1. Introducció
This manual provides detailed instructions for the setup, operation, and maintenance of your Koss HG857 Portable CD System. The HG857 is a versatile audio system featuring a CD player, digital AM/FM tuner, and dual cassette decks, designed for both portable use and as a compact stereo system. Please read this manual thoroughly before using your unit to ensure proper operation and to maximize its performance.
Figura 1: Frontal view of the Koss HG857 Portable CD System with the CD compartment open, showing the main unit and detachable speakers.
2. Configuració
2.1 Desembalatge
Carefully remove all components from the packaging. Ensure you have the main unit, two detachable speakers, the remote control, and this instruction manual. Retain the packaging for future transport or storage.
2.2 Connectar altaveus
The Koss HG857 features detachable speakers. Connect the speaker wires from each speaker to the corresponding speaker terminals on the rear of the main unit. Ensure correct polarity (red to red, black to black) for optimal sound.
Figura 2: posterior view of the Koss HG857 system, showing the main unit with detachable speakers connected, highlighting the speaker terminals and power input.
2.3 Engegar la unitat
Alimentació CA
Connect the AC power cord to the AC inlet on the rear of the unit and then plug it into a standard AC 120V, 60Hz wall outlet.
Potència de la bateria
For portable use, the unit requires 8 D-size batteries. Open the battery compartment on the bottom of the unit and insert the batteries, observing the correct polarity (+/-) as indicated.
Figura 3: Detallada view of the Koss HG857 rear panel, showing the AC power input, speaker terminals, and the extendable FM antenna.
2.4 Configuració de l'antena
For FM reception, extend the telescopic antenna fully. For AM reception, the unit uses a built-in ferrite bar antenna; rotate the unit for best reception.
3. Funcionament
3.1 Controls bàsics
- Botó d'encendre: Premeu per encendre o apagar la unitat.
- Control de VOLUM: Rotate to adjust the overall sound level.
- Control de BALANCE: Adjusts the balance between the left and right speakers.
- DYNAMIC BASS BOOST (DBB): Activates or deactivates enhanced bass response.
3.2 Funcionament del reproductor de CD
- Obriu la tapa del compartiment del CD.
- Col·loca un CD amb l'etiqueta cap amunt.
- Tanqueu la tapa del compartiment del CD.
- Premeu el botó CD/AUX botó per seleccionar el mode CD.
- Premeu el botó REPRODUCCIÓ/PAUSA per iniciar la reproducció.
- Ús SALTAR/CERCAR buttons to navigate tracks or fast forward/rewind.
- PROGRAMA: Allows programming up to 20 tracks in a desired order.
3.3 Radio Tuner Operation
- Premeu el botó SINTONITZADOR button to select AM or FM band.
- Utilitza el TUNING botons per sintonitzar manualment una emissora.
- Mantén premut TUNING buttons for automatic station search.
- PRESET: Store and recall up to 20 AM/FM stations.
3.4 Funcionament de la platina de casset
The unit features dual cassette decks (Deck A and Deck B).
Reproducció
- Open the cassette door and insert a cassette tape.
- Premeu el botó CINTA button to select tape mode.
- Premeu JUGAR on either Deck A or Deck B to start playback.
- Ús REBOBINAR, AVANT RÀPID, i PARAR/EXPULTAR botons segons sigui necessari.
Gravació
You can record from CD, Radio, or Tape A to Tape B.
- Insert a blank, recordable cassette into Deck B.
- Select the desired source (CD, TUNER, or TAPE A).
- Premeu el botó REGISTRAR button on Deck B. Playback from the source will begin automatically.
- Premeu STOP on Deck B to end recording.
3.5 Control remot
The included remote control allows convenient operation of most functions from a distance. Ensure the remote has working batteries and is pointed towards the main unit's sensor.
Figure 4: The multi-function remote control for the Koss HG857, showing various buttons for CD, tuner, and tape operations.
3.6 Presa d'auriculars
A stereo headphone jack is provided for private listening. Plugging in headphones will mute the speakers.
4. Manteniment
4.1 Neteja
Netegeu la unitat amb un drap suau i sec. No utilitzeu netejadors abrasius ni dissolvents. Per a la lent del CD, utilitzeu un netejador de lents de CD especialitzat.
4.2 Substitució de la bateria
If using battery power, replace all 8 D-size batteries when the unit's performance degrades. Ensure proper polarity.
4.3 Cura de CD i cassets
- Manipuleu els CD per les vores per evitar empremtes dactilars i ratllades.
- Store cassettes away from direct sunlight and heat.
- Periodically clean cassette heads with a head cleaner.
5. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | AC cord not plugged in; Batteries depleted or incorrectly inserted. | Comproveu la connexió de CA; substituïu les piles, assegurant-vos de la polaritat correcta. |
| Sense so | Volume too low; Headphones connected; Speakers not connected properly. | Increase volume; Disconnect headphones; Check speaker connections. |
| El CD salta o no es reprodueix | CD dirty or scratched; CD inserted incorrectly; Unit in wrong mode. | Clean CD; Reinsert CD label side up; Select CD mode. |
| Mala recepció de ràdio | Antena no estesa/col·locada; Senyal feble. | Extend and adjust FM antenna; Rotate unit for AM; Try a different location. |
| Problemes de reproducció de cassets | Tape tangled or damaged; Heads dirty. | Check tape condition; Clean cassette heads. |
| El comandament a distància no funciona | Batteries depleted or incorrectly inserted; Obstruction between remote and unit. | Replace remote batteries; Ensure clear line of sight to unit's sensor. |
6. Especificacions
- Model: HG857
- Font d'alimentació: AC 120V, 60Hz; 8 x D-size batteries
- Reproductor de CD: Top-loading, 20-track programmable
- Sintonitzador de ràdio: Digital AM/FM, 20 station presets
- Cassette Decks: Dual cassette, recordable
- Ponents: Detachable 3-way speakers with Dynamic Bass Boost
- Connectivitat: Presa d’auriculars estèreo
- Dimensions (aprox.): 27.8 x 12.5 x 11.6 polzades (dimensions del paquet)
- Pes (aprox.): 16.7 lliures (pes de l'article)
- Fabricant: Koss Audio & Video
- Primer disponible: 4 de setembre de 1999
7. Garantia i assistència
For warranty information and customer support, please refer to the warranty card included with your product or visit the official Koss weblloc web. Conserveu el rebut de compra com a comprovant de compra.
Koss Official Weblloc: www.koss.com