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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 NL50MU / NL51MU / NL52MU series 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 Avoid interference. Keep the computer away from high capacity transformers, electric motors, and other strong mag- netic fields. These can hinder proper performance and damage your data. 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 NL50MU / NL51MU / NL52MU series notebook computer. Information about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual.
Introduction External Locator - Top View with LCD Panel Open Figure 1 Top View 1. Webcam 2. *Camera LED *When the PC camera is in use, the LED will be illuminated in white. 3. Built-In Array Microphone 4. Display 5. Vent 6.
Introduction External Locator - Front & Right Side Views Figure 2 Front View FRONT VIEW Figure 3 Right Side View 1. Speaker 2. USB 3.2 Gen 2 Type-C Port (Factory Option) USB 3.2 Gen 2 Type-C Port with DisplayPort and Power Delivery RIGHT SIDE VIEW (DC-In)
Introduction External Locator - Left Side & Rear View Figure 4 Left Side View 1. Security Lock Slot 2. RJ-45 LAN Jack 3. MicroSD Card LEFT SIDE VIEW Reader 4. USB 2.0 Port 5. (Factory Option) SIM Card Socket 6. 2-In-1 Audio Jack (Headphone and Microphone) 7.
Introduction External Locator - Bottom View Figure 6 Bottom View 1. Vent 2. RJ-45 LAN Jack 3. Speakers Overheating To prevent your com- puter from overhea- ting, make sure no- thing blocks any vent while the computer is in use. External Locator - Bottom View 1 - 7...
Introduction Mainboard Overview - Top (Connectors) Figure 9 Mainboard Top Connectors 1. DC-In Jack 2. HDMI-Out Port 3. USB 3.2 Gen 2 Type-A Port 4. USB 3.2 Gen 2 Type-C Port 5. LED Keyboard Connector 6. Keyboard Cable Connector 7. Power BTN Connector 1 - 10 Mainboard Overview - Top (Connectors)
Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the NL50MU / NL51MU / NL52MU 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 CCD Module: 1. Remove the battery page 2 - 5 1.
Disassembly Removing the Battery Figure 1 Battery Removal - Note that battery removal procedure will differ depending on the battery type installed: 36WH • See 36WH Battery Upgrade Process on page 2 - 5 • See 48WH Battery Upgrade Process on page 2 - 7 a.
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Disassembly 6. Carefully disconnect the cable , then remove screws (Figure 2d Figure 2 7. Lift the battery off the computer (Figure 2e Battery Removal - 8. Reverse the process to install a new battery (do not forget to replace all the screws and bottom cover). 36WH (cont’d.) 9.
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Disassembly 48WH Battery Upgrade Process Figure 3 1. Turn off the computer, turn it over. Battery Removal - 2. Remove screws on the bottom case (Figure 1a). 48WH 3. Note to remove screws , do so with the screwdriver angled at about 90 degrees to the computer surface as shown (Figure 1b a.
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Disassembly 6. Carefully disconnect the cable , then remove screws (Figure 2d Figure 4 7. Lift the battery off the computer (Figure 2e Battery Removal - 8. Reverse the process to install a new battery (do not forget to replace all the screws and bottom cover). 48WH (cont’d.) 9.
Disassembly Removing the Hard Disk Drive Figure 5 Note that Models using a 48WH battery will not have a hard disk installed. HDD Assembly Removal The hard disk drive can be taken out to accommodate other 2.5" serial (SATA) hard disk drives with a height of 7.0mm (h).
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Disassembly 5. Remove screws and bracket from the hard disk (Figure 6d Figure 6 6. Reverse the process to install a new hard disk (do not forget to replace the screws). HDD Assembly Removal (cont’d.) d. Remove the screws and bracket from the HDD.
Disassembly Removing the System Memory (RAM) Figure 7 RAM Module The computer has two memory sockets for 260 pin Small Outline Dual In-line Memory Modules (SO-DIMM) supporting Removal DDR4 2400MHz. The main memory can be expanded up to 32GB. The total memory size is automatically detected by the POST routine once you turn on your computer.
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Disassembly 5. Pull the latches to release the second module if necessary. 6. Insert a new module holding it at about a 30° angle and fit the connectors firmly into the memory slot. 7. The module will only fit one way as defined by its pin alignment. Make sure the module is seated as far into the slot as it will go.
Disassembly Removing the Keyboard Figure 8 1. Turn off the computer, turn it over to remove the battery (page 2 - Keyboard Removal 2. Locate the release points from the open bottom case (Figure 8a). 3. Open it up with the LCD on a flat surface before pressing at point to release the keyboard module (use the spe- cific eject stick to do this) while releasing the keyboard in the direction of the arrow...
Disassembly Removing the Wireless LAN Module Figure 9 Wireless LAN 1. Turn off the computer, turn it over to remove the battery (page 2 - Module Removal 2. The Wireless LAN module will be visible at point on the mainboard (Figure 9a).
Disassembly Wireless LAN, and Combo Module Cables Note that the cables for connecting to the antennae on WLAN, WLAN & Bluetooth Combo modules are not labelled. The cables/covers (each cable will have either a black or transparent cable cover) are color coded for identification as outlined in the table below.
Disassembly Removing the 4G Module Figure 10 4G Module Removal 1. Turn off the computer, turn it over to remove the battery (page 2 - 2. The module will be visible at point on the mainboard (Figure 9a). a. Locate the WLAN. 3.
Disassembly Removing the M.2 SSD Module Figure 11 M.2 SSD Module 1. Turn off the computer, turn it over to remove the battery (page 2 - Removal 2. The M.2 SSD 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. Run your fingers around the inner frame of the LCD panel at the points as indicated by the arrows (Figure a.
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Disassembly 4. Disconnect the cable (Figure 13f). Figur 5. Remove the CCD module (Figure 13g). CCD Re 6. Reverse the process to install a new CCD module. (cont c. Disconnect d. Remove the ule. 6. CCD Modu Removing the CCD 2 - 19...
Appendix A: Part Lists This appendix breaks down the NL50MU / NL51MU / NL52MU series notebook’s construction into a series of illustra- tions. 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 page A - 6 page A - 7 A - 2...
Schematic Diagrams Appendix B: Schematic Diagrams This appendix has circuit diagrams of the NL50MU / NL51MU / NL52MU notebook’s PCB’s. The following table in- dicates where to find the appropriate schematic diagram. Diagram - Page Diagram - Page Diagram - Page...
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Schematic Diagrams System Block Diagram 5 IN 1 6-7P-NL4M5-002 NLx0MU Tiger LAKE UP3 System Block Diagram MAIN BOARD 6-71-NL4M0-D02 SHEET 2~38 LAN BOARD VDD3,VDD5 3200MHz 6-71-NL4MZ-D02 SHEET 39~42 DDIB DDR4 SHEET 30 DDR4 14" I/O BOARD SO-DIMM A SHEET 16 HDMI 1.4 SYSTEM SMBUS 6-71-NL4M1-D01...
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Schematic Diagrams Processor 5/12 STRAP PIN 0=>Disable “ No Reboot” mode. (Default ) 1.8VA Top Swap Override 1=>Enable “ No Reboot” mode (PCH will disable the TCO Timer LOW = Disable (Default) system reboot feature). This function is STP_A16OVR useful when running ITP/XDP. HIGH =Enable Top Swap mode R123 *4.7K_04...
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Schematic Diagrams Processor 6/12 STRAP PIN Flash Descriptor Security Overide 1.8V/3.3V:GPIO_A B C D E F H R T U Low = Enable security measures defined in the Flash Descriptor. (Default) 1.8V:GPIO_S High = Disable Flash Descriptor Security (override) 3.3V:GPD RB751S-40H R536 1K_04...
Schematic Diagrams LED KB, LED WHITE LED KEYBOARD RGB LED KEYBOARD RGBKB_PW R FOR 15" *HCB1608KF-121T30 KB_LED_PW R FOR 14" C497 C292 R360 R366 1K_04 SM3415KIDSH 4.7K_04 10u_6.3V_X5R_06 4.7u_6.3V_X5R_04 FOR 15" FOR 15" FOR 15" FOR 14" FOR 15" FOR 14" FON-KB R368 KB_LED_PW R...
Schematic Diagrams SATA HDD, TPM FOR 15" HDD RTD3 POWER FOR 15" HDD CON J_HDD1 SATA_TXP0 FOR 15" HDD_W /O_RTD3 C491 0.01u_16V_X7R_04 FOR 15" SATATXP0 [8] SATA_TXN0 C492 0.01u_16V_X7R_04 FOR 15" SATA_5VS SATATXN0 [8] SATA_5VS SATA_RXN0 C493 0.01u_16V_X7R_04 FOR 15" SATARXN0 SATA_RXP0 2.5A...
Schematic Diagrams KBC ITE IT5570 EC_ERST# R139 0_04 ESPI_RESET_N LPC(CML) E S P I ( T G L ) R150 75K_04 D02 modify [10,22,25,26,29] BUF_PLT_RST# R149 *62K_1%_04 VDD3 100K_04 LED_CAP# [21] VDD3 C198 C147 C197 C107 OPTION E X E C L E X E C L 10u_6.3V_X5R_06 0.1u_6.3V_X5R_02...
Schematic Diagrams M Key PCIE SSD NGFF_M (M2) SSD (PCIE 4X) 3.3VS D02 modify >120 mil R396 SATAGP2 SSD_3.3VS J_SSD1 L: SATA 100K_04 C320 C268 C271 22u_6.3V_X5R_06 H: PCIe GND13 0.1u_6.3V_X5R_02 0.1u_6.3V_X5R_02 GND12 3.3V8 S S D S A T A P i n p u l l h i g h FOR OPTANE SUPPORT...
Schematic Diagrams USB Type-A Sheet 28 of 47 USB Type-A USB3.1 Gen2 Port1 TYPE-A USBVCC_CH USB 3.1 PORT (CHARGER) VDD5 80 mil VOUT C395 Smart CDP 10u_6.3V_X5R_04 C398 pin8 pin4 Function 0.1u_6.3V_X5R_02 SY6288D20AAC DCP autodetect with USB_DD_ON# 2A/90mohm USB3.1 Max Trace length mouse/keyboard wake up SY6288D20AAC: 6-02-62882-9C0 Follow Design Guide...
Schematic Diagrams RTL8411B GIGA LAN (INTEL LAN I219) LAN i219 U_VDD3 The 10Kohm pull-up resistor of CLK_REQ_N is required to either 3.3V Suspend (5, 6, 7) or Core (2) rail, depending on the power well of PCH's input PCIECLKRQx# buffer. See Platform Design Guide for more details CLK_PCIE_C_GLAN LAN_BD_FOR_14"...
Schematic Diagrams Multi Board RTS5227S / OZ711 RTS5227S /SD OZ711 /SD SP7: internal pull-down 200k micro SD socke t , S D _ W P ( # 2 9 ) G N D U_VDD3 U_3V3AUX U_3V3AUX 40 mil U_SD_W P# ZUR10 *0201_short ZUR12...
*MTH7_0D2_3 3W R1 *0_02 6W R1 *0_02 MTH7_0D2_3 MTH7_0D2_3 15"_IO_BD 15"_IO_BD Title Title Title [44] NL50MU I/O BOARD_1_W [44] NL50MU I/O BOARD_1_W [44] NL50MU I/O BOARD_1_W <FUNCTION> <FUNCTION> 7W R1 *0_02 8W R1 *0_02 W GND W GND W GND...
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W _USB_PW R_EN# PCB Footprint = c147s3-10439-l-1 15"_IO_BD P/N = 6-21-B4920-004 USB2.0 PORT ONLY, Title Title Title [45] NL50MU I/O BOARD_2_W [45] NL50MU I/O BOARD_2_W [45] NL50MU I/O BOARD_2_W E M I Size Size Size Document Number Document Number Document Number...