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CT-X421 YU
STEREO CAR CASSETTE RECEIVER
RADIO-CASSETTE ESTEREOFONICO PARA AUTOMOVIL
OPERATING INSTRUCTIONS
MANUAL DE INSTRUCCIONES
MODE D'EMPLOI
OWNER'S RECORD
For your convenience, record the model number and
serial number (you will find them on the bottom side of
your set) in the space provided below. Please refer to
them when you contact your AIWA dealer in case of
difficulty.
Model No. CT-X421
Serial No.
ENGLISH
ESPAÑOL
FRANÇAIS
8B-KTG-901-11
010105BTM-OX


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1 ENGLISH
PRECAUTIONS
· Use only in a 12-volt DC negative-ground electrical
system.
· Disconnect the vehicle's negative battery terminal
while mounting and connecting the unit.
· When replacing the fuse, be sure to use one with an
identical amperage rating. Using a fuse with a higher
amperage rating may cause serious damage to the
unit.
· Keep screwdrivers, etc. and other metallic or magnetic
objects away from the playback head.
· When your vehicle has been parked in direct sunlight
resulting in a considerable rise in the temperature
inside, allow the unit to cool off before operating it.
· Keep the volume at a level at which you can hear
outside warning sounds (horns, sirens, etc.).
NOTE
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However, there
is no guarantee that interference will not occur in a
particular installation. If this equipment does cause
harmful interference to radio or television reception,
which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment
and receiver.
-- Connect the equipment into an outlet on circuit
different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV
technician for help.
CAUTION
Modifications or adjustments to this product, which are
not expressly approved by the manufacturer, may void
the user's right or authority to operate this product.
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TABLE OF CONTENTS
THEFT PROTECTION .............................................. 2
BASIC OPERATION, AUDIO AND CLOCK
ADJUSTMENT ..................................................... 2
RADIO OPERATION ................................................ 3
TAPE PLAYBACK ..................................................... 5
AUXILIARY EQUIPMENT ......................................... 6
MAINTENANCE ........................................................ 6
SPECIFICATIONS .................................................... 7
Note
Some buttons are assigned two or more functions.
For detailed descriptions, refer to the related pages.
Notes on cassettes
Do NOT expose cassettes to direct sunlight, extremely
high or cold temperature or moisture.
Keep cassettes away from equipment with built-in
magnets to avoid unwanted noise or loss of sound
quality.
Do NOT touch the tape of a cassette, as any dirt or dust
will contaminate the heads.
Be sure to remove any cassette from the unit if you are
not using it.
Caution on the transit protection pad
Be sure to remove the pad before operating the unit.
Transit protection pad


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2
THEFT PROTECTION
Take the front panel with you when leaving the car, and
keep it in the supplied carrying case.
Detaching the front panel
Before detaching the front panel, remove the cassette to
prevent possible damage to the unit.
1 Press z to remove the cassette.
2 Press and hold PWR/MUTE until the unit turns off.
3 Press %. (Hold the panel with one hand to prevent
accidentally dropping it.)
4 Remove the panel.
Attaching the front panel
1 Engage the left side of the front panel to the left catch
on the unit.
2 Push the panel forward until it locks. Be sure not to
press any buttons while you are attaching the panel.
Note
Do not touch the front panel connector. This could cause
a poor or faulty connection.
Security lamp
The security lamp will continue to flash while the front
panel is detached from the unit.
BASIC OPERATION,
AUDIO AND CLOCK
ADJUSTMENT
Turning the unit on/off
· Press PWR/MUTE to turn on the unit. The unit also
turns on when you insert a cassette.
· Press and hold PWR/MUTE until the unit turns off.
Note
Most operations described in this manual require
the unit to be turned on before starting the operation,
unless explicitly stated otherwise.
Changing the source mode
1 Press FNC.
Pressing FNC cycles through source modes in the
following order:
FM1
FM2
FM3
AM1
AM2
* Tape Play mode (available while a cassette is in the
unit)
Adjusting the volume
1 Turn the Smart Jog.
VOL (volume)
indicator flashes.
Muting the sound
1 Press PWR/MUTE briefly.
To restore volume, briefly press PWR/MUTE again.
Smart Jog
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Adjusting sound
You can select the following modes for adjusting sound
depending on the music you listen to: BASS (low
frequencies), TRE (high frequencies), BAL (left/right),
FAD (front/rear) and H-BASS (high bass)
1 Press SEL repeatedly to select the mode to be
adjusted.
Pressing SEL cycles through the modes. The
selected mode's indicator flashes (except for H-
BASS).
2 Turn the Smart Jog to increase or decrease the level
for the selected mode (except for H-BASS).
In H-BASS mode, turn the Smart Jog to select on or
off.
Note
Adjust the level or select on/off within 5 seconds, or the
selected mode will return to previous state.
Aligning the source levels
(Source Level Adjuster)
Volume may vary each time you change the source
mode. In this case, you can align each source mode's
volume to almost the same level.
1 Press FNC repeatedly to select the desired mode.
2 Press DISP while pressing SEL.
"LA 0" appears in the display.
3 Turn the Smart Jog to adjust the level.
Note
Adjust the level within 5 seconds, or the selected mode
will be canceled.
Restoring the factory settings
1 Turn off the unit.
2 Press and hold DISP until "LA --" appears in the
display.
Note
You can restore the factory settings only for VOL, BASS,
TRE, BAL, FAD, and H-BASS, and aligned source
volume levels.
Muting button beep sounds
1 Turn off the unit.
2 Press and hold SEL until "BEEP" appears in the
display.
3 Turn the Smart Jog to select on (level indicators
appear) or off (level indicators disappear).
4 Press and hold SEL until the unit turns off.
Stereo indicator
Local indicator
Setting the clock
1 Press DISP to have the clock displayed.
If the clock indication is already displayed, skip this
step.
2 Press and hold DISP until the clock indication flashes
in the display.
3 Press TUNEi (to set hour) or TUNEk (to set
minute) and turn the Smart Jog.
4 Press DISP.
Displaying the clock
1 Press DISP.
To return to the former display, press DISP again.
RADIO OPERATION
Tuning in to a station
(Seek/Manual Tuning)
1 Press FNC repeatedly to select the desired band
(FM1, FM2, FM3, AM1 or AM2).
2 Press TUNEi (to move to higher frequencies) or
TUNE
k (to move to lower frequencies) to tune in to
a station.
"ST" appears in the display when an FM station is
broadcasting in stereo, and receiving conditions are
good.
Seek Tuning and Manual Tuning
· Press and hold TUNE
i or TUNEk until Seek
Tuning starts.
The unit locates a station automatically (Seek
Tuning).
· Press TUNE
i or TUNEk repeatedly to search for
a desired station while increasing or decreasing
the frequency step by step (Manual Tuning).
To stop Seek Tuning, press TUNE
i or TUNEk
again.
Band indicator
Frequency indication


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Monaural mode
When FM signals become weak, or FM reception
becomes poor, the unit automatically switches to
Monaural mode to reduce noise.
Local mode
Local mode allows you to tune in only to strong stations
during Seek Tuning.
1 Press LO before you start Seek Tuning.
"LO" appears in the display.
To return to Distant mode, press LO again.
"LO" disappears and the unit tunes in to all receivable
stations.
Using preset stations
You must preset stations before you can tune in a station
using preset station number buttons.
Preset station
number
Presetting stations automatically
(Auto Memory)
1 Press FNC repeatedly to select the desired band
(FM1, FM2, FM3, AM1 or AM2).
2 Press and hold PS/A.ME until automatic presetting
starts.
The unit automatically stores up to 6 stations for
each band.
After completion of automatic presetting, the unit
tunes in to the station stored on preset station button
1.
To cancel automatic presetting, press PS/A.ME again.
Checking the preset stations (Preset Scan)
1 Press PS/A.ME briefly.
Each preset station will be tuned in for 5 seconds in
order.
To cancel Preset Scan, press PS/A.ME again or any
preset station button.
Presetting stations manually
(Manual Memory)
1 Press FNC repeatedly to select the desired band
(FM1, FM2, FM3, AM1 or AM2).
2 Press TUNEi or TUNEk to tune in to a desired
station (see "Tuning in to a station," page 3).
3 Press and hold the desired preset station button until
the unit beeps.
Note
A newly preset station replaces the station on the same
band that was previously stored on that preset station
button.
Tuning in to a preset station
1 Press FNC repeatedly to select the desired band
(FM1, FM2, FM3, AM1 or AM2).
2 Press the preset station button on which the desired
station is stored.
Active tuning reception control (ATRC)
The unit automatically suppresses FM noise caused by
vehicle movement, and maintains sound quality.
Using the timer
(My Information)
You can schedule the radio to activate for daily radio
programs. The unit automatically turns on and off in
Radio mode at the scheduled times.
Preset station buttons 1 ­ 6
MY INFO indicator
Smart Jog