14-1164.fm Page 1 Wednesday, November 25, 1998 1:20 PM
Cat. No. 14-1164
OWNER’S MANUAL
Please read before using this equipment.
Micro-37
Voice-Activated
Microcassette Tape
Recorder
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FEATURES
Your Optimus Micro-37 Voice-Activated
Microcassette Tape Recorder is ideal for
quick note-taking. Its ultra-small size
makes it easy to slip into a pocket or briefcase. You can use it at school, at business
conferences, for dictation in the office, or
anywhere on t he go! You c an start recording manually or set the recorder so sound
activates recording.
Your recorder includes these features:
Voice-Activation Circuitry (VOX) — be-
gins recording when the recorder picks up
sound and stops a few seconds after the
sound stops.
Tape Counter with Reset Button — lets
you mark the locations of certain sections
of tape so you can easily return to them.
Built-In Microphone and Speaker — let
you record and play back notes anyw he re.
1997, 1998 Tandy Corporation.
©
All Rights Reserved.
Optimus and RadioShac k are regist ere d
trademarks used by Tandy Corporation.
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External Microphone Jack — lets you
use an external microphone, so you can
extend your recording r ange.
Earphone Jack — lets you use an optiona l
earphone to listen to a tape privately.
Quick Record — lets you instantly change
from playback to record.
Tape Speed Switch — lets you record at
normal or slow speed. Slow speed gives
you twice the normal recording time.
Fast Play — lets you play a tape back
about 25% faster than normal speed, to
save time when listening to a tape.
Auto Stop — stops automa ticall y wh en the
tape reaches the end during recording and
playback.
Automatic Level Control (ALC) Circuit
— automatically sets the rec ordi ng lev el .
Power Options — let you power the re-
corder from internal batteries, AC power
(with an optional AC adapter), or vehicle
battery power (with an optional DC adapter).
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We recommen d you write your recor der’s
serial number here. The number is inside
the recorder’s battery compartment.
Serial Number: ____________
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CONTENTS
Preparation ............................................ 6
Before You Begin ............................. 6
Connecting to Power ....................... 6
Using Batteries ......................... 7
Using AC Power ..................... 10
Using Vehicle Battery Power .. 12
Connecting an Earphone .............. 14
Listening Safel y ...................... 15
Traffic Safety ........................... 15
Connecting an External
Microphone .................................... 16
Operation ............................................. 17
Loading a Microcassette Tape ....... 17
Recording ...................................... 19
Playing a Tape ............................... 23
Rewinding/Fast-Forwarding .... 24
Quick Record ................................. 25
Using the Tape Counter ................. 26
Tape Tips ............................................. 27
Storing Cassette Tapes ................. 27
Preventing Accidental Erasure ...... 27
Erasing a Cassette Tape ............... 28
Care ...................................................... 29
Cleaning the Tape-Handling
Parts .............................................. 30
Specifications ..................................... 32
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PREPARATION
BEFORE YOU BEGIN
To protect the Micro-37 during shipment, a
piece of paper is attached to the cassette
door. Remove this paper before you use
the Micro-37.
CONNECTING TO POWER
You can power your Micro-37 from any of
the following:
• Internal battery power
• AC power (with an optional AC
adapter)
• Your vehicle’s batter y (wi th an optio nal
DC adapter)
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Using Batteries
You can use two AA batteries (not supplied) to power your Micro-37. We recommend alkaline batteries, such as RadioShack Cat. No. 23-552.
Cautions:
• Use only fresh batteries of the
required size and recommended type.
• Never leave dead or weak batteries in
the Micro-37. Batteries ca n leak c hemicals that can destroy electronic circuits.
• Do not mix old and new batteries, dif-
ferent types of batteries (standard,
alkaline, or rechargeable), or rechargeable batteries of different
capacities.
• Dispose of old batteries promptly; do
not bury or burn them.
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Follow these steps to install batteries.
1. Slide the battery compartment cov er in
the direction of the arrow until it stops,
then lift up the cover.
CUE
FF
Caution: The battery compartment
cover is attached to the recorder. Do
not try to remove it.
2. Insert the batteries into the compartment as indicated by the polarity symbols (+ and –) marked inside the
compartment.
CUE
FF
3. Close the battery compartment cover
by pressing it down and sliding it in the
opposite direction of the arrow.
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Notes:
• If the record/battery indicator to the
right of the
jack does not light or
EAR
lights dimly during manual recording,
replace th e batteries.
• If you do not plan to use the Micro-37
for several days, or if you plan to use
only AC or vehicle battery power,
remove the batteries.
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Using AC Power
To power the Micro-37 from an AC outlet,
you need an AC adapter (not supplied),
such as Cat. No. 273-1654B.
Cautions:
• You must us e an AC ad apte r t hat s upplies 3 volts DC p ower and deli vers at
least 200 milliamps. The center tip of
the adapter barrel plug must be set to
positive, and the plug must properly fit
the Micro-37’s
mended AC adapter meets these
specifications. Using an AC adapter
that does not meet these specifications could damage the Micro-37, the
AC adapter, or the plug.
• Always connect the AC adapter to the
Micro-37 before you plug it into the AC
outlet, and unplug the adapter from
the AC outlet before you unplug it from
the Micro-37.
jack. The recom-
DC3V
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Follow these steps to power the Micro-37
from standard AC power.
MIC
DC3V
RadioSnack
1. Set the AC adapter’s voltage switch to
3V.
2. Attach the 2.35 mm outer diameter/0.7
mm inner di ameter barrel plug to the
AC adapter’s cord with the tip set to
positive (+).
3. Insert the barrel plug into the Micro-
DC3V jack. This disconnects inter-
37’s
nal batteries.
4. Plug the other end of the AC adapter
into a standard AC outlet.
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Using Vehicle Battery Power
To power the Micro-37 from your vehicle’s
battery, you need a DC adapter (not supplied), such as Cat. No. 270-1560.
Cautions:
• You must us e a DC adapter that supplies 3 volts DC p ower and deli vers at
least 200 milliamps. The center tip of
its barrel plug must be set to positive,
and the plug must properly fit the
Micro-37’s
mended DC adapter meets these
specifications. Using a DC adapter
that does not meet these specifications could damage the Micro-37 or
the DC adapter.
• Always plug the DC adapter into the
Micro-37 before you plug it into the
cigarette-lighter socket, and unplug
the adapter from the cigarette-lighter
socket before you unplug it from the
Micro-37.
jack. The recom-
DC3V
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Follow these steps to power the Micro-37
from your vehicle’s battery.
MIC
DC3V
1. Set the DC adapter’s voltage switch to
3V.
2. Attach the 2.35 mm outer diameter/0.7
mm inner diameter barrel plug w ith the
tip set to positive (+).
3. Insert the barrel plug into the Micro-
DC3V jack. This disconnects the
37’s
internal batteries.
4. Plug the other end of the DC adapter
into the vehicle’s cigarette-lighter
socket.
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CONNECTING AN
EARPHONE
You can use an optional mono earphone
with a submini (
tape in privacy.
Notes:
• You can also use a n e arphone to mo nitor what the recorder picks up through
the internal microphone or an external
microphone.
• Your local RadioShack store carries a
wide selection of earphones.
Insert the earphone’s plug into the recorder’s
EAR
matically disconnects.
3
/32-inch) pl ug to li sten to a
jack. The built-in speaker auto-
EAR
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Listening Safely
To protect your hearing, follow these
guidelines when you use an earphone.
• Set the volume to the lowest setting
before you begin listening. After you
begin listening, adjust the volume to a
comfortable listening level.
• Do not listen at extremely high volume
levels. Extended high-volume listening
can lead to permanent hearing loss.
• Once you set the volume, do not
increase it. Over time, your ears adapt
to the volume level, so a volum e level
that does not cause discomfort might
still damage your hearing.
Traffic Safety
Do not wear an earp hon e w h ile op erating a
motor vehicl e or riding a bicycle. This c an
create a traffic hazard and could be illegal
in some areas.
Even though some earphones let you hear
outside sounds when listening at normal
volume leve ls, the y still can pres ent a tr affic hazard.
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CONNECTING AN
EXTERNAL MICROPHONE
You can use an optio nal m icro ph one w ith a
3
submini (
/32-inch) plug to extend the recording range. Your local RadioShack
store carries a wide selection of microphones.
Insert the microphone’s plug into the recorder’s
jack. The built-in microphone
MIC
automatically disconnects.
NORMAL F.PLAY
SPEED
2.4 1.2MIC SENS VOX
DC3V
MIC
MIC Jack
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OPERATION
LOADING A
MICROCASSETTE TAPE
Note: We recommend MC-60 microcas-
sette tapes for up to 2 hours of recording/
playback time, or MC-90 microcassette
tapes for up to 3 hours of recording/playback time.
Follow these steps to load a microcassette
tape.
1. Use a pencil to turn the cassette’s hub
and remove any tape slack. Avoid
touching the tape.
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2. Lift the latch to open th e cass ette co mpartment door.
Latch
1 2 3
VOICE ACTIVATION
2 SPEED
MICRO-37
MICROCASSETTE
RECORDER
3. Insert the microcassette into the door’s
guides so the microcassette’s open
edge faces out.
VOICE ACTIVATION
2 SPEED
MICRO-37
MICROCASSETTE
RECORDER
Note: An arrow on the cassette compartment shows the tape travel direction. Be sure the tape’s full reel is in
the opposite direction from the arrow.
4. Close the door.
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RECORDING
You can record manually or use voice-activated recording. When you use the voice
activating feature, recording begins when
the recorder picks up sound and stops a
few seconds after the sound stops.
Follow these steps to record.
1. Load the microcassette tape.
2. Set
as follows:
on the side of t he reco rder
SPEED
MIC
DC3V
SPEEDNORMAL F.PLAY
2.4 1.2MIC SENS VOX
• To double the tape’s recording/play-
to
back time, set
SPEED
1.2
. This
setting allows 120 minutes of total
recording/playback time on an MC60 tape, or 18 0 minutes on an M C90 tape.
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• For better sound quality, set SPEED
to 2.4. This setting allows 60 minutes of total recording/playback
time on an MC-60 tape, or 90 minutes on an MC-90 tape.
MIC SENS/VOX as follows:
3. Set
MIC
DC3V
SPEEDNORMAL F.PLAY
2.4 1.2MIC SENS VOX
• To manual ly star t and stop recording, set MIC SENS/VOX to MIC SENS.
• To use voice-activated recording,
MIC SENS/VOX to VOX.
set
Note:
The voice-activated feature
saves power and tape if there are long
or frequent pauses in the material you
are recording.
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4. Press REC to begin recording. Both
REC and PLAY lock down, and the
record/battery indicator to the right of
the EAR jack lights.
REV
REW
VOICE ACTIVATION
2 SPEED
MICRO-36
MIC SENS/VOX is set to MIC SENS,
If
recording begins immediately. If
SENS/VOX
is set to VOX, recording
MIC
begins and the re co rd/b atte ry indi ca tor
lights steadily only when the recorder
picks up sound.
Caution:
• To prot ect the recorder, press
REC
only when a microcassette tape is
loaded.
• Do not force down
not easily press
REC. If you can-
REC, check the
microcassette tape’s eraseprotection tabs (see “Preventing
Accidental Erasure” on Page 27).
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Note: To pause recording, slide
PAUSE/OFF
recording, slide
5. If you set
VOLUME
to
PAUSE/OFF
MIC SENS/VOX
to set the sound level at
PAUSE
. To resume
to
.
OFF
to
, adjust
VOX
which recording begins. The higher
the
VOLUME
sound level needed to start
setting, the lower the
VOX
recording.
If you set
adjust
VOLUME
MIC SENS/VOX
to set the desired
to
MIC SENS
,
monitoring sound le vel.
6. Press
to stop the tape.
STOP
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PLAYING A TAPE
1. Load the microcassette tape.
2. Set
the tape was recorded.
3. To listen to the tape at normal speed,
set
NORMAL/F.PLAY
To listen to the tape at about 25%
faster than normal speed, set
MAL/F.PLAY
to the speed used when
SPEED
to
to
F.PLAY
.
NORMAL
.
NOR-
4. Press
PLAY
MIC
DC3V
SPEEDNORMAL F.PLAY
2.4 1.2MIC SENS VOX
.
REV
REW
FF
CUE
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5. Adjust VOLUME to a comfortable listening level.
6. Press STOP to stop playback.
Rewinding/Fast-Forwarding
REV
REW
FF
CUE
Slide REV REW/FF CUE to REV REW to rapidly rewind a tape, or to
FF CUE to fast-for-
ward a tape.
To slide
REV REW/FF CUE to the desired
position, press the side of the switch opposite the side marked with the desired direction.
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Caution: To protect the tape-handling
parts, press
to the center when the tape reaches
CUE
STOP
or slide
REV REW/FF
the end.
If you slide
or
FF CUE
REV REW/FF CUE
during playback, you can hear
to
REV REW
the tape at a faster speed as it fast-forwards or rewinds. When you release the
switch, the recorder resumes normal playback.
QUICK RECORD
During playback, you can press
directly to re cor ding w ith out press ing
first.
REC
to go
STOP
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USING THE TAPE
COUNTER
You can use the tape counter to mark locations of specifi c sec tio ns of ta pe so you ca n
easily return to them.
Reset
Button
VOICE ACTIVATION
2 SPEED
Press the reset button next to the tape
counter to set the co unter to
ginning of a tape. As the tape plays or
records, note the counter reading at the
position(s) to which you want to return.
1 2 3
000 at the be-
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TAPE TIPS
STORING CASSETTE
TAPES
Do not expose microcassette tapes to high
temperatures, high humi dity, dust or dirt, or
motors, transformers, or other sources with
strong magnetic fields.
PREVENTING ACCIDENT AL
ERASURE
Most microcassette tapes have an eraseprotection tab for each side of the tape. To
protect your recordings from being accidentally erased or recorded over, use a
screwdriver to carefull y break off the e raseprotection tabs.
Side A Tab
If you later decide to erase or record over
the tape, place a piece of strong tape over
the holes.
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Caution: Removing the erase-protection
tabs does not prevent a tape from being
erased by a bulk tape eraser.
ERASING A CASSETTE
TAPE
If you no longer w ant a reco rding, yo u can
record ove r it or erase it.
To record over a microcassette tape, be
sure the erase-protection tabs are in place.
Then simply record as usual. The recorder
records over the previous recording.
You might prefer to use a bulk tape eraser,
such as Cat. No. 44-232, which erases
both sides of a tape in just a few seconds.
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CARE
Your Optimus Micro-37 Voice-Activated
Microcassette Tape Recorder is an example of superior design and craftsmanship.
The following suggestions will help you
care for your recorder so you can enjoy it
for years.
• Keep the recorder dry. If it gets wet,
wipe it dry immediately. Liquids can
contain minerals that can corrode the
electronic circuits.
• Handle the recorder gently and care-
fully. Dropping it can damage circuit
boards and cases and can cause the
recorder to work improperly.
• Use and store th e re co rder onl y in nor-
mal temperature environments. Temperature extremes can shorten the life
of electronic devices, damage batteries, and distort or melt plastic parts.
• Keep the recorder away from dust and
dirt, which can cause premature wear
of parts.
• Wipe the recorder with a damp cloth
occasionally to k e ep it look ing new. Do
not use harsh chemical s, c le an i ng s ol vents, or strong detergents to clean it.
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Modifying or tampering with the recorder’s
internal components can cause a malfunction and might invalidate the recorder’s
warranty. I f your recorder is no t operating
as it should, take it to your local RadioShack store for assistance.
CLEANING THE
TAPE-HANDLING PARTS
Dirt, dust, or partic les of the t ape’s coa ting
can accumulate on the tape heads and
other parts that the tape touches. This can
greatly reduce the performance of the recorder. Use the following cleaning procedure after every 20 hours of recorder
operation.
1. Press
disconnect any other power source.
2. Press
dling parts.
, remove the batteries, and
STOP
to expose the tape-han-
PLAY
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3. Use a cotton swab dipped in tape
head cleaning solution or denatured
alcohol to gently clean the record/playback head, pinch roller, capstan and
tape guides.
Tape Guides
Record/Playback Head
2 SPEED
MICRO-37
MICROCASSETTE
RECORDER
VOICE ACTIVATION
Pinch Roller
4. Press
STOP to release the tape-han-
Capstan
dling parts. Then close the cassette
compartment cover and reconnect
power.
Note:
For easier cleaning, you can use a
microcassette cleaner kit, which includes a
special cleaning cassette. Your local RadioShack store carries a full line of cassette deck cleaning supplies.
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SPECIFICATIONS
Tape Type ........................... Microcassette
Tracks ........ 2 Tracks, 1 Channel Monaural
Drive System ..................... Capstan Drive
Tape Speed ... 2.4 cm/sec. (15/16 ips) and
1.2 cm/sec. (15/32 ips)
Recording Time
(with MC-60 Microcassette):
2.4 cm/sec. ............... 30 min. per side
1.2 cm/sec. ............... 60 min. per side
Practical Max. Output .................. 200 mW
Frequency Response ......... 400–4,000 Hz
at 2.4 cm/sec.
Fast Play:
2.4 cm/sec. ............................... +25%
1.2 cm/sec. ............................... +30%
Microphone Sensitivity ........... Continuous
Adjustment Using
in Record Mode
Power Sources:
Internal Batteries ............. 3 Volts DC,
Two AA Batteries
AC Power ....... 120V with AC Adapter
(Cat. No. 273-1654)
VOLUME
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Vehicle Battery ............... 12V with DC
Adapter (Cat. No. 270-1560)
Typical Cassette Recording Time
(with Alkaline Batteries) ............. 17 Hours
Dimensions (HWD) ....... 4.8 × 2.5 × 0.9 in.
(122 × 64 × 24 mm)
Weight (with batteries) ....... 5.6 oz. (160 g)
Specifications are typical; individual units
might vary. Specifications are subject to
change and improvement without not ice.
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NOTES
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Limited Ninety-Day Warranty
This product is warrant ed by RadioSha ck again st manufacturing defects in mate rial and workm anship under
normal use for ninety (90) days from the date of purchase from RadioShack company-owned stores and
authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES
NO EXPRESS WARRANTIES AND ANY IMPLIED
WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE
DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED
HEREIN, RadioShack SHALL HAVE NO LIABILITY OR
RESPONSIBILITY TO CUSTOMER OR ANY OTHER
PERSON OR ENTITY WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR
INDIRECTLY BY USE OR PERF ORMANCE OF THE
PRODUCT OR ARISING OUT OF ANY BREACH OF
THIS WARRANTY, INCLUDING, BUT NOT LIMITED
TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
EVEN IF RadioShack HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an
implied warranty lasts or the exclusion of incidental or
consequential damages, so the above limitati ons or exclusions may not apply to you.
In the event of a product defect during the warranty period, take the product and the RadioShack sales receipt
as proof of pu r c ha s e dat e to any RadioS hack store . R a dioShack will, at its option, unless otherwise provided
by law: (a) correct the defect by product re pair without
charge for parts and labo r ; (b) replace the pr oduct with
one of the same or similar design; or (c) refund the purchase price. All repl a ced pa rts and produ cts, and pr oducts on which a refund is made, become the property of
RadioShack.
(Continued)
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(Continued)
may be used in the performance of warranty service.
Repaired or replac ed p arts and produ cts are warranted
for the remainder of the original warranty period. You
will be charged for repair or replacement of the product
made after the expiration of the warranty period.
This warranty does not cover: (a) damage or failure
caused by or attributable to acts of God, abuse, accident, misuse, improper or abnormal usage, failure to
follow instructions, improper installation or maintenance, alteration, lightnin g o r o the r in ci de nce of excess
voltage or current; (b) a ny rep airs oth er tha n those provided by a RadioShack Authorized Service Facility; (c)
consumables such as fuses or batter ies; (d) cosmetic
damage; (e) transportation, shipping or insurance
costs; or (f) costs of product removal, installation, setup service adjustment or reinstallation.
This warranty gives you specific legal rights, and you
may also have other rights which vary from state to
state.
100 Throckmorton St., Suite 600, Fort Worth, TX 76102
New or reconditioned par ts and products
RadioShack Customer Relations, Dept. W,
We Service What We Sell
3/97
A Division of Tandy Corporation
RadioShack
Fort Worth, Texas 76102
7A8 Printed in China
E2-2403-01
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