Inter-m ACR-120M User manual

Operation Manual
Compact Disc Receiver
ACR-120M

Cont nts
Cont nts
W lcom
Warning.........................................................................................................................................1
Unpacking......................................................................................................................................2
Installation
Environment....................................................................................................................................2
Important Safety Instructions.............................................................................................................2
F atur s............................................................................................................................................3
Op ration ........................................................................................................................................3
Front Pan l ......................................................................................................................................4
R ar Pan l .......................................................................................................................................7
How to Us CD / MP3 Play r .....................................................................................................9
Application of Th Ant nna.......................................................................................................12
Installation of Th Sp ak r.........................................................................................................13
Applications ..................................................................................................................................14
Block Diagram ..............................................................................................................................15
Sp cifications ................................................................................................................................16
S rvic
Proce ures....................................................................................................................................17
Schematic.....................................................................................................................................17
Parts List .......................................................................................................................................17
Variations and Options ...............................................................................................................17
Warranty .......................................................................................................................................17
COMPACT DISC RECEIVER

COMPACT DISC RECEIVER
1
ACR-120M
W lcom
W lcom
A p rsonal w lcom to you from th manag m nt and mploy s of Int r-M
All of the co-workers here at Inter-M are e icate to provi ing excellent pro ucts with inherently goo value,
an we are elighte you have purchase one of our pro ucts.
We sincerely trust this pro uct will provi e years of satisfactory service, but if anything is not to your complete
satisfaction, we will en eavor to make things right.
Welcome to Inter-M, an thank you for becoming part of our worl wi e exten e family!
* It can b h at d up if you us this product in clos d box or ill-v ntilat d plac .
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO UALIFIED SERVICE PERSONNEL.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
*Do not install this equipment in a confined space such as a book case or similar unit.
*The apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such vases, shall be placed on the apparatus.
*Worded: “WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING-WATER AND MOISTURE: Unit should not be used
near water(e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken
so than objects do not fall and liquids are not spilled into the enclosure through openings.”
Service Instructions
*Worded: "Caution: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not
perform any servicing other than that contained in the operating instructions unless you are qualified to do so."
*Location: Instruction Manual.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of suf-ficient
magnitude to constitute a risk of electric shock to
persons.
This symbol is intended to alert the user to the
presence of important operation and mainte-nance
(servicing) instructions in the literature accompanying
the appliance.
Caution: To prevent electric shock do not use this (polarized) plug with
an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade expo-sure.
Attentions: Pour prévenir les chocs électriques ne pas utiliser cette
fiche polarisée avec un prolongateur, une prise de courant
on une autre sortie de courant, sauf si les lames peuvent
étre insérées à fond sans en laisser aucune partie à
découvert.

COMPACT DISC RECEIVER
2ACR-120M
Installation
Installation
Environm nt
Never place this pro uct in an environment which coul alter its performance or re uce its service life. Such
environments usually inclu e high levels of heat, ust, moisture, an vibration.
Important Saf ty Instructions
1. Rea these instructions.
2. Keep these instructions.
3. Hee all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with ry cloth.
7. Do not block any ventilation openings. Install in accor ance with the manufacturer’s instructions.
8. Do not install near any heat sources such as ra iators, heat registers, stoves, or other apparatus (inclu ing
amplifiers) that pro uce heat.
9. Do not efeat the safety purpose of the polarize or groun ing-type plug. A polarize plug has two bla es
with one wi er than the other. A groun ing type plug has two bla es an a thir groun ing prong. The wi e
bla e or the thir prong are provi e for your safety. If the provi e plug oes not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
10. Protect the power cor from being walke on or pinche particularly at plugs, convenience receptacles, an
the point where they exit from the apparatus.
11. Only use attachments/accessories specifie by the manufacturer.
12. Use only with the cart, stan , tripo , bracket, or table specifie by the manufacturer, or sol with the apparatus.
When a cart is use , use caution when moving the cart/apparatus combination to avoi injury from tip-over.
13. Unplug this apparatus uring lightning storms or when unuse for long perio s of time.
14. Refer all servicing to qualifie service personnel. Servicing is require when the
apparatus has been amage in any way, such as power-supply cor or plug is
amage , liqui has been spille or objects have fallen into the apparatus, the
apparatus has been expose to rain or moisture, oes not operate normally, or has
been roppe .
Unpacking
Although it is neither complicate to install nor ifficult to operate your Compact Disc Receiver, a few minutes of
your time is require to rea this manual for a properly wire installation an becoming familiar with its many
features an how to use them. Please take a great care in unpacking your set an o not iscar the carton an
other packing materials. They may be nee e when moving your set an are require if it ever becomes
necessary to return your set for service.
S3125A
S3125A

COMPACT DISC RECEIVER
3
ACR-120M
F atur s
F atur s
- 120W OUTPUT POWER
These mo els can eliver very high output power at less than 1% THD.
- VERSATILE AND EASY TO USE
Incorporating all the necessary system components to provi e versatility in an easy to use form: six channels of
input signals (MIC 1~3, AUX, TUNER an CD), four tone chime, tone control an speaker impe ance selector.
- CHANNEL PRIORITY AND MUTING
MIC 1 an the four tone chime have priority over the other input signals. The muting level is a justable from the
rear panel of the unit.
- TONE CONTROL
The two ban tone control provi es ±12 B of control over the TREBLE an BASS range.
- CHIME WITH FOUR TONES
Melo ious four tone chime for pre-announcements, operation by front panel button.
- DIGITAL TUNER
Ability to store up to thirty broa casting frequencies in the system’s memory, in a simple an easy to use manner.
- 1CD/MP3
The pro uct has a built-in CDP than can play back the CD store in a MP3 file format to enable convenient
use.(Support playback of CD in CD/MP3 format.)
Op ration
Op ration
1. Before inserting the power plug to a socket, turn all switches off, put the tone control to the mi le, an the
volume to the lowest position.
2. Check if a speaker an input jack are connecte correctly.
3. Check the power source an insert a power cor to a socket.
4. Pressing a power switch starts the unit.
5. Checking the volume from an output level in icator, a just the volume with in ivi ual volume an master
volume control, an the tone with a tone control as you want.
6. For the operation of chime, CD an eck, see the relevant etail escription in the ocument.
Make certain that speakers an input sources are properly connecte before switching the unit on.
Keep volume levels turne own before switching on.
NOTE: The system’s operation is elaye by approximately three secon s after pressing the power switch. This
is ue to the built-in protection circuitry, esigne to protect the speakers an other system components.

COMPACT DISC RECEIVER
4ACR-120M
Front Pan l
Front Pan l
1. TONE CONTROLS
The tone control section provi es ±12 B of control over the TREBLE an BASS ranges at the following
frequencies (TREBLE: 10kHz, BASS: 100Hz).
2. CHIME BUTTON
Pressing this button will activate the chime circuitry.
3. MASTER LEVEL CONTROL
This control is use for a justing the volume of the finally mixe soun .
4. OUTPUT LEVEL DISPLAY
This isplay in icates the signal output level.
5. SPEAKER SELECTOR
These switches are use for internally routing the output of the amplifier to the speakers, in ivi ually or totally.
6. POWER SWITCH
Pressing the switch to ON will illuminate the power LED an supply the power to this unit.
7. AUX LEVEL CONTROL
This control a justs the volume level of the AUX input signal.
8. CD LEVEL CONTROL
This control a justs the volume level of the CD input signal.
9. MIC LEVEL CONTROL
These controls a just the volume level of the MIC 1, MIC 2 an MIC 3 input signals.
10. MIC 1 INPUT CONNECTOR
This jack be use for the MIC 1 input an is connecte in parallel with the XLR jack on the rear panel.
Input sensitivity is 1mV. The normal impe ance is 600Ω (BAL) or 10kΩ (UNBAL).

COMPACT DISC RECEIVER
5
ACR-120M
1. CD/MP3
1. DISC TRAY
The 1pc of CD/MP3 isc is inserte or ejecte at isc tray. Only use the size of 12cm isc.
2. STOP BUTTON
Depressing this button stops playback of the CD/MP3 isc.
3. PLAY/PAUSE
Depressing this button will pause CD/MP3 Playback. Depressing a secon time will resume play.
4. SCAN
Depressing this button will play the first 10 secon s of each song in sequence. Depressing again will resume normal play.
5. REPT (REPEAT)
Depress this button once to repeat the currently playing song. Depress an hol for more than one secon , to
repeat all the songs in the current MP3 irectory. Depress again to repeat all songs on the isc. Depress
again to release Repeat function.
6. RAND (RANDOM)
Depress this button to play the songs on the isc in a ran om or er. Depress again to release Ran om function.
7. LCD DISPLAY
This LCD isplay in icates the status of the CD unit.
8. EJECT
Depress this button to eject isc.
9. TRACK (REVERSE/FORWARD)
Depress this button to listen to the previous/next song on the isc.
10. DIRECTORY (REVERSE/FORWARD)
This function is available only for MP3 iscs. It allows for movement between file irectories on an MP3 isc.
Depress this button to move to the previous/next irectory.
MP3 PLAYE R STOPPLAY
PAUSE
SCANREPTRAND
EJECTTRACKDIRECTORY
CD/MP3
COMPACT DISC PLAYE R

COMPACT DISC RECEIVER
6ACR-120M
2. TUNER SECTION
1. TUNING FREQUENCY DISPLAY
You can confirm the frequency of tuner through this isplay.
2. BAND SELECT BUTTON
These switch is for selecting AM or FM, when using the tuner.
3. ADDRESS SELECT BUTTON
These switches select six memory a ress banks for the storage of broa casting frequencies. Each of these
banks can be hol five broa casting frequencies at esignate memory a ress areas, i.e., F1, F2, F3, A1
an A2. Therefore a total of thirty broa casting frequencies can be store .
4. UP/DOWN BUTTON
When the switch is momentarily presse once, the AM/FM frequency will a just with a single UP/DOWN count.
When the switch is presse continuously, the frequency is continuously fast UP/DOWN counte .
5. TUNER LEVEL CONTROL
This control a justs the volume level of the AM an FM ra io signal.
6. MEMORY BUTTON
This is for memorizing the broa casting frequency.
1. Select the memory area AM or FM with the BAND switch (2).
2. Select the frequency that you want to memorize with the UP/DOWN switch (4).
3. Press the MEMORY switch (6), then select the esire a ress with ADDRESS switch (3).
4. The present status of the tuner will be memorize in the selecte a ress.

COMPACT DISC RECEIVER
7
ACR-120M
R ar Pan l
R ar Pan l
1. FUSE HOLDER
This fuse hol er contains the AC fuse. If blown, replace it with same type fuse as specifie below. If the fuse
continuously blows, refer servicing to qualifie personnel.
2. AC INLET
This is the AC INPUT for the AC INPUT CORD.
3. ANTENNA TERMINAL
This terminals for connecting the antenna terminal, when you can use the tuner.
4. MUTE LEVEL CONTROL DURING PRIORITY CALL
When the other channel signals are mute by MIC 1 an CHIME, this control is use for a justing the muting level.
5. MIC INPUT CONNECTORS
These jacks are for MIC 1~3 input. Input sensitivity is 1mV an input impe ance balance 600Ω or
unbalance 10kΩ, is optional.
6. AUX INPUT CONNECTOR
The soun source from cassette eck etc., is connecte to this input.
7. AMP INPUT CONNECTOR
A signal processor like an equalizer or filter can be connecte to this input, using an RCA jack plug.
AC 230V-240V
1.25A/250V
MODEL
VOLTAGE
FUSE RATING
AC 100V-120V
3A/250V
ACR-120M

COMPACT DISC RECEIVER
8ACR-120M
8. PRE AMP OUTPUT CONNECTOR
The line out signal of this unit can be use for connecting to another amplifier, e.g. recor er or signal
processor etc.
9. SPEAKER TERMINAL
These terminals are for the connection to speakers. Select the 4Ω terminals or the high impe ance terminals.
Do not select both low an high impe ance terminals else overloa may occur.
10. IMPEDANCE SELECTOR
This switch is for selecting the require high impe ance at the speaker terminals.
* WARNING: For low impe ance output (4Ω), remove the jumper from the option terminals. For high
impe ance output (70V, 100V) install the jumper. Do not use both the low an high
impe ance outputs at the same time, oing so coul amage your amplifier an invali ate the
warranty.
Voltage/Impe ance
MODEL ACR-120M
100V
70V
25V
4Ω
83Ω
41Ω
5.2Ω
4Ω/21.9V