This document describes the Pioneer PD-Z74T Twin-Tray Compact Disc Player, a digital audio system designed for playing compact discs.
Function Description
The PD-Z74T is a compact disc player featuring a twin-tray design, allowing for continuous playback between two discs. It supports various playback modes, including:
- Play and Pause: Standard playback and temporary interruption.
- Track Search and Manual Search: Navigation through tracks on a disc.
- Programmed Playback and Repeat: Users can program a specific order of tracks to play and repeat them.
- Pause Program: Temporarily pause a programmed sequence.
- Computer Allocated Program Editing (COMPU PGM EDIT): An internal computer automatically rearranges the playback order of tracks to maximize the number of tracks recorded onto a cassette tape of a designated length (e.g., 46, 54, 60, 74, or 90 minutes). This feature displays the number of tracks and playing time for both side A and side B of the cassette.
- Single Track Repeat: Repeats a single track.
- Sequential Disc All Track Repeat: Repeats all tracks on both discs in sequence.
- Relay Playback: Plays discs consecutively from one tray to the other.
- Random Relay Play: Plays tracks randomly across both discs.
- Auto Eject Play: Automatically ejects a disc and begins playback on the other.
- Auto Eject Random Play: Automatically ejects a disc and begins random playback on the other.
- Random Play and Repeat: Plays tracks in a random order and can repeat the random sequence.
- Hi-lite Scan: Plays ten seconds of each track on a disc, starting approximately one minute after the track's beginning. The playback point can be adjusted.
- Display of a Particular Track: Shows information for a specific track.
Important Technical Specifications
1. General:
- Type: Compact disc digital audio system.
- Power Requirements:
- European models: AC 220V, 50/60Hz
- U.K., Australian models: AC 240V, 50/60Hz
- U.S., Canadian models: AC 120V, 60Hz
- Other models: AC 110/120-127/220/240V (switchable), 50/60Hz
- Power Consumption: 10W.
- Operating Temperature: +5°C to +35°C (+41°F to +95°F).
- Weight: 3.4kg (7lb, 8oz).
- External Dimensions: 360(W) x 290(D) x 105(H)mm (14-3/16(W) x 11-13/32(D) x 4-1/8(H) in.).
2. Audio Section:
- Frequency Response: 2Hz-20kHz.
- S/N (Signal-to-Noise Ratio): 100dB or more (EIAJ).
- Dynamic Range: 94dB or more (EIAJ).
- Channel Separation: 93dB or more (EIAJ).
- Wow and Flutter: Limit of measurement (±0.001% W.PEAK) or less (EIAJ).
- Number of Channels: 2 channels (stereo).
3. Output Terminals:
- Audio line output terminal.
- Control output terminal.
Usage Features
The player features a front panel with various controls and a display for easy operation:
- Power Switch (POWER STANDBY/ON): Turns the unit on/off.
- Disc Trays (DISC I, DISC II): Two trays for loading compact discs.
- OPEN/CLOSE Buttons (I, II): Opens and closes the respective disc trays.
- Disc Select Buttons (DISC I, DISC II): Selects which disc to play.
- AUTO EJECT Button: Initiates auto-eject function.
- REPEAT Button: Controls repeat playback modes.
- TIME Button: Displays various time information (elapsed playing time, remaining time of current track, remaining time of all tracks, total playing time of disc I/II).
- Program Button (PGM): Used for programmed playback.
- Computer Allocated Program Editing Button (COMPU PGM): Activates the tape editing feature.
- Track/Manual Search Buttons (◄◄/►►): For navigating tracks.
- PLAY Button (►): Starts playback.
- PAUSE Button (II): Pauses playback.
- Random Play Button (RANDOM): Initiates random playback.
- HI-LITE SCAN Button: Activates the Hi-lite scan feature.
- Stop/Clear Button (STOP ■): Stops playback and clears programmed settings.
Display Indicators:
- Lights for computer allocated program editing, auto eject, program input, playback pause, playback (DISC I or DISC II), disc number, track number, repeat playback, minutes/seconds digits for playing/remaining time, random playback, and HI-LITE scan.
Loading and Playback:
- Discs are loaded with the label surface facing up.
- Only one disc should be loaded per tray at a time.
- The player is designed for standard compact audio discs.
- Multi-voltage models are available, with a voltage selector switch on the rear panel for U.S., Canadian, European, U.K., and Australian models. Saudi Arabia models are fixed at 220V.
Remote Control:
- The unit can be connected to a Pioneer stereo amplifier with a CONTROL IN terminal for integrated system control (PLAY, PAUSE, STOP, DISC, and TRACK functions).
Maintenance Features
Cleaning:
- Player Unit: Wipe with a soft, dry cloth. For heavy dirt, use a soft cloth dampened with water, then wipe dry. Do not use volatile liquids like benzene or thinner.
- Discs: Wipe with a soft, dry cloth from the center outwards. Do not use record cleaning sprays, benzene, or thinner.
- CD Lens Cleaner: Pioneer recommends using a CD lens cleaner for maintenance, available at service centers.
Handling of Compact Discs:
- Hold discs by the edges or the center hole; avoid touching the signal surfaces.
- Do not affix tape or seals to the label surface.
- Do not play damaged (cracked or severely warped) discs, as they revolve at high speeds inside the player.
Power Cord Caution:
- Handle the power cord by the plug. Do not pull the cord to unplug.
- Do not touch the power cord with wet hands.
- Avoid placing objects on or pinching the power cord.
- Route power cords to prevent stepping on them.
- Check the power cord periodically for damage; replace if damaged.
Environmental Considerations:
- Avoid installing the player in areas with high temperature, humidity, direct sunlight, or near heat-generating sources.
- Ensure proper ventilation; do not place the unit in a closed cabinet or on thick carpets.
- Avoid placing the unit on a surface that vibrates.
- Keep the unit away from magnetic fields, such as those generated by speakers or motors.
- Place the unit on a level surface.
Condensation:
- If the player is brought from a cold to a warm room, condensation may form. Allow the unit to acclimatize for an hour or two before use.
Safety Warnings:
- U.S. Model: Use of controls or adjustments other than specified may result in hazardous radiation exposure. Optical instruments should not be used with this product as it will increase eye hazard.
- European and U.K. Models: This product contains a laser diode of higher class than 1. Do not remove covers or attempt to access the inside. Refer all servicing to qualified personnel. A Class 1 Laser Product label is located on the rear of the player.
- General: The lightning flash with an arrowhead symbol indicates uninsulated "dangerous voltage" within the product's enclosure that may constitute a risk of electric shock. The exclamation point symbol indicates important operating and maintenance instructions. Do not open the cover or back. Refer servicing to qualified service personnel.
- Power Lines: An antenna should be located away from power lines.
- Moisture: Do not expose the unit to rain or moisture.
- Liquid Entry: If liquid enters the unit, unplug it and contact a service center.
- Damage Requiring Service: Unplug the unit and contact service personnel if it is damaged, liquid has spilled, objects have fallen, or it has been exposed to rain.
- Servicing: The user should not attempt to service the unit beyond what is described in the operating instructions. All other servicing should be referred to authorized Pioneer service centers.
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