The content of the comprehensive service list of weak current engineering operation and maintenance projects

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preface

Hello everyone, cloud intelligence knowledge sharing, common weak current system maintenance content, summarized today, the common weak current engineering operation and maintenance project service list, including the operation and maintenance content of dozens of subsystems, can be used directly materials, it is recommended to collect and spare.

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A list of services for operation and maintenance items
serial number	Specific projects	Specifics
1	On-site service	On-site troubleshooting. Arrive at the scene within 4 hours and solve the problem within 8 hours.
2	Telephone support services	Answer simple questions by phone and guide the troubleshooting of simple faults 7X24 hours
3	Run the report	During the service period, Party B submits to Party A a report on the operation status of the system, technical failures, equipment failures and other problems and solutions during the operation of the system, inspection conditions, equipment maintenance and replacement on a quarterly basis, so that users can grasp the phased operation of the system in detail.
4	Cleaning of the computer room	The internal hygiene of the computer room should be cleaned every three days and thoroughly cleaned once a month.
5	Visits are guaranteed	Twice a week visit is guaranteed, and experienced engineers are dispatched to the site to provide technical support
6	Centralized control system maintenance	1) Try to avoid the interference of electromagnetic field on the system, avoid moving the operation station and display in operation, and avoid pulling or damaging the equipment connection cable and communication cable. 2) Pay attention to dustproof, reasonably isolate the site from the control room, and clean it regularly to keep it clean to prevent dust from having an adverse impact on the operation and heat dissipation of components; 3) It is strictly forbidden to use non-genuine software and install software that is not related to the system. 4) Do a good job of backing up the control subdirectory files, and recording system data such as the PID parameters of the respective control loops and the positive and negative effects of the regulator. 5) Check whether the control host, monitor, mouse, keyboard and other hardware are in good condition, and whether the real-time monitoring is working normally. 6) After the system is powered on, the communication connector cannot collide with the cabinet and other conductive bodies, and the communication lines and communication connectors that are redundant with each other cannot touch each other, so as not to burn the communication network card. 7) Preventive maintenance: Carry out active maintenance in a planned manner to ensure the stable and reliable operation of the system and components, and the operating environment is good, and the components are detected and replaced in time to eliminate hidden dangers. Preventive maintenance should be carried out once a year with overhaul to grasp the operating status of the system and eliminate hidden faults.
7	LED display control system maintenance	1. Check that the power supply module is DC +5V (working voltage: 4.2~5.2V), and it is strictly forbidden to reverse the connection at the positive and negative poles of the power terminal (note: once reversed, the product will be burned and even cause a serious fire). 2. Check the power supply voltage: 220V±10% frequency: 50HZ±5% frequency. 3. Check the safety grounding, the grounding wire and the neutral line are isolated and reliable, and the grounding wire should be kept at a certain distance from the grounding wire of high-power electrical equipment; When it is found that there are abnormalities such as leakage, wire burning, and smoke, the machine should not be turned on repeatedly for detection, and the problem should be found in time.
8	LED display system maintenance	1. Maintain the stability of the power supply, do a good job of grounding protection, prevent lightning strikes, and do not use it under harsh natural conditions, especially in strong lightning weather; 2. The power supply must be provided for the large screen in stages, because the maximum power state of the whole screen will affect the entire power distribution system; 3. The LED display shall not play the highest brightness of the white all-white picture for more than half an hour, so as not to cause excessive current, power heating, LED lamp damage, affect the service life of the display, it is recommended to play dynamic video; 4. Note that the LED display product cannot be continuously turned on and off during use, and the interval between the two should be at least 1 minute.
9	Exhibit sound reinforcement system maintenance	(1) Depending on the size of the environmental dust and the length of daily use, arrange the maintenance interval reasonably, and regularly vacuum and clean the sound reinforcement equipment. (2) Avoid cleaning the surface of the equipment with harmful chemicals, you can use a soft cloth soaked in pure water or a little neutral detergent to wipe it clean, and then wipe it dry with a dry soft cloth of the same texture. Use soft cloths, soft brushes, balloons, vacuum cleaners to regularly clean the mixer and other equipment to keep it clean. (3) Regularly check the power supply voltage, ambient temperature, ambient temperature, and equipment indicator/table of the audio sound reinforcement system, and check according to the instructions for use of the equipment to keep the audio sound reinforcement system in good condition. (4) If the equipment is found to be faulty, the power supply should be cut off first.
10	Guided sound reinforcement system maintenance	(1) The attenuator on the power amplifier of the power amplifier should be placed in the position with the largest attenuation amount when the system is turned on and off, and then slowly adjusted to the appropriate position according to the requirements after the system power is turned on. (2) Prevent liquids, debris and dust from falling (3) Prevent the input stage from being seriously overexcited by equipment at all levels of the system. (4) Prevent the signal from being too strong and damaging the power amplifier and speaker system.
11	Human-computer interaction system maintenance	1. The grating head should be cleaned for 6 months, and there are no special maintenance requirements. Cleaning can be done with soft textiles or cotton swabs, with a certain amount of alcohol if necessary, and without prolonged exposure to water or other liquids 2. Verify that the equipment is in normal condition, no damage has occurred, the gap is reasonable, and the installation is stable. 3. The internal connection line is verified to be in good working condition, without any damage, and the gap is reasonable. Also verify that the connection between the display and the signal collector is working.
12	Projection fusion system maintenance	1) Backup of channel coordinates and edge blending program. 2) Check the reliability of the system connection cables. 3) Stent deformation compensation, adjust the software displacement image to compensate for the image displacement caused by the deformation of the stent. 6) Adjust the color temperature and color saturation to ensure that the color of multiple projectors is consistent without obvious chromatic aberration.
13	Multimedia server maintenance	1. Software Maintenance 1. Database services After a long-term operation of the database, the database performance needs to be adjusted to make it into an optimal state. The data in the database is the most important, and if this data is lost, the loss is very huge, so it is necessary to back up the database regularly just in case. 2. Maintenance of the operating system The importance of the operating system, which is the software foundation on which a server runs, cannot be overstated. 4. Network service maintenance There are many network services in the server, such as WWW service, DHCP service, SMTP service, FTP service, etc., as the server provides more and more services, the system is also prone to confusion, at this time, it may be necessary to reset the parameters of each service to make it run normally. 2. Hardware maintenance 1. Dust removal regularly Dust is the biggest killer of servers, so you need to dust your servers regularly. For the server, dust is very deadly, will seriously affect the service life of the server, the dust removal method is the same as the ordinary PC dust removal method, especially pay attention to the dust removal of the power supply. 3. Replace and unload the equipment regularly It should be noted that there are many brands of server chassis with special designs that require special tools or mechanisms to open, and when removing the case cover, you need to read the instructions carefully and do not forcibly disassemble them. In addition, it must be done with a complete power outage and the server is well grounded, even for hot-swappable devices, to prevent damage to the equipment caused by static electricity.
14	Cabinet room energy management system maintenance	1) Understand the power input and output: input voltage, input maximum current, output voltage, maximum output current, number of channels, socket type. 2) Familiar with the front panel, that is, the control interface: timing toggle switch; Channel status LEDs. 3) Set the channel delay interval, which is generally a fixed value, 1~1.5 s. 4) Understand switching devices: that is, the internal power supply on-off controller, which is generally composed of relays. 5) Control input: detect IO control interface (TTL output load is short-circuited, etc.) 7) Control communication: RS232 control interface, used for cascading and management between sequencers, that is, the expansion of the system, transmission address code and status information. 8) Correctly connect according to the requirements, pay attention to the switch sequence and power capacity, and the system connection corresponds to one by one, it is best to do a good label on the power plug, check before each use, and if possible, you can do a good backup of the sequencer. 9) For high-power consumption equipment such as post-amp amplifiers, due to the large working current, the connectors need to be checked regularly, especially in mobile performance applications, the vibration during transportation will cause the plug to loosen, and see if there is oxidation in humid weather, so as to avoid poor contact or increased resistance after oxidation, and heating damage. 10) Mainly refer to the number of access devices, the maximum power consumption of high-power equipment such as power amplifiers to determine the timer selection, socket types and access currents are different, respectively, access to the mixer, audio processor, peripheral equipment, front and rear power amplifiers, etc., the number of channels can not only meet the actual work needs, but also avoid waste of resources. 11) In the cascade use and expansion of many devices, it is necessary to pay attention to the total current accessed, and it is best to be able to control it with the power supply such as lights.
15	LED power supply and distribution system maintenance	1. Appearance and environmental inspection Temperature: environmental conditions: 0~40°C The relative humidity is below 85%. .振幅小于0.5mm (10~55Hz) No large amount of dust, salt and iron filings .24VDC outgoing voltage measurement: whether it is within the normal range Test the insulation of the system after the power is turned off, and use the shake meter to test the insulation of the equipment 2. Control cabinet cleaning When the equipment is powered off, cover the electronic components with heat dissipation holes such as PLC and inverter, and it is best to remove the PLC module. Only use the vacuum cleaner, not compressed air blowing, because the compressed air will blow dust into the inside of the equipment, and the compressed air often contains water, and it will short circuit when it enters the inside of the equipment. Check whether the wiring is loose after suctioning. 3. Cable inspection Whether the large cable is loose: if it is loose, it is very easy to burn out. Whether the large cable joint is blackened: if there is, pay attention to check whether the wire nose is not pressed or the contact current is too large. Fourth, equipment grounding inspection Grounding measurement: pay attention to check whether the shielding layer is aging, the aging of the shielding layer brings bad grounding, and it is easy to cause the site to be lost. Analog signal grounding measurement: The principle is the same as above. Check whether the grounding wire is corroded, and the rust will be treated. 5. Contactor inspection The installation screws of the large contactor and the inlet and outlet wires are loose Large contactor contact status: whether there are burn marks at the main contact, check whether the arc extinguishing cover is burned black and damaged Contactor terminal status: whether it is blackened Pick-up time, voltage test: Check the pick-up time of the contactor, as well as the on-off of the incoming and outgoing lines Whether the contactor pick-up sound is normal, no noise, and how to make a "buzzing" sound after suction, disassemble and check the condition of the contact. Sixth, the copper bar inspection Check whether the heat shrinkable tubing is damaged; Check the connection of the copper bar: if the appearance of the copper is discolored, it means that the copper bar may be overheated, if necessary, then disassemble the copper bar, align it flat, apply conductive paste, and tighten it. 7. Relay inspection If the relay does not engage or does not open during the working process: replace it in time.
16	Interactive all-in-one maintenance	1. If a water droplet or drink falls on the screen, it will stop the software from reacting, which is because the water droplets and fingers have similar characteristics, and the water droplets need to be wiped off. 2. The touch screen controller can automatically judge the dust, but too much dust will reduce the sensitivity of the touch screen, just wipe the screen clean with a dry cloth. 3. Use glass cleaner to clean dirty fingerprints and oil stains on the touch screen.
17	Projection display maintenance	1. It is also very convenient to replace the filter screen regularly, manually remove the filter screen, brush off the dust with a brush and reinstall it; 2. The projector prevents collision and vibration of the projector; 3. Strictly prevent serious impact, the problem of colliding with the projector in a non-working state will not be too big, but in the process of working the projector, the fuselage generates a lot of heat, at this time, if it collides with the projector, the projector is squeezed and vibrate, it is very easy to damage the core components of the projection, in addition, the temperature of the projector bulb reaches a very high temperature during the working process, if it encounters a sudden external vibration, it is easy to cause the bulb to rupture or explode. 4. Use the projector correctly to prolong the life of the lamp. After the projector works for a long time, the heat inside the lamp will continue to accumulate, so we should try to ensure that the projector is not used for more than 4 hours each time, and pay attention to the dust removal of the body regularly.
18	Video surveillance system maintenance	1. Software maintenance (1) Check the video playback regularly to prevent changes in the video settings due to accidental occurrences. Check whether there is a time period when the video is not recorded through video playback, find the problem in time, and prevent the accident from being found that the corresponding time is not recorded when the accident occurs, resulting in undue losses. (2) Regularly check whether the video surveillance is recording to prevent damage to the database caused by sudden power failure. If the database is corrupted and not repaired in time, a failure will occur that cannot be recorded, and the database will need to be repaired manually. (3) Regularly check the system log of the operating system to prevent the system from recording due to hard disk damage. 2. Hardware maintenance (1) Ensure the cleanliness of the computer environment of the video surveillance system, and prevent the failure of hardware such as hard disk and system motherboard due to too much dust and too high humidity/temperature. (2) Regularly inspect the system line to prevent the occurrence of faults such as line disconnection or leakage. (3) Regularly check the connection of the equipment to prevent the failure of the equipment from working normally due to the loose connection between the connection and the equipment. (4) Regularly check the connection between the network cable and the equipment to prevent the system from failing to work normally due to the network cable falling off and loosening. (5) Clean the front-end camera regularly to prevent excessive dust accumulation and affect the effect of security monitoring. (6) Regularly inspect the outdoor protective device to prevent the equipment from being destroyed.
19	Integrated wiring system maintenance	1) Regularly inspect and eliminate the line interference sources of the wiring system in time, improve the network operation speed, regularly test the quality of the network cable, and ensure the reliable operation of the network; (2) Do a good job of recording the layout of the equipment in the wiring room and equipment room. Indicate the topology diagram of the physical wiring, the type and length of the cable, the physical location of the wall plate and the patch panel, and the number of the network cables; (3) Check the labels on the twisted pair, on the panel, on the distribution frame, and on the jumper in the computer room, complete the labels that have fallen off, fix the labels that are not firmly adhered to, and replace the damaged labels; (4) Check the flatness of the integrated wiring tray, and repair it immediately if it is inconsistent with the installation drawings such as deformation and bracket screw falling off, so as to avoid sudden interruption of information business caused by broken or falling off of the tray; (5) Remove the dust on the integrated wiring system inside and outside the cabinet; (6) Conduct regular physical link tests, mainly to check whether the line is smooth, whether the operating parameters meet the requirements, and whether the line environment and the surrounding electromagnetic field interference; (7) Use the performance tester to conduct random inspections on copper channels and unused optical fiber channels (because optical fiber channels are delicate and easy to be affected by wear and dust, so it is not recommended to conduct random inspections for the optical fiber channels being used, so as not to damage the optical fiber modules of optical fiber channels or network equipment due to testing), and the test methods are permanent link tests and performance tests of the jumpers used, and check with the original records; (8) The electronic distribution frame system should also be sampled to check the faults that can be artificially set, and check the response time and alarm sound of the real-time alarm; In the same way, the integrated wiring management software (including the software in the electronic distribution frame) should manually check the electronic records, including the construction records and the daily records of the last maintenance until now, and the construction records should be checked for completeness and should not be lost or damaged.
20	Wireless network system maintenance	1. Use commands to test connectivity to routes, switches, and networks. 2. Check the working status of all routes, switch ports, and status lights to ensure that the device is working properly. 3. Check the working status of the device (switch, router) to ensure that the network connection is normal. 4. Check the network cables to make sure they are intact.
21	Spare parts management	1. Classification and hierarchical management. Spare parts and materials with strong versatility and slightly higher value are controlled in a key manner, such as: 2. Establish enterprise standards for spare parts and materials (list consumption catalog). 3. Regularly count the consumption cycle and procurement cycle of main spare parts and materials.
22	Tool management	1. Establish a "tool summary account" 2. It is forbidden to use tools in violation of operating procedures and cause damage to tools, do a good job in the lubrication, anti-corrosion, sanitation and maintenance of electrical parts of tools, and always keep tools in good condition.
23	Data center security management	Prevent equipment damage: The computer room is equipped with sophisticated information equipment, which is valuable and an important asset of the enterprise. Enterprises should manage and use these equipment well to prevent damage. Fire prevention: The computer room should be kept clean and hygienic, and other equipment unrelated to the computer room should not be placed, let alone sundries. During daily operation, it is strictly forbidden to bring flammable, explosive, strong magnetic materials and other items unrelated to the work of the computer room into the computer room. Anti-leakage: In daily work, be responsible for security protection, and prohibit non-staff from entering the computer room by means of fingerprint recognition and security access control.
24	Equipment repairs	If the equipment fails and needs to be repaired, the maintenance fee will be charged separately.