Clevo W355SSQ Service Manual
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Clevo W355SSQ Service Manual

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Summary of Contents for Clevo W355SSQ

  • Page 1 W355SSQ...
  • Page 3 Preface Notebook Computer W355SSQ 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 W355SSQ 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 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. VIII...
  • Page 11 Preface Contents Introduction ..........1-1 LCD ....................A-6 HDD ....................A-7 Overview ..................1-1 2nd HDD ..................A-8 System Specifications ..............1-2 Combo .................... A-9 External Locator - Front View with LCD Panel Open ....1-4 DVD ..................... A-10 External Locator - Front & Right side Views .........1-5 Schematic Diagrams.........

  • Page 12: Table Of Contents

    Preface Lynx 4/9 ..................B-26 W355SSQ VGA / WLAN SW Board ...........B-58 Lynx 5/9 ..................B-27 POWER SEQUENCE ..............B-59 Updating the FLASH ROM BIOS..C-1 Lynx 6/9 ..................B-28 Lynx 7/9 ..................B-29 Lynx 8/9 ..................B-30 Lynx 9/9 ..................B-31 Mini PCIE, Fan, Audio Con ............
  • Page 13 Chapter 1: Introduction Overview This manual covers the information you need to service or upgrade the W355SSQ series notebook computer. Information about operating the computer (e.g. getting started, and the Setup utility) is in the User’s Manual. Information about driv- ers (e.g.
  • Page 14 Introduction System Specifications Video Adapter Storage Processor Options Intel® Integrated GPU and NVIDIA® Discrete (Factory Option) One 12.7mm(h) Optical Device Intel® Core™ i7 Processor Type Drive (Super Multi Drive/Blu-Ray Combo i7-4910MQ (2.90GHz), i7-4900MQ (2.80GHz) Drive/Blu-Ray Writer Drive) Supports Microsoft Hybrid Graphics 8MB L3 Cache, 22nm, DDR3L-1600MHz, TDP (Factory Option) Two Changeable 2.5"...
  • Page 15 Introduction Communication Power Built-In Gigabit Ethernet LAN Full Range AC/DC Adapter 1.0M HD PC Camera Module AC Input: 100 - 240V, 50 - 60Hz DC Output: 19.5V, 6.15A (120W) (Factory Option) 2.0M FHD PC Camera Module 8 Cell Smart Lithium-Ion Battery Pack, 76.96WH (Factory Option) 3G Mini-Card Module Dimensions &...
  • Page 16 Introduction External Locator - Front View with LCD Panel Open Figure 1 Top View 1. Built-In PC Camera 2. *PC Camera LED *When the PC camera is in use, the LED will be illuminated in red. 3. LCD 4. Power Button 5.
  • Page 17 Introduction External Locator - Front & Right side Views Figure 2 Front Views 1. LED Indicators Figure 3 Right Side Views 1. Multi-in-1 Card Reader 2. USB 3.0 Ports 3. Combined eSATA/ USB 3.0 Port 4. HDMI-Out Port 5. RJ-45 LAN Jack External Locator - Front &...
  • Page 18 Introduction External Locator - Left Side & Rear View Figure 4 Left Side View 1. Security Lock Slot 2. USB 2.0 Port 3. S/PDIF-Out Jack 4. Microphone-In Jack 5. Headphone-Out Jack 6. Optical Device Drive 7. Emergency Eject Hole Figure 5 Rear View 1.
  • Page 19 Introduction External Locator - Bottom View Figure 6 Bottom View 1. Component Bay Cover 2. Vent 3. Battery 4. HDD Bay  Overheating To prevent your com- puter from overheating make sure nothing blocks the vent/fan in- takes while the com- puter is in use.
  • Page 20 Introduction Mainboard Overview - Top (Key Parts) Figure 7 Mainboard Top Key Parts 1. Memory Slots DDR3L So-DIMM 2. CMOS Battery 3. Mini-Card Connector (3G Module) 4. Mini-Card Connector (WLAN Module) 1 - 8 Mainboard Overview - Top (Key Parts)
  • Page 21 Introduction Mainboard Overview - Bottom (Key Parts) Figure 8 Mainboard Bottom Key Parts 1. PantherPoint Controller 2. CPU Socket 3. Memory Slots DDR3L So-DIMM 4. NV Graphic 5. KBC Mainboard Overview - Bottom (Key Parts) 1 - 9...
  • Page 22 Introduction Mainboard Overview - Top (Connectors) Figure 9 Mainboard Top Connectors 1. Audio Cable Connector 2. Power Switch Cable Connector 3. ODD Cable Connector 4. Keyboard Cable Connector 5. Click Board Cable Connector 6. VGA SW Cable Connector 7. Speaker Cable Connector 8.
  • Page 23 Introduction Mainboard Overview - Bottom (Connectors) Figure 10 Mainboard Bottom Connectors 1. HDD2 Connector 2. External Monitor Port 3. DC-In Jack 4. Fan Cable Connector 5. CCD Cable Connector 6. HDD1 Connector 7. Battery Connector 8. LCD Cable Connector Mainboard Overview - Bottom (Connectors) 1 - 11...
  • Page 24 Introduction 1 - 12...
  • Page 25 Chapter 2: Disassembly Overview This chapter provides step-by-step instructions for disassembling the W355SSQ 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.
  • Page 26 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 •...
  • Page 27 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 Warning 1. Don't drop it. Perform your repairs and/or upgrades on a stable surface. If the computer falls, the case and other Before you undertake components could be damaged.
  • Page 28 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 Optical Device: 1.
  • Page 29 Disassembly Removing the Battery Figure 1 Battery Removal If you are confident in undertaking upgrade procedures yourself, for safety reasons it is best to remove the battery. a. Slide the latch in the 1. Turn the computer off, and turn it over. direction of the arrow.
  • Page 30 Disassembly Removing the Optical (CD/DVD) Device Figure 2 Optical Device 1. Turn off the computer, and turn it over and remove the battery (page 2 - 5) and remove the component bay cover Removal (page 2 - 10). 2. Remove the screw , and use a screwdriver to carefully push out the optical device at point a.
  • Page 31 Disassembly Removing the Hard Disk Drive Figure 3 The hard disk drive is mounted in a removable case and can be taken out to accommodate other 2.5" SATA hard disk HDD Assembly drives with a height of 9.5mm or 7mm (h). Follow your operating system’s installation instructions, and install all nec- Removal essary drivers and utilities (as outlined in Chapter 4 of the User’s Manual) when setting up a new hard disk.
  • Page 32 Disassembly 5. Grip the tab and slide the hard disk in the direction of arrow (Figure 4e Figure 4 6. Lift the hard disk assembly out of the computer. HDD Assembly 7. Remove screws Removal (cont’d.) 8. Separate the hard disk and hard disk mylar 9.
  • Page 33 Disassembly Hard Disk Size Note (Foam Rubber Insert) Note that the hard disks pictured on the following pages are all 9.5mm(H) hard disk drives. In some cases 7mm(H) hard disk drives will be installed. Figure 5 Foam Rubber Insert for 7mm(H) HDDs HDD 1 HDD 2...
  • Page 34 Disassembly Removing the Hard Disk(s) in the Secondary HDD Bay Figure 6 1. Turn off the computer, and turn it over and remove the battery. Secondary HDD 2. Locate the component bay cover and remove screws and the cover. Assembly Removal 3.
  • Page 35 Disassembly Removing and Installing the Processor Figure 7 Processor Removal Processor Removal Procedure 1. Turn off the computer, and turn it over, remove the battery (page 2 - 5), and component bay cover (page 2 - 10). a. Locate the heat sink. 2.
  • Page 36 Disassembly 5. Turn the release latch towards the unlock symbol to release the CPU (Figure 8d). Figure 8 6. Carefully (it may be hot) lift the CPU up and out of the socket (Figure 8e). Processor Removal 7. Reverse the process to install a new CPU. (cont’d) 8.
  • Page 37 Disassembly Processor Installation Procedure Figure 9 Processor 1. Insert the CPU (Figure 9a), pay careful attention to the pin alignment, it will fit only one way (DO NOT FORCE Installation IT!), and turn the release latch towards the lock symbol (Figure 9b).
  • Page 38 Disassembly Removing the Keyboard Figure 10 Keyboard Removal 1. Turn off the computer, and turn it over and remove the battery (page 2 - 2. Turn the computer over, unsnap the speaker cover upward at point (Figure 10a). a. Turn computer 3.
  • Page 39 Disassembly 5. Carefully lift the keyboard up, being careful not to bend the keyboard ribbon cable and LED ribbon cable Figure 11 Keyboard Removal 6. Disconnect the keyboard ribbon cable and LED ribbon cable from their corresponding locking collar socket (Contd.) by using a flat-head screwdriver to pry the locking collar pins away from the base (Figure...
  • Page 40 Disassembly Removing the System Memory (RAM) Figure 12 RAM Module The computer has three memory sockets for 204 pin Small Outline Dual In-line (SO-DIMM) DDR3L type memory modules. Removal The total memory size is automatically detected by the POST routine once you turn on your computer. a.
  • Page 41 Disassembly Memory (under Keyboard) Upgrade Process Figure 13 RAM Module 5. Turn off the computer, turn it over and remove the battery (page 2 - 5), component bay cover (page 2 - 10) and (under keyboard) keyboard (page 2 - 14).
  • Page 42 Disassembly Removing the Hinge Cover Figure 14 Hinge Cover 1. Turn off the computer, turn it over and remove the battery (page 2 - 5), and component bay cover (page 2 - 10). Removal 2. Remove screws and use a screwdriver to carefully push out the hinge cover at point 3.
  • Page 43 Part Lists Appendix A: Part Lists This appendix breaks down the W355SSQ 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.
  • Page 44 Part Lists Part List Illustration Location The following table indicates where to find the appropriate part list illustration. Table A- 1 Part List Illustration Location Parts Top with Fingerprint page A - 3 Top without Fingerprint page A - 4 Bottom page A - 5 page A - 6...

  • Page 45: Top With Fingerprint

    Part Lists Top with Fingerprint Figure A - 1 Top with Fingerprint 灰色 Top with Fingerprint A - 3...

  • Page 46: Top Without Fingerprint

    Part Lists Top without Fingerprint Figure A - 2 Top without Fingerprint 灰色 A - 4 Top without Fingerprint...

  • Page 47: Bottom

    Part Lists Bottom Figure A - 3 Bottom Bottom A - 5...

  • Page 48: Lcd

    Part Lists Figure A - 4 非耐落 A - 6 LCD...

  • Page 49: Hdd

    Part Lists Figure A - 5 HDD A - 7...

  • Page 50: 2Nd Hdd

    Part Lists 2nd HDD Figure A - 6 2nd HDD A - 8 2nd HDD...

  • Page 51: Combo

    Part Lists Combo Figure A - 7 Combo Combo A - 9...

  • Page 52: Dvd

    Part Lists Figure A - 8 A - 10 DVD...
  • Page 53 Schematic Diagrams Appendix B: Schematic Diagrams This appendix has circuit diagrams of the W355SSQ notebook’s PCB’s. The following table indicates where to find the appropriate schematic diagram. Diagram - Page Diagram - Page Diagram - Page Table B - 1...

  • Page 54: W355Ssq Vga / Wlan Sw Board

    VGA / WLAN SW BOARD ELAN 6-49-W25A2-011 SHEET 46 6-71-W35S7-D01 SHEET 55 TOUCH PAD CLICK BOARD SHEET 32 FCBGA695 989 Ball W355SSQ TPM 2.0 SHEET 38 Optional POWER SWITCH BOARD 20x20mm SHEET 32 6-71-W355S-D01 SHEET 56 32.768 KHz Azalia Codec...
  • Page 55 Schematic Diagrams Haswell 1/7 Haswell rPGA Processor 1/7 ( DMI,PEG,FDI ) +VCCIOA_OUT U15A Haswell rPGA EDS PEG_IRCOMP CPU HOLD 24.9_1%_04 PEG_RCOMP PEG_RXN_0 PEG_RX#0 PEG_RX#1 DMI_TXN0 DMI_RXN_0 PEG_RXN_1 Sheet 2 of 58 PEG_RX#2 DMI_TXN1 DMI_RXN_1 PEG_RXN_2 H8_0D4_3 H8_0D4_3 H8_0D4_3 H8_0D4_3 PEG_RX#3 DMI_TXN2 DMI_RXN_2 PEG_RXN_3...
  • Page 56 Schematic Diagrams Haswell 2/7 Haswell Processor 2/7 ( CLK,MISC,JTAG ) 1.05V_LAN_M +VCCST Processor Pullups/Pull downs R294 *0_04 +VCCIO_OUT C489 C491 *22u_6.3V_X5R_08 *22u_6.3V_X5R_08 H_PROCHOT# 62_04 DDR3 Compensation Signals H_CPUPWRGD_R 10K_04 *0.1u_10V_X5R_04 SM_RCOMP_0 R174 100_1%_04 SM_RCOMP_1 U15B Haswell rPGA EDS R173 75_1%_04 TRACE WIDTH 10MIL, LENGTH <500MILS SKTOCC# AP32...
  • Page 57 Schematic Diagrams Haswell 3/7 6-86-27988-003 PZ98927-3641-01F 6-86-27988-001 47989-0732 6-86-27988-004 PZ98821-362B-01H 6-86-27988-003 PZ98927-3641-01F 6-86-27988-001 47989-0732 9,11 M_A_DQ[63:0] 6-86-27988-004 PZ98821-362B-01H M_B_DQ[63:0] Haswell rPGA EDS U15C Haswell rPGA EDS U15D M_A_DQ0 AR15 RSVD_AC7 M_A_DQ1 SA_DQ_0 RSVD_AC7 M_B_DQ0 RSVD_AG8 AT14 4.5/ 4.5/ 16 AR18 M_A_CLK_DDR#0 M_A_DQ2 SA_DQ_1...
  • Page 58 Schematic Diagrams Haswell 4/7 Haswell Processor 4/7 ( POWER ) V_VDDQ_DIMM 57W: 95A PROCESSOR CORE POWER 47W: 85A C757 C756 C770 ICCMAX Maximum Processor SV 48 +VCCIN Haswell rPGA EDS U15E 0.1u_10V_X7R_04 *100p_50V_NPO_04 0.1u_10V_X7R_04 AA26 AA28 +VCCIN AA34 EMI Require RSVD AA30 RSVD...
  • Page 59 Schematic Diagrams Haswell 5/7 Haswell Processor 5/7 ( GRAPHICS POWER ) 3.3VS *100K_1%_04 U15H Haswell rPGA EDS *100K_1%_04 DP_AUXN DP_AUXN DP_AUXN Sheet 6 of 58 DDIB_TXBN_0 EDP_AUXN DP_AUXP +VCCIOA_OUT 3.3VS DP_AUXP DP_AUXP DDIB_TXBP_0 EDP_AUXP DP_HPD DDIB_TXBN_1 EDP_HPD 24.9_1%_04 DDIB_TXBP_1 EDP_RCOMP EDP_UTIL *10K_1%_04 Haswell 5/7...
  • Page 60 Schematic Diagrams Haswell 6/7 Haswell Processor 6/7 ( GND ) Haswell rPGA EDS U15F Haswell rPGA EDS U15G AK34 AL10 AL11 AL12 AL14 AL15 AL17 AL18 AL20 AL21 AL23 AA11 AA25 AA27 AA31 AA29 AB10 AA33 AA35 AM10 Sheet 7 of 58 AM13 AC25 AM16...
  • Page 61 Schematic Diagrams Haswell 7/7 Haswell Processor 7/7 ( RESERVED ) CFG Straps for Processor PCI EXPRESS STATIC LANE REVERSAL FOR ALL PEG PORTS (Default) CFG2 1: (DEFAULT)NORMAL OPERATION; LANE# DEFINITION MATCHES 0: LANE REVERSAL U15I Haswell rPGA EDS CFG2 *1K_04 RSVD_TP RSVD_TP RSVD_TP...
  • Page 62 Schematic Diagrams DDR SO-DIMM A_0 SO-DIMM A_0 CHANGE TO STANDARD JDIMM1A 4,11 M_A_A[15:0] M_A_DQ[63:0] 4,11 M_A_A0 M_A_DQ0 JDIMM1B M_A_A1 M_A_DQ1 M_A_A2 M_A_DQ2 M_A_A3 M_A_DQ3 V_VDDQ_DIMM M_A_A4 M_A_DQ4 M_A_A5 M_A_DQ5 VDD1 VSS16 M_A_A6 M_A_DQ6 VDD2 VSS17 C316 *10p_50V_NPO_04 M_A_A7 M_A_DQ7 M_A_CLK_DDR0 M_A_CLK_DDR#0 M_A_A8 M_A_DQ8...
  • Page 63 Schematic Diagrams DDR SO-DIMM B_0 SO-DIMM B_0 CHANGE TO STANDARD JDIMM2B V_VDDQ_DIMM JDIMM2A M_B_A[15:0] M_B_DQ[63:0] M_B_A0 M_B_DQ0 M_B_A1 M_B_DQ1 VDD1 VSS16 M_B_A2 M_B_DQ2 C460 *10p_50V_NPO_04 VDD2 VSS17 M_B_CLK_DDR0 M_B_CLK_DDR#0 M_B_A3 M_B_DQ3 M_B_A4 M_B_DQ4 VDD3 VSS18 M_B_A5 M_B_DQ5 VDD4 VSS19 C462 *10p_50V_NPO_04 VDD5 VSS20 M_B_CLK_DDR1...
  • Page 64 Schematic Diagrams DDR SO-DIMM A_1 SO-DIMM A_1 CHANGE TO STANDARD JDIMM3A M_A_A[15:0] M_A_DQ[63:0] M_A_A0 M_A_DQ0 JDIMM3B M_A_A1 M_A_DQ1 M_A_A2 M_A_DQ2 M_A_A3 M_A_DQ3 V_VDDQ_DIMM M_A_A4 M_A_DQ4 M_A_A5 M_A_DQ5 VDD1 VSS16 M_A_A6 M_A_DQ6 VDD2 VSS17 M_A_A7 M_A_DQ7 M_A_A8 M_A_DQ8 VDD3 VSS18 Layout Note: VDD4 VSS19 M_A_A9...
  • Page 65 Schematic Diagrams PS8625 3.3VS 3.3VS HCB1005KF-121T20 HCB1005KF-121T20 BCIHP0420TB-2R2M HCB1005KF-121T20 3.3VS VDDIO 3.3VS VDDIOX SW_OUT VDD12 VDDRX R489 R502 C602 C601 C562 C566 10K_04 10K_04 C563 C590 0.47u_10V_Y5V_04 1u_6.3V_X5R_04 0.47u_10V_Y5V_04 4.7u_25V_X5R_08 4.7u_25V_X5R_08 1u_6.3V_X5R_04 PANEL_VCC_EN PANEL_VCC_EN ENBLT ENBLT PANEL_PWM PANEL_PWM C571 C573 1u_6.3V_X5R_04 2.2u_6.3V_X5R_04 >...
  • Page 66 Schematic Diagrams Panel, Inverter, CRT PANEL CONNECTOR PANEL POWER 3.3VS J_LCD1 TOP W370ET/W350ETQ 94V-0 R591 R589 & B UL 94V-0 panel J_LCD1 STUFF FOR EDP P_DDC_DATA LVDS-UCLKN P_DDC_CLK LVDS-UCLKP PLVDD LVDS-U2N 3.3VS PN:G5243A--6-02-05243-9C0 LVDS-U1N LVDS-U2P LVDS-U1P EDP_HPD_L R837 *1K_04 EDP_HPD 6,12 VOUT LVDS-U0N...
  • Page 67 Schematic Diagrams VGA PCI-E Interface Sheet 14 of 58 VGA PCI-E Interface VGA PCI-E Interface B - 15...
  • Page 68 Schematic Diagrams VGA Frame Buffer Interface Frame Buffer Interface Term Description The total trace length measured from GPU ball to capacitor is Under GPU no more than 150 mil The total trace length measured U17C from GPU ball to capacitor is no U17B Near GPU BGA_0908_P080_P085_P100_290X290...
  • Page 69 Schematic Diagrams VGA Frame Buffer A U31B INS284406750 BGA170 COMMON 15,17 FBA_CMD[31:0] FBA_CMD12 FBA_CMD15 FBA_CLK0 FBA_CMD5 FBA_CLK0# FBA_CMD0 FBA_D[31:0] FBA_CMD8 U31D U31A FBA_CMD10 A0_A10 INS284406670 INS284406830 FBA_CMD11 BGA170 BGA170 A1_A9 FBA_CMD2 COMMON COMMON A2_BA0 FBA_CMD1 NORMAL NORMAL A3_BA3 FBA_CMD3 A4_BA2 FBA_D0 FBA_D16 FBA_CMD4...
  • Page 70 Schematic Diagrams VGA Frame Buffer A U30B INS284412453 BGA170_MIRR COMMON 15,16 FBA_CMD[31:0] FBA_CMD28 FBA_CMD31 FBA_CLK1 FBA_CMD21 FBA_CLK1# FBA_CMD16 FBA_D[63:32] FBA_CMD24 U30D U30A INS284412315 INS284412235 FBA_CMD26 A0_A10 BGA170_MIRR BGA170_MIRR FBA_CMD27 COMMON COMMON A1_A9 FBA_CMD18 A2_BA0 MIRRORED MIRRORED FBA_CMD17 A3_BA3 FBA_CMD19 A4_BA2 FBA_D32 FBA_D48 FBA_CMD20...
  • Page 71 Schematic Diagrams VGA Frame Buffer B U14B INS284417806 BGA170 COMMON 15,19 FBB_CMD[31:0] FBB_CMD12 FBB_CMD15 FBB_CLK0 FBB_CMD5 FBB_CLK0# FBB_CMD0 FBB_D[31:0] FBB_CMD8 U14D U14A FBB_CMD10 A0_A10 INS284418019 INS284418467 FBB_CMD11 BGA170 BGA170 A1_A9 FBB_CMD2 COMMON COMMON A2_BA0 FBB_CMD1 NORMAL NORMAL A3_BA3 FBB_CMD3 A4_BA2 FBB_D0 FBB_D16 FBB_CMD4...
  • Page 72 Schematic Diagrams VGA Frame Buffer B U20B INS284424754 BGA170_MIRR COMMON 15,18 FBB_CMD[31:0] FBB_CMD28 FBB_CMD31 FBB_CLK1 FBB_CMD21 FBB_CLK1# FBB_CMD16 FBB_D[63:32] FBB_CMD24 U20A U20D INS284423878 FBB_CMD26 A0_A10 INS284423719 BGA170_MIRR FBB_CMD27 COMMON BGA170_MIRR A1_A9 FBB_CMD18 COMMON A2_BA0 MIRRORED FBB_CMD17 A3_BA3 MIRRORED FBB_CMD19 A4_BA2 FBB_D48 FBB_CMD20 DQ16...
  • Page 73 Schematic Diagrams VGA I/O U17M BGA_0908_P080_P085_P100_290X290 U17K U17L COMMON BGA_0908_P080_P085_P100_290X290 BGA_0908_P080_P085_P100_290X290 9/19 IFPEF R782 R783 COMMON COMMON N14x 1.0 7/19 IFPC 8/19 IFPD 1025 ALL PINS NC FOR GF117 N15x 2.0 ALL PINS NC FOR GF117 ALL PINS NC FOR GF117 DVI-DL DVI-SL/HDMI 3V3_RUN...
  • Page 74 Schematic Diagrams VGA NVVDD Decoupling U17H U17G U17I U17E BGA_0908_P080_P085_P100_290X290 BGA_0908_P080_P085_P100_290X290 NVVDD BGA_0908_P080_P085_P100_290X290 BGA_0908_P080_P085_P100_290X290 NVVDD COMMON COMMON COMMON COMMON 10/19 XVDD 16/19 GND_1/2 17/19 GND_2/2 14/19 NVVDD AM25 AA17 AA12 CONFIGURABLE AA18 AN10 AA14 POWER AA20 AN13 AA16 C113 C112 C111 C142 C218...
  • Page 75 Schematic Diagrams Lynx 1/9 Lynx Point - M (HDA,JTAG,SATA) RTCVCC BAT54CS3 VDD3 C305 1u_6.3V_X5R_04 RTC_VBAT_1 C319 R171 18p_50V_NPO_04 20K_1%_04 RTC_RST# R160 R197 PCH LYNX POINT SUPER SKU ES1 1K_04 C304 JOPEN1 U19A 1u_6.3V_X5R_04 *OPEN_10mil-1MM 10M_04 RTC CLEAR CM315D_32.768KHZ SATA_RXN0 RTC_X1 SATA_RXN_0 R427 C315...

  • Page 76: Lynx 5/9

    Schematic Diagrams Lynx 2/9 VDD3 NO REBOOT STRAP PCH_BT_EN# R418 10K_04 NO REBOOT STRAP: HDA_SPKR High Enable 3.3VS SMB_CLK R494 2.2K_04 SMB_DATA R493 2.2K_04 SERIRQ DRAMRST_CNTRL R150 10K_04 R189 1K_04 Lynx Point - M (LPC,SMBUS,SPI,C-LINK) SML0_CLK R474 2.2K_04 SML0_DATA R471 2.2K_04 iTPM ENABLE/DISABLE PCH_GPIO74...
  • Page 77 Schematic Diagrams Lynx 3/9 Lynx Point -M (DMI,FDI,PWRGD) PCH LYNX POINT SUPER SKU ES1 U19B AW22 DMI_RXN0 DMI_RXN_0 AR20 DMI_RXN1 DMI_RXN_1 AJ35 FDI_TXN0 FDI_RXN_0 AP17 DMI_RXN_2 DMI_RXN2 AV20 AL35 FDI_TXN1 DMI_RXN3 DMI_RXN_3 FDI_RXN_1 AY22 AJ36 FDI_TXP0 DMI_RXP0 DMI_RXP_0 FDI_RXP_0 AP20 DMI_RXP1 DMI_RXP_1 AL36...
  • Page 78 Schematic Diagrams Lynx 4/9 Lynx Point -M (CRT,LVDS,PCI,DISPLAY) DAC_BLUE R368 150_1%_04 DAC_GREEN R369 150_1%_04 DAC_RED R370 150_1%_04 U19E PCH LYNX POINT SUPER SKU ES1 DAC_BLUE DAC_BLUE VGA_BLUE DDPB_CTRLCLK DAC_GREEN DAC_GREEN VGA_GREEN DDPB_CTRLDATA DAC_RED DAC_RED VGA_RED DDPC_CTRLCLK DAC_DDCACLK VGA_DDC_CLK DDPC_CTRLDATA Ver:1.0 HDMI_CTRLCLK DAC_DDCADATA HDMI_CTRLCLK...
  • Page 79 Schematic Diagrams Lynx 5/9 Lynx Point - M (GPIO,CPU/MISC,NCTF) VDD3 HOST_ALERT#1 R475 10K_04 PCH_GPIO8 R452 10K_04 PLL_ODVR_EN R514 *10K_04 R515 *1K_04 U19F PCH LYNX POINT SUPER SKU ES1 S_GPIO S_GPIO_R PLL_ODVR_EN:HIGH- ENABLED[DEFAULT] R155 100_04 BMBUSY#/GPIO0 LOW - DISABLED SMI# SMI# TACH1/GPIO1 DGPU_HPD_INTR# TACH2/GPIO6...
  • Page 80 Schematic Diagrams Lynx 6/9 Lynx Point -M (PCIe,USB) PCI-E x1 Usage USB2.0 PORT USB2.0 7 PORT USB3.0 Lane 1 U19I PCH LYNX POINT SUPER SKU ES1 Lane 2 AW31 USB3_RX3_N USB_PN0 Lane 3 WLAN PERN1/USB3RN3 USB2N0 AY31 USB 3.0 PORT0 USB3_RX3_P USB_PP0 PERP1/USB3RP3...

  • Page 81: Lynx 7/9

    Schematic Diagrams Lynx 7/9 0.1A Lynx Point -M (POWER) VCCA_DAC_1_2 1.5VS HCB1608KF-121T25 1.5A C528 C524 C516 PCH LYNX POINT SUPER SKU ES1 U19G 0.1u_10V_X5R_04 1u_6.3V_X5R_04 10u_6.3V_X5R_06 1.05VS VCCADAC1_5 AA24 AA26 CRT DAC 0.02A AD20 V3.3S_ADACBG C189 C280 C265 C273 *15mil_short_06 3.3VS 0.2A VCCADACBG3_3...

  • Page 82: Lynx 8/9

    Schematic Diagrams Lynx 8/9 Lynx Point - M (POWER) VDD3 CougarPoint power supply range 0.3A PCH LYNX POINT SUPER SKU ES1 HCB1608KF-121T25 U19H C278 C268 Voltage VDD3 VDD3 1.5A *HCB1608KF-121T25 *0.1u_10V_X5R_04 *0.1u_10V_X5R_04 1.00V 1.05V 1.10V 3.3V 3.3V R117 *15mil_short_06 1.43V 1.5V 1.58V 1.5A...
  • Page 83 Schematic Diagrams Lynx 9/9 Lynx Point -M (GND) Lynx Point -M (CLK) U19K PCH LYNX POINT SUPER SKU ES1 AA16 AA20 PCH LYNX POINT SUPER SKU ES1 AA22 U19C AA28 AB12 CK_PCH_SRC0_N AB35 VGA_PEXCLK# CLKOUT_PCIE_N_0 CLKOUT_PEG_A AB34 CK_PCH_SRC0_P AB38 BA40 AB36 100MHz VGA_PEXCLK...

  • Page 84: Mini Pcie, Fan, Audio Con

    Schematic Diagrams Mini PCIE, Fan, Audio Con MSATA MINI CARD mSATA POWER UIM_PWR UIM_DATA R597 4.7K_04 SIM CONN MSATA function C572 *0.1u_16V_Y5V_04 D02 DEL 3G FUNCTION MSATA function R832 R833 J_SIM1 3G_3.3V J_3G1 60mils (TOP VIEW) R595 3G_3.3V WAKE# 3.3VAUX_0 R832 *0_06 *10mil_short...

  • Page 85: Usb Charge, Ccd, Tpm, Multi-Con

    Schematic Diagrams USB Charge, CCD, TPM, Multi-Con W370ET W350ETQ 94V-0 USB Charge PORT VDD5 & B UL 94V-0 panel R250 5V_CCD TPS2540A *10K_04 VDD5 48 mil TPS254X_ILIM_SEL VOUT USBVCC01 C332 100 mil 100 mil R697 C569 *10u_10V_Y5V_08 R217 C340 C334 *100K_04 USB_PN1 *0_04...

  • Page 86: Esata/Usb3.0 Connector

    Schematic Diagrams ESATA/USB3.0 Connector USB POWER SWITCH USB2.0 PORT(PORT2) 3.3V USB3.0 PORT(PORT3) R430 M-MSOP8 USBVCC3.0_3 *10K_04 50 MIL R501 *0_04 27,33 USB_OC#23 FLG# VOUT1 C763 *22u_6.3V_X5R_08 C568 C567 VIN1 VOUT2 100 MIL C603 *22u_6.3V_X5R_08 0.1u_16V_Y5V_04 *0.1u_16V_Y5V_04 VIN2 VOUT3 C604 0.1u_16V_Y5V_04 USBVCC3.0_3 C376 C559...

  • Page 87: Card Reader / Lan Rtl8411B

    Schematic Diagrams Card Reader / LAN RTL8411B LAN (RTL8411) 4 IN 1 SOCKET SD/MMC/MS/MS Pro J_CARD_NOR1 MS_BS/SD_WP# SD_WP XTAL2 SD_GND SD_CD# SD_C/D SD_D1 R654 1M_04 XTAL1 SD_DATA1 SD_D0/MS_D1 SD_DATA0 FSX5L_25MHZ SD_VSS2 MS_VSS2 MS_BS/SD_WP# MS_BS RSET R815 2.49K_1%_04 Switching Regulator close to PIN48 SD_CLK/MS_D0 SD_CLK SD_D0/MS_D1...

  • Page 88: Sata Hdd, Vled Con, Lid Sw

    Schematic Diagrams SATA HDD, VLED CON, LID SW HDD CONNECT1 (MASTER) HDD CONNECT2 (SLAVE) J_HDD1 Gen3 J_HDD2 Gen3 C472 0.01u_16V_X7R_04 SATA_TXP0 C471 0.01u_16V_X7R_04 0.01u_16V_X7R_04 SATA_TXN0 SATA_TXP1 0.01u_16V_X7R_04 SATA_TXN1 C470 0.01u_16V_X7R_04 SATA_RXN0 C469 0.01u_16V_X7R_04 0.01u_16V_X7R_04 SATA_RXP0 SATA_RXN1 0.01u_16V_X7R_04 SATA_RXP1 3.3VS 3.3VS *0.01u_16V_X7R_04 *10u_10V_Y5V_08 CO-LAY...

  • Page 89: Hdmi, Rj45

    Schematic Diagrams HDMI, RJ45 GIGA LAN (RTL8411) HDMI CONNECTOR ( W/ HDMI Repeater) LAN POART HDMI_5VS FLG# VOUT1 J_RJ_1 LAN_MDIP0 LMX1+ *WCM2012F2S-161T03-short DLMX1+ GND1 VIN1 VOUT2 LAN_MDIP0 TD4+ MX4+ shield LAN_MDIN0 LMX1- DLMX1- GND2 LAN_MDIN0 TD4- MX4- shield LAN_MDIP1 C781 C782 LMX2+ DLMX2+...

  • Page 90: Audio Codec Vt1802S

    Schematic Diagrams Audio Codec VT1802S VT1802PCE & VT1802S Co-lay CODEC (VT1802S) VT1802S Mount: R119,R239,R668,R691,R690,R261 Remove: R689,R238,R692,R693,R694 VT1802PCE PVDD1_2 R499 *15mil_short_06 Mount: R689,R238,R692,R693,R694 3.3VS_AUD Remove: R119,R239,R668,R691,R690,R261 C352 C350 *HCB1005KF-121T20 0.1u_16V_Y5V_04 10u_6.3V_X5R_06 3.3V C608 C606 HCB1005KF-121T20 10u_6.3V_X5R_06 0.1u_16V_Y5V_04 3.3VS C381 C353 C577 VT1802P L50,C317 ALC269...

  • Page 91: Audio Amp & Con

    Schematic Diagrams Audio AMP & Con HeadPhone HP_VDD FCM1005KF-121T03 HEADPHONE-L HEADPHONE-L 31,38 HP_VDD R757 0_04 VOUT C804 R763 *0_04 C802 C803 C805 C816 HP_AMP_SGND C848 R758 *0_04 0.1u_16V_Y5V_04 2.2u_6.3V_X5R_04 22u_6.3V_X5R_08 22u_6.3V_X5R_08 0.1u_16V_Y5V_04 EEFCX0J221YR *G5243A *BAV99 *V15AVLC0402 R764 *0_04 1216 HP_AMP_SGND R759 0_04 HP_AMP_SGND...

  • Page 92: Kbc Ite It8587

    Schematic Diagrams KBC ITE IT8587 KBC_AVDD GPH4 R809 *0_04 HSPI_SCLK 23,39 HCB1005KF-121T20 R810 0_04 VDD3 d_GPIO9_ALERT_FAN 20,25 GPH5 R811 *0_04 HSPI_MSO 23,39 VDD3 C682 C663 C665 C667 C646 R812 0_04 dGPU_GPIO8_OVERT 20,26 C638 C642 C639 6-20-94AF0-124 GPH6 R813 *0_04 HSPI_MSI 23,39 0.1u_16V_Y5V_04 10u_10V_Y5V_08...

  • Page 93: 5Vs, 3.3V, 3Vs, 3.3Vm

    Schematic Diagrams 5V, 5VS, 3.3V, 3VS, 3.3VM DD_ON# SUSB 3.3V 3.3VS VDD3 VDD3 C483 NMOS NMOS PR59 PR61 PQ17A PQ16A SYS15V VDD3 MTNN20N03Q8 3.3V SYS15V MTNN20N03Q8 3.3VS 10K_04 100K_04 VDD3 DD_ON# 32,33,42 SUSB 3,36,40,42,43 Power Plane PQ18B PR55 PR53 PC51 PC187 PC58 PC52...

  • Page 94: Vdd3/Vdd5

    Schematic Diagrams VDD3, VDD5 VREF VDD3/VDD5 PR195 *0_04 PR194 *20mil_04 PC167 1u_6.3V_X5R_04 PR192 PR197 EN_3V EN_5V PC165 100K_04 100K_04 PC166 1000p_50V_X7R_04 1000p_50V_X7R_04 VREG3 0227 PC176 PC173 PC164 VDD5 PR191 *10K_04 4.7u_25V_X5R_08 4.7u_25V_X5R_08 1u_6.3V_X5R_04 Z3608 C739 VDD3 LDO3 SYS5V PC179 PC178 PC172 C419 PC163...

  • Page 95: Or 1.35V / 0.75Vs, 1.5Vs

    Schematic Diagrams 1.5V or 1.35V / 0.75VS, 1.5VS 1.5V or 1.35V/0.75VS PD20 PQ13 1.5V or 1.35V MDU1516 PC49 PC48 PC50 PC47 PC94 PC80 ULTRASO-8 IMAX:23A RB0540S2 G5616 VDDQ_VTT PC170 Z3709 OCP:25A VDDQ 10u_10V_Y5V_08 PC171 0.1u_10V_X5R_04 Short VLDOIN VBST PR50 Z3701 Z3710 Z3718 Short...

  • Page 96: Vs,1.05V_M,1.05V_Lan_M

    Schematic Diagrams 1.05VS, 1.05V_M, 1.05V_LAN_M For CV test PJ15 *CV-40mil PR137 100K_04 Z3501 PR138 820K_1%_06 VDD3 PJ14 *OPEN-1mm PC126 PC124 PC123 PC125 1.05V_LAN_M_EN 1.05V_LAN_M_EN 24,40 PM_SLP_LAN# PJ13 *OPEN-1mm PQ38 PR142 PC129 MDS1526URH 24,39,40 SUSB# 0_06 0.1u_10V_X7R_04 VTT_SELECT VTT VR Output Voltages Short PC122 EN_PSV...

  • Page 97: Power V-Core

    Schematic Diagrams Power V-Core 3.3VS 3.3VS PR114 *20mil_04 PR43 PR46 *10K_04 100K_04 DELAY_PWRGD *CV-40mil PR45 100K_04 VR_EN 100K_1%_NTC_06 150K_1%_06 SWN3 13,24,39 ALL_SYS_PWRGD PUT COLSE TO VCORE PC201 PR11 PR10 150K_1%_06 SWN1 Phase 1 0.1u_10V_X7R_04 PR144 165K_1%_04 Inductor 75K_1%_04 PC14 PC10 PC12 PC32 PC19...

  • Page 98: Vga Nvvdd, Pex_Vdd

    Schematic Diagrams VGA NVVDD, PEX_VDD VGA__NVVDD 3.3VS 3.3VS 20,39 GPIO6_VBOOT_ADJ PJ12 PR128 *5mm PR135 3.3VS 1216 PR125 *1K_04 PR25 *0_04 *1K_04 UP1462_REFIN 0_04 PR131 0_04 PR35 *1.05K_1%_04 NVVDD_PSI 20,45,46 3V3_MAIN_EN GPU_PWR_VID PR136 PC118 10K_04 PQ11 UP1462_VREF PR134 *2SK3018S3 *47p_50V_NPO_04 UP1462_FBDRTN PR19 PR28 *10K_04...

  • Page 99: Fbvddq

    Schematic Diagrams FBVDDQ 1112 GC6 2.0 PR506 *0_04 20,45 3V3_MAIN_EN PR242 100K_04 PR240 820K_1%_06 3.3V 1216 N15x PC203 PC202 PC204 PC205 PC207 FOR GDDR3 1.35VS PR510 0_04 3.3V PR486 *0.01u_16V_X7R_04 PU10 14,26,45 GPU_PWROK 0_04 1.35VS PR489 *0_04 20,45 1642_DGPU_ON PR509 *0_04 PR147 PC210...

  • Page 100: Ac-In, Charger

    Schematic Diagrams AC-In, Charger Z4110 PR228 *20mil_04 SMART CHARGER PQ73 ME4425 PR229 470K_04 PQ70 ME4425 V_BAT V_BAT ME4425 VJACK PR115 20K_04 PL17 6-15-32023-7B0 1216 Z4103 JBATTA2 J_DC-JACK1 PL18 PQ35 PQ71A 2DC-G213-B49 ME4425 EMB17A03V Z4101 PR130 PL15 PR233 0.01_1%_32 8.2UH_6.8*7.3*3 0.01_1%_32 PC110 PC115 PC131...

  • Page 101: W370Ss/W350Ssq Audio Board

    Schematic Diagrams W370SS/W350SSQ Audio Board USB PORT(PORT9) A_5V A_USBVCC2 A_USBVCC 60 mil *10K_04 AC16 M-MSOP8 AC17 AC12 AC15 0.1u_10V_X7R_04 A_USBVCC 22u_6.3V_X5R_08 220u_6.3V_6.3*6.3*4.2 60 mil *22u_6.3V_X5R_08 6-11-22711-AB7 AJ_USB1 FLG# VOUT1 6-11-22711-0B0 60 mil 6-11-22711-AB8 VIN1 VOUT2 AC14 AC13 AGND AUSB_PN9_R DATA_L AC11 VIN2 VOUT3...

  • Page 102: W370Ss/W35Xssq Powerled Board

    Schematic Diagrams W370SS/W35XSSQ Power LED Board W370SS/W35xSSQ POWERLED BOARD L3.3VS L3.3VS L3.3VS Sheet 49 of 58 220_04 220_04 220_04 W370SS/W35XSSQ Green Yellow Green Yellow Green Yellow NUM LOCK CAPS LOCK SCROLL LOCK LED RY-SP170YG34-5M RY-SP170YG34-5M Power LED Board RY-SP170YG34-5M 6-52-52001-027 L_LED_NUM# L_LED_CAP# L_LED_SCROLL#...
  • Page 103 Schematic Diagrams W370SS/W35XSSQ Click Board W370SS/W355SSQ TC12 0.1u_16V_Y5V_04 W35xSSQ & W370SS CLICK BOARD T3.3VS T+5VS T+5VS RIGHT LIFT TGND CSW1~2 TJ_TP1 TCR1 *32mil_short TCSW2 TCSW1 TJ_TPB1 TGTP_CLK T4BJB10-Q-T/R T4BJB10-Q-T/R TGTP_DATA CTPBUTTON_R CTPBUTTON_L CTPBUTTON_L TGTP_CLK CTPBUTTON_R TGTP_DATA *10mil_short 85201-06051 TC13 6-21-91A00-106...
  • Page 104 Schematic Diagrams W370SS Power Switch Board W370SS POWER SWITCH BOARD BH_3.3VS BVDD3 BH_3.3VS BVDD3 BVDD3 BVDD3 BVDD3 BJ_SW 1 680_06 BPW RBTN# POWER BUTTON BW EB#0 BW EB#1 *BAV99 *BAV99 *BAV99 *BAV99 BW EB#2 BPW RBTN# BW EB#0 BW EB#1 BW EB#2 WHITE Sheet 51 of 58...

  • Page 105: W350Ssq Power Switch Board

    Schematic Diagrams W350SSQ Power Switch Board W350SSQ POWER SWITCH BOARD B5PB_3.3VS B5PVDD3 B5PVDD3B5PB_3.3VS B5PD5 B5PR1 B5PJ_SW 1 680_06 *BAV99 POWER B5PPW RBTN# BUTTON POWER B5PPW RBTN# B5PSW 1 BOTTOM B5PPW RBTN# B5PC1 WHITE SFNQRMP2125T 0.01u_50V_X7R_04 B5PGND PIN5,6=B5PGND B5PD1 88486-0801 Sheet 52 of 58 RY-SP150DBW 71-5A B5PGND M100126...

  • Page 106: W370Ss Lid / Vga Led Board

    Schematic Diagrams W370SS LID / VGA LED Board W370SS LID & VGA LED SW BOARD VGA SWITCH & LED HDD LED BT&WLAN LED BL_3.3VS BL_3.3VS BL_3.3VS BLR3 BLR1 BLR2 220_04 220_04 220_04 BLQ29 BLR472 *QM3009K WHITE Yellow/Green *220_04 BLD2 HDD/CD-ROM BLD1 add WLAN_LED# BLR200...

  • Page 107: W35Xssq Lid / Vga Led Board

    Schematic Diagrams W35XSSQ LID / VGA LED Board W35xSSQ LID & VGA LED BOARD HDD LED BT&WLAN LED VGA LED V5L_3.3VS V5L_3.3VS V5L_3.3VS V5L_3.3VS V5LR3 V5LR1 V5LR2 470_04 220_04 220_04 V5LR4 V5LR5 220_04 220_04 WHITE Yellow/Green Sheet 54 of 58 V5LD2 HDD/CD-ROM V5LD1...

  • Page 108: W350Ssq Vga / Wlan Sw Board

    Schematic Diagrams W350SSQ VGA / WLAN SW Board W350SSQ VGA & WWW SW BOARD VGA SWITCH & LED B5_VDD3 B5_3.3VS B5D1 *BAV99 B5W EB#0 B5Q1 *QM3009K Sheet 55 of 58 B5R1 B5R200 W350SSQ VGA / *470_04 *470_04 Yellow/Green B5GND WLAN SW Board B5L1 *RY-SP195UHYUYG4 B5_W LANSW 1...

  • Page 109: W355Ssq Power Switch Board

    [56] W355SSQ POWER SWITCH BOARD Size Size Size Document Number Document Number Document Number 6-71-W355S-D01 6-71-W355S-D01 6-71-W355S-D01 Date: Date: Date: Friday, January 10, 2014 Friday, January 10, 2014 Friday, January 10, 2014 Sheet Sheet Sheet W355SSQ Power Switch Board B - 57...
  • Page 110 [57] W355SSQ VGA/WLAN SW BOARD Size Size Size Document Number Document Number Document Number 6-71-W355S-D12 6-71-W355S-D12 6-71-W355S-D12 Date: Date: Date: Friday, January 10, 2014 Friday, January 10, 2014 Friday, January 10, 2014 Sheet Sheet Sheet B - 58 W355SSQ VGA / WLAN SW Board...
  • Page 111 Schematic Diagrams POWER SEQUENCE Sheet 58 of 58 POWER SEQUENCE POWER SEQUENCE B - 59...
  • Page 112 Schematic Diagrams B - 60...
  • Page 113 Download the BIOS Note that BIOS versions 1. Go to www.clevo.com.tw and point to E-Services and click E-Channel. are not backward com- 2. Use your user ID and password to access the appropriate download area (BIOS), and download the latest BIOS files...
  • Page 114 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 “Starting MS-DOS”. You will then be prompted to give “Y” or “N” responses to the programs being loaded by DOS.

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