TOA Electronics Microcassette Recorder AM 821 User Manual

OPERATING INSTRUCTIONS  
AM-821  
SPOT ANNOUNCING MACHINE  
WARNING (120V MODEL ONLY)  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection  
against harmful interference when the equipment is operated in a commercial environment. This  
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instruction manual, may cause harmful interference to radio communications.  
Operation of this equipment in a residential area is likely to cause harmful interference in which case  
the user will be required to correct the interference at his own expense.  
TOA Corporation  
 
PRECAUTIONS  
1. Avoid setting up unit in the locations exposed to direct sunlight, or heaters or other heat sources, or with  
high humidity or dust.  
2. The cassette tape can last only 200 hours on average. After 200 hours of use, replace the tape with the  
new one.  
3. Do not use the C-120 cassette tape. (You may use other normal tapes.)  
USER CARE  
1. CLEANING THE HEAD SECTION  
If the head, capstan or pinch roller gets dirty or accumulates dust, the deterioration of the sound quality or  
unstable operation will result. An occasional wiping down with soft cloth damped with alcohol is  
recommended to keep unit in good shape.  
2. DEMAGNETIZING THE HEAD  
The recording head becomes magnetized when the recorder is used for prolonged periods of time. This  
results in noise being generated and the treble dropping off during recording. So, the recording head  
should be regularly demagnetized with the head eraser.  
3. HANDLING CASSETTE TAPES  
The AM-821 can accept normal tape only. Do not use chrome or metal tapes to avoid loss of sound  
quality.  
Do not use the C-120 cassette tape. Since the it is thin and easily damaged, they may stretch during use  
causing unstable tape movement which may result in the tape becoming tagled in the rotating parts of  
this unit.  
Do not use tapes which have been stored in a hot moist place or close to a television or speaker. Such  
tapes may curl or have greasy places altering tape speed and preventing proper tape performance.  
Always store in a cool, dry place which is free from dirt, oil and magnetic effects.  
Before using a tape, check to confirm if tape slack exists. Because the tape slack causes the tape twist  
or tangle around the pinch rollers and capstans, take up the slack, if necessary, by inserting a pencil  
through the reel hub and turning it.  
To prevent erasing of recorded sounds, remove the erase-prevention tabs using a screwdriver or similar  
object to break out the tab (thus preventing recording). To record again, cover the slot with adhesive  
tape.  
The cassette tape can last only 200 hours on average. After 200 hours of use, replace the tape with the  
new one.  
4. CLEANING THE FRONT PANEL  
Use a soft cloth to wipe off dust and grease of the front panel and cassette receptacle covers. When they  
are very dirty, damp the soft cloth slightly with neutral cleanser, remove the dirt and wipe with a dry cloth.  
Never use volatile spirits like thinners, benzines or alcohol because they will damage the panel's finish.  
5. Avoid setting up the recorder in the locations exposed to direct sunlight, or near heaters or other heat  
sources, or in areas of high humidity or dust.  
— 3 —  
 
PART DESCRIPTION  
POWER SWITCH  
MESSAGE COUNTER  
Place this switch in the ON position and power is  
supplied.  
This indicates the message number while its  
announcement is being made. The message number  
to follow next is indicated when the tape motion stops.  
Note : When not loading the tape :  
The auto switch  
is placed in the manual  
TAPE DECK CONTROLS and LED INDICATIONS  
mode.  
When loading the tape :  
Unrecorded tape  
placed in the manual mode.  
Recorded tape  
These controls function only when placing the auto  
in the manual mode.  
switch  
the auto switch  
is  
is  
Rewinds the tape at high speed.  
Advances the tape at high speed.  
Advances the tape for playback, and the  
green LED illluminates during playback.  
The tape stops travelling automatically  
after each announcement has been  
finished.  
the auto switch  
placed in the automatic mode.  
AUTO SWITCH  
When using a built-in interval timer  
timer  
or an external  
, set this switch to ON (automatic mode).  
Depress this button to stop the tape motion  
or to release the recording mode.  
Place this switch in the OFF position (manual mode)  
for the tape deck operation  
First of all, depress this button before starting  
recording. Thereafter, also depress after  
recording of each message is finished. The tape  
continues to travel for approximately 7 seconds to  
make an unrecorded sound section on the tape  
even after the recording is finished and this  
button is depressed. The red LED of this button  
flashes during tape travel and it illuminates  
instead of flashing when the tape motion stops.  
MESSAGE OMIT SELECTOR  
These selectors function only when placing the auto  
switch  
in the automatic mode. If wishing to omit  
one or more of the recorded messages (No.1 through  
No.9), depress this switch(es).  
TAPE COUNTER, RESET BUTTON  
This indicates how far the tape has travelled. Depress  
the reset button to reset the tape counter display to  
"000".  
After placing in the recording standby mode by  
depressing the REC SPACE button, depress this  
switch and record with the remote microphone  
RM-820.  
CASSETTE RECEPTACLE  
Load the cassette tape with the exposed tape face  
down, and then close lid.  
Note : Be sure to depress the eject button after the  
TIMER SWITCH  
This functions only when placing the auto switch  
auto switch  
is turned to the manual mode.  
in  
Ejecting the tape in the automatic mode may  
lead to malfunction of the deck.  
the automatic mode. Place this switch in the OFF  
position when an external timer is used.  
EJECT BUTTON  
PHONES (HEADPHONE) JACK  
Depress this button to open lid of the cassette  
receptacle. (Do not depress this button while the  
cassette tape is travelling.)  
Accomodates stereo or monaural headphone.  
Insertion of the headphone into this jack cuts line  
output out.  
Note : When inserting the headphone into this jack,  
output signal from the line out  
is not fed.  
— 4 —  
 
BGM IN SOCKET  
AC MAINS INLET  
Connects to a power cord.  
Connects to output of the background music machine.  
Note: The spot announcement or paging takes  
EARTH TERMINAL  
FUSE  
precedence of the background music.  
MIC IN SOCKET  
LINE OUT SOCKET  
Connects microphone for recording and paging. Has  
a built-in AGC circuit.  
Note: Do not use this socket when the remote  
microphone socket is used.  
Connects to input of the external amplifier.  
Make-contact is provided during tape playback and  
output signal Is fed to this socket.  
TIMER IN SOCKET  
REMOTE MIC SOCKET  
in the automatic  
in the OFF position,  
accepts make-contact of external timer and permits  
the prerecorded announcement.  
When placing the auto switch  
mode and the time switch  
Connects the optional remote microphone RM-820  
that can be remote controlled and is used for  
microphone paging and recording.  
CONNECTIONS  
— 5 —  
 
RECORDING PROCEDURE  
This Spot Announcing Machine stops tape motion by sensing the unrecorded sound section on the tape.  
Announcements may be commenced overriding the background music by detecting the recorded level.  
To ensure that your desired message is announced without fail, we suggest you keep records of the  
message numbers and their contents when recording. During recording, the recorded signals are sent out to  
the external amplifier. To prevent this, insert the headphone into the headphone jack and no signal is  
transmitted to the amplifier.  
1. Connect the microphone to the microphone input, set the microphone switch to ON and switch the power  
on.  
is placed in the manual mode.  
2. Load the tape after confirming that the auto switch  
Note : Be sure to confirm that the tape is provided with erasure prevention tabs.  
3. Depress the REC SPACE button. The tape begins  
travelling and stops in about  
7
seconds after  
producing the unrecorded sound section on the tape.  
The SPACE LED flashes (the RUN LED also  
illuminates) during tape travel and illuminates when  
the tape motion stops.  
4. Depress the REC RUN button. The RUN LED  
illuminates (the SPACE LED also illuminates) and the  
tape begins to travel to permit recording.  
(Do not make a break of longer than 4 seconds during  
recording.)  
5. Depress the REC SPACE button after recording. The tape begins travelling and stops in about 7 seconds  
after producing the unrecorded sound section on the tape. The SPACE LED flashes (the RUN LED also  
illuminates) during tape travel and illuminates when the tape motion stops.  
6. Repeat the procedure of Item steps 4 through 5 for further recording. After all messages have been  
recorded, make more than three unrecorded sound sections on the tape by depressing the REC SPACE  
button three times. (This is necessary for automatic tape rewinding.)  
7. Depress the stop button to release the recording mode.  
The built-in AGC circuit keeps recording level constant. When using the microphone of very low sensitivity,  
the recording level becomes low. In this event, recording should be made with the mouth closer to the  
microphone, or replace the microphone by one with higher sensitivity.  
— 6 —  
 
COMPLETED TAPE AFTER RECORDING PROCEDURE  
REC  
REC  
REC  
SPACE  
REC  
RUN  
REC  
SPACE  
REC  
RUN  
REC  
SPACE  
REC  
RUN  
REC  
SPACE  
RECORDIN G  
OPERATIO N SPACE  
BUTTON  
REC  
REC  
RUN  
STOP  
SPACE SPACE  
TAPE  
HEA D  
MESSAGE #1  
UNRECORDED  
MESSAGE #2  
LAST MESSAGE  
SOUND SECTION  
AUT O  
STOP  
AUTO  
STOP  
AUTO  
STOP  
AUT O  
STOP  
PLAY BACK  
PLAY BACK  
PLAY BACK  
AUTOMATIC  
PLAYBACK  
ACTIVATIO N BY TIMER  
AUTO  
STOP  
AUTO  
STOP  
AUTOMATIC REWINDING  
CONFIRMATION OF RECORDING  
To ensure that the recorded message can be annnounced properly, confirm if  
(A) the number appearing on message counter display is in agreement with the indexing number for the  
announced message. Be sure to always start operation from the beginning of the tape after initial  
automatic tape rewinding as the number indicated on message counter display does not always  
correspond to the announced message after Fast Forward or Rewind facility has been used.  
(B) the tape motion does not stop during announcement due to a long break made during recording.  
(C) the recorded level is adequate enough to override the background music.  
(D) the tape is provided with the unrecorded sound section that is sufficient for automatic tape rewinding  
after all messages have been announced.  
1. Switch the power on.  
2. Place the auto switch  
on message counter display.)  
in the manual mode, load the recorded tape and rewind it. (The "1" is indicated  
3. Depress the PLAY  
button. The tape begins travelling to play message No.1. In this event, confirm that  
the announcement overrides the background music. The tape motion stops automatically after the  
announcement of message No.1 is finished and "2" appears on message counter display, restoring the  
background music.  
4. Repeat the procedure of step 3 and check the recording situation as well as Items (A) through (C).  
5. After all announcements have been finished, again depress the PLAY  
unrecorded sound section continues to travel for longer than 20 seconds.  
button to confirm that the  
— 7 —  
 
AUTOMATIC PLAYBACK PROCEDURE  
Automatic playback  
1. Switch the power on. (When the recorded tape is already loaded in the deck, the tape is automatically  
rewound, and the auto switch  
is placed in the automatic mode.)  
to place in the automatic mode.  
2. Load the tape and depress the auto switch  
3. You can omit any of the messages from No.1 through No.9. Depress the message omit selector for the  
message(s) you wish to omit.  
4. When the built-in timer is used for automatic announcements, set the timer switch at the required time  
interval. Place the timer switch in the OFF position when the external timer is used.  
Manual playback  
1. Switch the power on. (When the recorded tape is already loaded in the deck, the tape is automatically  
rewound, and is placed in the automatic mode. Make sure to depress the auto switch  
manual mode.)  
to place in the  
2. Load the tape.  
3. Select the tape deck control button (RWD, F.F. or PLAY).  
MICROPHONE PAGING AND ORDER OF PRIORITY  
1. A microphone connected to the AM-821 can be used for recording and direct paging. Placing the  
microphone switch in the ON position enables you to make the microphone paging when the power is  
being fed to the AM-821. The built-in AGC circuit releases you from work to adjust the sound volume  
frequency.  
2. The AM-821 is designed to allow the microphone paging to have the highest priority, overriding the  
background music and tape playback. Several seconds after the microphone paging is restored. When no  
microphone paging is being made, the pre-recorded announcement takes precedence of the background  
music.  
Caution : Be sure to place the microphone switch in the OFF position after the microphone paging has  
been finished.  
— 8 —  
 
TROUBLE-SHOOTING  
Check the following points before you think there is a failure.  
Are the remote microphone and other equipment properly connected to the AM-821 ?  
Is a power cord not plugged in ?  
Are switches and volume controls placed in the right position ?  
CAUSE  
REMEDY  
SYMPTON  
A tape is loaded improperly.  
Control buttons are pushed while the  
auto switch is set to ON.  
Remove a tape and load properly.  
Set the auto switch to OFF.  
A tape does not travel.  
The auto switch is set to OFF and  
cassette tape motion is not activated  
by the external timer.  
Set the auto switch to ON when the  
external timer is used.  
Connect a cord correctly.  
Detach a headphone plug.  
Set the microphone switch to OFF.  
Output cord is connected improperly.  
A headphone plug is inserted.  
A microphone picks up surrounding  
noise.  
No output signal is  
delivered.  
Cannot record.  
Tape's erasure prevention tab has  
been broken off.  
A Head is dirty.  
Replace a tape or cover a tab  
opening with adhesive tape.  
Clean a head.  
A microphone is connected  
improperly.  
Connect a microphone correctly.  
A Head is dirty.  
Clean a head.  
High frequencies are  
weak.  
Sound is unsteady.  
Excessive noise.  
A Head is magnetized.  
A capstan is dirty.  
A tape is old.  
Demagnetize a head.  
Clean a capstan and a pinch roller.  
Replace a tape.  
A tape does not stop  
automatically.  
Noise is high in unrecorded sound  
section.  
Record again.  
Period of time of unrecorded sound  
section is short.  
A tape is not rewound  
automatically.  
Noise is high in unrecorded sound  
section.  
Record again.  
Period of time of unrecorded sound  
section is short.  
The auto switch is set to OFF.  
Set the auto switch to ON.  
Paging through a  
microphone does not take  
precedence.  
Microphone output level is too low.  
Use a microphone with high  
sensitivity.  
Pre-recorded message  
does not take precedence  
of background music.  
Recording level is too low.  
Record again by using a  
microphone with high sensitivity.  
Clean a head.  
A Head is dirty.  
A tape is old.  
Replace a tape and record again.  
— 9 —  
 
SPECIFICATIONS  
Power Requirements  
Outputs  
AC Mains, 50/60 Hz 14 V A MAX  
LINE  
: +2dBm 600 balanced  
PHONE : stereo or monaural headphone  
–60dBm  
–60dBV  
+ 2dBm  
balanced  
unbalanced  
balanced  
Inputs  
MIC  
REMOTE MIC  
BGM  
Frequency Response  
100~15,000Hz 3dB  
100~ 7,000Hz 3dB  
MIC  
TAPE  
Distortion  
S/N  
less than 2% at 1 kHz  
less than 3% at 1 kHz  
MIC  
TAPE  
better than 55dB  
better than 50dB  
MIC  
TAPE  
Usable Tape  
Compact cassette normal tape  
Less than 0.3% WRMS  
Wow and Flutter  
Control Terminals  
Input jack for external timer-accepts signal pulse with no voltage  
Output for muting-make contact with no voltage  
2, 5, 15, 20 minutes and OFF (switchable)  
Message No.1 through No.9  
1 through 99  
Interval Timer  
Omissible Message  
Mesage Number Indication  
Dimensions (W x H x D)  
Weight  
433.5 x 140.2 x 336.3 mm [17.07 x 5.52 x 13.24 in.]  
6.5kg[14.3lb.]  
Specifications are subject to change without notice.  
Accessories (120V MODEL ONLY)  
Fuse (250 V 0.3 A)  
DIN Plug (5P)  
1
3
— 10 —  
 
DIMENSIONS (mm)  
— 11 —  
 
TOA Corporation  
KOBE, JAPAN  
133-12-063-50  
 

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