OPERATING INSTRUCTIONS
SPOT ANNOUNCING MACHINE
AM-821
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
CONTENTS
GENERAL DESCRIPTION
FEATURES
PRECAUTIONS
USER CARE
PART DESCRIPTION
CONNECTIONS
RECORDING PROCEDURE
CONFIRMATION OF RECORDING
AUTOMATIC PLAYBACK PROCEDURE
MICROPHONE PAGING AND ORDER OF PRIORITY
TROUBLE-SHOOTING
SPECIFICATIONS
DIMENSIONS
2
2
3
3
4
5
6
7
8
8
9
10
11
GENERAL DESCRIPTION
The TOA AM-821 fully automatic spot announcing machine is designed for use where recorded tape
messages are required to be repeated at specific time intervals or on command during background music
play. Instant live announcements may also be made. Designed for easy operation using normal cassette
tape. Unrecorded sound section necessary for automatic playback can be easily made in the tape. Also, the
built-in AGC keeps output levels constant and you can turn out message tapes for yourselves. You can skip
unneccessary messages between the first and the ninth message if you wish.
The AM-821 has a built-in timer for distributing the message at prearranged intervals. The message tape may
also be played at specific time intervals by using an external timer.
The microphone may be used for both recording and paging. Paging level can be kept constant by the built-in
AGC.
Remote control of the cassette operation during recording is possible with the RM-820 optinal remote
microphone.
Fitted with an input terminal for background music and the announcement takes precedence of the
background music.
Can be mounted on the 19" rack cabinet with the help of optional mounting brackets.
FEATURES
1. Permits any normal type of cassette tape
2. Priority function overriding BGM
3. Message omit selectors
4. Built-in interval timer
5. Built-in AGC circuit
6. Balanced, transformer isolated output
7. Rack mountable with optional brackets
— 2 —— 2 —
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
Place this switch in the ON position and power is
supplied.
Note : When not loading the tape :
The auto switch
is placed in the manual
mode.
When loading the tape :
Unrecorded tape
placed in the manual mode.
Recorded tape
placed in the automatic mode.
AUTO SWITCH
When using a built-in interval timer
timer
Place this switch in the OFF position (manual mode)
for the tape deck operation
MESSAGE OMIT SELECTOR
These selectors function only when placing the auto
switch
, set this switch to ON (automatic mode).
in the automatic mode. If wishing to omit
the auto switch
the auto switch
or an external
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".
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
auto switch
is turned to the manual mode.
Ejecting the tape in the automatic mode may
lead to malfunction of the deck.
MESSAGE COUNTER
This indicates the message number while its
announcement is being made. The message number
to follow next is indicated when the tape motion stops.
TAPE DECK CONTROLS and LED INDICATIONS
These controls function only when placing the auto
switch
is
is
in the manual mode.
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.
Depress this button to stop the tape motion
or to release the recording mode.
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.
After placing in the recording standby mode by
depressing the REC SPACE button, depress this
switch and record with the remote microphone
RM-820.
TIMER SWITCH
This functions only when placing the auto switch
in
the automatic mode. Place this switch in the OFF
position when an external timer is used.
EJECT BUTTON
Depress this button to open lid of the cassette
receptacle. (Do not depress this button while the
cassette tape is travelling.)
— 4 —
PHONES (HEADPHONE) JACK
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.
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