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Summary of Contents for UNI-T UT8806E
- Page 1 Service Manual UT8806E Desktop Digital Multimeter...
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Page 2: Warranty Service
UNI-T or an authorized UNl-T distributor. Power cords, accessories and fuses, etc. are not included in this warranty. If the product is proved to be defective within the warranty period, UNI-T reserves the rights to either repair Instruments.uni-trend.com 2 / 29... - Page 3 This warranty is written by UNI-T for this product, and it is used to substitute any other express or implied warranties. UNI-T and its distributors do not offer any implied warranties for merchant ability or applicability purposes.
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Page 4: Safety Information
Users must follow the following conventional safety precautions in operation, service and maintenance of this device. UNI-T will not be liable for any personal safety and property loss Warning caused by the user’s failure to follow the following safety precautions. This device is designed for professional users and responsible organizations for measurement purposes. - Page 5 Service Manual UT8806E Desktop Digital Multimeter proceed to the next step until you fully understand and meet the conditions stated in the “Warning” statement. It indicates possible danger, which may cause damage to this device or other equipment if you fail to follow a certain procedure or condition. If Caution the “Caution”...
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Page 6: Safety Requirements
Warning The UT8806E Desktop Digital Multimeter only supports measurement of power supplies under CAT II (600V) type overvoltage conditions, so please use the instrument strictly in accordance with this measurement environment. - Page 7 Abnormality If this device may be faulty, please contact the authorized maintenance personnel of UNI-T for testing. Any maintenance, adjustment or parts replacement must be done by the relevant personnel of UNI-T. Do not block the ventilation holes at the side and back of this device;...
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Page 8: Environmental Condition
Service Manual UT8806E Desktop Digital Multimeter Environmental Condition This instrument is suitable for the following environment. Indoor use Pollution degree 2 In operating, the altitude should lower than 3000 meters; in non-operating, the altitude should lower than 15000 meters Unless otherwise specified, operating temperature is 10 to +40℃;... -
Page 9: Electrostatic Protection
Ensure all the instruments are properly grounded to prevent the accumulation of static Serial Number and System Information UNI-T continually improves the performance, availability, and reliability of its products. UNI-T service personnel have access to check the serial number and system information. -
Page 10: Operation Information
This manual covers servicing the following products: UT8806E check for a specific product name in the header, title, table or chart title or text at the top of the page. Material without any specific product name applies to all products in the manual. - Page 11 Service Manual UT8806E Desktop Digital Multimeter Handle Accessory List Article Description Handle Pull the handle to both sides by slightly force, rotate vertically along the direction of the host panel to the top of the machine, and then pull away...
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Page 12: Outer Frame
Service Manual UT8806E Desktop Digital Multimeter Outer Frame Accessory List Article Description KM3X8 quincunx Use T10 quincunx screwdriver to remove 2 screws screw Pull to the back of the case Outer frame Take it down Fuse cover Product body Rear Panel... -
Page 13: Control Board
Service Manual UT8806E Desktop Digital Multimeter Control Board Accessory List Article Description KM3X7 quincunx screw Use T10 quincunx screwdriver to remove 2 screws KM3X6 quincunx screw Use T10 quincunx screwdriver to remove 4 screws PB3X7 quincunx self- Use T10 quincunx screwdriver to remove 4 screws... - Page 14 Service Manual UT8806E Desktop Digital Multimeter Product Body Accessory List Article Description PM3X6 quincunx machine screw Use T10 quincunx screwdriver to remove 7 screws PM3X8 quincunx machine screw Use T10 quincunx screwdriver to remove 1 screw Hexagonal flange nut _4X0.7...
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Page 15: Maintenance
Service Manual UT8806E Desktop Digital Multimeter 4. Maintenance This section contains the information needed to do periodic and corrective maintenance on the instrument. ESD Prevention Before servicing this product, read the General Safety Summary and the Service Safety Summary at the front of the manual, as well as the following ESD information. -
Page 16: Exterior Cleaning
Use only deionized water when cleaning the front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner for cabinet parts. Before using any other type of cleaner, consult UNI-T Service Center or representative. Appearance Inspection Inspect the outside of the instrument for damage, wear, and missing parts. - Page 17 Model and serial number of the instrument Reason for returning A complete description of the service request Mark the address of the UNI-T Service Center and also your own return address on the shipping carton in two prominent locations. Instruments.uni-trend.com 17 / 29...
- Page 18 Service Manual UT8806E Desktop Digital Multimeter 5. Replacement Disassembly/Replacement Tool Use the tool is shown in the following table to replace the module of the digital power meter. Tool Name Description Quincunx The model refers to the removal steps screwdriver...
- Page 19 Service Manual UT8806E Desktop Digital Multimeter Power fuse, as shown in the following figure. Reverse execute the above step to reinstate. Replace Handle Explanation This section describes how to remove and replace handle. Rotating the handle to removal position and pull out by slightly force. If the handle is damaged, it can be replaced by this procedure, as shown in the following figure.
- Page 20 Service Manual UT8806E Desktop Digital Multimeter Remove Case and Replace 10A Fuse Explanation The following step is to replace 10A fuse. Remove the bottom protective cover and replace the fuse, as shown in the following figure. Remove and Replace Key Board Explanation The following operations can be used to disassemble the front panel, rear panel and outer frame;...
- Page 21 Service Manual UT8806E Desktop Digital Multimeter 3. Use T10 quincunx screwdriver to remove 4 screws securing the input socket on the front and rear panel and remove 8 screws on the side to take out the front and rear panel.
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Page 22: Remove Main Board
Service Manual UT8806E Desktop Digital Multimeter 5. Use T10 quincunx screwdriver to remove 9 screws securing the surface board, as shown in the following figure. 6. The displace screen can only be taken out when the key board is removed, as shown in the following figure. - Page 23 Service Manual UT8806E Desktop Digital Multimeter 3. Use T10 quincunx screwdriver to remove 1 screw securing the shielding cover of main board, and then take out the main board to repair or replace parts of unit, as shown in the following figure.
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Page 24: Remove Rear Panel
Service Manual UT8806E Desktop Digital Multimeter Remove Rear Panel Explanation The following operations can be used to disassemble the rear panel and power module. Use T10 quincunx screwdriver to remove 4 screws on the left and right side of the rear panel, as shown in the following figure. - Page 25 Service Manual UT8806E Desktop Digital Multimeter Remove Fan The following operations can be used to disassemble the fan. Steps Disconnect the wire connecting to the fan and main board, as shown in the following figure. Use T10 quincunx screwdriver to remove 4 screws on the middle frame securing the fan, as shown in the following figure.
- Page 26 Service Manual UT8806E Desktop Digital Multimeter Remove Transformer The following operations can be used to disassemble the transformer. Steps Disconnect the wire connecting to the transformer and power socket, as shown in the following figure. Use T10 quincunx screwdriver and needle-nose pliers to remove 2 screws on the middle frame securing the transformer, as shown in the following figure.
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Page 27: Troubleshooting
The information and procedure contains in this section can help you determine whether the instrument has problem. If the power is failure, please send the instrument back to UNI-T Service Center for repair. Because the user cannot replace the internal electronic components or modules. -
Page 28: Troubleshooting Flowchart
After Maintenance If the instrument cannot pass the performance verification test after remove and replace the power module, please send the instrument back to UNI-T Service Center for adjustement. Instruments.uni-trend.com 28 / 29... -
Page 29: Warranty Overview
If the product proves defective during the warranty period, UNI-T will repair and replace it as detailed in the warranty statement. To arrange for repairs or to obtain a copy of the full warranty statement, please contact the nearest UNI-T sales and repair office.
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