Optimus 120 2152 User Manual

AM/FM Car CD Player  
(120-2152)  
Features  
Faxback Doc. # 37643  
Your Optimus High-Power In-Dash AM/FM Stereo CD Player has many practical,  
easy-to-use features, and you can install it in almost any vehicle. The  
stereo's anti-theft control panel lets you quickly remove it, making the  
stereo inoperative.  
Memory tuning, seek and scan tuning, and FM optimizer circuitry all help  
make your stereo's operation simple and quick so you can drive safely.  
Caution:  
Use common sense. Do not change your stereo's settings in heavy  
traffic or during hazardous driving conditions.  
CD PLAYER  
Audible Search - lets you rapidly play a CD in  
either direction to locate a  
desired section of a track.  
Shuffle Play - randomly selects and plays  
tracks from the loaded CD.  
Repeat Play - automatically repeats the  
current track.  
Intro Scan - scans and plays the first  
10 seconds of each track, so you  
can find a specific track.  
AM/FM STEREO TUNER  
Memory Tuning - lets you quickly store and tune  
up to 18 of your favorite  
stations (6 AM and 12 FM).  
Auto Travel Programming - lets you automatically store the  
first 6 strong stations in each  
band (AM and FM) into a separate  
travel memory so you can quickly  
find local stations while  
traveling.  
speakers by pressing a few  
buttons, so you can tailor the  
sound to suit your preferences.  
Line-Out Jacks - make it easy to connect a  
booster.  
We urge you to record your stereo's serial number here. The number is on  
the top panel of the stereo.  
Serial Number:_________________________________  
The CD player in this stereo system is made and tested to meet exacting  
safety standards. It meets FCC requirements and complies with safety  
performance standards of the U.S. Department of Health and Human Services.  
Warnings:  
This system employs a laser light beam. Only a qualified service  
person should remove the cover or attempt to service this device, due  
to possible eye injury.  
The use of controls, adjustments, or procedures other than those  
specified herein might result in hazardous radiation exposure.  
AM/FM Car CD Player  
(120-2152)  
Installation  
Faxback Doc. # 37644  
BEFORE YOU BEGIN THE INSTALLATION  
Before you install your stereo, read all the instructions in this owner's  
manual. You should be able to answer all of these questions about your  
vehicle's electrical and sound systems.  
Which of the stereo's wires is the power wire?  
Which terminal in my vehicle's fuse box is for accessories?  
How do I connect a wire to the fuse box?  
Which stereo wires are line-level outputs and which are speaker  
outputs?  
Also, be aware that installation in your vehicle might require cutting or  
modifying your vehicle.  
Preparing the Mounting Area  
Before you mount the stereo, make sure you have all the necessary  
materials. Then confirm that the stereo fits your vehicle's mounting  
area.  
Notes:  
This autosound stereo system is a DIN-E size unit that requires a  
2 1/4 inch (57 mm) high by 7 1/2 inch (190 mm) wide by 7 1/4 inch  
(186 mm) deep mounting area.  
If the mounting area is too large, you might be able to mount the  
stereo with an in-dash installation kit, available at your local  
Radio Shack store. Follow the installation kit's instructions to  
mount the stereo.  
Cautions:  
Make sure your vehicle's mounting area is at level as possible.  
If you cannot mount the stereo exactly level, make sure the stereo  
will not tilt up more than 30 degrees when it is mounted.  
Be careful to avoid obstructions behind the mounting surface.  
Routing Speaker Wires  
If you install speakers, avoid routing the speaker wires near moving parts  
or sharp edges. You can usually route it along the wiring channel beneath  
the vehicle's door facings by carefully removing the molding that holds  
the carpet in place. After you route the speaker wires, replace the  
molding.  
Removing the Shipping Screw  
The shipping screw helps protect the stereo's CD player from being damaged  
during shipment.  
Before you mount the stereo, use a small Phillips screwdriver to remove  
the shipping screw from the top of the stereo.  
Caution:  
If you do not remove the shipping screw, you cannot remove the  
supplied sleeve from the stereo and the CD player will not work.  
Note:  
Save the shipping screw in case you ever want to mail or ship the  
stereo. You can secure it to the back of the stereo with a piece of  
tape.  
MAKING THE CONNECTIONS  
The supplied harness with the 14-pin connector includes all the lead wires  
you need to connect the stereo to ground, power, some optional components,  
and speakers.  
Important:  
Do not cut these wires. If you cut any wire, you cannot obtain a  
refund or exchange on this product. Radio Shack will provide warranty  
service if you cut a wire and find the product is defective.  
You might need additional wire, depending on your individual auto  
sound system, to complete the connections.  
Your local Radio Shack store carries a full line of wire and wire management  
accessories.  
Cautions:  
For added safety and to protect your stereo, disconnect the cable from  
your vehicle battery's negative (-) terminal before you begin.  
(new illus)  
Be sure your speakers can handle 32 watts of power  
(16 watts power channel). Each speaker must have an impedance  
of at least 4 ohms. Your local Radio Shack store carries a full  
line of speakers.  
You must connect the GROUND, +12V TO IGNITION, and +12V TO BATTERY  
wires first, then make all other connections as described in the  
following sections before you plug the harness with the 14-pin  
connector into the stereo. If you do not make connections in the  
order shown, damage to the stereo is possible if any wire connections  
are made incorrectly.  
You must connect a separate wire to each speaker terminal as described  
in the following procedure. Do not use a common wire or chassis  
ground for any speaker connection.  
Note:  
The wiring harness has the following labels.  
Using an Adapter Harness  
If you are replacing an existing stereo, or if your vehicle has been  
factory-wired for auto-sound components, you might be able to use an  
adapter harness to connect the power and speakers. Radio Shack stores  
sell adapter harnessers for most vehicles.  
Follow the directions that come with the adapter harness to temporarily  
connect the power and speakers.  
Connecting Ground, Power, and Optional Components  
Follow these steps to connect the harness with the 14-pin connector to  
ground, primary and memory backup power, and optional components.  
1. Disconnect the cable from your vehicle battery's negative (-)  
terminal.  
2. Connect the black ground wire to a chassis ground, such as a metal  
screw attached to a metal part of the vehicle's frame. Be sure  
that the screw is not insulated from the chassis by a plastic  
part.  
3. Connect the red power wire (with in-line fuse holder) to a point  
in your vehicle's fuse block that has power only when you turn the  
vehicle's key to either the accessory (ACC) or START position.  
This connection turns on the stereo when you turn on the ignition  
or turn the key to ACC, and turns off the stereo when you turn off  
the ignition. This prevents your vehicle's battery from being  
drained if you leave the stereo on when you turn off the ignition.  
4. Connect the yellow power/memory wire (with black transformer and  
in-line fuse holder) to your vehicle battery's positive (+)  
terminal or to a point in your vehicle's fuse block that provides  
a continuous source of 12 volts.  
This connection provides power for the stereo's components, and  
continuous power for the stereo's memory when the ignition is  
turned off.  
5. Connect the blue/white wire to any optional equipment, designed to  
run from a switched source, that you want the stereo to turn on  
and off (such as a booster or a power antenna).  
This wire does not provide power to the components. It simply  
turns them on or off. If you do not use this wire, secure it with  
a wire tie and do not let it touch metal.  
Connecting an Equalizer/Booster  
If you are connecting the stereo to a separate equalizer or booster, you  
need additional wires (not included).  
To increase the total power output from your system, connect the stereo's  
LINE OUTPUT R-CH WHITE jacks and blue/white wire, if necessary, to the  
equalizer or booster.  
Check the equalizer/booster's owner's manual for directions.  
Connecting One Pair of Speakers  
If you are using only one pair of speakers, follow these steps to connect  
the harness with the 14-pin connector to the speakers.  
Note:  
The labels on the wiring harness are for a two-pair connection. For a  
one-pair connection, the labels are not correct.  
1. Connect the grey wire to the right speaker's positive terminal.  
This terminal is usually marked with a plus (+) sign or red mark.  
2. Connect the violet wire to the right speaker's negative terminal.  
This terminal might be marked with a minus (-) sign or it might  
not be marked at all.  
3. Connect the white wire to the left speaker's positive terminal.  
4. Connect the green wire to the left speaker's negative terminal.  
Connecting Two Pairs of Speakers  
If you are using both front and rear speakers, follow these steps to  
connect the harness with the 14-pin connector to the speakers.  
1. Connect the grey wire to the right front speaker's positive  
terminal. This terminal is usually marked with a plus (+) sign or  
red mark.  
2. Connect the grey/black wire to the right front speaker's negative  
terminal. This terminal might be marked with a minus (-) sign or  
it might not be marked at all.  
3. Connect the white wire to the left front speaker's positive  
terminal.  
4. Connect the white/black wire to the left front speaker's negative  
terminal.  
5. Connect the violet wire to the right rear speaker's positive  
terminal.  
6. Connect the violet/black wire to the right rear speaker's negative  
terminal.  
7. Connect the green wire to the left rear speaker's positive  
terminal.  
8. Connect the green/black wire to the left rear speaker's negative  
terminal.  
Connecting the Antenna  
Connect the vehicle's antenna cable to the stereo's large black antenna  
connector.  
Checking the Connections  
Make sure you have securely made all connections before continuing with  
the installation.  
Connecting the Battery and the Harness  
Plug the harness' connector into the stereo's 14-pin wiring socket, then  
reconnect the cable to the vehicle battery's negative terminal.  
TESTING THE CONNECTIONS  
Turn on your vehicle's ignition, install your stereo's control panel  
and test the stereo.  
The display should light when you press ON/OFF to turn on the stereo.  
If the stereo does not work, immediately disconnect the cable from your  
vehicle battery's negative (-) terminal. Then recheck your connections.  
Caution:  
If you played a CD while testing the connections, be sure to remove  
the CD from the stereo before continuing.  
MOUNTING THE STEREO  
Be sure you test the stereo first and verify that it works properly.  
Then follow these steps to mount the stereo.  
1. Disconnect the cable from the vehicle battery's negative (-)  
terminal.  
(new illus)  
2. Disconnect the wire harness and the antenna.  
(new illus)  
3. You must remove the stereo's control panel to remove the sleeve  
To remove the control panel, press RLS.  
4. Insert both of the supplied keys to the slots at the left and  
right sides of the stereo. Press the keys downward, and slide the  
sleeve off of the stereo.  
Note:  
The keys are labeled to show their top edges.  
5. Insert the sleeve into the dash. Then secure the sleeve to the  
dash by bending out the appropriate tabs with a screwdriver. Bend  
out all the side tabs.  
6. Slide the stereo into the sleeve until it locks into place.  
(new illus)  
7. If your vehicle has a suitable mounting hole under the dash, use  
pliers or a 5/16-inch box-end wrench to attach the short end of  
the supplied mounting bolt to the back of the stereo.  
8. Reconnect the wire harness and the antenna.  
9. Reconnect the cable to the vehicle battery's negative (-)  
terminal.  
10. If you are securing the stereo to an existing mounting hole under  
the dash, push the supplied rubber mounting grommet onto the  
mounting bolt, then push the mounting bolt (covered by the  
mounting grommet) through the existing mounting hole then slide it  
to the left or right to secure it.  
Otherwise, you can use one of the supplied bolts (with attached  
washer) to attach one end of the supplied metal strap to the  
mounting hole on the back of the stereo. If necessary, bend the  
metal strap to fit your vehicle's mounting area. Then use either  
the supplied sheet metal screws or the other bolt (with attached  
washer) to attach the other end of the strap to a solid metal part  
of the vehicle under the dashboard. This strap also helps ensure  
proper electrical grounding of the stereo.  
REMOVING THE STEREO FROM THE DASH  
If you ever want to remove the stereo from the dash, follow these steps.  
1. Disconnect the cable from the vehicle battery's negative (-)  
terminal.  
2. If you secured the stereo to an existing mounting hole under the  
dash, slide the stereo to the right or left to free the mounting  
bolt from the mounting hole.  
Otherwise, remove the bolt holding the metal strap attached to the  
back of the stereo.  
3. Press RLS to remove the stereo's control panel.  
4. Insert both of the supplied keys into the slots at the left and  
right sides of the stereo. Press the keys downward and slide the  
stereo out of the dash.  
5. Remove the keys from the slots.  
6. Disconnect the wire harness and the antenna.  
7. If you are mailing or shipping the stereo, use a small Phillips  
screwdriver to reinstall the shipping screw in the top of the  
stereo.  
6. Reconnect the cable to the vehicle battery's negative (-)  
terminal.  
USING THE CONTROL PANEL  
The stereo's control panel must be in place for the stereo to operate.  
When you remove it, the display turns off and the stereo cannot be used.  
This is a simple, but effective security measure.  
Note:  
Any stored stations remain in memory when the control panel is  
removed.  
INSTALLING THE CONTROL PANEL  
1. Insert the left edge of the control panel into the left edge of  
the recess. Make sure the pins in the recess fill the holes in  
the edge of the control panel.  
2. Gently push the right edge of the control panel into the recess  
until you hear a click.  
REMOVING THE CONTROL PANEL  
1. Press RLS until you hear a click. The control panel swings out.  
2. Remove the control panel, then store it in the supplied carry  
case.  
Caution:  
To keep the metal connecting pins clean, do not touch the connecting  
pins in the recess or on the back of the control panel.  
AM/FM Car CD Player  
(120-2152)  
Operation  
Faxback Doc. # 37645  
SETTING THE CLOCK  
1. Press ON/OFF to turn on the stereo.  
2. While pressing and holding down CLOCK, repeatedly press TUNE/SEEK  
TRACK - until the stereo displays the correct hour. To quickly  
advance the hour, press and hold down TUNE/SEEK TRACK -.  
3. While pressing and holding down CLOCK, repeatedly press TUNE/SEEK  
TRACK + until the stereo displays the correct minute. To quickly  
advance the minute, press and hold down TUNE/SEEK TRACK +.  
Notes:  
The clock resets the seconds to 0 as soon as you stop advancing the  
minute or hour.  
You can use a watch with a sweep-second hand or other time reference  
to set the clock to the exact second at the beginning of an hour.  
When the time reference reaches the beginning of an hour, press and  
hold down CLOCK, then press 6. The clock resets the minutes and  
seconds to 00 and advances the hour if the minutes were past 29.  
ADJUSTING THE CONTROLS  
When you listen to your stereo, adjust these controls to suite your  
listening preferences.  
ON/OFF - Press until the display lights  
to turn on the stereo. To turn  
off the stereo, press ON/OFF  
again.  
AUDIO CONTROL - +/- - Repeatedly press until BAS, TRE,  
BAL, or FAD and a number appear  
on the display, then repeatedly  
press AUDIO CONTROL + or - with-  
in 5 seconds to change the  
stereo's bass, treble, balance,  
or fader settings.  
Notes:  
When you adjust the balance toward the left speakers, L and a number  
appear on the display. When you adjust the balance toward the right  
speakers, R and a number appear on the display.  
When you adjust the balance toward the front speakers, F and a number  
appear on the display. When you adjust the balance toward the rear  
speakers, R and a number appear on the display.  
If BAS, TRE, BAL, or FAD and the number disappear before you press  
AUDIO CONTROL + or -, just press AUDIO CONTROL SEL again.  
To set bass, treble balance, and fader to their center (middle)  
settings, press and hold down AUDIO CONTROL SEL for about 3 seconds  
until the stereo beeps twice.  
Selecting a Preset Equalizer Setting  
The stereo has preset graphic equalizer settings to let you vary the  
balance of the sound it produces. These settings are designed to give you  
the best sound for jazz, pop, rock, classical, and country and western  
music.  
To select a graphic equalizer setting, repeatedly press P-EQ until ROC  
(rock), JAZ (jazz), POP (pop), CLS (classic), or C W (country and  
western) appears on the display. The P-EQ indicator turns on to show that  
you have selected a graphic equalizer setting.  
Note:  
The graphic equalizer setting disappears after about 5 seconds or when  
you press another button.  
To turn off equalization, press P-EQ until DFT (defeat) appears on the  
display. The P-EQ indicator turns off.  
DISPLAYING THE CLOCK  
While the radio or a CD is playing, press CLOCK to display the clock. The  
stereo displays the clock for 5 seconds, then returns to the radio or CD  
display.  
Note:  
After you remove a CD from the CD player, the stereo displays NO Cd,  
then shows the clock.  
RESETTING THE STEREO  
If your stereo locks up or does not work properly, use something pointed,  
such as a straightened paper clip, to press RESET for about 1 second.  
TURNING THE STEREO'S BEEP ON AND OFF  
The stereo normally beeps when you press most buttons. To turn the  
stereo's beep on or off, eject a CD if loaded. Then press and hold down CD  
for about 3 seconds until the  
display turns off then on again.  
RADIO OPERATION  
PLAYING THE RADIO  
1. Press ON/OFF to turn on the stereo. The radio automatically tunes  
to the last station and bank selected.  
2. Press BAND to select the desired band. AM appears on the display  
when the AM band is selected. FMI or FMII appears on the display  
when an FM band is selected.  
3. Tune to the desired station one of the following ways.  
Manual Tuning:  
Repeatedly press TUNE/SEEK TRACK - or + to tune down or up the  
selected band.  
Seek Tuning:  
Press and hold down TUNE/SEEK TRACK - or + for about 1 second to  
tune to the next lower or higher station.  
Note:  
If DX appears on the display, the stereo stops on both strong and weak  
FM stations. To limit seek tuning to only strong FM stations, press  
LO/DX so DX disappears.  
4. Press AUDIO CONTROL + or - to increase or decrease the volume as  
desired.  
(New illus)  
Notes:  
ST appears on the display when an FM signal is received in stereo.  
MEMORY TUNING  
You can manually store up to 6 AM and 12 FM stations in memory groups.  
Each memory group (AM, FMI, and FMII) holds up to six stations. You can  
also automatically store the first 6 strong AM and first 6 strong  
FM stations in a separate automatic travel programming memory.  
Manually Storing Stations  
1. Repeatedly press BAND to select the desired memory group  
(AM for AM, or FMI or FMII for FM).  
2. Use either seek tuning or manual tuning to tune to the station you  
want to store.  
Note:  
To tune both strong and weak FM stations, press LO/DX so DX appears.  
To tune only strong FM stations, press LO/DX so DX disappears.  
3. Press and hold down the desired memory channel button until the  
memory channel number, ch, and the frequency flash once on the  
display. The station is stored.  
Storing Stations in Automatic Travel Programming Memory  
The stereo can store the first 6 strong AM and the first 6 strong  
FM stations it finds into its automatic travel programming memory. This  
memory is separate from the stereo's memory groups, so it does not replace  
the stations you manually stored.  
1. Repeatedly press BAND to select the desired band (AM for AM, or  
FMI or FMII for FM).  
2. Press and hold down TUNE/SEEK TRACK ATP (automatic travel  
programming) for about 2 seconds. The stereo displays AS, scans  
the selected band, and automatically stores the first 6 strong  
stations it finds in automatic travel programming memory.  
1. Repeatedly press BAND to select the desired band  
(AM for AM, or FMI or FMII for FM).  
2. Press TUNE/SEEK TRACK ATP until AS appears on the display.  
Note:  
Do not hold down TUNE/SEEK TRACK ATP. This causes the stereo to  
automatically scan and store the first 6 strong stations it finds into  
its automatic travel programming memory.  
3. Press the desired memory channel button.  
Note:  
If the stereo could not find 6 strong stations, - - - appears on the  
display if you try to tune to a vacant memory channel.  
Scanning Stored Stations  
The radio can scan all stored stations in the selected band, pausing for  
5 seconds at each station.  
To start scanning stored stations, repeatedly press BAND to select the  
desired memory group, then press P-SCAN.  
To scan the stations in the automatic travel programming memory, press  
BAND to select the desired band, press TUNE/SEEK TRACK ATP so AS appears  
on the display, then press P-SCAN.  
As the radio scans each memory channel, the channel number flashes and the  
frequency is displayed. After scanning all memory channels, the stereo  
returns to the original station.  
To stop the scanning when the radio pauses at a station you want to listen  
to, press P-SCAN again.  
CD PLAYER OPERATION  
Cautions:  
Play only CDs that have this mark on them:  
The CD player has a wide dynamic range. As a result, if you turn your  
stereo's volume up too high during soft (low volume) sections of a  
program, your speakers might be damaged when a sudden loud passage  
occurs.  
If the CD player is jolted during play, the rotation speed might  
suddenly change or the CD player might make an unusual noise. This  
is not a malfunction.  
PLAYING A CD  
1. Press ON/OFF to turn on the stereo.  
2. Insert a compact disc (label side up) in the slot. The stereo  
displays CD, DISC IN, and TR:01 and the CD starts to play from  
track 1.  
If a CD is already in the CD player, simply press CD to play the  
CD. The stereo displays CD, DISC IN, TR:, and the track number of  
the track you last played, and the CD starts to play from the  
point where you last stopped it.  
After the stereo plays the entire CD, it automatically repeats all  
tracks, starting with Track 1.  
Note:  
If a CD is loaded when you turn off your vehicle's ignition or the CD  
player, you must wait about 5 seconds after you turn the ignition or  
CD player back on before you can press CD to play a CD.  
3. Press AUDIO CONTROL + or - to increase or decrease the volume as  
desired.  
Note:  
See "Adjusting the Controls" on Page 16 for information about changing  
the stereo's other settings.  
4. To pause playback, press CD. The stereo displays PAU, DISC IN,  
TR:, and the track number. To resume play, press CD again.  
Note:  
If you pause a CD for more than 5 minutes, the clock display appears.  
5. To remove a CD from the CD player, press Up Arrow.  
(new illus)  
SELECTING A TRACK  
To select a track on the loaded CD, press TUNE/SEEK TRACK + during play to  
advance to the next track or press TUNE/SEEK TRACK - to go back. Repeat-  
edly press TUNE/SEEK TRACK + or - to select the next or previous track.  
AUDIBLE SEARCH  
To search for a particular section of a track, press and hold down  
TUNE/SEEK TRACK + or TUNE/SEEK TRACK - during play. The stereo rapidly  
plays the CD either forward or backward (like cuing or reviewing a  
cassette tape). When you hear the section you want, release TUNE/SEEK  
TRACK + or TUNE/SEEK TRACK - to resume normal play.  
SHUFFLE PLAY  
You can set the stereo to randomly select and play tracks from the loaded  
CD. After each track plays, the stereo automatically selects another  
track and plays it until you stop shuffle play.  
To begin shuffle play, press SHUF. The stereo displays DISC IN, SHF, TR:,  
and the track number.  
To stop shuffle play, press SHUF again to resume normal play, SHF  
disappears.  
Note:  
SCANNING THE TRACKS  
You can set the stereo to play the first 10 seconds of each track on the  
loaded CD, so you can find the track you want to listen to.  
To begin scanning, press SCAN. The stereo displays DISC IN, SCN, TR:, and  
the track number.  
To stop scanning, press SCAN again at the desired track to resume normal  
play. SCN disappears.  
REPEAT PLAY  
You can set the stereo to repeat a single track on the loaded CD.  
To repeat a track, press RPT during play. The stereo displays DISC IN,  
RPT, TR:, and the track number. When the track ends, it automatically  
repeats play.  
To stop repeating the track, press RPT again to resume normal play. RPT  
disappears.  
SWITCHING BETWEEN THE CD AND THE RADIO  
You can temporarily stop a CD and listen to the radio by pressing BAND.  
The CD stops and the radio tunes to the last station selected.  
To continue playing the CD, press CD.  
AM/FM Car CD Player  
(120-2152)  
Troubleshooting  
Faxback Doc. # 37646  
If your stereo's CD player is not working as it should, it displays an  
error indicator and ejects the loaded CD. These suggestions might help  
you eliminate the problem.  
Indicator Problem  
Suggestion  
E01  
Loading and/or unloading  
operation fails.  
Make sure a disc is loaded. If it  
is not, insert the disc properly.  
If it is, eject the disc and load  
it again.  
E07  
The CD is loaded  
incorrectly.  
Reload the CD with the label side  
up.  
The CD is dirty or  
defective.  
Clean the CD or try another CD.  
L Err  
Abnormal CD operation.  
Contact your local Radio Shack  
store for assistance.  
If the stereo still does not operate properly, the connecting pins in the  
recess or on the back of the control panel might be dirty. Use a soft  
cloth or a contact cleaner (such as Cat. No. 64-4340) to clean them.  
(new illus)  
If the stereo still does not operate properly, take it to your local  
Radio Shack store for assistance.  
AM/FM Car CD Player  
(120-2152)  
Care and Maintenance  
Faxback Doc. # 37647  
Your Optimus High-Power in-Dash AM/FM Stereo CD Player is an example of  
superior design and craftsmanship. The following suggestions will help  
you care for the stereo so you can enjoy it for years.  
Keep the stereo dry. If it gets wet, wipe it dry immediately.  
Liquids can contain minerals that can corrode electronic circuits.  
Handle the stereo gently and carefully. Dropping it can damage the  
circuit boards and case and can cause it to work improperly.  
Keep the stereo away from dust and dirt, which can cause premature  
wear of parts.  
Wipe the stereo with a damp cloth occasionally to keep it looking new.  
Do not use harsh chemicals, cleaning solvents, or strong detergents to  
clean the stereo.  
Modifying or tampering with the stereo's internal parts can cause a  
malfunction and might invalidate your stereo's warranty and void your FCC  
authorization to operate it. If your stereo is not performing as it  
should, take it to your local Radio Shack store for assistance.  
CD CARE TIPS  
Even though a CD is very durable, you should handle it with care. We  
recommend the following precautions.  
Keep the CD in its protective case or sleeve when you are not playing  
it.  
Handle a CD by its edges to avoid fingerprints which can prevent the  
CD player's laser beam from accurately reading the CD. Your local  
Radio Shack store sells a suitable CD cleaner kit.  
Do not write on either side of the CD, particularly the non-label  
side. (Signals are read from the non-label side.)  
Keep the CD dry. A water drop can act as a lens and affect the laser  
beam's focus.  
If you park your vehicle in the sun, temperatures inside the vehicle  
can easily reach levels that could damage your CDs. To prevent heat  
damage, avoid leaving your CDs in your vehicle.  
If a CD skips when you try to play it, it might be scratched. Your local  
Radio Shack store sells a Scratch 'n Fix kit (Cat. No. 42-127) that might  
help remove the scratch and stop the skip.  
REPLACING A FUSE  
If the stereo does not operate, you might need to replace the red power  
wire's fuse. If the clock resets or stored stations are lost when the  
ignition is off, you might need to replace the yellow continuous power  
wire's fuse. Check both fuses.  
Warning:  
Before you begin, disconnect the cable from the vehicle battery's  
negative (-) terminal.  
(new illus)  
1. Push together and twist the fuse holder's pans until they spring  
apart.  
2. If either fuse is blow, replace it. Use only standard 1 1/4-inch  
fuses with the proper rating. The red power wire's fuse must be  
1.0 amp, and the yellow continuous power wire's fuse must be 5.0  
amps.  
Caution:  
Make sure you replace a fuse only with another fuse of the same  
rating.  
3. Reassemble the fuse holder by inserting the fuse and pushing  
together and twisting the two parts until they latch.  
4. Reconnect the cable to the vehicle battery's negative (-)  
terminal.  
AM/FM Car CD Player  
(120-2152)  
Specifications  
Faxback Doc. # 37648  
RADIO  
FM (Nominal)  
AM (Nominal)  
530-1710 kHz  
N/A  
Frequency Range  
Frequency Response  
IF Rejection  
87.5-107.9 MHz  
50-12500 Hz  
94 dB  
51 dB  
Image Rejection  
Selectivity  
68 dB  
36.5 dB  
94 dB  
66 dB  
Signal-to-Noise (S/N) Ratio  
Stereo Separation  
Usable Sensitivity  
CD PLAYER  
60 dB  
49 dB  
24 dB  
N/A  
17 dB  
29 dB  
Frequency Response..............................................5-20000 Hz  
Signal-to-Noise Ratio................................................65 dB  
Harmonic Distortion.................................................0.08 %  
Wow and Flutter.............................................Not Measurable  
CDs Used (Diameter).....................5-inch (120 mm) and 3-inch (80 mm)  
SIGNAL FORMAT  
D-A Conversion................................................1 Bit Linear  
Transmission Bit Rate.........................................1.4 Mbit/sec  
Sampling Frequency.................................................8 times  
Pick-Up System.............................................Optical Pick-Up  
Optical Source.......................................................Laser  
Wavelength..........................................................790 nm  
Rotation Speed.................................................200-500 rpm  
Error Correction......................................................CIRC  
Number of Channels.............................................2 ch stereo  
GENERAL  
Power Source........................................12V DC Negative Ground  
Speaker Output Impedance............................................4 Ohms  
Output Power (10% THD)  
Maximum................................................24 Watts x 4 CH  
Nominal............................16 Watts x 4 CH or 5.5 Watts x 4 CH  
Chassis Size (HWD)............................2 1/4 x 7 1/2 x 7 1/4 Inches  
(57 x 190 x 186 mm)  
Weight.............................................................52.9 oz  
(1.5 kg)  
Specifications are typical; individual units might vary.  
Specifications are subject to change and improvement without notice.  
(br/km-01/31/1997)  
LN-03/04  

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