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Preface Notebook Computer P955ET1 / P955ET3 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 P955ET1 / P955ET3 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 130°...
Chapter 1: Introduction Overview This manual covers the information you need to service or upgrade the P955ET1 / P955ET3 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 Video Adapter Options i7-8750H (2.20GHz) Microsoft Hybrid Graphics Mode 9MB Smart Cache, 14nm, DDR4-2666MHz, TDP 45W Supports up to 4 Active Displays Supports NVIDIA Surround View via HDMI x 1 and MiniDP x2 Core Logic Latest Specification Information Intel Integrated GPU Intel®...
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Introduction Audio Interface Environmental Spec High Definition Audio Compliant Interface Three USB 3.0 (USB 3.1 Gen 1) Type-A Ports (Including one Temperature AC/DC Powered USB Port) ° ° S/PDIF Digital Output Operating: 5 C - 35 Two USB 3.1 Gen 2 Type-C Ports* Sound Blaster®...
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. Speakers 6.
Introduction External Locator - Front & Right Side Views Figure 2 Front View 1. LED Indicator FRONT VIEW Figure 3 Right Side View 1. Microphone-In Jack 2. Headphone & S/ PDIF Combo RIGHT SIDE VIEW Jack 3. USB 3.0 (USB 3.1 Gen 1) Ports 4.
Introduction External Locator - Left Side & Rear View Figure 4 Left Side View 1. Security Lock Slot 2. Vent 3. DC-In Jack LEFT SIDE VIEW 4. HDMI-Out Port 5. Mini DisplayPorts 6. USB 3.1 Gen 2 Type-C Ports 7. USB 3.0 (USB 3.1 Gen 1) Ports 8.
Introduction External Locator - Bottom View Figure 6 Bottom View 1. Vent 2. RJ-45 LAN Jack 3. USIM Card Reader (for 3G/ 4G USIM Cards) Overheating To prevent your com- puter from overhea- ting, make sure no- thing blocks any vent while the computer is in use.
Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the P955ET1 / P955ET3 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 Keyboard: To remove the 4G Module: 1. Remove the keyboard page 2 - 5 1.
Disassembly Removing the Keyboard Figure 1 Keyboard Removal 1. Turn off the computer, turn it over. 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 Battery Figure 2 Battery Removal 1. Turn the computer off, and remove the keyboard (page 2 - 2. Remove screws (Figure 2a). a. Remove the screws. 3. Remove the SD card cover and screws (Figure 2b). b. Remove the SD cover 4.
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Disassembly 5. The battery will be visible at point on the computer (Figure 3d Figure 3 6. Carefully disconnect the cable , then remove screws (Figure 3e Battery Removal 7. Lift the battery off the computer (Figure 3f (cont’d.) 8. Reverse the process to install a new battery (do not forget to replace all the screws and bottom cover). d.
Disassembly Removing the Hard Disk Drive Figure 4 HDD Assembly The hard disk drive can be taken out to accommodate other 2.5" serial (SATA) hard disk drives with a height of 7mm Removal (h). Follow your operating system’s installation instructions, and install all necessary drivers and utilities (as outlined in Chapter 4 of the User’s Manual) when setting up a new hard disk.
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Disassembly 4. Slightly slide and pull the hard disk out Figure 5 5. Lift the hard disk assembly out of the bay (Figure 5c HDD Assembly 6. Remove screws and bracket from the hard disk (Figure 5d Removal (cont’d.) 7. Reverse the process to install a new hard disk (do not forget to replace the screws). c.
Disassembly Removing the System Memory (RAM) Figure 6 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 2400 MHz. The main memory can be expanded up to 64GB. 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 7 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 (Figure 7a).
Disassembly Removing the Wireless LAN Module Figure 8 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 8a).
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 4G Module Figure 9 4G Module Removal Procedure 4G Module Removal 1. Turn off the computer, remove the battery (page 2 - a. Locate the module. 2. Locate the module, it is visible at point Figure 9a b.
Disassembly Removing the CCD Figure 10 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 130 degree angle. Carefully remove the a.
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Disassembly 5. Disconnect the cable (Figure 11c). Figure 11 6. Remove the CCD module (Figure 11d). 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 P955ET1 / P955ET3 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 Bottom page A - 4 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 P955ET1 / P955ET3 notebook’s PCB’s. The following table indicates where to find the appropriate schematic diagram. Diagram - Page Diagram - Page Diagram - Page Diagram - Page...
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Schematic Diagrams Processor 4/7 INTERNAL USE ONLY * ALL CFG 1 = NO TERMAINATION ON BOARD DEFAULT HIGH NEAR CPU * ALL CFG 0 = PHYSICAL STRAP LOW ON BOARD CFG 1.0V DESCRIPTION 1.05V_VCCST NORM STALL U172E NORM PCHLESS PCHLESS MODE NORM REVERSE PEG_LANE_REVERSAL -SEE PCIE CHAPTER...
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Schematic Diagrams Processor 5/7 CRB:6XBULK (SMC7343D), 12X0603 (22UF), 42X0402(10UF), 48X0201(1UF), 3X0805(47UF) P950HX:0XBULK (SMC7343D), 6X0603 (22UF), 12X0402(10UF), 24X0201(1UF), 1X0805(47UF) VCORE VCORE PLACE CAPS AT BOARD EDGE PLACE CAPS AT BACK VCORE VCORE VCORE VCORE U172I U172J AA13 AH13 CPU_TOP_VCCCORE CPU_BACK_VCCCORE VCC1 VCC64 AA31 AH14...
Schematic Diagrams Mini DP Port mini-Display Port F (back) mini-Display Port E (back) Zdiff=90 Close to Display PORT SHIELD6 GND4 SHIELD6 GND4 COMMON COMMON SHIELD5 GND3 SHIELD5 GND3 D_MDP_F#3 C940 0.1u_16V_X7R_04 MDP_F#3 D_MDP_F3 C942 0.1u_16V_X7R_04 MDP_F_PW R MDP_E_PW R MDP_F3 DP_TDB_AUX#_F DP_TDB_AUX#_E AUX_CHN...
Schematic Diagrams Frame Buffer Partition C_D FRAME BUFFER PARTITION C/D DECOUPLING P950 EP3 F r a m e P95xEP6,P95xER VRAM=K4G80325FB-HC25 Value:K4G80325FB-HC25 P950 EP6 F r a m e P95xEP3 VRAM=K4G41325FE-HC25 Value:K4G41325FE-HC25 FBVDDQ FBVDDQ DECOUPLING AROUND FBC MEMORIES (DQ0-DQ31) SPARE PLACE Under MEM C675 C175 C244...
Schematic Diagrams PCH 1/9 GPP_G_14_GSXDIN: CONSENT STRAP PESONALITY STRAP RESERVED DMI AC COUPLING FULL VOLTAGE MODE External pull-up is required. Recommend ENABLE:LOW IS ENABLED IF LOW 100K if pulled up to 3.3V or 75K if WHEN SAMPLED LOW (INTERNAL WEAK PU) PCH HAS NO INTERNAL pulled up to 1.8V.
Schematic Diagrams Backlight KB BACKLIGHT KEYBOARD R G B K / B FP226H-004S10M S E T , KB-SO16 KB-SO16 KB-SO17 TLC59116F RESET# pin pull high. KB-SO17 3.3VS KB-DET KB-DET KBZONE1_B J_KBLED_2 OUT0 KBZONE1_R C722 RGB K/B OUT1 KBZONE1_G MAIN OUT2 KBZONE2_B OUT3 KBZONE2_R...
Schematic Diagrams 1.8VA/1.05V_XX, NV3V3 NOTE: 1.05V_VCCST VCCSFR_OC NV3V3 NOTE: 1.0DX_VCCSTG TURN-ON need <65us I C P G D S U S B # 4 m S FA7609 TURN-ON TIME=60us VDDQ 3.3V 30mS C580 C555 1.05VA HW /SW G5016 C758 U177 0.1u_16V_X7R_04 10u_6.3V_X5R_06 HW /SW...
Schematic Diagrams VCore & VCCGT & VCCSA Coffee Lake H Line 3+1+1 1.05V_VCCST PC65 Freq. Vcore/GT=300kHz PR97 PR99 45.3_1%_04 0.1u_16V_X7R_04 Place close PWR_VCORE/VCCSA 100_04 Place close to pahse 1 L PWR_VCORE/VCCSA SVID PWR_VCORE/VCCSA to CPU NTC1 PR261 81215_SCLK 100k_1%_04_NTC PR249 49.9_1%_04 H_CPU_SVIDCLK PWR_VCORE/VCCSA...
Schematic Diagrams Power Sequence BIOS:E6, EC:E7 , ME FW: 11.6.20.1221 AC_IN 2018.01.11 BD.JO! IJ 278 / 8 3 n T VDD3 EC_SLP_SUS# Qpxfs! Po 9 7 7 v T 3.3VA 2/ 2 5 n T 1.8VA 3 / 3 n T 1.05VA 41/ 6 7 n T DD_ON...
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.