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Summary of Contents for Samsung MX-ST4 B Series
- Page 1 Repair Guide Basic Model MX-ST40B/ZA Applicable Model MX-ST4*B*** Ver.1.0...
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Page 2: Table Of Contents
2. Disassembly and Reassembly 2-1. Warning 2-2. Product Disassembly 2-3. Product Reassembly Self-Repair Legal Disclosures Usage Notices All content and information provided in this document, are subject to change without notice at any time. This document is intended for informational purposes only. You can download a copy of your product Manuals and Software. If you don’t understand the information provided in this document or have any doubts about your ability to safely undertake the repair, visit https://www.samsung.com/us/suppor t or call 1-800-Samsung for other repair options . Precautions for Repair Samsung is not liable for any damage or defect determined to be caused by repair by a non-authorized serviceprovider, self-repair or non-professional repair of the product. Samsung is not liable for any resulting damage to the product, person, or property, or any injury or other product safety issue caused by any attempt to repair the product by any person other than a Samsung- authorized service provider. Any damage or defect to product resulting from a repair, or an attempt to repair, the product by any person other than a Samsung certified service provider will not be covered by the warranty. Visit Samsung.com to view the product information, repair guides, related material, and safety information. ·... - Page 3 Terms of use, in whole or in part, please stop using this manual immediately. This Service Manual is a property of Samsung Electronics Co.,Ltd. © 2023 Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable All rights reserved.
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Page 4: Precautions
Precautions 1. Precautions • Follow these safety instructions while servicing the ESD to prevent damage and to protect against potential hazards such as electrical shock and X-rays. • For continued safety, do not attempt to modify the circuit board. • Disconnect the Disconnect the AC power and DC power jack before servicing. - Page 5 Precautions 5. Insulation Resistance Cold Check : Antenna (1) With the unit's AC plug disconnected from the Terminal AC source, connect an electrical jumper cross the two AC prongs. (2) Set the power switch to ON. Exposed Metal Part (3) Measure the resistance between the shorted AC plug and any exposed metallic parts.
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Page 6: Servicing Precautions
Precautions 1-2. Servicing Precautions • An electrolytic capacitor installed with the wrong polarity might explode. • Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. • If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety pecautions. -
Page 7: Precautions For Electrostatically Sensitive Devices (Esds)
Precautions 1-3. Precautions for Electrostatically Sensitive Devices (ESDs) • Some semiconductor ("solid state") devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs). Examplesinclude integrated circuits and some field-effect transistors. The following techniques willreduce the occurrence of componentdamage caused by static electricity. -
Page 8: Installation Precautions
If this is the case, make sure to contact a local Samsung service center before installing the product. (Special places : a place where a large amount of dust is accumulated ; where chemical substances are used or the ambient temperature is too high or low;... -
Page 9: Disassembly And Reassembly
Disassembly and Reassembly 2 . Disassembly and Reassembly 2-1. Product Disassembly Description Picture Description 1. Remove Bottom Cover & Cosmetic Covers 1.1 Remove 3 screws of the rubber feet and remove the 3 rubber feet. Remove 9 screws on the bottom cover, then separate the bottom cover . - Page 10 Disassembly and Reassembly 2-2. Product Disassembly Description Picture Description 2. Remove Top Cover Assy. 2.1 Upside down the unit and remove 3 screws. SCREW PART CODE : AH81-15603A 2.2 Lift up the cover disconnect the Power Cable and FFC cable, separate the top cover Assy. Power Cable Top cover FFC Cable...
- Page 11 Disassembly and Reassembly Description Picture Description 3. Remove IR Board & Main Board. 3.1 Remove 1 screw, disconnect FFC cable and separate the IR board. Screw IR ↔ Main FFC SCREW PART CODE : AH81-15603A IR BOARD PART CODE: AH81-15578A 3.2 Remove 8 cables of the main board.
- Page 12 Disassembly and Reassembly Description Picture Description 4.3 Remove 3 screws and separate the battery by grapping the battery handle. SCREW PART CODE : AH81-15603A BATTERY PART CODE: AH81-15582A 5. Remove Rear Cover Assy. 5.1 Remove 3 screws of the rear terminal assy, pull the rear panel assy from rear cover.
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Page 13: Product Reassembly
Disassembly and Reassembly 2-3. Product Reassembly Note: Reassembly procedures are in the reverse order of disassembly procedures. ※ Cautions ①. Check if key board and BT module are properly ① connected. If the connection is incorrect, the BT function may not work. ②... - Page 14 Disassembly and Reassembly 2-3. Product Reassembly ※ Cautions ⑦. Check if AU board and Main board are properly ⑦ connected. If the connection is incorrect, the AUX1, AUX2, RCA OUT and back key may not work. ⑧. When assembling, plug in the power cable at last, ⑧...
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