Manuale d’uso / di manutenzione del prodotto 945 del fabbricante Hafler
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Series 945 Preamp/Tuner.
NOTICE - IMPORTANT SAFETY INFORMATION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
12. CLEANING The equipment should be cleaned only as detailed in the operating instructions. 13. OBJECT AND LIQUID ENTRY Care should be taken so that objects and/or liquids, such as cleaning fluids or beverages, are not spilled into the enclosure of the equipment.
TABLE OF CONTENTS PERFORMANCE SPECIFICATIONS ............................................................................................... 4 General Information ........................................................................................
PERFORMANCE SPECIFICATIONS LINE AMPLIFIER (Measured at Line Out) HEADPHONE AMPLIFIER TUNER SECTION-FM TUNER SECTION-AM GENERAL INFORMATION All specifications are for 20 Hz - 20 kHz unless specified otherwise.
REMOTE CONTROLS: Up/Down Volume, Up/Down Tuning, Preset Next, Preset ‘1 ‘, Preset ‘11’: Audio/ Video Input Selectors, Tape 1, Tape 2/EPL, Power, AM/FM Selector, Tone In, Mute.
, 16 15 16 15 RP P 14 14 P P 945 PREAMP/TUNER FRONT PANEL VIEW.
FRONT PANEL CALL-OUTS 1. POWER SWITCH 15. -lights amber when in READY mode. -lights green when in ON mode. 2. 3. INFRARED RECEIVER WINDOW MEMORY PRESETS (l-9) -press to store AM/FM stations l-9 into memory. (See #6) -press to recall AM/FM stations l-9 from memory.
LEFT CHANNEL VIDEO RECORD TAPE 1 A/V IN VIDEO IN SWITCHED AC LINE VOLTAGE LINE OUT +, ,+ M:%:R ,A, OUTLETS RATING OUT IN 3 2 1 3 1 1 ANTENNA -@@@@@@@@@@ @@@@@ BRACKET *@@@@Q@@@@ @ @@@@ RIGHT 1 O?JT It.
LEFI- CHANNEL VIDEO RECORD TAPE 1 A/V IN VIDEO IN LINE OUT +, ,+ Mtf?I::R +, SWITCHED AC LINE VOLTAGE OUTLETS RATING OUT IN 3 2 1 3 2 1 RIGHT I CHANNEL ObT Ikl Y I I A/V OUT CD FM ANT UNSWITCHED LINE .
PREAMP /TUNER REMOTE CONTROL 1. VOLUME -press left volume button for decreased volume. -press right volume button for increased volume. -pressing either volume button defeats MUTE. 2. TUNE -press left button to change tuner down in frequency. -press right button to change tuner up in frequency.
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ANTENNA CONNECTIONS INITIAL POWER- UP/MUTING SYSTEM AUDIO LINE LEVEL INPUTS AUDIO LINE LEVEL OUTPUTS VIDEO SWITCHING A simple "T" shaped dipole ribbon antenna has been provided for FM reception. Connect its leads to the rear panel terminals marked “FM 300 OHM”.
TAPE INPUTS and TAPE OUTPUTS The 945 incorporates two Tape Loops for use with audio tape decks or other input/output signal processors. Due to the great flexibility of connection and control, the Tape Loops are probably the most complicated portion of the 945 to understand and operate.
MUTE CONTROL VOLUME CONTROL AND VOLUME CONTROL INDICATOR BALANCE CONTROL MONO CONTROL HEADPHONE OUTPUT ~ The Headphone receptacle is a standard 1/4” stereo phone jack, with the tip of the plug as the left channel, the ring the right channel, and the barrel ground.
UP/DOWN TUNING and AUTO SELECTOR MEMORY PRESETS l-9 and +10 PRESET SHIFT (FRONT PANEL) MEMORY PRESET BUTTONS '1', ‘1 1', AND NEXT (REMOTE CONTROL) STORING STATIONS INTO MEMORY MONO CONTROL Pressing the left tuning button will change the station frequency down the band.
CIRCUIT DESCRIPTION REMOTE RECEIVER and CONTROL LOGIC AUDIO LINE LEVEL INPUT SELECTOR SYSTEM JFET BUFFER AND RECORD OUTPUT DRIVER VIDEO SWITCHING TAPE MONlTOR SWITCHING LINE AMPLIFIER TONE CONTROL SYSTEM MUTING SYSTEM The Remote Receiver circuitry decodes the infrared pulses received from the Remote Control via the front panel Infrared Receiver.
HEADPHONE AMPLIFIER AM/FM TUNER The Headphone Amplifier utilizes a separate special purpose operational amplifier to drive the high current demands of headphone operation. This provides the extra power necessary for driving difficult headphone loads, and leaves the main signal path uncompromised for signals to power amplifiers.
FM ANTENNA WARNING: The use of ground adaptors (with the ground tab or wire of the adaptor disconnected) will eliminate the safety feature of the grounded power cord. This safety feature is intended to reduce the risk of electric shock-should an internal fault in the equipment result in an electrically “live” chassis.
AM ANTENNA REMOTE CONTROL BATTERY REPLACEMENT CLEANING/ MAINTENANCE The loop antenna supplied will offer excellent reception in most situations. It is a directional antenna, requiring orientation perpendicular to the radio station’s transmitter.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Hafler 945 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Hafler 945 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Hafler 945 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Hafler 945 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Hafler 945, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Hafler 945.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Hafler 945. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Hafler 945 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
