User manual KENWOOD TR-7950 SERVICE MANUAL

[. . . ] If the plug fitted is not suitable for the power points in your home or the cable is too short to reach a power point, then obtain an appropriate safety approved extension lead or adapter, or consult your dealer. If nonetheless the mains plug is cut off, remove the fuse and dispose of the plug immediately, to avoid a possible shock hazard by inadvertent connection to the mains supply. IMPORTANT: The wires in the mains lead are coloured in accordance with the following code: Blue: Neutral Brown: Live Do not connect those leads to the earth terminal of a three-pin plug. AC 110 120V~ AC 220 240V~ CONNECT WITH AV CONTROL CENTER SUB FRONT SURROUND WOOFER AC 110 120V~ AC 220 240V~ CENTER SURROUND FRONT UNSWITCHED + R R SW + (6-16) C L L (6-16) SPEAKERS SPEAKERS Move switch lever to match your line voltage with a small screwdriver or other pointed tool. Safety precautions Caution : Read this section carefully to ensure safe operation. WARNING : TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER 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 THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. Introduction M-A300/A100 (En) Unpacking Unpack the unit carefully and make sure that all accessories are put aside so they will not be lost. [. . . ] This new TRAITR transistor combines a temperature compensation resistor with an emitter resistor and final transistor to provide ideal temperature compensation characteristics and minimize distortion caused by temperature variations. Controls and indicators POWER indicator POWER POWER AMPLIFIER -ON ­OFF POWER switch System connections M-A300/A100 (En) 4 Terminal connection Main unit 1 Strip coating. 2 Push lever. Speaker unit 1 Strip coating. 2 Push lever. 3 Insert cord. 4 Return lever. 3 Insert cord. 4 Return lever. · Never short circuit the + and ­ speaker cords. · If the left and right speakers are connected inversely or the speaker cords are connected with reversed polarity, the sound will be unnatural with ambiguous acoustic imaging. Be sure to connect the speakers correctly. Connection of parallel cord · When connecting the parallel cord, insert the plug straight into the connector until it clicks to lock them securely. · When disconnecting the parallel cord, push in the two sides of the plug and pull it straight out. Caution regarding placement (Except for U. S. A. and Canada) To maintain proper ventilation, be sure to leave a space around the unit (from the largest outer dimensions, including projections) equal to, or greater than shown below: Left and right panels: 10 cm, Rear panel: 10 cm Ventilation fan The ventilation fan runs during high-power reproduction. To allow for proper ventilation, do not block the ventilation fan. AC outlet on the rear panel UNSWITCHED AC outlet The power of the component connected to this kind of AC outlet can be switched ON/OFF regardless of the POWER switch on the main unit. Notes 1. Loose connections may prevent proper sound transmission or produce noise. Be sure to remove the power cord from the AC outlet before plugging or unplugging any connection cords. Plugging / unplugging connection cords without disconnecting the power cord can cause malfunctions and may damage the unit. and Canada] 100 watts per channel minimum RMS, both channels driven, at 6 from 20 Hz to 20 kHz with no more than 0. 09 % total harmonic distortion. (FTC) [For the UK] (DIN) 1 kHz, 0. 7% at 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W + 100 W (IEC) 63 Hz ~ 12. 5 kHz, 0. 7% at 6 . . . . . . . . . . . . . . . . . . . . . 100 W + 100 W [For other countries] 1kHz, 1% T. H. D. , at 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 W + 80 W Effective output power during SURROUND operation [For the U. S. A. , Canada and the UK] FRONT (1kHz, 5% T. H. D. at 6 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W + 100 W [For other countries] FRONT(1kHz, 10% T. H. D. at 6 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W + 100 W Rated output power during SURROUND operation [For the U. S. A. at 6 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 W + 60 W [For the UK] FRONT (1kHz, 1% T. H. D. at 6 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] W : 400 mm (15-3/4") H : 140 mm (5-1/2") D : 383 mm (15-1/16") Weight (Net) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10. 6 kg (23. 4 lb) GENERAL Power consumption [For the U. S. A. and Canada] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and Canada] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]