User manual YAMAHA XM6150-XM4220

[. . . ] In order to take full advantage of your power amplifier and enjoy long and trouble-free operation, please read this Owner's Manual carefully before using your XM Series Power Amplifier. WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: GREEN-AND-YELLOW : BLUE : BROWN : EARTH NEUTRAL LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safety earth symbol or coloured GREEN and YELLOW. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK. The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. * This applies only to products distributed by YAMAHA KEMBLE MUSIC (U. K. ) LTD. 2 Precautions Warnings · · Do not allow water to enter this unit or allow the unit to become wet. [. . . ] Doing so is a potential electrical shock hazard. Do not use this amplifier for any purpose other than driving loudspeakers. · · · · · · · · · · · · Usage · · Using a mobile telephone near this unit may induce noise. If noise occurs, use the telephone away from the unit. XLR-type connectors are wired as follows: pin 1: ground, pin 2: hot (+), and pin 3: cold (­). Contents Controls and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Using a Euroblock connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Speaker Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 Controls and Functions s Front Panel 1 3 4 2 * The illustration shows model XM6150. 1 POWER switch and indicator This is the main POWER switch. The POWER indicator lights up when the amplifier it turned on. 3 CLIP indicator A channel's CLIP indicator lights up when its output distortion exceeds 1% (i. e. , clipping). Output signal clipping is typically caused by excessive input signal levels. 2 PROTECTION indicator When the protection system is active, the PROTECTION indicator lights up and the speakers are automatically disconnected from the amplifier's outputs. The protection system activates in the following situations: · When the amplifier is turned on The protection system activates for approximately three seconds when the amplifier is turned on. After three seconds, the protection system deactivates automatically and the amplifier is ready for normal operation. · If a DC voltage is detected at the amplifier's outputs The protection system activates if a DC voltage is detected at the amplifier's outputs. [. . . ] For European Model Purchaser/User information specified in EN55103-1 and EN55103-2. Inrush Current: 56A Conformed Enviroment: E1, E2, E3 and E4. 9 10 Note: The block diagram indicated in the dotted frame ( ) applies only to model XM6150 s Block Diagram s Dimensions W: 480 H: 132 D: 319 Unit: mm 11 Troubleshooting The following table lists the main causes of abnormal operation and the corrective measures required as well as the protective circuit operation in each case. Indicator Possible Cause There is a short at the amplifier's speaker outputs, the speaker's inputs, or in the wiring. The impedance of the connected speaker is too low. Remedy Protection Circuit Locate and remove the short. Use a speaker with a minimum impedance of 4 (8 in Bridge mode). [. . . ]