Stereo Uasselte Deck
Cassette Deck
Operating Instructions
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
This symbol is intended to alert the
user 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.
This symbol is intended to alert the
user to the presence of important
operating and maintenance (servicing)
instructions in the literature
accompanying the appliance.
* The graphical symbois are on the rear enclosure.
Owner’s Record
The model and serial numbers are located at the rear.
Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony
dealer regarding this product.
Model! No.TC-WR670 Serial No.
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
Reorient the receiving antenna
Relocate the equipment with respect to the receiver
Mave the equipment away from the receiver
Plug the 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
“How to Identify and Resolve Radio-TV Interference
This booklet is available from the U.S. Government Printing
Office, Washington, DC 20402, Stock No. 004-000-00345-4.
Table of Contents
Getting Started
Features …..…...........rcrrsreree era area ene are nanas aan aan een e acer ce annee 3
Precautions …….…..........ecrrecnreecsa sean scan rere eee rea e eee ane 4
INSAIALION «eee ieee eee eee eee errr eee 4
Connections esse eee ieee eee reece ean eran 5
Identification of front panel parts ..................«e=eee= eee en 6
Playing back .....................en.ieeeee nene en 7
Playing back both decks in succession—Relay Play ........... 8
Skipping blanks—Blank SKkip .....................+...2m2e ene. 9
Playing back automatically after rewinding
—Auto Play ..................eeeeeee ere 9
Locating a selection
—Automatic Music Sensor (AMS) ...................2ee2 10
Recording .......................... eee nee e ncree ene env 11
Adjusting the recording level eee 12
What is the Dolby HX PRO system? cocoon 12
To protect a recording es... EEE EEE 13
Recording the same source on both decks
—Simultaneous Recording... 14
Recording on both decks in succession
—Relay RecordinQ er 15
Inserting a blank space during recording
—Record Muting .…..…...….......…...rrreseerseeneenenen es sannee es 15
Dubbing a tape ...........................eeeeeeeee KEK KR ER EEE EEE 16
Dubbing only desired portions a... rer 17
Maintenance esse rie RRE eee carecen 18
Specifications .………......….….….….…..ernnnenennnsnnnnennnnnn=ne*=n 18
Troubleshooting quide ……...................……rrerrenrenrennressasencnes 19
For higher quality recording/playback
* The Dolby HX PRO* system which improves the linearity
of the tape's high-range response during recording.
- B and C type Dolby NR* systems which reduce tape
For your convenience
» Automatic tape type detection during playback and
« The AMS and Blank Skip functions provide easy access
to a desired selection.
- À relay function for long recording and playback.
+ Synchronized dubbing at normal or high (double) speed.
* Dolby noise reduction and HX Pro headroom extension manufactured
under license from Dolby Laboratories Licensing Corporation. HX Pro
originated by Bang & Olufsen.
“DOLBY", the double-D symbol OU and “HX PRO" are trademarks of Dolby
Laboratories Licensing Corporation.
On safety
+ Operate the unit only on 120 V AC, 60Hz.
+ Before operating the unit, be sure that the operating
voltage of your unit is identical with that of your local power
* Should any solid object or liquid fall into the cabinet,
unplug the unit and have it checked by qualified personnel
before operating it any further.
« Unplug the unit from the wall outlet if it will not be used for
a long time. To disconnect the cord, pull it out by grasping
the plug. Never pull the cord itself.
On operation
* When the unit is not used, turn the power off to conserve
energy and to extend the useful life of your unit.
» Because of a safety mechanism, the function buttons will
not operate if the cassette holder is not completely closed,
if there is no cassette in the cassette holder, or if a
cassette has been incorrectly inserted into the cassette
On head cleaning
The head and tape path should be cleaned after every ten
hours of operation. Dirty heads and a dirty tape path may
— loss of high-frequency response
— loss of sound volume
— sound drop-out
If you have any questions or problems concerning your unit,
please contact your nearest Sony dealer.
For detailed safety precautions, see the leaflet
Notes on Installation
* Place the unit with the front panel facing you in a location
with adequate air circulation to prevent overheating of the
* Do not place the unit:
— near heat sources such as radiators or air ducts.
— in places subject to direct sunlight, excessive dust,
mechanical vibration or shock.
— in an inclined position.
— on a rug or other soft surfaces that would block the
ventilation holes on the bottom of the unit.
Do not throw away the carton and the packing material
They will come in handy when transporting the unit or shipping it for
Notes on Connections
* Turn off the power to all equipment to be connected before
making any connection.
* Note that the red plug of the supplied connecting cord is
for right-channel (R) connection and the white plug for left-
channel (L) connection.
* The connecting cords should be fully inserted into the
jacks. A loose connection may cause hum pickup.
Z— Signal flow
TP qe TC-WR670 = PEED reo
He, = ==
to an AC outlet 8
to another | | from another
tape deck tape deck
to a wall outlet
| for playback
Amplifier Another tape deck
A 7
ai == ap ae
to a wall outlet
Identification of Front Panel Parts
"Remote control sensor
For details, refer to the page number indicated in @ .
[1] POWER switch
[2] Deck A
[3] A (eject) button (deck A)
[4] OO NR (Dolby noise reduction) switch 9 Y © ©
[5] A+B REC (simultaneous recording) button and
indicator &
[6] DIR (direction) MODE switch O © ® © ® ®
BLANK SKIP button and indicator O O €
Display panel
[9] SYNCHRO DUBBING buttons ©
NORM (normal) SPEED button
BALANCE control ®
11) Tape COUNTER and RESET button
12 REC (recording) LEVEL control Y E
19 2 (eject) button (deck В)
Deck B
15 PHONES (headphones) jack (stereo phone jack)
Tape operation buttons
E (stop) button
«44 (leftward fast winding (AMS**) button
- (reverse play) button
> (forward play) button
Pp» (rightward fast winding)(AMS**) button
IN PAUSE button
O REC MUTE (record muting) button 6
@ REC (recording) button
“Remote control sensor
You can remotely contro! this cassette deck with:
— A remote commander that came with a Sony amplifier or
receiver if it has the lll mark and cassette deck control
— Any optional Sony remote commander with the El mark
and cassette deck control capability.
“AMS is an abbreviation for Automatic Music Sensor.
Playing Back
Follow the procedure below to play back a cassette on deck
A or B.
2 5
1 Turn on the amplifier and select the tape
5 Start playback.
From the front side
From the reverse side
Tape direction
2 Insert a cassette.
3 Set DO NR to the same position that was used
when the cassette was recorded.
4 Select the direction mode.
To play back to the D) DIR
end of one side only (D | MODE
To play back both
sides continuously* MODE
* After playing back five times, the deck automatically stops.
To stop playback, press the IM button.
To stop playback momentarily, press the II button.
To restart play, press the Il, or Bb» button.
To fastwind a tape rightward, press the PP button in stop
To fastwind a tape leftward, press the << button in stop
Is it necessary to set the tape type being used?
No. The deck has an automatic tape type detection system.
When decks A and B are in playback mode
Onty playback from deck A will be audible.
If fast winding starts in the middle of a selection
The Blank Skip function is activated (the BLANK SKIP indicator is
on). Press the BLANK SKIP button to deactivate the function.
What is the Dolby NR system?
The Dolby NR (noise reduction) system reduces tape hiss noise in
low-level, high-frequency signals by boosting the signals during
recording and lowering them during playback.
The Dolby HX PRO system is effective only during recording, not
during playback.
Playing Back Both Decks in Succession —Reiay Play
The Relay Play function plays back cassettes in deck A and
deck B continuously and in consecutive order.
1 2 1
1 insert cassettes into both decks.
2 Set the direction mode to RELAY.
3 Start playback of the cassette to be listened to
From the front side
From the reverse side
To stop relay play
Press the IN button of the deck playing.
Playback seguence of relay play
Relay play always follows the sequence below regardless of
where playback starts.
After playing back five times, Relay Play automatically stops.
Deck A Deck A
(Front side) "Ч | (Reverse side)
Deck B Deck B
(Reverse side) — (Front side)
Playing back more than two cassettes in succession
Replacing cassettes that have finished playing with new ones
allows you to play back two or more cassettes alternately on each
a Playing Back
Skipping Blanks Automatically after
—Biank Skip
Rewinding —Auto Play
The Blank Skip function fast winds the cassette when a
blank space of ten seconds or more is encountered, then
resumes playback when a recorded portion is detected.
The Auto Play function automatically starts playing back a
cassette after fast winding it to the beginning.
Activate the Blank Skip function.
— e —
7 i “
<= >
To deactivate the Blank Skip function
Press the BLANK SKIP button, turning off the BLANK SKIP From the beginning of... While pressing...
indicator. front side >, press dd.
reverse side =, press >>.
Locating a Selection
— Automatic Music Sensor (AMS)
The AMS function detects the blank space between
selections, allowing you to quickly locate the beginning of
desired selections.
<< / >>
During playback, check the direction indicator and
press PP or 4d referring to the following table.
, Desired selection
Direction Selecti
indicator Next selection being played
“Е `
PLAY << >>
и ``
The PLAY indicator flashes while the AMS searches for
the beginning of the selection. After locating the
beginning of the selection, playback will start
The AMS may skip a selection in the following cases:
« If the >> (or 4) button is pressed immediately before the
following selection.
* If there is noise in the space between selections.
* |f the space is less than four seconds long.
The AMS will treat the following as blanks:
+ a long pause in the music
» a passage of low frequencies or very low volume
* a gradual increase or decrease in volume
The AMS does not function on both decks simultaneously
+ The AMS is activated for the deck whose "> or «+ button is
pressed first.
* |f the AMS is activated for deck B during playback on deck A, deck
B fast winds to the beginning of the selection and stops.
+ If the AMS is activated for deck A during playback on deck B, deck
A fast winds to the beginning of the selection and begins
playback. The sound from deck B will be cut off when playback
begins on deck A.
Follow the procedure below to record a source on a
cassette in deck A or deck B.
5 Play the program source to be recorded.
123 76
6 Adjust the recording level.
VÍ See Adjust the
@ Recording Level
A, ` оп раде 12.
1 Insert a cassette.
7 Adjust the balance.
8 Restart the program source, if required.
3 Select the side(s) to be recorded.
9 Start recording.
To record on the front side of the cassette
When > is on Press = once or IL.
When <Tis on Press Ia twice.
To record on the reverse side of the cassette
When <Jis on Press = once or Il.
When [> is on Press «fl twice.
| IR
To record on one side ODE
To record on both sides
4 Place the unit into recording pause mode.
To stop recording
Press the IM button.
Note on step 3
Even at the = position, recording automatically stops when the
tape reaches the end of the reverse side.
Note on step 4
The direction indicator for the side opposite the specified one will
blink for three seconds to indicate that recording is possible on that
side also. If, however, the tab for that side has been removed to
prevent recording, the indicator will not blink. If the tab has been
removed from either side A or B, recording is impossible on this
To recover a cassette for recording, cover the respective slot with
tape. See "To Protect a Recording” on page 13.
Note on step 9
Pressing the = or B= button twice will cause the unit first to
change tape direction and then start recording in that direction.
Adjusting the Recording Level
The optimum recording level, which differs according to the
tape type, is indicated on the PEAK LEVEL METER for each
tape type.
Adjust the REC LEVEL control as high as possible without
exceeding the recommended range for the tape type being
Recommended maximum PEAK LEVEL METER reading
de 2-6 20 -10 — —3 o +3 6
| EE less—
Din Iv
ог Туре | (погта!) ог — — — — — — —
Туре || (СгО») tape
Type IV
{metal) tape
Tips on recording level adjustment
* If the recording level setting is too high, the recording will
be distorted; if it is too low, the tape will produce a hissing
sound. Therefore, the recording level should be set as high
as possible without causing distortion.
* If the program source to be recorded has many high
frequency signals, set the level to a relatively low position.
What is the Dolby HX PRO system?
The Dolby HX PRO system provides linearity in high-range
frequency response during recording. Tapes recorded with
this system retain the same high quality even when played
back on other tape decks.
315 Hz
Distortion 6.3 kHz
Output |
| \ 10 kHz
~N 315 Hz distortion
Bias current — High
Established bias current
As shown above, characteristics such as output level and
distortion differ widely according to the bias (high-
frequency) current. In conventional systems, the bias
current is susceptible to variations in certain recording
signals (see diagram below) which may cause fluctuations
in frequency response, distortion, or other unwanted
| Fluctuation
Frequency —— High
With the Dolby HX PRO system, the effective bias amount
added to the bias current is controlled in millisecond units to
greatly reduce distortion, improving linearity in high-range
response and ensuring high-intensity recording with minimal
distortion and noise.
To Protect a Recording
To protect a recording on To recover a cassette for
side A or B recording
Break out the respective tab. Cover the respective slot with
Side A
‘ A
Tab for Tab for
side B side A
When using Type Ii (Cr02) or Type IV (metal) cassettes
Be careful not to cover the detector slots which are necessary
for automatic tape type detection.
Type Il (CrO2) Type IV (metal)
Detector slots Detector slats
Cassette Care
* Avoid touching the tape surface of a cassette to prevent
contamination of the heads by dirt, dust, or oil on the skin.
» Keep cassettes away from equipment with magnets, such
as speakers and amplifiers, as erasure or distortion of the
recorded tape could occur.
» Do not expose cassettes to direct sunlight, extremely cold
temperatures, or moisture.
Note on cassettes longer than 90 minutes
The use of cassettes longer than 90 minutes is not
recommended except for long continuous playback.
Recording the Same Source on Both Decks
—Simultaneous Recording
The Simultaneous Recording function allows you to record
the same source on cassettes in decks A and B at the same 7 Select the side from which to start recording.
1 3 4 6 1 From the front side
From the reverse side
2 8 7 8 Start recording.
1 Insert cassettes for recording into both decks. pe
2 Select the Dolby NR setting.
DONA To stop Simultaneous Recording
че} Press the ll button on the respective deck.
3 Select the side(s) to be recorded.
To record on DIR
one side only MODE
To record оп DIR
both sides | МОРЕ
4 Place both decks into recording pause mode.
5 Play the program source to be recorded. If the A + B REC indicator blinks three times
A tab is missing for one of the sides selected for recording. Cover
the slot with tape (see page 13).
6 Adjust the recording level and balance. Using the pause and record muting buttons during
(See pages 11 and 12.) Simultaneous Recording
Pressing the H or O button on deck B during Simultaneous
Recording activates the respective function on both decks at the
same time. The ll and O buttons on deck A are disabled during
Simultaneous Recording.
Recording on Both Decks
“in Succession
—Relay Recording
Inserting a Blank Space
during Recording
The Relay Recording function can be used to make a
continuous recording that starts on a cassette in deck A and
ends on a cassette in deck B.
1 Insert cassettes for recording into both decks.
2 Select the Dolby NR setting.
3 Set the direction mode to RELAY.
4 Place deck A into recording
pause mode. REC
5 Play the program source to be recorded.
6 Adjust the recording level and balance.
(See pages 11 and 12.)
7 Start recording on deck A.
To record on the front side of the cassette
WhenE>=>isan Press i» once or lll.
When<Jison Press I» twice.
To recard on the reverse side of the cassette
When <Jis on Press = once or.
WhenL>ison Press «fl twice.
To stop Relay Recording,
Press the IN button on the deck which is recording.
—Record Muting
The Record Muting function allows you to insert a four-
second blank to enable proper AMS operation (see page
10 ), and to replace unwanted input with a blank of any
desired length.
1 While recording, press O and release it
` [4 a
no incoming signals are recorded on the tape.
After four seconds, the IN indicator lights up and the
unit enters recording pause mode.
The indicator starts to blink. During this time,
2 Resume recording.
To create a blank longer than four seconds,
Press the O button for the desired length of time.
After four seconds, the indicator blinks with greater
rapidity. When you release the O button, the Il indicator
lights up and the deck goes into recording pause mode.
Press the IN button to resume recording.
Dubbing a Tape
High-speed dubbing allows you to dub a tape in deck A to a
tape in deck B without making adjustments. High speed
dubbing is convenient for dubbing entire tapes while normal-
speed dubbing is handy for tape editing.
12 3 1
1 Insert cassettes.
Recorded tape
Blank tape
2) Xe
Shee Zu ——
One side DIR
— CP RELAY Dubbing of the
MODE reverse side starts
mp <= independently of
deck A.
Both sides
Dubbing of the
reverse side starts
simultaneously with
deck A.
3 Select the dubbing speed.
— —
4 Select the side on which to start dubbing.
From the front side
From the reverse side
5 Start dubbing.
To stop dubbing
During normal-speed dubbing, press the ll button on deck
During high-speed dubbing, press the ll button on either
deck A or B.
During high-speed dubbing
Only the M button is operative.
If the NORMAL or HIGH SPEED indicator blinks three times
Either ane or both tabs of the cassette inserted into deck B have
been removed, making dubbing impossible for that side. Cover the
slot(s) with tape (see page 13).
Is it necessary to adjust the recording level and select the
Dolby NR system?
It is unnecessary since the tape in deck B is automatically recorded
with the same recording level and Dolby noise reduction system as
the origina! in deck A.
The Dolby system must, however, be set to match the tape in deck
A when the sound is monitored during normal-speed dubbing .
Using the Blank Skip function during tape dubbing
Pressing the BLANK SKIP button will activate the Blank Skip
function and turn on the BLANK SKIP indicator. When a blank of ten
seconds or more is encountered, dubbing will stop while the unit
fast winds to the next recorded portion, When one is found, dubbing
Notes on tape dubbing
* Do not change the dubbing speed setting during tape dubbing.
« If the sound is affected by the proximity of a television set during
high-speed dubbing, turn the television set off or move it away
from the deck.
Dubbing Only Desired
Follow the procedure below to dub only desired portions of
selections. Note that this is only possible in the normal-
speed dubbing mode.
1,2 3
1 At the start of a selection to be skipped:
Deck À enters the stop mode and deck B enters the
recording pause mode.
2 Locate the desired portion.
| | <««(АМ$) | | (AMSIP» |
e. ©
3 Resume dubbing.
Cleaning the Heads and Tape Path
Clean all surfaces over which the tape travels after every
ten hours of operation to guard against:
— low-quality sound
— a decrease in sound level
— excessive wow, flutter or drop-out
— incomplete erasure
— impairment of recording function
To obtain high-quality recorded sound, cleaning before
every recording is recommended.
1 Press the 4 button to open the cassette holder. Grasp
the front holder on both sides and gently lift to remove it.
2 With the unit turned off, wipe the heads, the pinch rollers
and the capstans with a cotton swab slightly moistened
with alcohol or a commercially available cleaning fluid for
tape decks.
| Capstans
Playback head
Erasing head
Pinch rollers
3 Replace the cassette holder.
Do not insert a cassette until the cleaned areas are
completely dry.
Demagnetizing the Heads
After 20 to 30 hours of use, or when you notice hiss and/or
loss of high trequencies, the residual magnetism built up on
the heads shouid be removed.
1 Turn off the power.
2 Demagnetize the heads with any commercially available
Refer to the instruction manual of the demagnetizer for
detailed instructions.
Cleaning the Cabinet
Clean the cabinet, panel and controls with a soft cloth
slightly moistened with a mild detergent solution.
Do not use any type of abrasive pad, scouring powder or
solvents such as alcohol or benzine.
Recording system — 4-track 2-channel stereo
Fast winding time Approx. 90 sec. (with Sony C-60 cassette)
Bias AC bias
signal-to-noise ratio (at peak level)
Dolby NR switch
Cassette OFF B-Type ON | C-Type ON
Type IV
Sony METAL-SLT) 58 dB 66 dB 73 dB
Type Il (Sony UX-S) 57 dB 65 dB 72 dB
Type | (Sony HF-S) 55 dB 63 dB 70 dB
Total harmonic distortion 1.0% (with Sony METAL-SLT cassettes)
Frequency response (DOLBY NR OFF)
Type IV cassette 30 - 15,000 Hz (+3 dB, IEC)
{Sony METAL-SLT) 130 - 13,000 Hz [#3 dB OVU(-4 dBirecording]
Type Il cassette 30 - 15.000 Hz (43 dB. |
(Sony UX-S) 5,000 Hz (+3 dB, IEC) |
Type | cassette
(Sony HF-S) 30 - 14,000 Hz (+3 dB, IEC)
Wow and flutter +0.13% W.Peak (IEC)
0.07% WRMS (NAB)
10.18% W.Peak (DIN)
Line inputs Sensitivity 77.5 mv
(phono jacks) Input impedance 47 k ohms
Line outputs Rated output level [0.32 V al a load
(phono jacks) impedance of
47 k ohms
Over 10 k ohms
Load impedance
Headphones Output level 0.3 mW at a load
(stereo phone jack) impecance of
32 ohms
Power requirements 120 V AC, 60 Hz
Power consumption 29 W
Dimensions Approx. 430 x 135 x 300 mm {w/h/d}
(17 x 5% x 117/a inches)
including projecting parts and controls
Weight Approx. 4.7 kg (10 Ibs 6 0z)
Supplied accessory Audio connecting cords (2)
Design and specifications subject to change without notice.
Troubleshooting Guide
The following trouble checks will help you correct the most common problems encountered with your tape deck.
Should any problems persist after you have made these checks, consult your nearest Sony dealer.
Before proceeding with these trouble checks, verify that:
« The power cord is firmly connected.
« Amplifier connections are firmly made.
+ Heads, capstans and pinch rollers are clean.
« The amplifier controls and switches are set correctly.
Function buttons and tape transport problems
The function buttons do not activate.
The cassette holder is not fully closed.
Close the holder completely.
The cassette is not properly inserted.
Insert cassette correctly.
Button was pressed immediately after power
was turned on.
Wait until the IN indicator stops blinking.
The @ button does not activate.
There is no cassette in the holder.
Insert a cassette.
A tab has been removed from the cassette.
Cover the slot with tape (page 13 ).
Automatic shut-off mechanism activates
before the tape comes to its end.
The tape is slack.
Take up the tape slack.
The cassette shell is deformed.
Use another cassette.
Excessively loud tape transport noise during
fast winding.
This noise is caused by the cassette and
does not signify a mechanical problem.
The 4 button does not function.
This occurs when the unit is playing back or
Press the Mor II button to stop playing back
or recording first.
Recording and playback problems
Recording or playback cannot be made or
there is a decrease in sound level.
The recording/playback and erasing heads
are either dirty or magnetized.
Clean or demagnetize the heads.
Improper connection.
Make connections properly {page 5).
Improper setting of the amplifier controls.
Set the amplifier controls to the appropriate
Excessive wow, flutter or dropout.
The head, capstan or pinch roller is dirty.
Clean in accordance with instructions (page
Incomplete erasure.
The erasing head is dirty.
Clean the erasing head.
Increased noise or poor reproduction in high
The head is magnetized.
Demagnetize the head.
Unbalanced tone in high frequencies.
Improper setting of the OU NR switch.
During playing back,set the switch to the
same position used in recording.
The unit is placed near a television set.
Move the deck away from the television set.
The desired selection cannot be located even
if you activate the AMS.
There is noise in the space between
Rerecord the tape if you can, and insert a
blank space of four seconds using the O
The space is less than four seconds long.
The > (or «<< ) button was pressed
immediately before the beginning of the
following selection.
Playback begins in the middle of a
selection when the AMS function is
The selection contains one of the following:
— along pause in the music
— a passage of low frequencies or very low
— a gradual increase or decrease in volume
While the tape is playing, press the «+4 or
DP» button again.
Hum noise.
The unit is stacked on or under the amplifier.
Separate the unit.
Noise is recorded.
The recording was made near equipment
such as a television set or a color monitor,
and interference has affected the recording
on the tape and the Dolby NR system.
Move the unit away from the television set or
color monitor.
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