷ High Quality Hard Permalloy Recording/Playback Head in  
Deck B and Playback Head in Deck A  
÷ Dolby B/C Noise Reduction  
÷ Relay Playback from DECK A to DECK B  
÷ Selection Search  
÷ Recording Mute Function  
÷ Play Trim Control for improved playback compatibility with  
other decks (KX-W421 only)  
÷ Rec Return Operation  
÷ Easy Dubbing Operation at Selectable Speed (Normal/  
÷ Auto Tape Selector  
High)  
÷ Dolby HX Pro Dynamic Bias Servo (KX-W421 only)  
÷ Peak Level Meters with Peak Hold Function  
÷ Remote Control Capability with Optional Remote Control  
Transmitter  
“DOLBY”, the double-D symbol  
trademarks of Dolby Laboratories Licensing Corporation.  
and “HX PRO” are  
Dolby noise reduction and HX Pro headroom extension  
manufactured under license from Dolby Laboratories  
Licensing Corporation. HX Pro originated by Bang &  
Olufsen.  
4
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CONNECTIONS  
LINE IN-LINE OUT  
REC  
PLAY  
4
3
L
R
(U.S.A. model)  
To an AC outlet  
REAR PANEL CONNECTIONS  
Make sure that power to both the deck and your amplifier/receiver is turned off  
before making any connections.  
÷ The White plug on the paired connecting cables corresponds to the Left  
channel and the Red plug corresponds to the Right channel. Make sure that  
the left and right channel connections are properly made, and that the plugs  
are inserted firmly.  
REC OUT TAPE PB  
÷ The LINE OUT/PLAY jacks on the deck should be connected to the TAPE PB  
(Playback/Input) jacks on your amplifier/receiver, and the LINE IN/REC jacks  
on the deck should be connected to the REC OUT (Recording/Output) jacks  
on your amplifier/receiver.  
L
R
÷ The LINE OUT terminals on this unit are numbered 3 and the LINE IN jacks  
are numbered 4. When connecting this unit to a YAMAHA amplifier or  
receiver whose terminals are numbered 1, 2, 3, 4 ... (etc.), connect this  
unit's LINE OUT terminals to the input terminals numbered 3 and connect this  
unit's LINE IN terminals to the output terminals numbered 4 on the rear panel  
of the amplifier or receiver.  
Amplifier or receiver  
÷ Connect the power cord to an AC wall outlet or to an AC outlet on the rear  
panel of your amplifier/receiver (if provided).  
NOTES ON THIS MANUAL  
In this manual, the main operation buttons of the front panel are indicated based on DECK B when the operation is common to  
both DECKs A and B. Since the locations of the buttons of DECK A and DECK B are the same, you can easily find the desired  
button even when operating DECK A. This manual covers two models. In most cases, however, only model KX-W421 is shown  
in the example illustrations.  
Main operation buttons of DECK B  
Main operation buttons of DECK A  
Example: KX-W421  
NATURAL SOUND CASSETTE DECK KX-W421  
RESET  
DIRECTION  
DIRECTION  
RESET  
CLOSE  
%
%
CLOSE  
!
PLAY  
!
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC  
LEVEL  
PHONES  
STANDBY/ON  
0
0
MODE  
RELAY  
DOLBY NR  
DUBBING  
NORMAL  
A
# B  
O
/
p
/
/
OFF/  
B/  
C
HIGH  
+
L
R
MIN  
MAX  
5
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PLAYBACK (Common to DECKs A and B)  
Preparation for playback  
÷ Turn on the STANDBY/ON switch.  
÷ Set your amplifier or receiver to cassette deck function mode.  
BASIC OPERATION - To play back a cassette tape  
Example: KX-W421  
!
RESET  
4 5  
NATURAL SOUND CASSETTE DECK KX-W421  
RESET DIRECTION  
DIRECTION  
RESET  
CLOSE  
%
%
CLOSE  
!
!
PLAY  
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
RECORD/PLAYBACK  
PLAYBACK  
DECK A  
DECK B  
PHONES  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC LEVEL  
0
STANDBY/ON  
0
MODE  
DOLBY NR  
DUBBING A # B  
NORMAL HIGH  
O
/
p / / RELAY  
OFF/  
B/  
C
+
L
R
MIN  
MAX  
&
3 2  
PHONES  
STANDBY/ON  
1
1
3
2
DOLBY NR  
OFF/ B/  
C
EJECT  
Insert the cassette with the exposed tape side facing down. (The side  
facing you is called the forward side and the opposite side is called the  
reverse side.) To close the compartment, push the section of the  
compartment door marked % CLOSE until it locks shut.  
Refer to the following  
description.  
MODE  
/[//RELAY  
PLAY  
DIRECTION  
5
4
Select the tape running direction for DECK A  
or B. Each time this button is pressed, the  
tape running direction changes between  
forward (#) and reverse (@), and the  
Refer to the following  
description.  
corresponding indicator lights on the display.  
To fast forward or rewind the tape  
To stop playback  
When the tape running indicator # is lit:  
Press the & button. To remove the cassette tape, press the  
EJECT button. The cassette compartment door opens. To  
set the unit to standby mode, press the STANDBY/ON  
button.  
Pressing the button fast forwards the tape while  
pressing the ! button rewinds the tape.  
When the tape running indicator @ is lit:  
Pressing the ! button fast forwards the tape while  
To set the counter reading to “0000”  
pressing the button rewinds the tape.  
Press the RESET button. Use the tape counter to aid in  
locating a point on a tape (0000 to 9999).  
6
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DOLBY NR selector setting (in step 2)  
:Both sides of the tape are played back. After  
playing, the deck stops at the end of the tape.  
(When the tape running direction is set to ¤, only  
the reverse side is played.)  
Be sure to set the DOLBY NR selector according to the  
system used for recording.  
OFF: For a tape recorded with DOLBY NR OFF.  
B: For a tape recorded with DOLBY B NR.  
C: For a tape recorded with DOLBY C NR.  
: Both sides of the tape are repeatedly played back  
(up to 8 times).  
: Cassette tapes loaded in DECKs A and B  
are played back sequentially. (See “RELAY  
PLAYBACK” on page 9.)  
RELAY  
REVERSE MODE selector setting (in step 3)  
The auto reverse function allows the tape running direction  
be reversed automatically. Select an auto reverse mode  
(
(
,
, or  
) or manual reverse mode  
RELAY  
).  
: When playback or fast forwarding (or rewinding) of  
one side of a tape is finished, the deck stops at the  
end of the tape.  
Display during playback  
Tape running direction  
indicator (DECK A)  
Tape running direction  
indicator (DECK B)  
The A or B indicator shown in  
the display represents the  
last deck operated.  
Tape counter  
Tape counter  
KX-W421/  
KX-W321  
RELAY  
NORM HIGH  
¤
A
¤
B
B C REC  
DUB  
L
+
30 dB 20  
15  
10  
8
6
4
2
0
2
4
6
R
Peak level meters  
Indicate the peaks of the signal levels during recording and playback over a –30 dB to +6 dB range. There are separate meters for each left  
and right channel. These level meters have a peak hold function which holds the peak level for about 1.5 seconds.  
To adjust the volume level  
Note  
Use the volume control of the amplifier or receiver.  
Never press the EJECT button when the tape is in motion.  
To use headphones  
Insert the headphones plug into the PHONES jack. Since  
the sound is also heard from the speakers, operate the  
amplifier to cut off the sound from the speakers for private  
listening.  
7
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Example: KX-W421  
MUTE/SEARCH  
!
RESET  
NATURAL SOUND CASSETTE DECK KX-W421  
CLOSE  
RESET  
DIRECTION  
DIRECTION  
RESET  
%
%
CLOSE  
!
PLAY  
!
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC  
LEVEL  
PHONES  
STANDBY/ON  
0
0
MODE  
RELAY  
DOLBY NR  
DUBBING  
NORMAL  
A
# B  
O
/
p
/
/
OFF/  
B/  
C
HIGH  
+
L
R
MIN  
MAX  
SELECTION SEARCH - To play back a desired selection by searching for the beginning of the selection  
To search for the next selection  
When the @ tape running indicator is lit:  
When the # tape running indicator is lit:  
!
MUTE/SEARCH  
MUTE/SEARCH  
Press  
simultaneously.  
Press  
simultaneously.  
To search for the beginning of the current selection  
When the @ tape running indicator is lit:  
When the # tape running indicator is lit:  
!
MUTE/SEARCH  
MUTE/SEARCH  
Press  
Press  
simultaneously.  
simultaneously.  
To search for the selection located before the current selection  
÷ Operate the following buttons when the beginning of the current selection is being played.  
When the # tape running indicator is lit:  
When the @ tape running indicator is lit:  
!
MUTE/SEARCH  
MUTE/SEARCH  
Press  
Press  
simultaneously.  
simultaneously.  
Notes  
÷ The blank interval between selections must be at least 4 seconds long.  
÷ Selection search may not operate properly with tapes recorded at a low recording level or which have excessive noise.  
8
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Example: KX-W421  
NATURAL SOUND CASSETTE DECK KX-W421  
CLOSE  
RESET  
DIRECTION  
DIRECTION  
RESET  
%
%
CLOSE  
!
PLAY  
!
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC  
LEVEL  
PHONES  
STANDBY/ON  
0
0
MODE  
RELAY  
DOLBY NR  
DUBBING  
NORMAL  
A
# B  
O
/
p
/
/
OFF/  
B/  
C
HIGH  
+
L
R
MIN  
MAX  
MODE  
PLAY TRIM  
RELAY PLAYBACK - To play DECK A and DECK B sequentially  
Load the cassette tapes into DECKs A and B, start playback from DECK A.  
The playback patterns differ according to the setting of the MODE button. Refer to the following.  
Display  
When the MODE button is set to  
:
RELAY  
DECK A (forward side \ reverse side) \ DECK B (forward side \ reverse side)  
RELAY  
5
Up to 8 times  
When the MODE button is set to  
:
DECK A (forward side \ reverse side)  
DECK B (forward side \ reverse side)  
5
5
Up to 8 times  
Up to 8 times  
When the MODE button is set to  
:
DECK A (forward side \ reverse side)  
DECK B ( forward side \ reverse side)  
÷ When the tape running direction is set to , only the reverse side is played.  
When the MODE button is set to  
:
DECK A (forward side or reverse side)  
DECK B (forward side or reverse side)  
PLAY TRIM CONTROL ADJUSTMENT ( KX-W421 only)  
When the level of high frequencies is either over emphasized or absent while playing a tape recorded on another cassette deck,  
adjust the high frequency response with the PLAY TRIM control.  
PLAY TRIM  
When high frequencies are too loud,  
attenuate the high frequencies.  
0
1
2
3
10 dB  
1k  
100  
10kHz  
When high frequencies are too soft, boost  
the high frequencies.  
PLAY TRIM  
1
2
3
High frequency sound is too loud.  
Flat  
0
High-frequency sound is too soft.  
9
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RECORDING  
Preparation for recording  
÷ Turn on the STANDBY/ON switch.  
÷ Set your amplifier or receiver to cassette deck function mode.  
BASIC OPERATION - To record a program source  
Example: KX-W421  
MUTE/SEARCH  
!
RESET  
4 7  
5
NATURAL SOUND CASSETTE DECK KX-W421  
RESET DIRECTION  
DIRECTION  
RESET  
CLOSE  
%
%
CLOSE  
!
!
PLAY  
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
PHONES  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC LEVEL  
0
STANDBY/ON  
0
MODE  
DOLBY NR  
DUBBING A # B  
NORMAL HIGH  
O
/
p / / RELAY  
OFF/  
B/  
C
+
L
R
MIN  
MAX  
&
3 2  
PHONES  
STANDBY/ON  
1
6
1
4
2
3
DOLBY NR  
MODE  
OFF/ B/  
C
/[//RELAY  
Insert the cassette into DECK B with the  
exposed tape side facing down. (The  
side facing you is called the forward side  
and the opposite side is called the  
reverse side.)  
To close the compartment, push the  
section of the compartment door marked  
% CLOSE until it locks shut.  
EJECT  
Refer to the following  
description.  
Refer to the following  
description.  
5
6
7
PLAY  
REC  
REC/PAUSE  
DIRECTION  
BALANCE  
LEVEL  
0
L
R
MIN  
MAX  
Select the tape running direction.  
(Press the DIRECTION button for DECK B.) Each  
time the button is pressed, the tape running direction  
changes between forward (#) and reverse (@), and  
the indicator lights on the display.  
The REC indicator  
lights on the display.  
The deck enters the  
Rec/Pause mode.  
Play the program source to be  
recorded and adjust the  
recording level and balance.  
(KX-W321 does not have a  
REC BALANCE control.)  
Recording  
starts.  
10  
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Setting the recording level (in step 6)  
DOLBY NR selector setting (in step 2)  
Play the loudest passage of the source to be recorded and  
watch the meter readings.  
Set the DOLBY NR selector according to your purpose.  
OFF: No noise reduction.  
B: For recording the sources with Dolby B NR.  
C: For recording the sources with Dolby C NR.  
Adjust the REC LEVEL control so that the highest peak  
reaches +4 of the optimum recording level. Normally, it is  
best to adjust the REC BALANCE control (KX-W421 only)  
such that the left and right meter readings are even.  
÷ Dolby noise reduction is an extremely effective method of  
reducing undesirable background hiss on tapes. This unit  
incorporates both Dolby B NR and the newer Dolby C NR  
system. Dolby C NR is approximately twice as effective  
as the earlier Dolby B NR.  
REVERSE MODE selector setting (in step 3)  
The auto reverse function allows the tape running direction  
to be reversed automatically. Select the auto reverse mode  
(
) or manual reverse mode (  
).  
: When recording on one side of a tape is finished, the  
deck stops at the end of the tape.  
:Both sides of a tape are recorded. After recording,  
the deck stops at the end of the tape.  
÷ When the tape running direction is set to , only  
the reverse side is recorded.  
÷ If you select  
or  
, the reverse mode  
RELAY  
in step 5.  
automatically switches to  
Tape counter  
Display during recording  
Use the tape counter to aid in locating a point on a tape (0000 to 9999).  
To set the counter reading to “0000”, press the RESET button.  
The A or B indicator shown in  
the display represents the  
last deck operated.  
MODE indicator  
Tape running direction indicator  
DOLBY B/ C indicator  
REC indicator  
KX-W421/  
KX-W321  
RELAY  
¤
A
¤
B
B C REC  
L
+
30 dB 20  
15  
10  
8
6
4
2
0
2
4
6
R
Peak level meters  
Indicate the peaks of the signal levels during recording and playback over a –30 dB to +6 dB range. There are separate meters  
for each left and right channel. These level meters have a peak hold function which holds the peak level for about 1.5 seconds.  
To stop recording:  
Press the & button.  
To stop recording temporarily:  
Press the REC/PAUSE button. To resume recording, press  
the PLAY button.  
11  
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Example: KX-W421  
MUTE/SEARCH  
!
NATURAL SOUND CASSETTE DECK KX-W421  
CLOSE  
RESET  
DIRECTION  
DIRECTION  
RESET  
%
%
CLOSE  
!
PLAY  
!
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
PLAY TRIM  
BALANCE REC  
LEVEL  
PHONES  
STANDBY/ON  
0
0
MODE  
RELAY  
DOLBY NR  
DUBBING  
NORMAL  
A
# B  
O
/
p
/
/
OFF/  
B/  
C
HIGH  
+
L
R
MIN  
MAX  
REC MUTE OPERATION - Inserting a blank space during recording  
During recording:  
A 4-second blank interval is automatically recorded on the  
tape and then the deck enters Rec/Pause mode.  
If a blank interval longer than 4 seconds is desired, keep  
pressing for as long as you want. When the MUTE/  
SEARCH button is released, the deck enters Rec/Pause  
mode after making a 4-second blank interval.  
MUTE/SEARCH  
To resume recording, press the PLAY button.  
÷ If a blank interval shorter than 4 seconds is desired, press  
the PLAY button at the desired point during Rec mute  
mode. Recording will be resumed from that point.  
During Rec mute operation, the REC indicator blinks.  
REC RETURN OPERATION - To return to the point at which the recording started  
During recording:  
÷ If you press the PLAY button during recording, Rec Return  
automatically rewinds the tape to the point where the  
PLAY button was pressed.*  
When the @ indicator  
When the # indicator  
If you reset the tape counter to “0000” during recording,  
Rec Return automatically rewinds the tape to the “0000”  
point.  
is lit:  
is lit:  
!
Rec Return functions according to the most recent  
operation. For example, if you reset the tape counter to  
“0000” and then press the PLAY button later, Rec Return  
rewinds to the point where the PLAY button was pressed.  
* The PLAY button cannot be used to mark a return point  
while dubbing.  
DOLBY HX PRO DYNAMIC BIAS SERVO SYSTEM  
(KX-W421 only)  
Synchronized recording function  
When operating this unit in combination with the  
YAMAHA CD Player which has SYNCHRO button on its  
remote control transmitter, CD Synchronized recording  
function can be utilized. This function is operated with  
the remote control transmitter of the CD Player.  
(Regarding the operation, refer to the manual of the CD  
Player.)  
This unit incorporates the Dolby HX Pro system which  
automatically controls the effective bias to reduce  
distortion and noise, improving high frequency  
response during recording. Tapes recorded with this  
system retain the same high quality even when played  
back on any other cassette deck.  
12  
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DUBBING (From DECK A to DECK B)  
You can make dubbing from DECK A to DECK B. Open the cassette compartments by pressing the EJECT buttons and load a  
blank cassette tape in DECK B and the original cassette tape in DECK A.  
Lights during dubbing.  
Example: KX-W421  
Display during dubbing  
RELAY  
NORM HIGH  
¤
A
¤
B
B C REC  
DUB  
NORM or HIGH  
indicator lights during  
dubbing.  
L
+
30 dB 20  
15  
10  
8
6
4
2
0
2
4
6
R
NATURAL SOUND CASSETTE DECK KX-W421  
CLOSE  
RESET  
DIRECTION  
DIRECTION  
RESET  
%
%
CLOSE  
2
3
!
PLAY  
!
PLAY  
Cassette Stabilizer  
Cassette Stabilizer  
PLAYBACK  
DECK A  
RECORD/PLAYBACK  
DECK B  
SEARCH  
EJECT  
&
MUTE/SEARCH  
&
REC/PAUSE  
EJECT  
1
PLAY TRIM  
BALANCE REC  
0
LEVEL  
PHONES  
STANDBY/ON  
0
MODE  
RELAY  
DOLBY NR  
DUBBING  
NORMAL  
A
# B  
O
/
p
/
/
OFF/  
B/  
C
HIGH  
+
L
R
MIN  
MAX  
Set the MODE selector to  
or position.  
Set the  
DIRECTION  
buttons for DECKs  
A and B.  
Set the dubbing speed to either NORMAL  
(normal speed) or HIGH (twice the normal  
speed) with the DUBBING buttons*.  
Dubbing starts automatically.  
3
1
2
If you select  
or  
, the reverse  
RELAY  
mode automatically switches to  
.
DUBBING A # B  
NORMAL HIGH  
The corresponding NORM  
or HIGH indicator lights on  
the display.  
DIRECTION  
MODE  
/[//RELAY  
* Higher quality sound will be obtained with the  
NORMAL setting.  
To stop dubbing  
Note  
Press the & button. (If you press the & button on DECK B,  
both decks stop simultaneously and the dubbing mode is  
cancelled. If you press the & button on DECK A, DECK A  
stops immediately and then DECK B stops after recording a  
4-second blank section.)  
During dubbing, Dolby NR is automatically set to off and the  
recorded tape can be dubbed as is. (When the tape to be  
dubbed is recorded with Dolby NR, this effect is also  
dubbed.)  
When the tape in DECK B reaches its end, DECK B stops  
and then DECK A stops.  
When the tape in DECK A reaches its end, DECK A stops  
and DECK B stops after providing a blank section of about 4  
seconds.  
PLAY TRIM control adjustment (KX-W421 only)  
For normal use, set the PLAY TRIM control to the center  
position.  
When the high frequencies sound is too noticeable or too  
weak while monitoring the sound of DECK B, compensate  
the high frequency response with the PLAY TRIM control  
before dubbing. The compensated sound can be dubbed  
onto DECK B.  
As the compensation result depends on the quality of the  
tape loaded in DECK A, the monitored sound cannot be  
recorded as it is.  
Available operations while dubbing  
The Rec Return function can be carried out on DECK B.  
Refer to “REC RETURN OPERATION” on the previous  
page.  
Refer to “PLAY TRIM CONTROL ADJUSTMENT” on page  
9.  
13  
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CASSETTE TAPES  
CASSETTE TAPES  
PROTECTING YOUR RECORDINGS  
There are many different types of cassette tapes available.  
However, they all conform to standard specifications so any  
brand may be used with the deck.  
All cassette tapes are provided with erasure protection holes  
to prevent accidental erasure of recorded contents. There is  
a small tab covering the hole on each side of the cassette,  
and it should be broken off after recording the tape. Without  
this tab covering the hole, it is impossible to record onto that  
tape. Thus, you can safely protect a recording for as long as  
you wish without fear of accidental erasure. Should you wish  
to use a cassette tape protected in this way for recording,  
simply covering the hole with adhesive tape will permit  
erasure and re-recording.  
÷ 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 (Type I/NORM), Chrome (Type II/HIGH  
<CrO2>), Ferrichrome (Type III/FeCr), and Metal (Type IV/  
METAL), and they each require specific tape deck  
adjustments for optimum performance.  
* YAMAHA does not recommend the use of 120 minute  
length cassettes since the extreme thinness of the tape  
makes them susceptible to mechanical and recording  
problems.  
÷ When using Chrome (Type II/HIGH <CrO2>) or Metal  
(Type IV/METAL) tapes, make sure you do not cover the  
hole intended for the Auto Tape Selector operation.  
AUTO TAPE SELECTOR DETECTION SLOTS  
The deck has a built-in Auto Tape Selector which  
automatically adjusts for the proper bias, level and  
equalization according to the tape formulation — all you  
have to do is to load a cassette and the Auto Tape Selector  
does the rest.  
The Auto Tape Selector determines which type of tape is  
loaded by sensing detector slots in the top of the tape shell.  
Each tape formulation has its own characteristic hole  
markings standardized by the tape industry.  
÷ Early model Metal (Type IV/Metal) tape formulation  
cassette shells do not have the slots for Auto Tape  
Selector operation. As a result, early model Metal type  
tapes recorded on another deck will be played back with  
the deck at the Chrome (Type II/HIGH <CrO2>) settings.  
YAMAHA does not recommend using this kind of tape.  
÷ The deck does not have the required setting for  
Ferrichrome (Type III/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 (Type I/NORM) settings, which will result in an  
unnatural high frequency emphasis. This effect may be  
compensated for somewhat by adjusting the PLAY TRIM  
control and/or the tone controls of your amplifier/receiver  
during playback.  
TAKING UP SLACK IN THE TAPE  
As a precaution against tape entanglement and damage,  
remove any slack in the tape before inserting cassettes into  
the deck. This is accomplished by inserting a pencil, pen or  
similar object into one of the spools and gently winding it  
until all the slack is removed. You do not have to wind it too  
tightly.  
Be careful not to touch the tape part itself. It is very delicate  
and touching it may damage the tape and its recorded  
contents.  
TYPE II  
TYPE IV  
Detector slots  
Detector slots  
STORING CASSETTES  
After putting a cassette tape back into its case, store it 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 exposure to magnetic fields  
may cause a loss of recorded material. Avoid touching the  
tape surface with your fingers, since dirt or finger oil will  
contaminate the deck’s heads.  
14  
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MAINTENANCE  
CLEANING OF THE TAPE PATH  
DECK B  
Continued high quality performance of your deck is  
dependent upon periodic cleaning of the heads, capstan,  
pinch roller, and all surfaces over which the tape travels.  
Normal use will cause an accumulation of dirt and dust on  
the heads, capstans, and pinch rollers. This can lead to  
poor sound quality, drop outs (intervals with no sound),  
unsteady tape speed, loss of high frequency response, etc.  
Thus, clean the heads and all surfaces over which the tape  
travels with a commercially available cleaning cassette and  
fluid type cleaner.  
Heads  
Capstan  
Capstan  
Pinch roller  
Pinch roller  
DEMAGNETIZATION  
After 20-30 hours of use, enough residual magnetism will  
build up on the heads to cause poor high frequency  
reproduction. At this time you should use a commercially  
available cassette tape-type head demagnetizer.  
÷ When cleaning the tape path or demagnetizing the heads,  
be sure to follow carefully the instructions of the  
concerning materials such as cleaning fluid or head  
demagnetizer.  
OPTIONAL REMOTE CONTROL TRANSMITTER  
With the optional remote control transmitter RKX1, you can  
operate this unit at your listening position. For details, refer  
to the instruction manual supplied with the remote control  
transmitter.  
REMOTE CONTROL OPERATION RANGE  
Example: KX-W421  
Remote sensor  
SINGLE DECK  
¤
INTRO SCAN  
DOUBLE DECK  
DUBBING  
DECK A/B  
DIR  
A
DIR  
B
COUNTER  
RESET  
!
!
SEARCH  
PLAY  
7 m (23 feet)  
STOP  
REC/PAUSE REC MUTE  
RKX1  
s
30°  
30°  
15  
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TROUBLESHOOTING  
If your cassette deck fails to operate normally, check the following table. It lists common operating errors and simple measures  
which you can take to correct the problem. If it cannot be corrected, or the symptom is not listed, disconnect the deck’s power  
cord and contact your authorized YAMAHA dealer or authorized service center for help.  
Fault  
Cause  
Cure  
Tape doesn’t move in recording or  
playback.  
÷ Power plug is not properly plugged in.  
÷ Cassette shell is warped or damaged.  
÷ Reinsert plug properly.  
÷ Do not play damaged tapes.  
If it happens that this unit does not  
work normally.  
÷ There is an influence of strong external  
noise (lightning, excessive static  
electricity, etc.) or a misoperation was  
performed while using this unit.  
÷ Turn the unit off and disconnect the AC  
power from the AC outlet. After about  
30 seconds have passed, connect the  
power and try again.  
REC/PAUSE button fails to function.  
÷ No cassette tape loaded.  
÷ Protective tabs are broken off.  
÷ Load a cassette tape.  
÷ Change tape or cover protective hole  
with adhesive tape.  
Sounds become faint and sometimes  
inaudible.  
÷ Head is dirty.  
÷ Head is magnetized.  
÷ Clean head.  
÷ Demagnetize head using head  
demagnetizer.  
÷ Tape is damaged or of poor quality.  
÷ Change to a different tape.  
Recorded sound is distorted.  
÷ Tape is bad (stretched, deformed, etc.).  
÷ Cassette shell is warped.  
÷ Replace with a fresh tape.  
÷ A warped cassette shell cannot be  
fixed. Replace with another tape and  
test.  
÷ Recording level is too high.  
÷ Check input level with signal level meter  
and use lower rec level when recording.  
Tape is playing back, but no sound is  
heard.  
÷ Faulty connection between deck and  
stereo amplifier/receiver.  
÷ Check and secure connections.  
Excessive noise.  
÷ Head is dirty.  
÷ Clean head.  
÷ Head is magnetized.  
÷ Demagnetize head with head  
demagnetizer.  
÷ Worn out or poor quality tape.  
÷ Connection(s) improperly made.  
÷ Change to better tape.  
÷ Check input and output connections  
and reinsert properly.  
÷ Move deck away from electrical  
appliances (TV, fluorescent light,  
electric blanket, etc.).  
÷ Affected by external electrical noise.  
Excessive wow (wavering of the  
sound).  
÷ Dirty capstan, pinch roller, etc., or poor  
tape.  
÷ Clean capstan and pinch roller, or  
change to better tape.  
÷ Tape is wound unevenly.  
÷ Rewind tape.  
Tape stops in the middle of recording  
or playback.  
÷ Slack tape, or tape spillage wound  
around capstan.  
÷ Insert pencil in hole in cassette shell  
and turn to take up slack.  
Fails to record.  
÷ REC LEVEL control is set to too low.  
÷ Protective tabs are broken off.  
÷ Adjust REC LEVEL control.  
÷ Change tape or cover protective hole  
with adhesive tape.  
Search does not operate correctly.  
÷ Blank section is too short.  
÷ Blank sections must be at least 4  
seconds long.  
÷ Recorded section has low-level portions.  
÷ Conversation, etc. has been recorded.  
÷ No remedy  
÷ No remedy  
High frequencies in the playback  
sound are emphasized and unpleasant  
to listen to, and noise level (hiss) is  
also high.  
÷ Dolby NR-recorded tape is played back  
in OFF position.  
÷ Play back in appropriate Dolby NR  
position.  
16  
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Fault  
Cause  
Cure  
Playback sound is muffled and high  
frequencies are inaudible.  
÷ Normally-recorded tape is played back in  
Dolby NR.  
÷ Play back in OFF position.  
÷ Heads are dirty.  
÷ Heads are magnetized.  
÷ Clean heads and carry out  
demagnetization with head  
demagnetizer.  
When playing back tapes recorded on  
other decks, meter deflections are  
greater (smaller) than when recorded.  
÷ Basic levels are different for different  
cassette decks.  
÷ This is not a fault.  
The remote control transmitter cannot  
be operated.  
÷ The batteries are exhausted.  
÷ The remote control transmitter is  
operated from an incorrect distance or  
angle.  
÷ The remote control sensor is lighted  
strongly.  
÷ Replace batteries.  
÷ Operate it from less than 7 meters  
(about 23 ft.) and 30°.  
÷ Place the unit away from the strong  
light.  
SPECIFICATIONS  
Type..................................... Auto reverse 4-track, 2-channel  
recording and playback stereo double cassette deck  
Motors ......................................... DC servo motor x 2 (main)  
Heads .................... Recording/playback: Hard Permalloy x 1  
Erase: Double-gap Ferrite x 1  
Playback: Hard Permalloy x 1  
Rapid Transport .......................................... 100 sec. (C-60)  
Wow and Flutter  
WRMS ...................................................................... 0.08%  
W.Peak ................................................................... ±0.15%  
Signal-to-Noise Ratio  
(Dolby NR off)...........................................................58 dB  
(Dolby B NR on) .......................................................66 dB  
(Dolby C NR on) .......................................................74 dB  
Frequency Response (–20 dB)  
GENERAL  
Power Supply  
U.S.A. and Canada model ........................... 120 V, 60 Hz  
Europe and U.K. model ............................... 230 V, 50 Hz  
Australia model............................................ 240 V, 50 Hz  
General model.................... 110/120/220/240 V, 50/60 Hz  
Power Consumption  
KX-W421 ............................................14 W/7 W (Standby)  
KX-W321  
U.S.A. and Canada model.............11 W/7 W (Standby)  
Other models .................................12 W/7 W (Standby)  
Dimensions (W x H x D)...................... 435 x 146 x 279 mm  
(17-1/8" x 5-3/4" x 11")  
Weight ........................................................... 5.0 kg (11 lbs.)  
Accessory  
Audio cord................................................................ 1 pair  
<KX-W421>  
Type I/Normal.............................. 20 ~ 17,000 Hz ±3 dB  
Type II/High (CrO2) .................... 20 ~ 18,000 Hz ±3 dB  
Type IV/Metal .............................. 20 ~ 20,000 Hz ±3 dB  
<KX-W321>  
* Specifications subject to change without notice.  
Type I/Normal.............................. 20 ~ 16,000 Hz ±3 dB  
Type II/High (CrO2) .................... 20 ~ 17,000 Hz ±3 dB  
Type IV/Metal .............................. 20 ~ 19,000 Hz ±3 dB  
Harmonic Distortion  
KX-W421 .................................................... less than 0.8%  
KX-W321 .................................................... less than 1.0%  
Input Sensitivity/Impedance  
Line ...................................................... 100 mV/43 k-ohms  
Output Level  
Line ..................................................... 570 mV/1.4 k-ohms  
Phones..................................................... 0.25 mV/8 ohms  
Channel Separation (1 kHz)...................... more than 40 dB  
Crosstalk (125 Hz) ..................................... more than 55 dB  
17  
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Cause  
Remède  
Problème  
÷ Une bande enregistrée normalement est  
lue avec Dolby NR.  
÷ Lire en position OFF.  
Le son de lecture est étouffé et les  
hautes fréquences sont inaudibles.  
÷ Les têtes sont sales.  
÷ Nettoyer les têtes et effectuer la  
démagnétisation avec un  
démagnétiseur de tête.  
÷ Les têtes sont magnétisées.  
÷ Les niveaux de base sont différents pour  
÷ Ceci n’est pas un défaut.  
Lors de la lecture de bandes  
enregistrées sur d’autres platines, les  
déflexions du compteur sont plus  
grandes (plus petites) qu’à  
l’enregistrement.  
diverses platines.  
÷ La pile est déchargée.  
÷ Remplacer la pile.  
La télécommande ne fonctionne pas.  
÷ La télécommande est actionnée d’une  
distance ou sous un angle incorrects.  
÷ Le détecteur de la télécommande est  
fortement éclairé.  
÷ La faire fonctionner à moins de 7  
mètres et sur 30°.  
÷ Placer l’appareil à l’abri de lumières  
fortes.  
CARACTERISTIQUES TECHNIQUES  
Configuration des pistes ............. Platine à cassette double  
GENERALES  
stéréo avec inversion automatique pour l’enregistrement et  
la lecture, 4 pistes, 2 canaux  
Moteur ..............Moteur asservi CC x 2 (moteurs principaux)  
Têtes...................Enregistrement/Lecture: Permalloy dur x 1  
Effacement: Ferrite à double entrefer x 1  
Lecture: Permalloy dur x 1  
Transport rapide................................. 100 secondes (C-60)  
Pleurage et scintillement  
Alimentation  
Modèle pour les Etats-Unis et le Canada  
................................................................... 120 V, 60 Hz  
Modèle pour l’Europe et le Royaume-Uni  
................................................................... 230 V, 50 Hz  
Modèle pour l’Australie ............................... 240 V, 50 Hz  
Modèle général............................................ 110/120/220/  
240 V, 50/60 Hz  
Eff., pondéré ........................................................... 0,08%  
Crête, pondéré ..................................................... ±0,15%  
Rapport signal/bruit  
Consommation  
KX-W421 ................................................ 14 W/7 W (Veille)  
KX-W321  
(Dolby NR à l’arrêt) ...............................................58 dB  
(Dolby B NR en marche) ......................................66 dB  
(Dolby C NR en marche) ......................................74 dB  
Réponse en fréquence (–20dB)  
Modèle pour les Etats-Unis et le Canada  
............................................................ 11 W/7 W (Veille)  
Autres modèles ................................. 12 W/7 W (Veille)  
Dimensions (L x H x P) ....................... 435 x 146 x 279 mm  
Poids ........................................................................... 5,0 kg  
Câbles audio ......................................................... 1 paire  
<KX-W421>  
Type I/normale ............................ 20 ~ 17.000 Hz ±3 dB  
Type II/élevée (CrO2) .................. 20 ~ 18.000 Hz ±3 dB  
Type IV/métal .............................. 20 ~ 20.000 Hz ±3 dB  
<KX-W321>  
Type I/normale ............................ 20 ~ 16.000 Hz ±3 dB  
Type II/élevée (CrO2) .................. 20 ~ 17.000 Hz ±3 dB  
Type IV/métal .............................. 20 ~ 19.000 Hz ±3 dB  
Distorsion harmonique  
* Les caractéristiques techniques sont sujettes à des  
changements sans préavis.  
KX-W421 ................................................... Moins de 0,8%  
KX-W321 ................................................... Moins de 1,0%  
Sensibilité d’entrée/impédance  
Ligne .................................................... 100 mV/43 k-ohms  
Niveau de sortie  
Ligne ................................................... 570 mV/1,4 k-ohms  
Casque ..................................................... 0,25 mV/8 ohms  
Séparation des canaux (1 kHz) ...............inférieure à 40 dB  
Diaphonie (125 Hz) ...................................inférieure à 55 dB  
YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.  
YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA  
YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR, 22-34, 25462 RELLINGEN, BEI HAMBURG, F.R. OF GERMANY  
YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE  
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND  
YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VASTRA FRÖLUNDA, SWEDEN  
YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA  
Printed in Malaysia  
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VZ 79000-1  

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