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.

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

The volume control portion of the switch is a continuous rotary detente type with 30 detentes per revolution. You may increase or decrease the volume over a range of 58 possible steps. The volume function will not be available during radio conditions that do not permit audio output. Actively seeking/scanning in tuner or tape modes does not permit audio output. During volume changes VOL will be displayed. The volume function is replicated on the steering wheel control with separate volume buttons. Each momentary button closure causes the volume to increase or decrease by one step. Pressing either one of these buttons causes the volume to change at a rate of 12 steps per second.

The letters ST display whenever a stereo broadcast is received.

The tuning control is a continuous rotary knob with 18 detentes per revolution. Turn the control in the desired direction in order to tune the receiver:

Frequency is either increased or decreased by one channel per detente.

Adjusting the tuning control will stop the SEEK and SCAN functions. Tuning will then continue from the last frequency where the SEEK/SCAN function stopped. The tuning function is replicated on the steering wheel controls with a SEEK up and down button, when equipped.

The Pontiac 100 series radio has the availability to adjust the tuner settings between Local, Normal, and Distant with the scan tool.

The following is a general description of the settings and what the listenable difference the consumer should expect to here in a vehicle:

None of these settings change the sensitivity of the radio. All settings have been aligned for maximum sensitivity. The settings above change the stereo blend and rolloff features of the audio processing only. None of these setting effect the strong signal performance of the radio. The radio incorporates and AGC system which is active at all times and will protect the radio under strong signals. Don't confuse these settings with the 'older' radio settings with the local/distance switch. The switch used in much older designs is changing the RF gain to prevent strong signal overload when driving close to radio towers. This has been replaced with the AGC system noted in note two and is completely automatic. The AM and FM stopping settings are not effected with the above changes There is no AM audio processing so these settings effect FM only

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

Pressing the AM/FM button while the radio is in the receiver mode changes the tuning to the frequency which was last selected on the next band. Pressing the AM/FM button while the radio is in the playback mode causes the unit to switch into the receiver mode at the last selected band and frequency. The following band switching sequence is from an initial state of FM1:

1. The first push toggles the receiver to FM2.
2. The second push toggles the receiver to AM.
3. The third push toggles the receiver back to FM1.

The AM / FM function is replicated on the steering wheel controls with a AM/FM button, when equipped.

The RECALL activator is the same as the TUNE knob. Press this activator briefly in order to recall the preset station being played. If you press this activator when the ignition is OFF, the clock will show for a few seconds. Pressing and holding the TUNE knob for 5 seconds on a non-preset station will save the equalizer setting for all not-preset station on that band.

The radio incorporates a manual adjustable equalizer (TONE button) and a programmable equalizer (EQ button) with 5 user presets.

The TONE button is a sequencing, push-push type that toggles between the Bass, Midrange and the Treble frequencies. Adjustments are made with the TUNE knob only while the SELECT indicator is illuminated and the requested frequency is shown in the display.

The TONE button will always cycle through BASS, MID, and TREB in this order when starting from a normal state.

The TUNE knob is used for adjusting the system's audio frequency response. Operate the Bass function by first pressing the TONE button and then turning the TUNE knob. This affects only the lower audio frequencies and has a center frequency of 50 Hz. Operate the MID (midrange) function by first pressing the TONE button a second time and then turning the TUNE knob. This affects only the middle audio frequencies and has a center frequency of 625 Hz. Operate the TREB (treble) function by first pressing the TONE button a third time and then turning the TUNE knob. This affects the high audio frequencies and has a center frequency of 12kHz. The center position of a given control indicates the flat response over that particular frequency range.

Moving a control to the right produces boost. Moving a control to the left produces a cut in frequency range. All units incorporate a loudness feature that automatically increases bass bias at low listening level.

The EQ button is a sequencing, push-push type that toggles between the 5 equalizer preset settings. Adjustments are made with the TUNE knob only while the SELECT indicator is illuminated and the requested frequency is shown in the display.

To set a preset equalizer setting perform the following steps:

1. Press the TONE button and adjust the equalizer to the desired setting.
2. Press the EQ button for 5 seconds.
3. Turn the TUNE knob or press the EQ button to select the desired preset number.
4. Press the TUNE knob or the TONE button to save the setting.

The BAL/FADE button is a sequencing, push-push type that toggles between the Balance and Fade options. Adjustments are made with the TUNE knob only while the SELECT indicator is lit and the requested option is shown in the display. Turn the TUNE knob to the right or left to adjust.

The 6 favorite station preset push-buttons serve a dual role with the cassette and the compact disc player functions. When in the receiver mode, these preset buttons serve as station memories. When a CD or a tape is being played, the buttons perform the CD or the tape deck functions as described elsewhere in this section.

The following 18 presets are available:

To set a station preset perform the following steps:

1. Select the desired band, AM or FM.
2. Tune to the desired station.
3. Press EQ in order to set the equalization setting for the station.
4. Press and hold one of the 6 numbered buttons.

The radio will beep when the display shows the preset number and the station is saved.

The radios feature a dual direction seek. They incorporate a vertically mounted SEEK/SCAN button. Pressing the top portion of the button causes the radio to seek up in frequency. Pressing the bottom portion causes the radio to seek down in frequency. The steering wheel SEEK control button replicates this function.

Pressing one of the SEEK/SCAN buttons for 2 seconds causes SCAN to appear in the display. The radio goes to the next higher or lower station for 5 seconds, then goes on to the next station. Press the SEEK button again in order to stop scanning.

Set the time-of-day (TOD) by using the HRS (hours) and MIN (minutes) buttons. There is an initial delay of 2 seconds after the first button depression before the unit enters the time set mode.

The SCV button is a sequencing, push-push type that toggles between the following:

The button is active anytime the unit is on.

Tape Player

1. The radio will display error codes for the tape player, integral CD Player, and remote cd player.
2. The radio will display the following tape player error codes for tight tape, broken tape, and wrapped tape. If these conditions are detected, the radio will switch to the radio mode and eject the tape. The error code will be displayed for 5 seconds, followed by the tuner display, then the default.

•	E10-Tight tape.

•	E11-Broken tape.

•	E14-Wrapped tape.

3. The radio will display the following integral CD Player error codes. If one of these problems is detected, the unit will switch to the radio mode and eject the CD. The display will show TOD, if the unit is off, or display the radio frequency for 5 seconds, then the default, if the unit is on.

•	E20-Optics focus error, maybe due to moisture.

•	E21-Optics loss of tracking control, maybe due to blemishes on disc.

•	E22-Load/Unload motor problem.

•	E23-Communication problem.

4. The radio will display the following Remote CD Changer error codes. If one of these problems is detected, the unit will switch to the radio mode and eject the CD. The display will show TOD, if the unit is off, or display the radio frequency for 5 seconds, then the default, if the unit is on.

•	E30-Focus Error

•	E31-Loss of Tracking Control

•	E34-Door Open