Haier HL22F2 Service Manual
Also see for HL22F2: Owner's manualTroubleshooting guide
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Contents
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Service ManualModel No.: HL22F2a4components commonly are called Electrostatically Sensitive (ES) Devices. The followingWHFKQLTXHVVKRXOGEHXVHGWRKHOSUHGXFHWKHLQFLGHQFHRIFRPSRQHQWGDPDJHFDXVHGE\electros static discharge (ESD).Electrostatically Sensitive (ES) DevicesSome semiconductor (solid-state) devices can be damaged easily by static electricity. Suchcomponents commonly are called Electrostatically Sensitive (ES) Devices. Examples of typicalES devices are integrated circuits and some field-effect transistors and semiconductor "chip"FRPSRQHQWV7KHIROORZLQJWHFKQLTXHVVKRXOGEHXVHGWRKHOSUHGXFHWKHQFLGHQFHRIFRPSRQHQWdamage caused by static by static electricity.,PPHGLDWHO\EHIRUHKDQGOLQJDQ\VHPLFRQGXFWRUFRPSRQHQWRUVHPLFRQGXFWRUHTXLSSHGassembly, drain off any electrostatic charge on your body by touching a known earth ground.Alternatively, obtain and wear a commercially available discharging wrist strap device, whichshould be removed to prevent potential shock reasons prior to applying power to the unit undertest.$IWHUUHPRYLQJDQHOHFWULFDODVVHPEO\HTXLSSHGZLWK(6GHYLFHVSODFHWKHDVVHPEO\RQDconductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure ofthe assembly.1-3-4. About lead free solder (PbF)This product is manufactured using lead-free solder as a part of a movement within theconsumer products industry at large to be environmentally responsible. Lead-free solder must beused in the servicing and repairing of this product.8VHWKHJHQHZLQJSDUWV VSHFL¿HGSDUWV6SHFLDOSDUWVZKLFKKDYHSXUSRVHVRI¿UHUHWDUGDQW UHVLVWRUV KLJKTXDOLW\VRXQG FDSDFLWRUV low noise (resistors), etc. are used.:KHQUHSODFLQJDQ\RIFRPSRQHQWVEHVXUHWRXVHRQO\PDQXIDFWXUH VVSHFL¿HGSDUWVVKRZQLQthe parts list.Safety ComponentƔ&RPSRQHQWVLGHQWL¿HGE\PDUNKDYHVSHFLDOFKDUDFWHULVWLFVLPSRUWDQWIRUVDIHW\1-3-6 Safety check after repairment&RQ¿UPWKDWWKHVFUHZVSDUWVDQGZLULQJZKLFKZHUHUHPRYHGLQRUGHUWRVHUYLFHDUHSXWLQWKHoriginal positions, or whether there are the positions which are deteriorated around the servicedplaces serviced or not. Check the insulation between the antenna terminal or external metal andthe AC cord plug blades. And be sure the safety of that.General Servicing Precautions |
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