Radio, Stereo, and Compact Disc: Description and Operation

The 2000 series radio features an electronically tuned receiver (ETR), vacuum fluorescent display for radio frequency and digital clock display, and seek and scan tuning. The UM6 radio features a cassette tape deck with automatic reverse.

The available radio systems are as follows:
1. UM7-ETR with AM/FM Stereo, Seek/Scan, and Clock.
2. UM6-ETR with AM/FM Stereo, Seek/Scan, Dolby, Auto-Reverse Cassette, and Clock.

HANDLING ELECTROSTATIC DISCHARGE
(ESD) SENSITIVE PARTS




Many solid state electrical components can be damaged by electrostatic discharge (ESD). Some will display a label, but many will not.

In order to avoid possibly damaging any components, observe the following:
1. Body movement produces an electrostatic charge. To discharge personal static electricity, touch a ground point (metal) on the vehicle. This should be done any time you:
- Slide across the vehicle seat.
- Sit down or get up.
- Do any walking.
2. Do not touch exposed electric terminals on components with your finger or any tools. Remember, the connector that you are checking might be tied into a circuit that could be damaged by electrostatic discharge.
3. When using a screwdriver or similar tool to disconnect a connector, never let the tool come in contact with or between the exposed terminals.
4. Never jumper, ground, or use test equipment probes on any components or connectors unless specified in diagnosis. When using test equipment, always connect the ground lead first.
5. Do not remove the solid state component from it's protective packaging until you are ready to install the part.
6. Always touch the solid state components package to a ground before opening. Solid state components can also be damaged if:
- They are bumped or dropped.
- They are laid on any metal work benches or near components that operate electrically, such as a TV, radio, or oscilloscope.

DESCRIPTION OF OPERATION

Radio Controls
Upper Knob and Balance Control Ring
Turn the upper knob to turn the system on and off.

Turn the knob to the right to increase volume and to the left to decrease volume.

The control ring behind the knob is the balance control. Turn the ring to the right to move speaker balance to the right. Turn it to the left to move speaker balance to the left.

If the radio is off, pressing the upper knob will recall the time of day. When the ignition is off, pressing the upper knob will recall the time of day.

If the tape player is on, pressing the upper knob will cause the direction of tape play to reverse.

Recall
If the radio is on, pressing the upper knob will alternately cause the VF display to change from time of day to radio frequency display.

Lower Knob and Fader Control Ring
Turn the lower knob to manually select radio stations. When the radio is on and the tape player (if equipped) is off, press the lower knob to choose between the AM or FM band.

The control ring behind the lower knob fades the sound between the front and rear speakers.

Set Button
The SET button has two functions. Use it in conjunction with the four radio station preset buttons to program radio frequencies into the memory locations. Its second function is to set the clock display. Refer to Clock for detailed instructions on setting the time of day display. Refer to Radio Frequency Preset Buttons for instructions on presetting AM and FM radio stations.

Bass and Treble Controls
Slide the TREBLE control up to increase or down to decrease treble. Slide the BASS control up to increase or down to decrease bass (UM6).

Radio Frequency Preset Buttons
To preset four desired AM stations and four FM stations:
1. Select AM or FM, and tune in the desired station.
2. Press SET button. The SET indicator will light.
3. Press a station button. The SET indicator will go out. The radio will then tune in the selected station whenever that button is pressed.

The 2000 series receivers with four station buttons have the ability to store up to seven AM and seven FM stations.










To preset three additional AM stations and three additional FM stations on some radios:
1. Tune in the desired station.
2. Press SET and within 5 seconds press any two adjacent buttons at the same time.

The radio will now tune in the pre-selected station when the button, or button pair is pressed.

If electrical power is interrupted (by a blown fuse, discharged battery, etc.), the station(s) must be reset.

Frequency Band Ranges
The frequency band range for the 2000 series radio on the AM band is 530 KHz to 1710 kHz in 10 kHz increments.

The FM frequency band range is 87.7 MHz to 107.9 MHz in 200 KHz increments.

Automatic Dynamic Noise Reduction
UM6 radios have automatic Dynamic Noise Reduction (DNR). This system reduces background hiss on radio stereo broadcasts as well as on cassette tapes. DNR is a registered trademark of National Semiconductor Corporation.

Clock
To set the clock display, the ignition lock cylinder must be in the ACCESSORY or RUN position. The radio may be on or off.

To set the HOUR portion of the clock display, press the SET button. Within 5 seconds, press the SCAN button and hold it in until the correct hour is displayed.

The MINUTE portion of the clock display is set by pressing the SET button and within 5 seconds, pressing the SEEK button and holding it in until the correct minute(s) are displayed. If the SET button is pressed while the radio is turned on, the radio frequency will be displayed. The time of day will display when the SEEK and SCAN buttons are pressed.
When the SET button is pressed, the SET indicator will appear on the display for approximately 5 seconds. If the SCAN or SEEK button is pressed after the SET button is pressed and before the SET indicator goes out, the SET indicator will stay on while the clock is being set and then will go out about 5 seconds after the SCAN or SEEK button has been released.

If electrical power is interrupted (by a blown fuse, discharged or disconnected battery, etc.), the clock must be reset after power is restored.

Seek and Scan (Radio)
The 2000 series radio system has the Seek and Scan feature for electronic station tuning.

If you press the SEEK button, the radio will tune into the next strong station that has a higher frequency than the previous station selection. When the SCAN button is pressed, the radio will move to the next strongest station of a higher frequency. It will pause there a few seconds, then scan to the next strongest station. The radio will continue scanning new stations until the SCAN button is pressed again. When the radio reaches the upper end of the band, it will return to the low end and resume scanning.

Cassette Tape Player
To play a tape, the ignition lock cylinder must be in the ACCESSORY or RUN position and the receiver/tape player must be turned on. Insert the tape squarely through the door, exposed tape side of the cassette first. When the tape is fully inserted, the AM/FM portion will turn off and the tape will begin playing.

Tape Direction Indicators (UM6)
Indicator arrows show the direction or the side of the tape being played. When the left indicator arrow is on, the top side of the tape is being played. The tape direction is to the left. When the right indicator arrow is on, the bottom side of the tape is being played. The tape direction is to the right.

To advance the tape, press the forward FWD button. To reverse the tape, press the reverse REV button. To resume tape play, from fast forward or reverse, press the STOP-EJECT button. When the tape reaches the end of a side, it will automatically reverse and play the other side of the tape. To resume listening to the radio or to eject the tape, press the STOP-EJECT button.

The cassette player is turned off by ejecting the tape, pressing the power PWR button, or by rotating the ignition lock cylinder to LOCK, OFF, or START. When this occurs, the tape player will either eject the cassette automatically or the internal tape drive and roller will retract automatically. This protects the tape player and cassette tape.

AM/FM STEREO WITH COMPACT DISC AND AUTOMATIC TONE CONTROL

Pwr-Vol
In order to turn the system on and off, press this button. In order to increase the volume, turn the knob clockwise. Turn the knob counter-clockwise to decrease the volume. The PWR-VOL knob rotates continuously.

Recall
In order to display the time with the ignition off, press this button. In order to display the station while the radio is playing, press this button.

SCV
The factory installed CD player has a feature called Speed Compensated Volume (SCV). In order to activate the SCV:
1. Set the volume at the desired level.
2. Rotate the control ring located behind the upper knob clockwise to adjust the SCV. The radio will automatically adjust the volume to overcome noise at any speed. The volume level will remain the same to you as you drive. In order to deactivate the SCV, turn the control knob all the way down. The detents on the control ring allow for increased volume compensation at a faster rate of speed.

FINDING STATIONS

AM-FM
In order to switch between AM, FM1 and FM2, press this button.

Tune
1. Press this knob lightly.
2. Turn the knob to choose stations.
3. Push this knob back when not in use.

Seek
In order to tune to the next higher station, push the right arrow down. In order to tune to the next lower station, push the left arrow down. The sound will mute while seeking.

Scan
In order to activate the scan feature, press and hold the SEEK button for 2 seconds until SCAN appears. The receiver will stop at each station momentarily until you press the button again.

Push Buttons
The six numbered push-buttons allow you to set up to 18 stations as follows:
1. Six AM stations
2. Six FM1 stations
3. Six FM2 stations

Setting Stations
1. Press the AM-FM button to select the desired band.
2. Tune to the desired station.
3. Press AUTO TONE to select the setting you prefer.
4. Press and hold one of the four push buttons. The sound will mute and return. Release the button.
5. Repeat the steps for each push button.

P. Scan
The preset scan button allows you to scan through the preset stations. In order to select AM, FM1 or FM2, press the MODE button. In order to scan the stations, press the P. SCAN button. The P. SCAN indicator will illuminate on the display. In order to stop scanning, press the P. SCAN button again. The P. SCAN feature will skip stations that are too weak in your location, but stop if the station is a preset before advancing.

Setting the Tone

Bass
In order to adjust the bass:
1. Press the knob lightly.
2. To increase bass, turn the knob clockwise.
3. To decrease bass, turn the knob counter-clockwise

The AUTO TONE will change to MAN when turning the knob. In order to place knob in original position, push the knob lightly. In order to adjust the treble:
1. Press the knob lightly.
2. To increase treble, turn the knob clockwise.
3. To decrease the treble, turn the knob counterclockwise.

The AUTO TONE setting will change to manual when turning the knob. In order to place knob in original position, push the knob lightly.

Auto Tone
The AUTO TONE button allows you to select from the five preset equalization settings and customize it. In order to select a preset, press this button. The available presets are CLASSIC, NEWS, ROCK and JAZZ. In order to return to manual mode, press and release button until MAN appears on the display.

Adjusting the Speakers

Bal
In order to adjust the balance:
1. Press the knob lightly to release it.
2. To adjust more sound to the right, turn the knob clockwise.
3. To adjust more sound to the left, adjust the knob counter-clockwise.
4. To balance sound equally between right and left, place knob in the middle position.
5. Push knob lightly to original position.

Fade
In order to adjust the fade Press the knob lightly to release it. To adjust sound to the front, turn the knob clockwise. To adjust sound to the rear, turn the knob counter-clockwise. To balance sound equally between front and rear, place knob in middle position. Push knob lightly to return to original position.

Playing a Compact Disc

Pwr
In order to turn the system on, press this button or insert a CD with the ignition on. In order to play a disc:
1. Insert disc part way.
2. The player will automatically pull it in.
3. The disc will begin to play.

The CD symbol and CD will appear on the display. When a disc comes back out and ERR is displayed, the following could be true:
1. You are driving on a very rough road.
2. The disc is upside down.
3. The disc is dirty, scratched, or wet.
4. It is very humid.
5. The disc player is very hot.

In order to make the ERR display turn off, press the RECALL button.

Prev (1)
In order to search for the previous selection
1. Press PREV.
2. Press the left seek arrow.

In order to search beyond the last selection
1. Hold the button down.
2. Press it more than once.

Rdm (2)
In order to play tracks randomly, press this button. The RANDOM message will appear on the display. In order to return to normal play, press RDM again.

Next (3)
In order to search for the next selection
1. Press NEXT.
2. Press the right SEEK arrow.

In order to search beyond the next selection
1. Press the button more than once.
2. Hold the button down.

Rev (4)
In order to back up the disc to a desired point, press and hold the REV button. In order to resume normal play, release the button.

Fwd (6)
In order to advance rapidly within a track, press and hold this button. In order to resume normal play, release the button.

AM-FM
In order to play the radio while listening to the CD, press this button. When this button is pressed, the CD symbol will continue to be displayed and the word CD will be replaced with AM, FM1 or FM2.

Recall
In order to view what track is playing, press this button. In order to view how long the CD has been playing that track, press the button again within 5 seconds. In order to return to the time display, press the button again.

CD Aux
In order to switch between the player and the radio when a disc is playing, press the AM - FM button. In order to return to the player, press the CD AUX button.

Eject
In order to eject the disc from the player, press this button. When a disc is left sitting in the player, it will be automatically pulled into the CD player. When the ignition is off, press this button to load a disc.