User manual YAMAHA CR-1020 circuit diagram

[. . . ] REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. 9 · Explanation of Graphical Symbols The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert you to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 10 Power Sources ­ The unit should be connected to a power supply only of the type described in the operating instructions or as marked on the unit. 11 Power-Cord Protection ­ Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the unit. 12 Cleaning ­ The unit should be cleaned only as recommended by the manufacturer. WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. 13 Nonuse Periods ­ The power cord of the unit should be unplugged from the outlet when left unused for a long period of time. 1 2 3 4 5 Read Instructions ­ All the safety and operating instructions should be read before the unit is operated. Retain Instructions ­ The safety and operating instructions should be retained for future reference. Heed Warnings ­ All warnings on the unit and in the operating instructions should be adhered to. [. . . ] When moving the unit, be sure to first disconnect the power plug and disconnect all wires connected from the unit to other equipment. 9. Do not attempt to clean this unit with chemical solvents, because this may damage the finish. Be sure to read the "TROUBLESHOOTING" section of this manual for advice on common operating errors before concluding that the unit is faulty. 11. Keep this manual in a safe place for future reference. Voltage Selector (General Model only) The voltage selector on the rear panel of this unit must be set for your local main voltage BEFORE plugging into the AC main supply. Voltages are 110-120/220-240V AC, 50/60 Hz. 2 English SUPPLIED ACCESSORIES After unpacking, check that the following parts are contained. Indoor FM Antenna AM Loop Antenna Audio connection cord FEATURES · 40 Station Random Access Preset Tuning · Automatic Preset Tuning · Multi-Status Station Memory · Direct PLL Synthesizer Tuning · Preset Station Shifting Capability (Preset Editing) 3 CONNECTIONS Never plug in this unit and other components until all connections are completed. ANTENNA CONNECTIONS q q Each antenna should be connected to the designated terminals correctly, referring to the following figure. Both AM and FM indoor antennas are included with this unit. In general, these antennas will probably provide sufficient signal strength. Nevertheless, a properly installed outdoor antenna will give clearer reception than an indoor one. If you experience poor reception quality, an outdoor antenna may result in improvement. Outdoor FM antenna Indoor FM antenna (included) Outdoor AM antenna AM loop antenna (included) FM ANT GND AM ANT 75 UNBAL. 75-ohm antenna adapter 300-ohm feeder 75-ohm coaxial cable 75-ohm/300-ohm antenna adapter Ground 4 English Connecting the indoor FM antenna Connecting the AM loop antenna 1 2 2 3 1 3 Orient so that the best reception is obtained. 4 ST (STEREO) indicator Lights up when an FM stereo broadcast with sufficient signal strength is received. 5 Signal-level meter Indicates the signal level of the received station. If multipath interference is detected, the indication decreases. 6 MEMO indicator When the MEMORY button is pressed, this indicator flashes for about 5 seconds. During this period, the displayed station can be programmed to the memory by using the A/B/C/D/E button and one of the PRESET STATIONS buttons. 7 EDIT indicator Flashes by the first press of the EDIT button when you will exchange preset stations, and lights up for a moment by the second press of the EDIT button to show that the exchange has succeeded. 8 English TUNING OPERATIONS Normally, if station signals are strong and there is no interference, quick automatic-search tuning (AUTOMATIC TUNING) is possible. However, if signals of the station you want to select are weak, you must tune to it manually (MANUAL TUNING). NATURAL SOUND AM/FM STEREO TUNER TX­492 PRESET STATIONS 2 3 1 4 DOWN TUNING UP 1 POWER 5 6 7 8 A/B/C/D/E MEMORY EDIT FM/AM TUNING MODE MAN'L/AUTO FM AUTO/MAN'MONO 23 AUTOMATIC TUNING MANUAL TUNING 4 1 Turn the power on. POWER 1 Turn the power on. POWER 2 Select the reception band (FM or AM) confirming it on the display. FM/AM 2 Select the reception band (FM or AM) confirming it on the display. FM/AM or or 3 TUNING MODE AUTO/MAN'MONO 3 TUNING MODE AUTO AUTO/MAN'MONO Turn "AUTO" off. 4 TUNING DOWN UP 4 Tune to a desired station manually. TUNING DOWN UP To tune to a higher frequency, press the UP button. To tune to a lower frequency, press the DOWN button. * If the station where tuning search stops is not the desired one, press again. * If the tuning search does not stop at the desired station (because the signals of the station are weak), change to the MANUAL TUNING method. * To continue tuning search, press and hold the button. Note If you tune to an FM station manually, it is received in monaural mode automatically to increase the signal quality. 9 PRESET TUNING MANUAL PRESET TUNING This unit can store station frequencies selected by tuning operation. With this function, you can recall any desired station by only selecting the preset station number where it is stored. Up to 40 stations (8 stations x 5 groups) can be stored. 4, 2 NATURAL SOUND AM/FM STEREO TUNER TX­492 PRESET STATIONS 2 3 1 POWER 4 DOWN 5 6 7 8 TUNING UP A/B/C/D/E MEMORY EDIT FM/AM TUNING MODE MAN'L/AUTO FM AUTO/MAN'MONO 2, 1 3 To store stations To recall a preset station 1 2 Tune to a desired station. (Refer to the previous page for tuning procedure. ) 1 Select the group of preset stations. A/B/C/D/E Select a desired group (A ­ E) of preset stations confirming it on the display. A/B/C/D/E 2 Select the preset station number. PRESET STATIONS 2 3 1 4 3 5 6 7 8 MEMORY MAN'L/AUTO FM MEMO Flashes on and off for about 5 seconds. 4 Select a preset station number where you want to program the station before "MEMO" goes off from the display. 1 PRESET STATIONS 2 3 4 Notes A new setting can be programmed in place of the former one. [. . . ] A desired station cannot be tuned in with Automatic tuning. Previously preset stations can no longer be tuned in. A desired station cannot be tuned in with Automatic tuning. There are continuous crackling and hissing noises. [. . . ]