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Yamaha P-4050 [12/18] Cleaning the filter elements
![Yamaha P-4050 [12/18] Cleaning the filter elements](/views2/1013971/page12/bgc.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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CLEANING THE FILTER ELEMENTS To ensure adequate cooling air intake the filter element must be cleaned when it has become clogged The following points describe the cleaning procedure 1 Make sure the power to the amplifier is OFF 2 Remove the power plug from the AC mains socket 3 Remove the filter elements and wash in plain water If the filter elements are exceptionally dirty deter gent washing up liquid may be used 4 Dry the filter elements thoroughly 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 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 display CLIP indicator lights Probable cause Remedy Protective circuit operation There is a short at a speaker terminal amplifier terminal or wire Locate and correct the cause of the short The PC limiter circuit operates to protect the power transistors The amplifier load is excessive When speakers are connected to the A B C and D speaker terminals make sure that their impedance is 4 ohms or more In case of connection to the L and R terminals the speaker imped ance should be 8 ohms or less Same as above The heat sink temperature has exceeded 100 C Check the amplifier ventilation conditions and take appropriate measures to improve airflow around the amplifier The thermal protection circuit operates to protect the power transistors A DC voltage of 2V or greater was generated in the power amplifier s output circuit Consult your dealer or nearest Yamaha service center The relay operates to protect the speaker system PROTECTION indicator lights 10