When it comes to the mcintosh wheat map of the united states, many people's first reaction is that iconic blue surface, which is almost hi-fi's proxy in the heart of a fever. But if you turn on the blue watch one day and it doesn't work out, it doesn't feel good. Don't panic. Let's do a systematic analysis of possible causes and methods。
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The first level of screening begins with the simplest. Make sure there's electricity in the power outlets, that's not a word for it. The focus is on the power switch for the mckeating power, with some models using the magnetic maintenance relay switch, press the connection, and then press the switch. If the touch is normal but the machine does not react, check whether the power lines are plugged in and the wheat scene line is a detachable iec interface and poor exposure leads to failure. Try changing the plugs and power lines to remove these underlying factors。
The second floor looks at the fuse. The fuses are generally attached to the back of the fuselage, and some models also have built-in fuselage. It was pulled out to check the state of the metal wire inside the fuse tube, and it was replaced by the same specification. If you turn on the new fuselage and burn it immediately, it means that there are short circuits in the machine, and at that point no longer need to change the fuselage. Each break means that there are internal components that break through the short circuit. Repeated powering only expands the damage and requires a breakout to be checked。
The third layer screens power transformers and current filter circuits. The magnificent map works with large ring transformers, which are themselves highly reliable but are not in any way problematic. If the reactor has experienced lightning strikes or large voltage fluctuations, the primary circuit of the transformer may be burned, and the direct current resistance of the primary circuitry should normally be measured by a mass gauge, and if the transformer is broken, then there should be some resistance. Flow-through bridge and filter-capacitation short circuits are also common causes of failure to respond to the switch, requiring a one-by-one measurement of the location of the dismantling machine。
The fourth level considers protecting circuits. The map has a well-developed system of protection, including transient protection, straight flow protection, overheating protection, etc. If the protection circuit detects abnormality, locking off the launch, as evidenced by the failure to react. Method of judgement: disconnect all loudspeakers and signal lines and turn them on in five minutes alone if normal startup indicates that the external load triggers protection. If the charge cannot be activated after disconnection, the failure to protect the circuit itself or the direct flow deviation of the discharge output level may lead to the need for specialized testing。
The layout of the interior layout of the map is performed with a high degree of modularization, and the positioning failure of experienced maintenance staff is relatively clear. Branders, however, require maintenance qualifications, and the original plant spare parts and commissioning standards cannot be completely replaced by third-party service points if the official sale is strongly recommended during the warranty period. Subsistence equipment is also recommended for processing by a teacher with experience in the maintenance of the wheat map, and the driving circuits and power pyrotechnics of the blue watch will require professional operation。
