Samsung HWD450XN ET-SB-EX-SI 1314874651 free download

File name HWD450XN_ET-SB-EX-SI_1314874651.pdf

Crystal Surround Air Track Model Name HW-D450 Model Code HW-D450/XN SERVICE MANUAL Crystal Surround Air Track HW-D450 Refer to the service manual in the GSPN (see the rear cover) for more information. 1. Precaution 1. Precaution Follow these safety instructions while servicing the ESD to prevent damage and to protect against potential hazards such as electrical shock and X-rays. 1.1. Safety Precautions 1) When reinstalling the chassis and its assemblies, be sure to restore all of the protective devices, including the control knobs and the compartment covers. 2) Make sure that there are no cabinet openings through which people (particularly children) can make contact with dangerous internal components. 3) Design Alteration Warning: Never alter or add to the mechanical or electrical design of the unit. Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or additions will void the manufacturer's warranty. 4) Leakage Current Hot Check Figure 1.1 AC Leakage Test: WARNING Do not use an isolation transformer during this test. Use a leakage-current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). With the unit completely reassembled, plug the AC cord directly into a 120V AC outlet. With the unit's power switched from the ON to the OFF position, measure the current between a known ground and all exposed metal parts. Known Grounds - Earth Known Metal parts - screwheads, metal cabinets, etc. LEAKAGE (READING DEVICE CURRENT SH OULD NOT BE UNDER TES TER ABOVE 0.5mA) TES T TES T ALL EXPO S ED METAL SU RFACES 2-WIRE CORD ALSO TES T WITH PLUG REVER S ED (US ING AC EARTH ADAPTER P LUG GROUND AS R EQ UIRED) Figure 1.1 AC Leakage Test Copyright