In order to play the radio, rotate the PWR-VOL knob when the ignition switch is in the ON position.

The VOL knob adjusts the volume up or down. Rotate the volume knob clockwise in order to increase the volume. Rotate the volume knob counter-clockwise in order to decrease the volume. Relative volume is displayed unless BAL, FADE, BASS, or TREB are adjusted.

Press the RCL button in order to activate the recall mode for 5 seconds. If the ignition lock cylinder is in the OFF or LOCK position, the time of day display will be recalled If the radio is on when the RCL button is pressed, the time of day display will be replaced (for 5 seconds) by the radio recall display. If the CD player is on when the RCL button is pressed, the track and relative time of play (CD recall display) will be recalled for about 5 seconds.

The 5 radio frequency preset buttons (numbered 1-5) are located on the button area of the U1C radio face. These buttons have dual functions. When the radio is playing, press 1 of the 5 buttons in order to tune into the preset station frequency (AM or FM). This display will change from the time of day to the radio frequency display for about 5 seconds. Then the time of day display will return. When the compact disc player is playing, pressing preset button 2-5 will enable the function per the label above the button. These CD player functions are explained later.

When the unit is in the radio play mode, the 5 buttons are backlit. When the unit is in the CD play mode, the buttons will not be backlit. The button graphics will be seen.

Perform the following steps in order to preset 5 desired AM stations and 5 FM stations:

1. Tune in the desired station.
2. Press the SET button.
3. Within 5 seconds, press the desired station button.

If electrical power is interrupted (by a blown fuse, a discharged battery, etc.), reset the stations.

The SET button has dual functions. The SET button is used (as above) in conjunction with the 5 radio station preset buttons in order to program radio frequencies into the memory locations. The SET button also sets the clock. In order to set the clock, the SET button is used in conjunction with the SEEK and SCAN buttons. Refer to Clock for detailed instructions on setting the clock display.

1. In order to set the clock display, the ignition lock cylinder must be in the ACCESSORY or RUN position. The radio may be on or off. If the radio is on, the display must be on the time of day. The clock cannot be set when the display is the radio frequency display.
2. The MINUTES portion of the clock display is set by pressing the SET button. Within 5 seconds, press the SEEK button and hold in the button until the correct minutes are displayed. Press the right side of the SEEK button in order to increase the minutes. Press the left side of the SEEK button in order to decrease the minutes.
3. The HOUR portion of the clock display is set by pressing the SET within 5 seconds, press the SCAN button and hold it in until the correct hour is displayed. When the SCAN button is released, the seconds counter of the clock automatically becomes zero, enabling the next minute to contain a full 60 seconds. This feature allows the clock to be synchronized to the nearest second.

When the SET button is pressed, the SET indicator will appear on the display for approximately 5 seconds. If the SCAN or SEEK buttons are pressed after the SET button is pressed and before the SET indicator turns off, the SET indicator will stay on while the clock is being set and then will turn off about 5 seconds after the SCAN or SEEK button has been released.

If electrical power is interrupted (by a battery disconnection, a fuse removal, etc.), reset the clock display after power is restored.

The U1C and UP0 radio has the Automatic DNR® (Dynamic Noise Reduction) which reduces background hiss on AM, FM, and FM stereo radio broadcasts.

When a compact disc is played, the automatic DNR® function is disabled. When the unit is in the radio play mode the automatic DNR® function is enabled. DNR® is a registered trademark of National Semiconductor Corporation.

In order to increase the volume of the radio or CD player, rotate the volume knob (upper) to the right until the desired volume is reached. The arrows in the volume level display will increase to the right as the volume increases.

In order to decrease the volume of the radio or the CD player, rotate the volume knob to the left until the desired volume is reached. The arrows on the volume level display will decrease to the left as the volume decreases.

In order to manually tune in a higher radio frequency, turn the tune knob (the lower knob) to the right. When the high end of the radio band is reached, the radio will return to the lowest band frequency and resume tuning upward. The radio frequency will appear on the display while tuning.

In order to manually tune in a lower radio frequency, turn the tune knob to the left until the desired frequency is reached. When the low end of the radio band is reached, the radio will return to the highest band frequency and resume tuning downward. The radio frequency will appear on the display while tuning.

Activate the radio seek-up function by pressing the right side of the SEEK button while the radio is playing. After pressing the right side of the SEEK button, the radio recall display appears and the receiver seeks to the next higher station of sufficient signal strength and stops on that station. The radio recall display remains for about 5 seconds after the seek up function has been completed. Then the time of day display returns. When the top of the band is reached (1710 Hz-AM or 107.9 Hz-FM), the seek-up function continues at the bottom of the band (530 Hz-AM or 87.7 Hz-FM).

Activate the radio seek-down function by pressing the left side of the SEEK button while the radio is playing. After pressing the left side of the SEEK button, the following actions occur:

1. The radio recall display appears.
2. The receiver seeks to the next lower station of sufficient signal strength.
3. The receiver stops at that station.

The radio recall display remains for about 5 seconds after the seek-down function has been completed. Then the time of day display returns. When the bottom of the band is reached (530 Hz-AM or 87.7 Hz-FM), the seek down function continues at the top of the band (1710 Hz-AM or 107.9 Hz-FM).

Activate the radio scan function by pressing the SCAN button while the radio is playing. The radio recall display will replace the time of day display and the scan SC indicator will illuminate. The receiver will seek to the next higher station of sufficient signal strength, pause on that station for about 5 seconds, then seek to the next higher station of a higher frequency. When the end of the band is reached, the receiver will resume scanning in the same direction at the opposite end of the band. The scan function may be canceled by pressing the SCAN button a second time, by any tuning operation, pressing the recall (RCL) button, the AM-FM knob, or by turning the radio off. The radio recall display remains on for about 5 seconds following the cancellation of the scan function, then the time of day display returns.

In order to change from the AM band to the FM band, press the tuning knob. Subsequent presses of the tuning knob will alternate the radio bands between AM and FM.

In order to decrease the volume of the rear speakers relative to the volume of the front speakers, rotate the control ring behind the lower knob until the desired volume level between the rear and the front speakers is reached.

When the fade control ring is rotated, the relative fade position will appear on the radio display.

In order to move the speaker balance, rotate the control ring behind the upper knob until the desired balance is reached. When the balance control ring is rotated, the balance position will appear on the radio display.

In order to increase the amount of bass (low range frequency), press and hold the BASS button until the desired level of bass is reached. In order to decrease the amount of bass, press and hold the BASS lower button until the desired level of bass is reached.

Press the center of the BASS button in order to return the bass level to the center position.

When the BASS button is pressed, the bass level indicator will appear on the radio display.

In order to increase the amount of treble (high range frequency), press and hold the TREB upper button until the desired level of treble is reached.

In order to decrease the amount of treble, press and hold the TREB lower button until the desired level of treble is reached.

Press the center of the TREB button in order to return the treble level to the center position.

When the TREB increase or decrease button is pressed, the treble level indicator will appear on the radio display.

In order to play a 120 mm (4.75 in) compact disc, perform the following steps:

1. Turn ON the radio.
2. Load the disc into the CD player slot.

Do not use mini-discs that are called singles. They will not eject. The disc label must face up (playing side down). The radio audio will mute and the disc will begin playing at the beginning of track number 1. When a disc is loaded into the player, the CD indicator will illuminate on the CD player display.

When the end of the disc is reached, and no operator commands are issued, the disc will play again, beginning on track 1. This process will continue until the disc is stopped or ejected.

On systems with a CD changer, a 60 second delay occurs before playing commences between CDs.

The disc will eject if the following conditions exist:

Audio will revert to the radio when the eject button is pressed.

If the disc is not removed from the player within 30 seconds after the disc has been ejected, the disc will reload automatically to protect the disc. This occurs if one of the following conditions exist:

Pressing the AT/PL button will alternate the CD player between stop and play. It will stop the disc play if the disc is playing and reverts to the radio mode, or it will resume disc play at the original stopping point if the disc is stopped.

Pressing the NEXT button while in the CD mode causes the player to mute and seek to the next track on the disc. Pressing the button repeatedly causes the target track number on the CD player to increase once per press of the button. The CD player will seek the displayed track, This feature will wrap to track number 1 when the target track exceeds the highest track available on the disc.

Pressing the PREV button while the CD player is in the CD play mode causes the player to mute and seek the beginning of the current track if the current track has been playing longer than 8 seconds. If the current track has been playing for 8 seconds or less, the player will seek the beginning of the previous track. Pressing the PREV button repeatedly will cause the target track to decrease once per press. The player will seek the displayed track and begin playing. This feature will wrap to the highest track available when the target track precedes track number 1.

Pressing the RDM button while a CD is playing will cause the current track to stop and then play the tracks (selections) back in a random order.

Pressing the RDM button at any point during random playback will cause playback to continue in the normal numeric sequence beginning with the track number that was being played when the RDM button was placed.

The REV and FWD buttons are functional only when the CD player is operating. Press and hold the FWD button in order to activate fast forward (FWD). The unit will play the disc in the forward direction at 6 times the normal rate with a reduced volume level. The time of day display will be replaced by the CD recall display and the CD relative time of play is updated at the accelerated rate. When the FWD button is replaced, the unit returns to the CD play mode. After 5 seconds the CD recall display is replaced by the TOD display. The CD indicator will illuminate in order to indicate the unit is in the CD play mode.

The fast reverse (REV) is activated by pressing and holding the REV button. The unit will play the disc in the reverse direction at six times the normal forward rate with a reduced volume level. The operation and display of the unit is similar to that described for fast forward except the CD recall display will update in a reverse sequence.

If the REV button is pressed at the beginning of a disc, the unit will not play while the button is held Play will resume at the beginning of track 1 as soon as the REV button is released. If the FWD button is pressed at the end of a disc, the unit will play at the beginning of track 1.

Pressing the COMP button while in the CD play mode alternately enables and disables the CD compression feature. When the compression function is enabled, the dynamic (volume) range of the audio signal is reduced by increasing the volume of the low volume passages to compensate for ambient (road) noise. This allows the listener to hear the low volume passages over road noise without increasing the overall volume above the desired level. The COMP indicator will appear on the display when the feature is functional.

Pressing the SCAN button advances the playback unit to the next track and begins playing the selection. If, after 10 seconds, the SCAN button is not pressed a second time, the unit advances to the next selection. This process repeats until the SCAN button is pressed a second time. The current track number is displayed during the scanning process. If the SCAN button is pressed a second time, the unit will continue to play from that point of the disc. The elapsed time will be displayed for 5 seconds followed by TOD and volume. If the last track on the disc is reached during the scanning process, the player will revert back to track 1 and begin scanning from that point. The SCAN indicator will be illuminated in the SCAN mode.

If SCAN is initiated while in the random mode, the unit will scan the tracks as described above in the random order that is selected. Scanning will continue from track to track until the SCAN button is depressed a second time.

If the laser focusing mechanism is impaired by any of the following conditions, ERR will appear on the display when the CD is loaded:

The unit will switch to the radio mode and automatically eject the CD. ERR will remain on the display for 5 seconds, along with the normal display information.

The unit's vacuum florescent (VF) display has step dimming when the headlamps or parklamps are turned on. The display intensity is controlled by the position of the instrument panel lamp dimmer control.

When no voltage is present at the parklamp input to the radio (parklamps and headlamps off), the display will be at 100 percent intensity and may not be dimmed by the instrument panel lamp dimmer control.