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Yamaha P-4050 [4/18] Precautions
![Yamaha P-4050 [4/18] Precautions](/views2/1013971/page4/bg4.png)
Содержание
- Power amplifier amplificateur de puissance 1
- Yamaha 1
- Applies only to products distributed by yamaha corporation of america 2
- Canada 2
- Connecting the plug and cord warning this apparatus must be earthed 2
- Fcc information u s a 2
- Important notice for the united kingdom 2
- This applies only to products distributed by yamaha canada music ltd 2
- This applies only to products distributed by yamaha kemble music u k ltd 2
- Air filter maintenance 4
- Always use the correct power supply 4
- Amplifier ventilation 4
- Avoid excessive heat humidity dust and 4
- Avoid physical shocks 4
- Clean with a soft dry cloth 4
- Do not open the case or attempt repairs 4
- Handle cables carefully 4
- Make sure power is off before making or 4
- Or modifications yourself 4
- Precautions 4
- Removing connections 4
- Vibration 4
- Cooling fans 5
- Input attenuators 5
- Operation 5
- Power switch indicator 5
- Protection indicator 5
- Thermal indicator 5
- Rear panel 6
- 2сн e e 7
- Gnd terminal 7
- Input connectors trs phone type 7
- Input mode switch 7
- O input terminals screw type 7
- Output mode switch 7
- Speaker terminals 7
- 4 inputs 4 outputs 1 input 4 outputs 3 inputs 3 outputs 1 input 3 outputs 2 inputs 2 outputs 1 input 2 outputs 8
- Amplifier with 4 inputs and 4 outputs amplifier with 1 input and 4 outputs 8
- Combining the input mode and output mode switch settings the amplifier offers the following six application setups 8
- Connections 8
- D c b b a b 8
- Mixer or pre amp output 8
- To input terminals 8
- C 0 a b 9
- C 0 a d 9
- Mixer or pre amp output 9
- To input terminals 9
- Installation details 10
- Permanent rack mounting 10
- Portable rack mounting 10
- Caution for speaker connection 11
- Cleaning the filter elements 12
- Dry the filter elements thoroughly 12
- If the filter elements are exceptionally dirty deter gent washing up liquid may be used 12
- Indicator display probable cause remedy protective circuit operation 12
- Make sure the power to the amplifier is off 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 12
- Remove the filter elements and wash in plain water 12
- Remove the power plug from the ac mains socket 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 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 12
- Troubleshooting 12
- For european model 13
- Purchaser user information specified in en55103 1 and en55103 2 inrush current 16a conformed environment el e2 e3 and e4 13
- Specifications 13
- Channel separation 14
- Frequency response 14
- Output power vs power consumption 14
- Performance graphs 14
- Thd vs output power 14
- Block diagram 15
- Dimensions 16
- Unit mm inch 16
- Achtung 17
- Advarsel 17
- Attention 17
- Avvertenza 17
- Caution 17
- Entretien 17
- Kundendienst 17
- Observera 17
- Service 17
- Varoitus 17
- Yamaha 18
- Yamaha corporation 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