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High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Features
Faxback Doc. # 48528
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
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. The auto travel programming feature lets you store
strong local stations into a separate travel memory.
Memory tuning, seek and scan tuning, and FM optimizer circuitry all help
make your stereo's operation simple and quick to help you 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.
Intro Scan - scans and plays the first 10 seconds of each track, so
you can find a specific track.
Shuffle Play - randomly selects and plays tracks from the loaded CD.
Repeat Play - automatically repeats the current track.
AM/FM STEREO TUNER
Band Button - lets you easily select one of the stereo's AM or
FM bands.
Memory Scan Tuning - scans all stations stored in memory, playing for
5 seconds on each.
Memory Tuning - lets you quickly store and tune up to 18 of your
favorite stations (6 AM and 12 FM).
Auto Travel - lets you automatically store the first 6 strong
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 Service.
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.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Installation
Faxback Doc. # 48529
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
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 terminal in my vehicle's fuse box supplies power even when the
ignition is turned off?
Which terminal in my vehicle's fuse box is for accessories?
How do I connect a wire to the fuse box?
Also, be aware that installation in your vehicle might require cutting or
modifying your vehicle.
Place the stereo as close as possible to the selected mounting location.
We recommend that you install the stereo by temporarily connecting it to
ground and power, optional components, and your speakers. Then test the
connections, disconnect the stereo, mount it in your vehicle, and
reconnect it. The instructions in this manual are arranged in this order.
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. This autosound stereo system is a DIN-E size unit that requires a
2-inch high by 7-1/2-wide by 7-1/4 inch deep (57 x 190 x 186 mm) mounting
area.
Note: 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
RadioShack store. Follow the installation kit's instructions to
mount the stereo.
CAUTIONS: Make sure the stereo will not tilt up more than 30 degrees when
it is mounted.
Be sure 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 them 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 Phillips screwdriver to remove the
shipping screw from the top of the stereo.
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. However, your
local RadioShack store will provide warranty service if you
cut a wire and find the product is defective.
You might need additional wire, depending on your individual
autosound system, to complete the connections. Your local
RadioShack 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.
Be sure your speakers can handle 64 Watts of power (16 Watts
per channel). Each speaker must have an impedance of at least
4 Ohms. Your local RadioShack 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 wires in the wiring harness have the following colors and
labels.
(Black) - Ground
(Red) - +12V to Ignition
(Yellow) - +12V to Battery
(Blue/White) - AMP Remote Turn on 500 mA MAX
(White) - Front Left Speaker (+)
(White/Black) - Front Left Speaker (-)
(Gray) - Front Right Speaker (+)
(Gray/Black) - Front Right Speaker (-)
(Green) - Rear Left Speaker (+)
(Green/Black) - Rear Left Speaker (-)
(Violet) - Rear Right Speaker (+)
(Violet/Black) - Rear Right Speaker (-)
Using an Adapter Harness
If you are replacing an existing stereo, or if your vehicle has been
factory-wired for autosound components, you might be able to use an
adapter harness to connect the power and speakers. RadioShack stores sell
adapter harnesses for most vehicles.
Follow the directions that come with the adapter harness to temporarily
connect the ground, power, optional components, and speakers. Then go to
"Connecting the Antenna" below.
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.
(Black) - Ground
(Red) - + 12V to Ignition
(Yellow) - + 12V to Battery
(Blue/White) - AMP Remote Turn on 500 mA MAX
1. Disconnect the cable from your vehicle's negative (-) battery
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 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 (such as
the CD player), 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 R (right)
and L (left) line output jacks on the back of the stereo and blue/white
wire, if necessary, to the equalizer or booster.
Check the equalizer/booster's owner's manual for directions.
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.
12-2154 Only: Before connecting the speakers, remove the tape that holds
the mounting sleeve in place and slide the sleeve off of
the stereo. Then set 2CH/4CH on the bottom of the stereo
to 4CH.
(White) - Front Left Speaker (+)
(White/Black) - Front Left Speaker (-)
(Gray) - Front Right Speaker (+)
(Gray/Black) - Front Right Speaker (-)
(Green) - Rear Left Speaker (+)
(Green/Black) - Rear Left Speaker (-)
(Violet) - Rear Right Speaker (+)
(Violet/Black) - Rear Right Speaker (-)
1. Connect the gray wire to the right front speaker's positive terminal.
This terminal is usually marked with a plus (+) sign or red mark.
2. Connect the gray/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 speaker's negative terminal.
Connecting One Pair of Speakers
For 12-2155: If you are using only one pair of speakers, follow Steps 1-4
in "Connecting Two Pairs of Speakers" above to connect the
harness with the 14-pin connector to the speakers.
(White) - Left Speaker (+)
(White/Black) - Left Speaker (-)
(Gray) - Right Speaker (+)
(Gray/Black) - Right Speaker (-)
(Green) - |\
(Green/Black) - |\\___ Do Not Connect
(Violet) - |//
(Violet/Black) - |/
For 12-2154: If you are using only one pair of speakers, remove the tape
that holds the mounting sleeve in place and slide the sleeve
off of the stereo. Then set 2CH/4CH on the bottom of the
stereo to 2CH. Then follow these steps to connect the
harness with the 14-pin connector to the speakers.
(This section has been corrected. See Faxback Doc. # 48535.)
(White) - Left Speaker (+)
(Green) - Left Speaker (-)
(Gray) - Right Speaker (+)
(Violet) - Right Speaker (-)
(White/Black) - |\
(Green/Black) - |\\___ Do Not Connect
(Gray/Black) - |//
(Violet/Black) - |/
1. Connect the gray 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 the Antenna
Connect the vehicle's antenna cable to the antenna jack on the back of the
stereo.
Completing the Connections
Make sure you have securely made all other connections, then plug the
harness' connector into the stereo's 14-pin wiring socket. Reconnect the
cable to the vehicle's negative (-) battery terminal.
TESTING THE CONNECTIONS
Turn on your vehicle's ignition and install your stereo's control panel
(see "Installing the Control Panel" in Faxback Doc. # 48530), ON/OFF
lights. Then press ON/OFF. The stereo's buttons and display light.
If the stereo does not work, immediately disconnect the cable from your
vehicle's negative (-) battery terminal. Then recheck your connections.
After you verify that the button/display light, follow the instructions
in "Mounting the Stereo" below.
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 verify that the stereo is connected properly (see "Testing the
Connections" above). Then follow these steps to mount the stereo.
1. Make sure the ignition is turned off, then disconnect the cable from
your vehicle's negative (-) battery terminal.
2. Disconnect the wire harness and the antenna.
3. Press RLS on the right side of the control panel to remove the control
panel.
4. Remove the tape that holds the sleeve in place and slide the sleeve
off of the stereo.
Note: If you have a Cat. No. 12-2154 stereo, you have already removed
the tape (while setting 2CH/4CH). Continue with Step 5.
5. Turn the sleeve around so the flat tabs on the front are facing you,
then insert it into the dash. Then secure the sleeve to the dash by
bending out the tabs with a screwdriver. Bend out all the side tabs.
6. If your vehicle has an existing mounting hole behind 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.
7. Reconnect the wire harness and the antenna.
8. Slide the stereo into the sleeve until it locks into place.
9. If you are securing the stereo in an existing mounting hole in the
dash, push the supplied rubber mounting grommet onto the mounting
bolt.
Then push the mounting bolt (covered by the mounting grommet) through
the mounting hole and make sure it is secure.
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.
10. Reconnect the cable to the vehicle battery's negative (-) terminal.
Then install the stereo's control panel (see "Installing the Control
Panel" in Faxback Doc. # 48530).
Note: You might need to reset the stereo's clock after you reconnect
the cable to the vehicle battery.
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 your vehicle's negative (-) battery
terminal.
2. If you secured the stereo to an existing mounting hole under the dash,
slide out the stereo to free the mounting bolt from the mounting hole.
Or, 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 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.
Note: The keys are labeled to show their top edges.
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 Phillips screwdriver
to reinstall the shipping screw in the top of the stereo.
8. Reconnect the cable to the vehicle battery's negative (-) terminal.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Control Panel
Faxback Doc. # 48530
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
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.
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. The hole in the control panel interlocks with the tab in the
recess.
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. You hear a click and 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.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Operation
Faxback Doc. # 48531
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
BASIC OPERATION
TURNING THE STEREO ON AND OFF
To turn on the stereo, press ON/OFF. The buttons and display light. To
turn off the stereo, press ON/OFF again.
SETTING THE CLOCK
1. Press ON/OFF to turn on the stereo.
2. While holding down CLOCK, repeatedly press TUNE/SEEK TRACK + until the
stereo displays the correct hour. (To continuously advance the hour,
hold down TUNE/SEEK TRACK +.)
3. While holding down CLOCK, repeatedly press TUNE/SEEK TRACK - until the
stereo displays the correct minute. (To continuously advance the
minute, hold down TUNE/SEEK TRACK -.)
Notes: The clock resets the seconds to 0 as soon as you stop advancing
the minute.
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, 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 SOUND
When you listen to your stereo, adjust these controls to suit your
listening preferences.
AUDIO CONTROL SEL +/- - Repeatedly press or hold down to increase or
decrease the volume. VOL and a volume level
number appear.
WARNING: To protect your hearing, do not listen at high volume levels.
Slowly increase the volume to a comfortable listening level.
AUDIO CONTROL SEL - Repeatedly press until bAS, TRE, bAL, or FAd and a
number appear on the display, then repeatedly press
or hold down + or - within 5 second 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.
When you adjust the fader toward the front speakers, F and a
number appear on the display. When you adjust the fader toward
the rear speakers, R and a number appear.
If bAS, TRE, bAL, or FAd and the number disappear before you press
+ or -, repeatedly press AUDIO CONTROL SEL until the setting you
want reappears, then repeatedly press or hold down + or - to set
it.
To set bass, treble, balance, and fader to their center (middle)
settings, hold down AUDIO CONTROL SEL for about 3 seconds until
the stereo beeps twice.
LOUD (12-2154 Only) - To increase the low ranges of sounds, repeatedly
press LOUD until ON appears. To turn off loudness,
repeatedly press LOUD until OFF appears.
The LOUD button is lit continuously while the
stereo is on.
(This section has been corrected. See Faxback Doc.
# 48535.)
FAVORITE SOUND MEMORY (12-2155 ONLY)
You can store your stereo's current volume, bass, treble, balance, and
fader settings into memory. This lets you select the best sound for the
music you listen to and save that sound, so you can recall it later. You
can store two FSM (favorite sound memory) settings.
Follow these steps to store an FSM setting.
1. Repeatedly press FSM until FSM I or FSM II appears.
2. Adjust the volume, bass, treble, balance and fader using the
information in "Adjusting the Sound" above.
Note: FSM I or FSM II blinks while you adjust the controls.
3. When you finish adjusting the stereo's settings, hold down FSM until
the stereo beeps twice. This indicates that the settings you entered
are saved in the FSM setting you selected.
To select an FSM setting you saved, repeatedly press FSM until FSM I or
FSM II appears. The stereo is set to those settings you entered in Step
2.
To turn off FSM, repeatedly press FSM until FSM I and FSM II disappear
from the display. The stereo is set to its default settings.
DISPLAYING THE CLOCK
While the radio or a CD is playing, press CLOCK to display the clock.
TURNING THE KEY TONE ON AND OFF
The stereo is preset to beep when you press most buttons. To turn the key
tone off, turn the stereo off, then hold down ATP (automatic travel
programming) and 6 together for about 3 seconds until bP (beep) OFF
appears.
To turn the key tone back on, turn the stereo off, then hold down ATP and
6 together for about 3 seconds until bP ON appears.
RADIO OPERATION
PLAYING THE RADIO
1. Press ON/OFF to turn on the stereo. The radio automatically tunes to
the last station and band selected.
2. Press BND to select the desired band. AM appears when the AM band is
selected. FMI or FMII appears when an FM band is selected.
3. Tune to the desired station in one of the following ways.
Manual Tuning: Repeatedly press TUNE/SEEK TRACK - or + to tune down
or up the selected band.
Seek Tuning: Hold down TUNE/SEEK TRACK - or + for about 1 second to
tune to the next lower or higher station.
4. Press AUDIO CONTROL SEL + or - to increase or decrease the volume as
desired.
Notes: ST appears when an FM signal is received in stereo.
See "Adjusting the Sound" above for information about changing the
stereo's other settings.
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.
Storing Stations
1. Repeatedly press BND to select the desired memory group (AM, FMI, or
FMII).
2. Tune to the station you want to store.
3. Hold down the desired memory channel button until P-, the memory
channel number, 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 (ATP) memory.
This memory is separate from the stereo's memory groups, so it does not
replace the stations you manually stored.
1. Repeatedly press BND to select the desired band (AM, FMI, or FMII).
2. Hold down ATP (automatic travel programming) for about 2 seconds. The
stereo displays ATP, scans the selected band, and automatically stores
the first 6 strong stations it finds in automatic travel programming
memory.
After the stereo stores all six stations in the selected band, it
tunes to the first station it stored in automatic travel programming
memory.
Note: If the stereo could not find any stations, P - 1 - - - appears
on the display. Press BND or select another station to listen
to the radio.
3. Repeatedly press BND until ATP disappears to get out of automatic
travel programming.
Selecting a Stored Station
To select a station you manually stored in AM, FMI, or FMII, repeatedly
press BND to select the desired memory group, then press the desired
memory channel button.
Note: Do not hold down the memory channel button. This stores the
currently tuned station into that location.
To select a station you automatically stored in automatic travel
programming memory, follow these steps:
1. Repeatedly press BND to select the desired band (AM, FMI, or FMII).
2. Press ATP for less than 1 second to select the desired memory station.
Each time you press ATP, the stereo advances to the next memory
channel.
Notes: Do not hold down ATP. This causes the stereo to automatically
scan and store the first 6 strong stations it finds into its
automatic travel programming memory.
If the stereo could not find any strong stations, P - x - - -
(where x is one of the stereo's 6 channel numbers) appears for
the empty channels.
Scanning Stored Stations
The radio can scan all stored stations in the selected band, pausing for 5
seconds at each station.
To start scanning stations you manually stored, repeatedly press BND to
select the desired memory group, then hold down BND until SCN appears.
To scan the stations in the automatic travel programming memory,
repeatedly press BND to select the desired band, press ATP so ATP appears,
then hold down BND until SCN appears.
As the radio scans each memory channel, P- and the channel number flash
and the frequency is displayed. After scanning all memory channels, the
stereo returns to the original station.
To stop scanning when the radio pauses at a station you want to listen to,
press BND again during the pause.
CD PLAYER OPERATION
CAUTIONS: Play only CDs that have this mark on them: COMPACT
D I S C
DIGITAL SOUND
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 usual
noise. This is not a malfunction.
PLAYING A CD
1. Press ON/OFF to turn on the stereo.
2. Insert a CD (label side up) in the slot. The stereo automatically
switches to CD play mode if the radio is playing and displays cd In.
Then the display shows (CD symbol), cd, and TR01, and the CD starts to
play from Track 1.
If a CD is already in the CD player ([CD symbol] appears on the
display), simply press CD to play the CD. The stereo displays cd, TR,
and the 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.
3. Press + or - to increase or decrease the volume as desired.
Note: See "Adjusting the Sound" above for information about changing
the stereo's other settings.
4. To pause playback, press CD. TR and the track number flash. To
resume play, press CD again.
Note: If you pause a CD for more then 5 minutes, the stereo turns
off.
5. To remove a CD from the CD player, press (symbol). EJ cd appears.
Notes: If you eject a CD while it is playing and do not remove it from
the CD player, the stereo automatically draws the CD back in and
starts playing again after about 5 seconds.
If you eject a CD then remove it from the CD player, the stereo
displays no cd (or the current time if you press CLOCK).
SELECTING A TRACK
To select a track on the loaded CD, press TUNE/SEEK TRACK (+) during play
to advance to the next track or TUNE/SEEK TRACK (-) to go back to the
start of the current track. Repeatedly press TUNE/SEEK TRACK (+) or (-)
to select the next or previous track.
AUDIBLE SEARCH
To search for a particular section of a track, hold down TUNE/SEEK TRACK
(+) or TUNE/SEEK TRACK (-) during play. The stereo rapidly plays the CD
either forward or backward (like cueing 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/1. SHF appears during shuffle play.
To stop shuffle play, press SHUF/1 again to resume normal play. SHF
disappears.
Note: You can use audible search during shuffle play (see "Audible
Search" above).
REPEAT PLAY
You can set the stereo to repeat a single track on the loaded CD.
To repeat a track, press RPT/2 during play. RPT appears during repeat
play. When the track ends, it automatically repeats.
To stop repeating the track and resume normal play, press RPT/2. RPT
disappears.
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 SCN/3. SCN appears during scanning.
To stop scanning, press SCN/3 again at the desired track to resume normal
play. SCN disappears.
SWITCHING BETWEEN THE CD AND THE RADIO
You can temporarily stop a CD and listen to the radio by pressing BND.
The CD stops and the radio tunes to the last station selected.
To continue playing the CD from the point where you stopped it, press CD.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Troubleshooting
Faxback Doc. # 48532
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
If your stereo's CD player is not working as it should, it displays an
error indicator. If it is a numbered error, it ejects the CD. Try these
suggestions.
Indicator
E01
Problem
Suggestion
Loading and/or unloading Make sure a CD is
operation fails.
loaded. If it is not,
insert the CD properly.
If it is, eject the CD
and load it again.
E07
The CD is loading
incorrectly.
Reload the CD with the
label side up.
The CD is dirty or
defective.
Clean the CD (see "CD
Care Tips" in Faxback
Doc. # 48533) or try
another CD.
no cd
No CD is loaded.
Load a CD.
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.
If the stereo still does not operate properly, take it to your local
RadioShack store for assistance.
RESETTING THE STEREO
If your stereo locks up or does not work properly, remove the front panel
and use a straightened paper clip to press the reset button on the bottom
left side of the inside panel for about 1 second.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Care and Maintenance
Faxback Doc. # 48533
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
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 your stereo so you can enjoy it for years.
Keep the stereo dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
Keep the stereo away from dust and dirt, which can cause premature wear
of parts.
Handle the stereo gently and carefully. Dropping it can damage circuit
boards and cases and can cause the stereo to work improperly.
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 components can cause a
malfunction, invalidating your stereo's warranty and voiding your FCC
authorization to operate it. If your stereo is not performing as it
should, take it to your local RadioShack store for assistance.
THE FCC WANTS YOU TO KNOW
Your stereo might cause TV or radio interference even when it is operating
properly. To determine whether your stereo is causing the interference,
turn off your stereo. If the interference goes away, your stereo is
causing it. Try to eliminate the interference by:
Moving your stereo away from the receiver.
Contacting your local RadioShack store for help.
If you cannot eliminate the interference, the FCC requires that you stop
using your stereo.
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
RadioShack 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
RadioShack store sells a Scratch 'n Fix kit (Cat. No. 42-127) that might
help remove the scratch and stop the skip. See also "Troubleshooting" in
Faxback Doc. # 48532.
REPLACING A FUSE
If the stereo does not operate, you might need to replace the red power
wire's 1-amp 1-1/4 inch fuse with the supplied spare fuse (Cat. No.
270-1005). If the clock resets or stored stations are lost when the
ignition is off, you might need to replace the 10-amp blade-type fuse on
the stereo's back panel with the supplied spare fuse (Cat. No. 270-1081).
Check both fuses.
CAUTION: Do not use a fuse with ratings other than those specified here.
Doing so might damage your stereo.
Replacing the Red Power Wire's Fuse
1. Disconnect the cable from your vehicle's negative (-) battery terminal
2. Push together and twist the fuse holder's parts on the red power wire
until they spring apart. Then remove the fuse.
3. If the fuse is brown, replace it. Use only the supplied 1-1/4 inch
fuse or a replacement fuse with the proper rating (such as Cat. No.
270-1005). The fuse must be 1 amp.
4. Reassemble the fuse holder by inserting the fuse into the longer of
the fuse holder's ends, and pushing together and twisting the two
parts until they latch together.
5. Reconnect the cable to the vehicle battery's negative (-) terminal.
Replacing the Blade-Type Fuse
1. Disconnect the cable from your vehicle's negative (-) battery terminal
2. If the back of the stereo is not accessible, remove the stereo from
the dash as described in "Removing the Stereo From the Dash" in
Faxback Doc. # 48529.
3. Grasp the fuse's plastic end and pull it out.
4. If the fuse is blown, replace it. Use only the supplied blade-type
fuse or a replacement fuse with the proper rating (such as Cat. No.
270-1081). The fuse must be 10 amps.
5. Grasp the new fuse's plastic end and push it in.
6. If necessary, reinstall the stereo in the dash.
7. Reconnect the cable to the vehicle battery's negative (-) terminal.
High-Power In-Dash AM/FM Stereo CD Player
(120-2154/55) Specifications
Faxback Doc. # 48534
This document contains instructions for both Cat. No. 120-2154 and
120-2155 stereos. (You can find the Cat. No. of your model on the top
of the stereo.) 120-2154 has a LOUD button while 120-2155 has an FSM
button. Unless otherwise noted, these are the primary differences
between the two units listed.
RADIO:
FM (Nominal)
AM (Nominal)
Frequency Range: ................. 88-108 MHz ............... 530-1710 kHz
Frequency Response (+/-3 dB): .... 50-12500 Hz ....................... N/A
IF Rejection: ...................... 85 dB ......................... 40 dB
Image Rejection: ................... 60 dB ......................... 25 dB
Selectivity: ....................... 66 dB ........................ 100 dB
Signal-to-Noise (S/N) Ratio: ....... 60 dB ......................... 49 dB
Stereo Separation: ................. 30 dB ........................... N/A
Usable Sensitivity: ................ 17 dB ......................... 29 dB
CD PLAYER:
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: ......................................... Optional Pick-Up
Optical Source: .................................................... Laser
Wavelength: ....................................................... 785 nm
Rotation Speed: .............................................. 200-500 rpm
Error Correction: ................................................... CIRC
Number of Channels: ..................................... 2-channel stereo
GENERAL:
Power Source: ..................................... 12V DC Negative Ground
Speaker Output Impedance: ......................................... 4 Ohms
Maximum Power: ................. 25 Watts x 2CH or 6 Watts x 4CH (12-2154)
25 Watts x 4CH (12-2155)
Power Output (RMS): ............ 16 Watts x 2CH or 4 Watts x 4CH (12-2154)
16 Watts x 4CH (12-2155)
Chassis Size (HWD): ............................ 2.28 x 7.40 x 7.08 Inches
(58 x 188 x 180 mm)
Weight: ................................................. 52.9 oz (1.5 kg)
Specifications are typical; individual units might vary. Specifications
are subject to change and improvement without notice.
(LB/eb 6/29/98)
LN-03/04
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