Page 3
Preface Notebook Computer NB50TK1 / NB55TK1 Service Manual...
Page 4
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.
Page 5
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 NB50TK1 / NB55TK1 series notebook PC.
Page 6
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.
Page 7
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...
Page 8
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.
Page 9
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.
Page 10
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.
Specifications ..................1-2 HDD ....................A-7 External Locator - Top View with LCD Panel Open ......1-4 LCD (NB50TK1) ................A-8 External Locator - Front & Right Side Views .........1-5 LCD (NB55TK1) ................A-9 External Locator - Left Side & Rear View ........1-6 Schematic Diagrams.........
Page 12
Preface PCH 1/9 ..................B-25 Click Board ...................B-57 PCH 2/9 ..................B-26 Power Sequence ................B-58 Updating the FLASH ROM BIOS..C-1 PCH 3/9 ..................B-27 PCH 4/9 ..................B-28 Download the BIOS ................C-1 PCH 5/9 ..................B-29 Unzip the downloaded files to a bootable CD/DVD or PCH 6/9 ..................
Chapter 1: Introduction Overview This manual covers the information you need to service or upgrade the NB50TK1 / NB55TK1 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 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 Array Microphone 4. LCD 5. Power Button 6.
Introduction External Locator - Front & Right Side Views Figure 2 Front View 1. LED Indicator FRONT VIEW Figure 3 Right Side View 1. Multi-in-1 Card RIGHT SIDE VIEW Reader 2. Headphone-Out Jack 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. Mini Display Port 3. HDMI-Out Port LEFT SIDE VIEW 4. USB 3.1 Gen 2 Type-C Port 5. USB 3.1 Gen 2 Type-A Ports REAR VIEW Figure 5 Rear View...
Introduction Mainboard Overview - Top (Connectors) Figure 9 Mainboard Top Connectors 1. Mini Display Port 2. HDMI-Out Port 3. USB Port 3.1 (Type C) Connector 4. USB Port 3.1 (Type A) Connector 5. KB LED (White) Connector 6. Keyboard Cable Connector 7.
Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the NB50TK1 / NB55TK1 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.
Page 31
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.
Page 32
Disassembly Hard Disk Size Note (Foam Rubber Insert) Note that the hard disks pictured on these pages are all 9.5mm(H) hard disk drives. In some cases 7mm(H) hard disk drives will be installed. Figure 4 • If you are replacing a 9.5mm(H) Foam Rubber HDD with a 7mm(H) HDD then Insert for 7mm(H)
Disassembly Removing the Keyboard Figure 5 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 6 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...
Page 35
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 7d). Figure 7 6. Carefully (it may be hot) lift the CPU up out of the socket (Figure 7e).
Page 36
Disassembly Processor Installation Procedure Figure 8 Processor 1. Insert the CPU ; pay careful attention to the pin alignment (Figure 8a), it will fit only one way (DO NOT FORCE Installation IT!). 2. Move the bracket and latch fully in the direction indicated to lock the CPU. a.
Disassembly Removing the System Memory (RAM) Figure 9 RAM Module The computer has two memory sockets for 260 pin Small Outline Dual In-line Memory Modules (SO-DIMM) supporting Removal DDR4 2400 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 M.2 SSD Module Figure 10 M.2 SSD Module 1. Turn off the computer, turn it over, remove the battery (page 2 - Removal 2. The M.2 SSD module will be visible at point on the mainboard (Figure 10a).
Disassembly Removing the Wireless LAN Module Figure 11 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 11a).
Disassembly Wireless LAN, 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 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.
Page 42
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 NB50TK1 / NB55TK1 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 NB50TK1 NB55TK1 Location page A - 3 page A - 4 Bottom page A - 5...
Schematic Diagrams Appendix B: Schematic Diagrams This appendix has circuit diagrams of the NB50TK1 / NB55TK1 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 DDR4 CHA SO-DIMM Channel A SO-DIMM 0[RAM1] STD TYPE VDDQ VDDQ_VTT H=4.0mm J_DIMMA_1B J_DIMMA_1A 2.5V M_A_DQ[63:0] VDD19 VDD18 M_A_DQ1 M_A_CLK_DDR0 CK0_T VDD17 PLACE THE CAP WITHIN 200 MILS FROM THE SODIMM M_A_DQ4 M_A_CLK_DDR#0 CK0_C VDD16 VPP2 M_A_DQ3 M_A_CLK_DDR1 CK1_T VDD15 VPP1...
Schematic Diagrams Power SW Board B_3.3VS POWER SW BOARD POWER BUTTON 201712226 220_04 WHITE BJ_SW1 B_3.3VS BDGND *AVLC18S02015 BPWRBTN# RY-SP190DBW71-5A 6-52-57301-022 FP226H-004S10M Sheet 55 of 57 JXT_FP226H-004XXAM PN = 6-20-94A40-004 Power SW Board BDGND BDGND CLOSE TO BD3 B_3.3VS POWER FOR NB55 BOTTOM BSW1...
Download the BIOS computer model. 1. Go to www.clevo.com.tw and point to E-Services and click E-Channel. Note that BIOS versions 2. Use your user ID and password to access the appropriate download area (BIOS), and download the latest BIOS files...
BIOS Update Use the flash tools to update the BIOS 1. Make sure you are not loading any memory management programs such as HIMEM by holding the F8 key as you see the message “EFI Shell”. You will then be prompted to give “Y” or “N” responses to the programs being loaded by EFI Shell.