1. Introduktion
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.
Figur 1: Forside view of the Koss HG857 Portable CD System with the CD compartment open, showing the main unit and detachable speakers.
2. Opsætning
2.1 Udpakning
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 Tilslutning af højttalere
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.
Figur 2: Bagside view of the Koss HG857 system, showing the main unit with detachable speakers connected, highlighting the speaker terminals and power input.
2.3 Strømforsyning til enheden
AC strøm
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.
Batteristrøm
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.
Figur 3: Detaljeret view of the Koss HG857 rear panel, showing the AC power input, speaker terminals, and the extendable FM antenna.
2.4 Antenneopsætning
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. Betjening
3.1 Grundlæggende kontroller
- POWER -knap: Tryk for at tænde eller slukke enheden.
- VOLUME-kontrol: Rotate to adjust the overall sound level.
- BALANCE kontrol: Adjusts the balance between the left and right speakers.
- DYNAMIC BASS BOOST (DBB): Activates or deactivates enhanced bass response.
3.2 Betjening af cd-afspilleren
- Åbn låget til cd-rummet.
- Placer en CD med etiketten opad.
- Luk låget til cd-rummet.
- Tryk på CD/AUX knappen for at vælge CD -tilstand.
- Tryk på AFSPIL/PAUSE knappen for at starte afspilning.
- Bruge SKIP/SØG buttons to navigate tracks or fast forward/rewind.
- PROGRAM: Allows programming up to 20 tracks in a desired order.
3.3 Betjening af radiotuner
- Tryk på TUNER button to select AM or FM band.
- Brug TUNING knapperne til manuelt at stille ind på en station.
- Tryk og hold TUNING knapper til automatisk stationssøgning.
- Forudindstillet: Store and recall up to 20 AM/FM stations.
3.4 Betjening af kassettebåndoptager
The unit features dual cassette decks (Deck A and Deck B).
Afspilning
- Åbn kassettedækslet, og isæt et kassettebånd.
- Tryk på Bånd -knappen for at vælge båndtilstand.
- Trykke SPIL on either Deck A or Deck B to start playback.
- Bruge SPOLE TILBAGE, HURTIG FREM, og STOP/Skub ud knapper efter behov.
Indspilning
You can record from CD, Radio, or Tape A to Tape B.
- Sæt en tom, optagelig kassette i båndoptager B.
- Select the desired source (CD, TUNER, or TAPE A).
- Tryk på OPTAGE button on Deck B. Playback from the source will begin automatically.
- Trykke STOP on Deck B to end recording.
3.5 Fjernbetjening
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 Hovedtelefonstik
A stereo headphone jack is provided for private listening. Plugging in headphones will mute the speakers.
4. Vedligeholdelse
4.1 Rengøring
Wipe the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents. For the CD lens, use a specialized CD lens cleaner.
4.2 Udskiftning af batteri
If using battery power, replace all 8 D-size batteries when the unit's performance degrades. Ensure proper polarity.
4.3 Vedligeholdelse af cd'er og kassettebånd
- Hold cd'er i kanterne for at undgå fingeraftryk og ridser.
- Store cassettes away from direct sunlight and heat.
- Periodically clean cassette heads with a head cleaner.
5. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen strøm | AC cord not plugged in; Batteries depleted or incorrectly inserted. | Kontroller AC-forbindelsen; Udskift batterierne, og sørg for korrekt polaritet. |
| Ingen lyd | Volume too low; Headphones connected; Speakers not connected properly. | Increase volume; Disconnect headphones; Check speaker connections. |
| CD'en springer over eller afspiller ikke | CD dirty or scratched; CD inserted incorrectly; Unit in wrong mode. | Clean CD; Reinsert CD label side up; Select CD mode. |
| Dårlig radiomodtagelse | Antennen ikke strakt ud/placeret; Svagt signal. | Extend and adjust FM antenna; Rotate unit for AM; Try a different location. |
| Problemer med kassetteafspilning | Tape tangled or damaged; Heads dirty. | Check tape condition; Clean cassette heads. |
| Fjernbetjening virker ikke | Batterierne er opbrugt eller er isat forkert; Blokering mellem fjernbetjening og enhed. | Replace remote batteries; Ensure clear line of sight to unit's sensor. |
6. Specifikationer
- Model: HG857
- Strømkilde: AC 120V, 60Hz; 8 x D-size batteries
- CD-afspiller: Top-loading, 20-track programmable
- Radiotuner: Digital AM/FM, 20 forudindstillede stationer
- Cassette Decks: Dual cassette, recordable
- Højttalere: Detachable 3-way speakers with Dynamic Bass Boost
- Forbindelse: Stereo-hovedtelefonstik
- Dimensioner (ca.): 27.8 x 12.5 x 11.6 tommer (pakkemål)
- Vægt (ca.): 16.7 pund (varevægt)
- Fabrikant: Koss Audio & Video
- Første tilgængelige: 4. september 1999
7. Garanti og support
For warranty information and customer support, please refer to the warranty card included with your product or visit the official Koss webwebstedet. Behold din købskvittering som købsbevis.
Koss Official Webwebsted: www.koss.com