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Preface Notebook Computer NP50HP / NP55HP-HM 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 NP50HP / NP55HP-HM 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 NP50HP / NP55HP-HM series notebook com- puter. Information about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual. In- formation about dri-vers (e.g.
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. 3. Built-In Array 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. Speaker 2. MicroSD Card Reader 3. USB 3.2 Gen 2 RIGHT SIDE VIEW Type-C Port 4. RJ-45 LAN Jack 5.
Introduction External Locator - Left Side & Rear View Figure 4 Left Side View 1. Security Lock Slot 2. Vent 3. USB 3.2 Gen 1 LEFT SIDE VIEW Type-A Ports 4. USB 2.0 Port 5. Microphone-In Jack 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. Mini Display Port 3. HDMI Port 4. Keyboard Cable Connector 5. LED KB Connector 6. MicroSD Card Reader 7. USB 3.2 Gen 2 Type-C Port 8.
Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the NP50HP / NP55HP-HM 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 re- moval 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: 1. Remove the battery page 2 - 5 To remove the Keyboard: 1.
Disassembly Removing the Battery Figure 1 Battery Removal 1. Turn off the computer, turn it over. 2. Remove screws (Figure 1a). a. Remove the screws. 3. Carefully lift the bottom case up in the direction of the arrow at point and remove it (Figure 1b b.
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Disassembly 4. The battery will be visible at point on the computer (Figure 2d Figure 2 5. Carefully disconnect the cable , then remove screws (Figure 2e Battery Removal 6. Lift the battery off the computer (Figure 2f (cont’d.) 7. Reverse the process to install a new battery (do not forget to replace all the screws and bottom cover). d.
Disassembly Removing the Keyboard Figure 1 Keyboard Removal 1. Turn off the computer, turn it over, remove the battery (page 2 - 2. Remove screws from the bottom of the computer. a. Remove the screws from 3. Open it up with the LCD on a flat surface before pressing at point to release the keyboard module (use the spe- the bottom of the compu- cial eject stick...
Disassembly Removing the M.2 SSD Module Figure 2 M.2 SSD-1 Module M.2 SSD-1 Removal Procedure Removal 1. Turn off the computer, turn it over, remove the battery (page 2 - 2. The M.2 SSD module will be visible at point on the mainboard.
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Disassembly M.2 SSD-2 Removal Procedure Figure 3 1. Turn off the computer, turn it over, remove the battery (page 2 - M.2 SSD-2 Module 2. The M.2 SSD module will be visible at point on the mainboard. Remove the screw (Figure 3a).
Disassembly Removing the System Memory (RAM) Figure 4 RAM Module The computer has four memory sockets for 260 pin Small Outline Dual In-line Memory Modules (SO-DIMM) support- Removal ing DDR4 Up to 3200 MHz. 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.
Disassembly Removing the Wireless LAN Module Figure 5 Wireless LAN 1. Turn off the computer, turn it over, remove the battery (page 2 - Module Removal 2. The Wireless LAN module will be visible at point on the mainboard (Figure 5a).
Disassembly Wireless LAN, Combo 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.
Appendix A:Part Lists This appendix breaks down the NP50HP / NP55HP-HM 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 NP50HP NP55HP-HM Location page A - 3 page A - 4 page A - 5 Bottom...
Schematic Diagrams Appendix B: Schematic Diagrams This appendix has circuit diagrams of the NP50HP / NP55HP-HM 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 LAN RTL8111H LAN (RTL8111H LDO MODE ONLY) PCH GPI0 4/20/2018 R344 2.49K_1%_04 GPIO_RTD3 AVDD33 Rising time 3.3V_AUX (10%~90%) LAN_LED0 T111 >0.5mS and <100mS. LAN_LED1/GPO T110 LAN_LED2 T112 FOR AC S5 WAKE UP ON LAN GPIO_LAN_PLT_RST# R772 10K_04 LAN_AVDD33 E_PAD (W>60mil PCIE_WAKE#...
Schematic Diagrams Card Reader MULTI I/O BOARD RTS5227S/ OZ711LV2 NOTE2: SP7 : Internal pull-down 200K RTD3 confirm If use microSD socket, 1.IF RTD3-COLD IS NEEDED TO BE SUPPORTED, WAKE# MUST BE SD_WP#(#29) can't floating, PULLED-UP TO +3.3V_AUX ON THE MB. DURING D3 COLD, WAKE# must connect to CND WILL BE ASSERTED AT THE EVENT OF SD CARD INSERTION OR REMOVAL.
Schematic Diagrams NVVDD1 EC_GPIO 28,52,58,66 EN Type VDD3 1V8_AON NV3V3 1N914BWS Open Drain R11(PTC) close to hot area you concern Push Pull PR277 PR278 PR79 DEL SMBUS, I2C *10K_1%_04 10K_1%_04 *10K_1%_04 D02, del duplicate PH 1V8_AON PR274 0_04 25,28,66 I2CC_SDA_PP PNTC1 Mode EW TF02-104F4F-N...
Schematic Diagrams FBVDDQ FBVDDQ EC_GPIO 28,52,58,63 3.3VS to VDD3 1N914BWS 1V8_AON NV3V3 VDD3 VDD3 EN Type R11(PTC) close to hot area you concern Open Drain PR18 PR12 Push Pull PR22 1V8_AON *10K_04 *10K_04 *10K_1%_04 *10K_1%_04 PR200 PR19 Mode DEL I2C 10K_1%_04 *10K_04 FBVDDQ=1.25V/1.35V...
Schematic Diagrams LED Board 1LR1 *0_02 4LR1 *0_02 6-71-NP5H4-D01 2LR1 *0_02 5LR1 *0_02 3LR1 *0_02 6LR1 *0_02 7LR1 *0_02 8LR1 *0_02 LED BOARD LED BOARD LED BOARD LED BOARD LED BOARD LED BOARD LED BOARD LED BOARD 6-52-55001-021 Angus 0302 GREEN YELLOW HDD LED 750_1%_04...
Schematic Diagrams Power SW Board 1BR1 *0_02 4BR1 *0_02 6-71-NP5HS-D01 2BR1 *0_02 5BR1 *0_02 POWER SW BOARD 3BR1 *0_02 6BR1 *0_02 7BR1 *0_02 8BR1 *0_02 POWER BOARD POWER BOARD POWER BOARD POWER BOARD POWER BOARD POWER BOARD POWER BOARD POWER BOARD Sheet 68 of 69 Power SW Board POWER...