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Preface Notebook Computer NK50SZ Service Manual...
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Preface Notice The company reserves the right to revise this publication or to change its contents without notice. Information contained herein is for reference only and does not constitute a commitment on the part of the manufacturer or any subsequent ven- dor.
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This manual is intended for service personnel who have completed sufficient training to undertake the maintenance and inspection of personal computers. It is organized to allow you to look up basic information for servicing and/or upgrading components of the NK50SZ se- ries notebook PC.
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Preface IMPORTANT SAFETY INSTRUCTIONS Follow basic safety precautions, including those listed below, to reduce the risk of fire, electric shock and injury to per- sons when using any electrical equipment: 1. Do not use this product near water, for example near a bath tub, wash bowl, kitchen sink or laundry tub, in a wet basement or near a swimming pool.
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Preface Instructions for Care and Operation The notebook computer is quite rugged, but it can be damaged. To prevent this, follow these suggestions: Don’t drop it, or expose it to shock. If the computer falls, the case and the components could be damaged. Do not expose the computer Do not place it on an unstable Do not place anything heavy...
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Preface 4. Avoid interference. Keep the computer away from high capacity transformers, electric motors, and other strong magnetic fields. These can hinder proper performance and damage your data. 5. Take care when using peripheral devices. Use only approved brands of Unplug the power cord before peripherals.
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Preface Battery Precautions • Only use batteries designed for this computer. The wrong battery type may explode, leak or damage the computer. • Do not continue to use a battery that has been dropped, or that appears damaged (e.g. bent or twisted) in any way. Even if the computer continues to work with a damaged battery in place, it may cause circuit damage, which may possibly result in fire.
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Preface Related Documents You may also need to consult the following manual for additional information: User’s Manual on CD/DVD This describes the notebook PC’s features and the procedures for operating the computer and its ROM-based setup pro- gram. It also describes the installation and operation of the utility programs provided with the notebook PC. System Startup 1.
Chapter 1: Introduction Overview This manual covers the information you need to service or upgrade the NK50SZ series notebook computer. Information about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual. Information about dri- vers (e.g.
Introduction Specifications Processor Options Memory Intel® Core™ i7 Processor Dual Channel DDR4 i7-10700 (2.90GHz) Two 260 Pin SO-DIMM Sockets 16MB Smart Cache, 14nm, DDR4-2933MHz, TDP 65W Supporting up to 3200MHz DDR4 Memory Intel® Core™ i5 Processor Memory Expandable up to 32GB Latest Specification Information i5-10600 (3.30GHz) Compatible with 4GB, 8GB or 16GB Modules...
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Introduction Security M.2 Slots Security (Kensington® Type) Lock Slot Slot 1 for Combo WLAN and Bluetooth Module BIOS Password Slot 2 for PCIe Gen3 x4 SSD Intel® PTT for Systems Without TPM Hardware (Factory Option) Slot 3 for 4G Module (Factory Option) TPM 2.0 Communication Keyboard...
Introduction External Locator - Top View with LCD Panel Open Figure 1 Top View 1. PC Camera 2. *PC Camera LED *When the PC camera is in use, the LED will be illuminated. 3. Built-In Microphone 4. Display 5. Power Button 6.
Introduction External Locator - Front & Right Side Views Figure 2 Front View 1. LED Indicators FRONT VIEW Figure 3 Right Side View 1. Multi-in-1 Card Reader RIGHT SIDE VIEW 2. 2-In-1 Audio Jack (Headphones/ Headset) 3. Microphone-In Jack 4. USB 2.0 Port 5.
Introduction External Locator - Left Side & Rear View Figure 4 Left Side View 1. Vent 2. External Display Port 3. HDMI-Out Port LEFT SIDE VIEW 4. USB 3.2 Gen 1 Type-C Port 5. USB 3.2 Gen 1 Type-A Port 6.
Introduction Mainboard Overview - Top (Connectors) Figure 9 Mainboard Top Connectors 1. Battery Connector 2. External Display Port 3. HDMI-Out Port 4. USB Port 3.2 (Type C) Connector 5. USB Port 3.2 (Type A) Connector 6. USB Port 2.0 (Type A) Connector 7.
Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the NK50SZ series notebook’s parts and subsystems. When it comes to reassembly, reverse the procedures (unless otherwise indicated). We suggest you completely review any procedure before you take the computer apart.
Disassembly NOTE: All disassembly procedures assume that the system is turned OFF, and disconnected from any power supply (the battery is removed too). Maintenance Tools The following tools are recommended when working on the notebook PC: • M3 Philips-head screwdriver •...
Disassembly Maintenance Precautions The following precautions are a reminder. To avoid personal injury or damage to the computer while performing a removal and/or replacement job, take the following precautions: Power Safety Don't drop it. Perform your repairs and/or upgrades on a stable surface. If the computer falls, the case and other components Warning could be damaged.
Disassembly Disassembly Steps The following table lists the disassembly steps, and on which page to find the related information. PLEASE PERFORM THE DISASSEMBLY STEPS IN THE ORDER INDICATED. To remove the Battery: To remove the Wireless LAN Module: 1. Remove the battery page 2 - 5 1.
Disassembly Removing the Battery Figure 1 Battery Removal 1. Turn the computer off, and turn it over. 2. Slide the latch in the direction of the arrow (Figure 1a). a. Slide the latch in the 3. Slide the latch in the direction of the arrow. direction of the arrow.
Disassembly Removing the Hard Disk Drive Figure 2 The hard disk drive can be taken out to accommodate other 2.5" serial (SATA) hard disk drives with a height of 7mm HDD Assembly (h). Follow your operating system’s installation instructions, and install all necessary drivers and utilities (as outlined in Removal Chapter 4 of the User’s Manual) when setting up a new hard disk.
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Disassembly 5. Remove screws from the HDD assembly (Figure 3d). Figure 3 6. Slightly lift and pull the hard disk assembly in the direction of arrow (Figure 3e HDD Assembly 7. Lift the hard disk assembly out of the bay (Figure 3f Removal (cont’d.) 8.
Disassembly Removing the Keyboard Figure 4 1. Turn off the computer, remove the battery (page 2 - 5) and bottom cover (page 2 - Keyboard Removal 2. Remove screws from the bottom of the computer. 3. Open it up with the LCD on a flat surface before pressing at point to release the keyboard module (use the spe- a.
Disassembly Removing and Installing the Processor Figure 5 Processor Processor Removal Procedure Removal 1. Turn off the computer, remove the battery (page 2 - 5) and bottom cover (page 2 - Procedure 2. Disconnect the cable and remove screws from the CPU fan & heat sink unit in the order indicated on the label (i.e screw first through to screw...
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Disassembly 4. Press down and hold the latch (with the latch held down you will be able to release it). 5. Move the latch and bracket fully in the direction indicated to unlock the CPU(Figure 6d). Figure 6 6. Carefully (it may be hot) lift the CPU up out of the socket (Figure 6e).
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Disassembly Processor Installation Procedure Figure 7 1. Insert the CPU ; pay careful attention to the pin alignment (Figure 7a), it will fit only one way (DO NOT FORCE Processor Installation IT!). 2. Move the bracket and latch fully in the direction indicated to lock the CPU. 3.
Disassembly Removing the System Memory (RAM) Figure 8 RAM Module The computer has two memory sockets for 260 pin Small Outline Dual In-line Memory Modules (SO-DIMM) supporting Removal DDR4 3200 MHz. The main memory can be expanded up to 16GB. The total memory size is automatically detected by the POST routine once you turn on your computer.
Disassembly Removing the M.2 SSD Module Figure 9 M.2 SSD Module 1. Turn off the computer, remove the battery (page 2 - 5) and bottom cover (page 2 - Removal 2. The M.2 SSD module will be visible at point on the mainboard (Figure 9a).
Disassembly Removing the Wireless LAN Module Figure 10 Wireless LAN 1. Turn off the computer, remove the battery (page 2 - 5) and bottom cover (page 2 - Module Removal 2. The Wireless LAN module will be visible at point on the mainboard (Figure 10a).
Disassembly Wireless LAN, Combo, & LTE Module Cables Note that the cables for connecting to the antennae on WLAN, WLAN & Bluetooth Combo, and LTE modules are not labelled. The cables/covers (each cable will have either a black or transparent cable cover) are color coded for identifi- cation as outlined in the table below.
Disassembly Removing the LTE Module Figure 11 LTE Module 1. Turn off the computer, remove the battery (page 2 - 5) and bottom cover (page 2 - Removal 2. The LTE module will be visible at point on the mainboard (Figure 11a).
Disassembly Removing the CCD Figure 12 CCD Removal 1. Turn off the computer, turn it over to remove the battery (page 2 - 2. Lay the computer down on a flat surface with the top case up forming a 90 degree angle. Carefully remove the a.
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Disassembly 5. Disconnect the cable (Figure 13c). Figure 13 6. Remove the CCD module (Figure 13d). CCD Removal 7. Reverse the process to install a new CCD module. (cont’d) c. Disconnect the cable. d. Remove the CCD mod- ule. 11.
Appendix A:Part Lists This appendix breaks down the NK50SZ series notebook’s construction into a series of illustrations. The component part numbers are indicated in the tables opposite the drawings. Note: This section indicates the manufacturer’s part numbers. Your organization may use a different system, so be sure to cross-check any relevant documentation.
Part List Illustration Location The following table indicates where to find the appropriate part list illustration. Table A - 1 Part List Illustration Part Location page A - 3 page A - 4 Bottom page A - 5 Main Board page A - 6 page A - 7 A - 2...
Schematic Diagrams Appendix B: Schematic Diagrams This appendix has circuit diagrams of the NK50SZ notebook’s PCB’s. The following table indicates where to find the appropriate schematic diagram. Diagram - Page Diagram - Page Diagram - Page Table B - 1...
Schematic Diagrams VGA Frame Buffer Interface Term Description The total trace length measured NH70EG NO STUFF from GPU ball to capacitor is Under GPU Frame Buffer Interface no more than 150 mil U28E The total trace length measured from GPU ball to capacitor is no Near GPU more than 850 mil COMMON...
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