Yamaha P-4050 — основные меры предосторожности для аудиооборудования [4/18]

Содержание

• Yamaha p.1
• Power amplifier amplificateur de puissance p.1
• Connecting the plug and cord warning this apparatus must be earthed p.2
• This applies only to products distributed by yamaha kemble music u k ltd p.2
• This applies only to products distributed by yamaha canada music ltd p.2
• Important notice for the united kingdom p.2
• Fcc information u s a p.2
• Canada p.2
• Applies only to products distributed by yamaha corporation of america p.2
• Avoid physical shocks p.4
• Avoid excessive heat humidity dust and p.4
• Amplifier ventilation p.4
• Always use the correct power supply p.4
• Air filter maintenance p.4
• Vibration p.4
• Removing connections p.4
• Precautions p.4
• Or modifications yourself p.4
• Make sure power is off before making or p.4
• Handle cables carefully p.4
• Do not open the case or attempt repairs p.4
• Clean with a soft dry cloth p.4
• Thermal indicator p.5
• Protection indicator p.5
• Power switch indicator p.5
• Operation p.5
• Input attenuators p.5
• Cooling fans p.5
• Rear panel p.6
• 2сн e e p.7
• Speaker terminals p.7
• Output mode switch p.7
• O input terminals screw type p.7
• Input mode switch p.7
• Input connectors trs phone type p.7
• Gnd terminal p.7
• To input terminals p.8
• Mixer or pre amp output p.8
• D c b b a b p.8
• Connections p.8
• Combining the input mode and output mode switch settings the amplifier offers the following six application setups p.8
• Amplifier with 4 inputs and 4 outputs amplifier with 1 input and 4 outputs p.8
• 4 inputs 4 outputs 1 input 4 outputs 3 inputs 3 outputs 1 input 3 outputs 2 inputs 2 outputs 1 input 2 outputs p.8
• Mixer or pre amp output p.9
• C 0 a d p.9
• C 0 a b p.9
• To input terminals p.9
• Portable rack mounting p.10
• Permanent rack mounting p.10
• Installation details p.10
• Caution for speaker connection p.11
• Troubleshooting p.12
• To ensure adequate cooling air intake the filter element must be cleaned when it has become clogged the following points describe the cleaning procedure p.12
• 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 p.12
• Remove the power plug from the ac mains socket p.12
• Remove the filter elements and wash in plain water p.12
• Never replace the filter elements while they are still wet replace the elements and front filter grilles the replacement part number of the filter element is vm57950 p.12
• Make sure the power to the amplifier is off p.12
• Indicator display probable cause remedy protective circuit operation p.12
• If the filter elements are exceptionally dirty deter gent washing up liquid may be used p.12
• Dry the filter elements thoroughly p.12
• Cleaning the filter elements p.12
• Specifications p.13
• Purchaser user information specified in en55103 1 and en55103 2 inrush current 16a conformed environment el e2 e3 and e4 p.13
• For european model p.13
• Thd vs output power p.14
• Performance graphs p.14
• Output power vs power consumption p.14
• Frequency response p.14
• Channel separation p.14
• Block diagram p.15
• Unit mm inch p.16
• Dimensions p.16
• Caution p.17
• Avvertenza p.17
• Attention p.17
• Advarsel p.17
• Achtung p.17
• Varoitus p.17
• Service p.17
• Observera p.17
• Kundendienst p.17
• Entretien p.17
• Yamaha corporation p.18
• Yamaha p.18

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PRECAUTIONS 1 Avoid Excessive Heat Humidity Dust and Vibration 5 Do Not Open The Case Or Attempt Repairs Or Modifications Yourself Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity such as near radiators stoves etc Also avoid loca tions which are subject to excessive dust accumula tion or vibration which could cause mechanical damage This product contains no user serviceable parts Re fer all maintenance to qualified Yamaha service per sonnel Opening the case and or tampering with the internal circuitry will void the warranty 2 Amplifier Ventilation The power amplifier is equipped with cooling fans It is important to ensure that proper air flow can be maintained Position the amplifier so that the front and side ventilation airflow paths are not blocked For details about rack mount ventilation refer to the INSTALLATION DETAILS section on page 8 3 Air Filter Maintenance This unit uses two fans for taking in cool air from the outside To prevent dust from penetrating the interior the air inlets are equipped with filters When the filter elements becomes clogged the cooling efficiency will be impaired For this reason the fil ter elements should be checked periodically and rinsed if necessary For details refer to page 10 CLEANING THE FILTER ELEMENTS 4 Avoid Physical Shocks Strong physical shocks to the unit can cause dam age Handle it with care 2 6 Make Sure Power Is Off Before Making Or Removing Connections Always turn the power OFF prior to connecting or disconnecting cables This is important to prevent damage to the unit itself as well as other connected equipment 7 Handle Cables Carefully Always plug and unplug cables including the AC cord by gripping the connector not the cord 8 Clean With a Soft Dry Cloth Never use solvents such as benzine or thinner to clean the unit Wipe clean with a soft dry cloth 9 Always Use the Correct Power Supply Make sure that the power supply voltage specified on the rear panel matches your local AC mains sup ply Also make sure that the AC mains supply can deliver more than enough current to handle all equipment used in your system

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