This section contains the descriptions of the following 2 audio systems:

Power Button (PWR) - On/Off Switch

Important: When jump starting the vehicle, turn off the radio in order to avoid damage to the sound system.

Pressing the PWR knob alternately turns the radio ON or OFF.

Volume Control (VOL)

A single multi-function rotary/push control provides the following functions:

The volume control portion of the switch is a continuous rotary detent type with 36 detents per revolution. You may increase or decrease the volume over a range of 64 possible steps. The volume function will not be available during radio conditions that do not permit audio output such as actively seeking/scanning in tuner or tape modes. Each momentary button closure causes the volume to increase or decrease by 1 step. Pressing either one of these buttons causes the volume to change at a rate of 12 steps per second.

Stereo Indicator

ST displays whenever a stereo broadcast is received.

Tune Control

The tuning control is a continuous rotary knob with 20 detents per revolution. Press the knob lightly in order to extend the knob to the out position. Turn the controls in the following directions in order to tune the receiver:

Adjusting the tuning control stops the SEEK and the SCAN functions. Tuning then continues from the frequency where you last stopped the SEEK or the SCAN function.

AM/FM Switching

The AM/FM button is a sequencing (push-push) type that toggles between the AM, FM1 and FM2 bands. The button is active anytime the unit is on.

Recall Button (RCL)

Pressing the RECALL button alternates the display between the following functions:

With the ignition in the OFF position, pressing the RECALL button briefly turns on the display indicating the time of day. The RECALL button has no effect while the ignition is ON if the radio is OFF, because the time of day is already displayed.

Bass and Treble Controls (BASS) (TREB)

This control is a 270 degree rotary pop-out/pull knob with the center detent that is shared between BASS and TREB. Use these controls in order to adjust the system's audio frequency response. Operate the BASS function by first pressing and then releasing the knob to the out position. The BASS function affects only the lower audio frequencies. The BASS function has a center frequency of 60 Hz.

In order to operate the TREB function, refer to the following steps:

1. Press and release the knob to the out position.
2. Pull the knob to the fully extended position.

The TREB function affects the high audio frequencies. The TREB function has a center frequency of 10 kHz.

The center position of a given control indicates the flat response over that particular frequency range. Moving a control to the right of center position produces boost. Moving a control to the left of center position produces a cut in frequency range related to that control. All units incorporate a loudness feature that automatically increases bass bias at low listening levels.

On the UPO model with auto tone control (ATC), any adjustment of the controls activates the MANUAL tone control (ATC) mode. The adjustment of the controls establishes the MANUAL ATC mode as default. The MANUAL tone mode displays on the ATC models. The Bass and Treble changes do not affect the radio display on non-ATC models. Press the knob back into the stored position when not in use.

Fade Control (FADE)

The FADE control is 270 degree rotary pop-out/pull knob with a center detent that is shared with the balance function. The control adjusts the relative volume between the front and the rear speakers. The control operates the following way:

1. Press and release the knob to the out position.
2. Pull the knob to the fully extended position.
3. Rotate the knob clockwise in order to shift the volume from the rear speakers to the front speakers.
4. Rotate the knob counter-clockwise in order to shift the volume from the front speakers to the rear speakers.

At full rotation in either direction, the audio is eliminated from the corresponding front channels or the rear channels.

BOSE® Applications

When you use the Spatial Fade feature the control performs the same function as described above except that it mainly affects the high audio frequencies. At full rotation in either direction, as with the standard fade control, audio will be completely eliminated from the corresponding front or the rear channels (except for the subwoofer). Fade to rear and fade to front for all but the last step has no affect on the subwoofer audio. The last step of fade to front cuts the audio to the subwoofer completely.

Balance (BAL) Control

The balance (BAL) control is a 270 degree rotary pop-out/pull knob with a center detent that is shared with the fade function. The control operates in the following manner:

1. Press and release and the knob to the out position.
2. Rotate the knob clockwise to shift the volume from the left speakers to the right speakers.
3. Rotate the knob counter-clockwise to shift the volume from the right speakers to the left speakers.

At full rotation in either direction, the audio is eliminated from the corresponding left and right channels. This control is active in either the in or out position.

The BOSE® models have the same feature functionality for all channels except the subwoofer output. The subwoofer has the left and the right audio summed together. The subwoofer has the audio cut completely from the opposite channel at the last left and the last right balance steps only. Intermediate balance adjustments have no effect on the subwoofer output level. The radio display is not affected by balance changes.

Station Preset Buttons

The following 15 presets are available:

The station preset buttons serve a dual role with cassette and compact disc player functions. When in the receiver mode, the preset buttons function as station memories. When playing a CD or a tape, the preset buttons perform the CD or tape deck functions. Refer to Cassette Tape Player Description or Compact Disc (CD) Player Description.

1. Pressing and releasing any of the preset buttons will recall that particular frequency, ATC setting (if applicable) and channel number.
2. The audio will mute and any displayed channel number indicators will extinguish while you are pressing the button.
3. The unit will then tune to the desired preset upon release of the push-button.
4. In order to change stations, release the preset button within 2 seconds. If you exceed this time, the set mode will activate.

Station Preset Setting

In order to set a desired station, complete the following steps:

1. Select the desired band, AM or FM.
2. Tune in the station you want.
3. Press the TONE button (UPO only) in order to set the equalization setting for the station.
4. Set the ATC setting, if applicable.
5. Press and hold one of the numbered buttons for at least 2 seconds.

During the time-out period, the audio will mute and no channel number will display. After 2 seconds the audio returns and the channel number displays, signaling that the radio has stored the new preset frequency.

6. Release the button.

The display shows the frequency and the channel number for 5 seconds after you have created the new preset.

Seek Button

When you use the seek function, refer to the following steps:

The following are additional features of the SEEK button for the U1F radio only:

The seek UP portion of this function is replicated on the steering wheel control.

Scan Button

The SCAN push-button is a momentary type control that is shared with the preset scan feature. To use the scan button, refer to the following steps:

Preset Scan

Press the SCAN button for a minimum of 2 seconds in order to activate the preset scan mode. This will cause the receiver to select the last preset selection initiated by the radio preset buttons or the SWC program button (if applicable). If the receiver is presently tuned to a preset that was selected with either one of these buttons, then the receiver will increment to the next preset selection. The sound returns while the tuner pauses for 5 seconds before again muting and going to the next preset. The associated ATC mode (if applicable) will also be selected along with the preset.

Setting the Time of Day

Set the time-of-day by using the HR (hours) and MN (minutes) push-buttons. An initial delay of 2 seconds occurs after the first button depression before the unit enters the time set mode and the time advances. When the time set mode begins, the display will show time of day along with an A (AM) or P (PM).

Auto Tone Control (TONE)

On the UPO model, the TONE button is a sequencing (push-push) type switch that switches between predetermined frequency response curves and a manual mode (BASS & TREB controls functional). The following sequence occurs in a continuous loop configuration:

1. JAZZ
2. VOCAL
3. POP
4. ROCK
5. CLASSICAL
6. MANUAL

When you select a specific ATC mode with the TONE button, the ATC mode becomes the default. The ATC setting is stored along with the receiver preset frequencies. Selecting the preset frequency recalls the ATC setting.

Cassette Tape Player Description

The cassette player incorporates a power end load cassette mechanism with an illuminated slot opening. Partially insert the tape through the door in the front of the trim plate. The mechanism completes the loading cycle automatically.

After loading, the cassette player automatically senses the tape cartridge for either a metal tape or CR02 usage. The player makes the appropriate adjustments and the cassette is ready to play.

EJECT Button

Pressing the EJECT button performs the following functions:

The eject function is operative from all modes of cassette operation and while the ignition is in the OFF position.

Fast Reverse Button (REV)

The REV (fast reverse) button is a non-latching momentary contact control that serves a dual function with the radio preset number 1. Pressing the REV button moves the tape in the reverse direction at a rapid speed until you perform 1 of the following actions:

During rewind, the audio reverts to the radio. If an operator change does not occur, rewinding continues until the beginning of the tape is reached. The unit then returns to the play mode. A program arrow blinks while in the fast reverse mode.

Fast Forward Button (FWD)

The FWD (fast forward) button is a non-latching momentary contact control that serves a dual function with the radio preset button number 2. Pressing the FWD button moves the tape in the forward direction at a rapid speed until you perform 1 of the following actions:

During fast forward, the audio reverts to the radio. If an operator change does not occur, fast forward continues until the end of the tape is reached. The unit then returns to the play mode. A program arrow blinks while in the fast forward mode.

Seek Button (SEEK)

The SEEK push-button is a rocker type switch which provides seek up or down of the tape selections in the direction pressed. A blank spot of a 3 second duration is required in order for the deck to recognize a pause between selections.

Program Button (PROG)

The PROG (program) push-button is a momentary contact control that serves a dual function with the radio preset button number 3. Pressing the PROG button causes the tape deck to reverse play direction and changes the indicator arrow direction.

Dolby® Noise Reduction

The Dolby® Noise Reduction button is a non-latching momentary contact control that serves a dual function with the radio preset button number 4. Pressing this control in the tape mode switches the Dolby® noise reduction off or on. A Dolby® symbol appears in the display to indicate that the function is active. Dolby® noise reduction is only available in tape mode.

Recall Button (RCL)

Press the RCL (recall) button in order to display the current track number. Pressing the button again within 5 seconds displays the length of time that the current track has been playing. Pressing the button a third time within 5 seconds displays the time of day.

Compact Disc (CD) Player Description

Notice: Do not attempt to insert any disc into a CD player except those discs which display the symbol shown on the disc label illustration. Insertion of a disc which does not display this symbol, such as the 76 mm (3 in) disc, may cause damage to the CD player and/or disc.

Power Cycling

If the CD is playing when the ignition voltage is turned OFF, the unit resumes playing from the position reached prior to power down when the ignition is turned ON. The CD display shows track selected and the CD IN light displays.

When the radio is turned on, the following actions occur:

Priority Structure

The last function selected is the function that has priority. If you insert a compact disc while the radio is turned on the radio shifts to the CD mode and starts to play the CD.

CD Load

The mechanism automatically completes the loading cycle after you insert the CD (1) approximately ½ of the way. The mechanism begins to play track 1 on the disc.

The CD Load function is available at all times whenever a cartridge (1) is not presently loaded.

CD Eject

The CD eject function is always active, you may eject the disc (1) with the ignition switch in the OFF position. When the radio is ON, pressing the EJECT button causes the radio to switches to the previous radio function and ejects the CD

At any time, an ejected CD is not removed from the CD player within 25 seconds the CD will automatically reload.

Play

The TAPE/CD button is a sequencing momentary contact type switch that causes the unit to enter the playback mode.

For single playback CD or dual playback units with no cassette loaded:

For dual playback units with both CD and cassette loaded:

Pressing the TAPE/CD button with a cassette active and a CD loaded will cause:

Recall Button (RCL)

Press the RECALL button, when equipped, in order to display the current track number.

Press the button a second time within 5 seconds in order to display the length of time that the current track has been playing

Press the button a third time within 5 seconds in order to display the time of day.

Stop

The following operations stop the CD player:

Seek

The SEEK push-button is a rocker type switch which seeks up or down the CD tracks in the direction pressed. This button is shared with the frequency seek function in the radio mode and with the cassette seek function in dual playback applications.

Pressing the top portion of the rocker causes the following actions:

Each successive momentary press of this button will increment the track number by one.

Pressing the bottom portion of the rocker after 8 seconds of a track causes the following actions:

If you press the bottom portion of the rocker within the first 8 seconds of a track, the following actions occur:

Every momentary press of this button will decrement the track number by one.

Scan

The SCAN push-button is a rocker type switch which provides forward scanning of CD selections. This button is shared with the frequency scan function in the radio mode and with the cassette scan function in dual playback applications.

Pressing the SCAN button causes the following actions:

For remote CD changer applications, the SCAN function operates between the tracks on all of the available discs.

Random (RDM)

The RDM (random) push-button is a momentary-contact control. The RDM button serves a dual function with a radio preset button number 5. Press the RDM button in the CD play mode stops playing the current selection. The CD player then chooses a random playback order then resumes the play in a random order. Press the RDM button at any point during random playback to return to the normal sequence beginning with the current track.

For remote CD player options, the RDM feature operates between the tracks on all of the available discs.

Fast Reverse (REV)

The REV (fast reverse) button is a non-latching momentary contact control and serves a dual function with radio preset number 1. The button allows reverse movement within the CD. When activated, the audio level reduces by 6dB and the CD plays in the reverse direction at a rate of 6 times normal speed.

During REV mode the system displays the amount of elapsed time within the selected track.

Fast Forward (FWD)

The FWD (fast forward) button is a non-latching momentary contact control and serves a dual function with radio preset button number 2. The button allows forward movement within the CD. When activated, the audio level reduces by 6 dB and the CD plays in the forward direction at a rate of 6 times normal speed.

Compression (NR)

The compression function processes the audio signal and makes quieter passages louder. This allows the music to be heard in an automotive environment. The NR button serves a dual function with one of the radio preset buttons. Pressing this control in the CD mode toggles the NR function on or off. The unit will stay in the selected mode until one of the following conditions occurs:

The COMP (compression) symbol displays while this feature is in turned on and is only active in the CD mode.

Disc Select (CD Changer)

For CD changer applications, the radio PROG (program) button functions as disc select when you are in the CD mode. Each momentary button press increments the CD number by one, starting from the presently selected CD or at the lowest numbered CD, if a CD had not been previously selected. You can select only the cartridge slot numbers that have CDs installed in them.

During the selection process the following actions occur:

The disc and track numbers always display simultaneously. The disk and track numbers continue to display for 5 seconds after you select a disc.

Error (ERR) Detection

The unit indicates an ERR in the display if any of the following conditions exist:

The unit switches to the radio mode and ejects the CD. The ERR display remains lit for 5 seconds.