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Compal JHT01 Service Manual

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Summary of Contents for Compal JHT01

  • Page 1 Service Manual JHT01...

  • Page 3: Chapter 1 System Description Specification

    Chapter 1 System Description Specification...

  • Page 5: Table Of Contents

    Contents Chapter 1 System Description Specification 1. SCOPE ....................1-2 One 2.5” W, 9.5mm H Hard Disk, Up to 250GB......1-2 Optical Disc Drive ................1-2 Touch Pad:..................1-2 Keyboard ..................1-2 Display Device ................1-2 Camera..................1-3 Keyboard ..................1-3 2. Communications ..................1-4 Wireless LAN .................1-4 Modem...................1-4 Bluetooth ..................1-4 3.
  • Page 7 JHT01 Service Manual IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire, electric shock and injury to persons, including the following: Do not use this product near water, for example, near a bathtub, washbowl, and kitchen ★...

  • Page 8: Scope

    JHT01 Service Manual SCOPE This document describes the functional specifications for the Compal Notebook personal computer JHT01 series. The system is hardware and software compatible with the IBM PC/ATX personal computer. One 2.5” W, 9.5mm H Hard Disk, Up to 250GB •...

  • Page 9: Camera

    JHT01 Service Manual • COLOR TFT/WXGA LCD (CPT CLAA141WB05A Glare) Dimensions: 320.0 (W) x 206 (H) x 5.5 (D) mm (max) 1280 x 800 WXGA Resolution Brightness: 200 Nit (Type) • COLOR TFT/WXGA LCD (LPL LP141WX3-TLN2 Glare) Dimensions: 320.0 (W) x 206 (H) x 5.5 (D) mm (max)

  • Page 10: Communications

    JHT01 Service Manual Communications Wireless LAN • Wireless LAN & WiMAX mini card: module maker: Intel PCI Express base specification compliant Modem • Internal Modem with MDC solution (MDC 3.3/1.5): module maker: Askey Bluetooth • Bluetooth module: module maker: Foxconn chipset: Broadcom Bluetooth...

  • Page 11: Mechanical Specification

    JHT01 Service Manual Mechanical Specification • FOR 14.1” 13.2” (W) x 10.0” (D) x 1.5” (H) [335.0mm (W) x 255mm (D) x 38mm (H)] 6.7lb~7.2lb (including: HDD, ODD and BATT module) Option Pack: • AC adapter: 444g • HDD Pack: 160g (9.5mm) •...
  • Page 13 Chapter 2 Software Specification...
  • Page 15 Contents Chapter 2 Software Specification 1. System Components Summary .............. 2-1 2. System Controls ..................2-5 Buttons ..................2-5 System status indicators..............2-5 3. Core BIOS Features ................2-6 Multi Boot..................2-6 Quiet Boot..................2-6 Boot Block ..................2-6 4. Thermal management................2-7 5. Power Management for ACPI mode ............2-7 Introduction..................2-7 System Time-outs ................2-7 System Power Management............2-7...
  • Page 16 10. System Setup ..................2-14 10.1 Invoking setup ................2-14 10.2 Setup screens................2-14 11. OS Compatibility ..................2-18 12. Software Specification for EC-FW............2-18 12.1 General purpose................2-18 12.2 Features ..................2-18 12.3 Types of EC-FW provided............2-18 12.4 Hot keys for system control ............2-25 12.5 External Buttons status report and control........2-26 12.6 IOMP button.................2-27 12.7 Adapter loading control..............2-27 12.8 External LEDs status report and control ........2-27...

  • Page 17: System Components Summary

    – 667/800/1066 MHz FSB support – Intel Montevina platform: Core Logic – JHL90/JHT00: Cantiga PM + ICH9M. – HL91/JHT01: Cantiga GM + ICH9M. – No on board memory – Support DDR-II 667/800MHz System Memory – Two SODIMM with 1GB/2GB modules –...
  • Page 18 – Microphone-in and headphone-out Audio – Two stereo speakers – JHL90/JHT00:Two internal analog Microphone, Microphone array supported – JHL91/JHT01: One internal analog Microphone. – Askey/AgereAM5/CastleNet/Moto V.92/56K bps; V.90/56K bps – JHL91/JHT01 LAN: 10/100Mbps, Realtek RTL8102e – JHL90/JHT00 LAN: 10/100/1000Mbps, Realtek RTL8111c On-board –...
  • Page 19 JHT01 Service Manual JHL90/JHT00: – 2.0M pixel CMOS via USB 2.0 interface. Auto-focus (ME dimension). Face detect function (Compal SW). Business card scanner. A4 scanner. Web Cam JHL91/JHT01: – 1.3M/2.0M pixel CMOS via USB 2.0 interface. (option) Auto-focus (ME dimension).
  • Page 20 JHT01 Service Manual – Life Cycle: 70% Design Capacity after 300 Cycles in 25 degrees C. 6-cell Li-On, 18650 type, 4800/5200mAh, CBB-look Battery A30. 9-cell Li-On, 18650 type, 7200/7800mAh.(Option for JHL90) – Phoenix First BIOS – 2048KB Flash BIOS ROM –...

  • Page 21: System Controls

    JHT01 Service Manual System Controls Buttons 2.1.1 Power Button The activity of the power button is as follows: • If system is Off/Hibernate: System will be turned on while Power switch is depressed by more than 100 ms. • If system is in Standby state: System will resume while Power switch is depressed by more than 100 ms.

  • Page 22: Core Bios Features

    JHT01 Service Manual Core BIOS Features Multi Boot The notebook can support Multi-Boot for selecting the boot sequence of Hard Drive, Removable Devices, CD-ROM/DVD Drive and Network in Setup. Quiet Boot Quiet Boot replaces the customary technical messages during POST with a more visually pleasing and comfortable display (OEM screen).

  • Page 23: Thermal Management

    JHT01 Service Manual Thermal management Please refer to Keyboard BIOS specification. Power Management for ACPI mode Introduction The notebook supports ACPI. The system will dynamically switch to ACPI mode for configuration and power management when an ACPI OS is loaded.

  • Page 24: Hibernation

    JHT01 Service Manual The operating system detects when the system is idle and places the CPU in one of the 3 CPU low power states (C1, C2 or C3) depending on how much latency it believes the system can afford.

  • Page 25: Acpi (Advanced Configuration And Power Interface)

    JHT01 Service Manual ACPI (Advanced Configuration and Power Interface) Introduction The Advanced Configuration and Power Interface (ACPI) is a well-specified power management and configuration mechanism. It evolves the existing collection of power management codes, APM, PnP BIOS, and Etc. ACPI Sleep Status BIOS must support the following sleep states - S3, S4 and S5.

  • Page 26: Storage Devices And Batteries

    JHT01 Service Manual Critical low battery (depends on ACPI OS setting) Press Lid switch (depends on ACPI OS setting) Press Power Button (depends on ACPI OS setting) Press Lid switch (depends on ACPI OS setting) Press Power Button (depends on ACPI OS...

  • Page 27: Usb Support

    JHT01 Service Manual USB Support This feature allows the use of a USB keyboard to access BIOS Setup and to be used in DOS without additional drivers. USB floppy boot and Crisis Recovery from USB Flash Disk is also supported.

  • Page 28: Customer Specific Features

    JHT01 Service Manual Customer Specific Features Display of System Type and BIOS Version Number on Boot BIOS Version V1.00* Note: * The numbers of BIOS version will be changed. CMOS RAM management The BIOS will automatically update certain information in CMOS on each boot.

  • Page 29: Eeprom

    JHT01 Service Manual Type 3: • System manufacturer name - 16 alphanumeric character • System serial number - 64 alphanumeric characters with 12-character bundle number • Asset tag number - 128 alphanumeric characters EEPROM There is one EEPROM that is used to store many important system and user data in the notebook (some data are reserved for future to use).

  • Page 30: System Setup

    JHT01 Service Manual 10. System Setup 10.1 Invoking setup The setup function can be invoked by pressing F2 when “Press <F2> to enter Setup” message is prompted on the bottom of screen during POST or by selecting <Enter Setup> in Boot Menu after pressing F12.
  • Page 31 JHT01 Service Manual System Memory This field reports the memory size of system base memory. The size is fixed to 640KB. Extended Memory This field reports the memory size of the extended memory with an integer in the system, but 32Bit SMI will occupy 1 MB and UMA frame buffer (Integrated VGA uses only).
  • Page 32 JHT01 Service Manual Change Option: No Change, Enable, Disable, Activate, Deactivate, Clear, Enable and Activate, Deactivate and Disable, SetOwnerInstall with state=True, SetOwnerInstall with state=False, Enable + Activate + SetOwnerInstall_True, Deactivate + Disable + SetOwnerInsstall_False, Clear + Enable + Activate 10.2.3 Exit...

  • Page 33: Exit Discarding Changes

    JHT01 Service Manual Exit Discarding Changes Allows the user to discard changes to CMOS and reboot system. The following message is prompted when user press “Enter” on the item. Setup Warning Configuration has not been saved! Save before exiting? [Yes]...

  • Page 34: Os Compatibility

    JHT01 Service Manual 11. OS Compatibility Windows Vista 32-bit Windows Vista 64-bit 12. Software Specification for EC-FW 12.1 General purpose • Define the standard interface, special OEM features and OEM EC commands of EC BIOS. 12.2 Features • Advanced Power Management 1.2 support •...
  • Page 35 JHT01 Service Manual 12.3.1 Command set 40h-4Fh for OEM defined through Port60/64, Port62/66 and Port68/6C • Command Set via port 60/64, 62/66 and 68/6C. DATA Description return Boot fail restart 0x01-0x7F Boot fail restart, write in a byte to EC and None enable the timer.
  • Page 36 JHT01 Service Manual DATA Description return Speaker mute On/Off or LED control Return back the control right to EC None System Led on and control by OS None Power management Led on and control by OS None Charge Led on and control by OS...
  • Page 37 JHT01 Service Manual DATA Description return 0x80-0xFF Enabled S2D function None Write the data to device through SMBus interface (00h->Success, FEh->Fail) Slave address of device One byte Lo byte address if device is EEPROM, One byte otherwise is command or register.
  • Page 38 JHT01 Service Manual DATA Description return Byte1: minor revision number (0-9) Byte2: Type of EC-FW from ‘A’ to ‘Z’ Byte3: If it is 00h then system display “ROM”, it is “T01” if set 01h and so on. Get EC information...
  • Page 39 JHT01 Service Manual DATA Description return PME signal active Sleep button event None Module identification One byte Bit0: Main HDD exist Bit1: Int. FDD exist Bit2: CD_ROM exist Bit3: 2nd HDD exist Bit4: LS120 exist Bit5: External FDD Bit6: CRT plug In/Out:0=Out, 1=In...
  • Page 40 JHT01 Service Manual DATA Description return Modem ring enable None Modem ring disable None PME enable None PME disable None In S4 status None Resume form S4 status None RTC wake up enable None RTC wake up disable None Force battery pack auto learning (Support in...

  • Page 41: Hot Keys For System Control

    JHT01 Service Manual DATA Description return Minutes which want to display None Update Second of RTC, Second (0. 59), BCD format Seconds which want to display None Reserved None Get brightness level One byte Current brightness level (0x00-0x0a) Set brightness level...

  • Page 42: External Buttons Status Report And Control

    JHT01 Service Manual 12.4.1 Kill switch relationship with Wireless LAN and Bluetooth The following is two state of kill switch Kill switch On: When users press Fn+F2, AP will be showed. At this time, User can turn on/off which Wireless LAN and Bluetooth.

  • Page 43: Iomp Button

    JHT01 Service Manual 12.5.9 Power USB Button In S3 mode AC + BATTERY AC only BATTERY only JHT0x_JHL9x Support Support Support • Power USB Button also be supported in S3 and S5 mode 12.6 IOMP button 12.6.1 Mode Button • Open the Media player under Windows mode.
  • Page 44 JHT01 Service Manual 12.8.2 Definitions of System state LED • Power LED and Suspend LED indicate the systems power states by their combinations • (Normal on is Blue / Blinking is Amber) System Power Power LED Suspend LED State Blinking...

  • Page 45: Battery Status Report And Control

    JHT01 Service Manual Amber solid on Battery within low state. (Battery gas-gauge ≤8%) • When the battery is in critical low state, the system is protected and can’t be re-powered on without the AC power connected. In this situation, the LED will be in amber color for a short time to indicate this condition.

  • Page 46: Ec-Fw Power Management Support

    JHT01 Service Manual Charging Discharging Action Battery Voltage ≤ 8.9V and temp. > 20°C. Shut down System Or Battery Voltage ≤ 8.7V and temp. < 20°C. R.S.O.C ≤ 5% during system is in S2R Wakeup mode. System Fast Charge Time...

  • Page 47: Thermal Status Report And Fan Control

    JHT01 Service Manual • Sleep mode LCD panel back-light off • Save to RAM Keyboard (int./ext.) scanning off • Save to DISK No actions except turning off system with AC exist or turn off KBC without AC. 12.10.2 SMI/SCI/SWI/SBS/SPB events •...
  • Page 48 JHT01 Service Manual 12.11.1.1 Fan control by Voltage • EC will output voltage to control fan directly. (DTS/Tdiode Thermal Policy) Speed stage Speed down Speed up Fan 1 temperature (°C) temperature (°C) Speed 0 Speed 1 2500 Speed 2 3000...

  • Page 49: Three Host Interface Channels Support

    JHT01 Service Manual • EC will output voltage to control fan directly. (VGA Thermal Policy) Speed stage Speed down Speed up Fan 1 temperature (°C) temperature (°C) Speed 0 Speed 1 Speed 2 Speed 3 Speed 4 Speed 5 4200...

  • Page 50: Acpi Ec Interface Specification Support

    JHT01 Service Manual 12.14.2 Hot swapping control • When the device is plugged in, the software automatically initializes the state of that device, checks port swapping, and setup the KBC to handle dual- device operation. In dual-device operation, the internal device is set in the same state as external device.

  • Page 51: Ec Name Space Configuration

    JHT01 Service Manual 12.16.4 Internal Key-Pad mode control • The key pad mapping shows as below. Number lock on Number lock off Single key 12.17 EC name space Configuration 12.17.1 Customer EC name space definition Offset Description Customer EC name space 00h - 07h 12.17.2 Project EC name space definition...

  • Page 52: External Name Space Definition

    JHT01 Service Manual SMBus alarm address SMBus alarm data 0 SMBus alarm data 1 12.17.4 External name space definition Offset Description EXT_NAMESPACE_INDEX EXT_NAMESPACE_BANK EXT_NAMESPACE_DATA 12.17.5 Word registers to Emulate smart selector RAM definition Offset Description SEL_STATE0 Bit0 - PRESENT_A (Set if 1...
  • Page 53 JHT01 Service Manual Offset Description Bit5 - Contrast button (1:pressed) Bit6 - Brightness button (1:pressed) Bit7 - Save to disk button (1:pressed) ACPI_FLAG2 Bit0 - ACPI entry S4 state Bit1 - password enable, set 1 Bit2 - beep alarm enable, set 1...
  • Page 54 JHT01 Service Manual Offset Description ACOFF_SOURCE: Enable AC_OFF signal Bit0 - CHARGECURRENT (1 = AC_OFF for when stop charge but have charge current) Bit1 - ADPOVP (1 = AC_OFF for adaptor improper) Bit2 - BATTLEARN (1 = AC_OFF for battery at learning mode)
  • Page 55 JHT01 Service Manual Offset Description Bit5-Bit6 - Reserved Bit7 - THROTTLING (1: Control HW throttling active) CPU_TEMP: CPU current temperature CPU_TEMP_LOCAL: CPU local temperature SKIN_TEMP90: SKIN temperature address 90 OS Shutdown Temp. For system read setting. (VGA) VGA_TEMP: VGA temperature...
  • Page 56 JHT01 Service Manual Offset Description Design Voltage C8h-C9h Design Capacity CAh-CBh Full charge capacity CCh-CDh Gasgauge Battery cycle counter Battery current D0h-D1h Battery average current D2h-D3h System power consumption Battery Volt Battery Temp Battery Average Temp Battery charge current D8h-D9h...
  • Page 57 JHT01 Service Manual Offset Description Bit3 - Battery shutdown 5% Bit4 - Start to read battery Bit5 - Start to count communication counter Battery stop charge status (low byte) Bit0 - Battery fast charging timeout Bit1 - Battery bad cell...
  • Page 58 JHT01 Service Manual Offset Description Full charge capacity 2Ch-2Dh Gasgauge Battery cycle counter Battery current 30h-31h Battery average current 32h-33h System power consumption Battery Volt Battery Temp Battery Average Temp Battery charge current 38h-39h Battery current Temp sample counter Battery Command index for read battery through SMBus...

  • Page 59: Embedded Controller Chipset

    JHT01 Service Manual Offset Description Battery stop charge status (low byte) Bit0 - Battery fast charging timeout Bit1 - Battery bad cell Bit2 - Battery communication fail Bit3 - Use for detect battery charging suspend Bit4 - Battery command stop charge...
  • Page 61 Chapter 3 Hardware...
  • Page 63 Contents Chapter 3 Hardware 1. Top View ....................3-1 2. Bottom View.................... 3-2...

  • Page 65: Top View

    JHT01 Service Manual • Major Sub-assembly Specification • System interconnection (For JHT01) Top View Position Description Position Description MB_PCB T/P Board to MLB USB/Board Function Board to MLB K/B to MLB (25 PIN) Inverter Conn EXP-CARD CONN SPEAKER Conn SATA HDD CONN...

  • Page 66: Bottom View

    JHT01 Service Manual Bottom View Position Description Position Description RJ45 D-sub ODD Conn MDC Conn FAN to MLB Mini PCI Express Conn (H=4.0mm) CPU SOCKET Mini PCI Express Conn (H=9.9mm) H5.2 DDRII 3 IN 1 Card H9.2 DDRII HDMI Conn...
  • Page 67 Chapter 4 DC-DC Converter...
  • Page 69 Contents Chapter 4 DC-DC Converter 1. Power ..................... 4-1 2. DC-DC CONVERTER................4-1 JHT01 Adapter Description............4-2 Feature ..................4-2 Adapter Electrical Specification .............4-2 3. DC-DC CONVERTER................4-3 Description..................4-3 Features ..................4-3 Electrical specification ..............4-3 Temperature Range: ..............4-3 Charger..................4-8 OVER Current protection:..............4-8 OVER Voltage protection:..............4-9 Under voltage protection:...............4-9...

  • Page 71: Power

    JHT01 Service Manual Power • 6 cells Li-Ion 18650 size smart battery Pack with 53.28Wh capacity • 6 cells Li-Ion 18650 size smart battery Pack with 57.72Wh capacity • 9 cells Li-Ion 18650 size smart battery Pack with 79.92Wh capacity...

  • Page 72: Jht01 Adapter Description

    JHT01 Service Manual JHT01 Adapter Description This specification defines the performance and characteristic of 65W AC adapter power supply. It supplies a constant voltage 19V output source for JHT01 series notebook computer. Feature • Accepts universal input from 90V AC to 264V AC •...

  • Page 73: Dc-Dc Converter

    JHT01 Service Manual DC-DC CONVERTER Description The DC-DC converter is designed to supply the power for JHT01 series notebook computer of Compal. It supply +5VALWP, +3VALWP, +1.8VP, +1.5VP, +1.05VSP, +0.9VSP for logical system, + CPU_CORE for CPU and supplies for the built-in KB926 microprocessor which handles the keyboard and PMU control functions of the system.
  • Page 74 JHT01 Service Manual Total regulation 5V±5% depend on VCC static and Transient Tolerance-- Ripple voltage 100mVp-p max 20mVp-p max@36A Item +0.9VSP +3VALWP +1.05VSP nominal voltage +0.9V +3.3V +1.05V Min. current Max. current 1.4A 5.5A 8.16A Peak current 7.85A 11.66A Total regulation 0.9V±5%...
  • Page 75 JHT01 Service Manual 1.3375 1.3250 1.3125 1.3000 1.2875 1.2750 1.2625 1.2500 1.2375 1.2250 1.2125 1.2000 1.1875 1.1750 1.1625 1.1500 1.1375 1.1250 1.1125 1.1000 1.0875 1.164V 1.0750 1.0625 1.0500 1.0375 1.0250 1.0125 1.0000 0.9875 0.9750 0.9625 0.9500 0.9375 0.9250 0.9125...
  • Page 76 JHT01 Service Manual 0.9000 0.8875 0.8750 0.8625 0.8500 0.8375 0.8250 0.8125 0.8000 0.7875 0.7750 0.7625 0.7500 0.7375 0.7250 0.7125 0.7000 0.6875 0.6750 0.6650 0.6500 0.6375 0.6250 0.6125 0.6000 0.5875 0.5750 0.5625 0.5500 0.5375 0.5250 0.5125 0.5000 0.4875 0.4750 0.4625...
  • Page 77 JHT01 Service Manual 0.4500 0.4375 0.4250 0.4125 0.4000 0.3875 0.3750 0.3625 0.3500 0.3375 0.3250 0.3125 0.3000 0.2875 0.2750 0.2625 0.2500 0.2375 0.2250 0.2125 0.2000 0.1875 0.1750 0.1625 0.1500 0.1375 0.1250 0.1125 0.1000 0.8750 0.7500 0.6250 0.5000 0.3750 0.2500 0.1250...

  • Page 78: Charger

    JHT01 Service Manual Charger • Controlled by KB926 microprocessor from motherboard • Temperature sense capability for the battery (charge active between 0°C~ 40°C) • Fast charge current 3Amps (max.) for Li-Ion Battery at system off, approach 25W fast charge at system ON. (Depend on system load) •...

  • Page 79: Over Voltage Protection

    JHT01 Service Manual • +1.05VSP: >14A OVER Voltage protection: • +5VALWP: 5V + (108% ~ 114%) • +3VALWP: 3.3V + (112% ~ 120%) • +CPU_CORE: over 200mV of programmed VID level • +1.8VP: 1.8V + (113% ~ 119%) • +1.5VSP: 1.5V + (113% ~ 119%)
  • Page 80 JHT01 Service Manual 3.10.2 Battery Connector Pin 1: BATT+ Pin 2: BATT+ Pin 3: CNT1 (ID) Pin 4: CNT2 (B/I) Pin 5: EC_SMCA (SMC) Pin 6: EC_SMDA (SMD) Pin 7: TS_A (TS) Pin 8: GND Pin 9: GND 3.10.3 Interface between Power with M/B...

  • Page 81: Battery

    JHT01 Service Manual H_DPRSTP# 0~1.05V Analog signal; control CPU C3, C4 signal. ADP_I Analog signal, control CPU throttling in UMA SKU CLK_ENABLE Analog signal, clock generator enable signal. 0~3.3V 3.11 BATTERY 3.11.1 Li-Ion smart 3.11.2 Battery Specification 1-1. EE information...

  • Page 82: Inverter Specification Jht00/01 14.1 Inch Inverter Spec

    JHT01 Service Manual SMBus clock interface I/O pin. SMBus data interface I/O pin. Connect to thermister (Note 3) Battery Negative Terminal. Battery Negative Terminal. Note: 1. ID pin must be floating. 2. The battery can be charged/discharged only while this pin is connected to GND by the system.

  • Page 83: Features

    • Close loop controls lamp current. Absolute maximum rating • Environment temperature: Operating temperature: 0°C ~ 55°C Storage temperature: -20°C ~ 70°C Humidity: 0 ~ 90% without condensation MTBF: MIN 50000 hours. (In Compal system) Electrical characteristic Item Symbol Min. Typ.
  • Page 84 JHT01 Service Manual Duty = Period Line transient (10.8V to Lamp current 21V/100us) and turn on over-shoot transient Current − Waveform 1.27 1.56 Multiple factor − − Unbalance -10% +10% Multiple Rate Turn off current PWM=30% (Hight side) Turn off...

  • Page 85: Electrical Specification

    JHT01 Service Manual • Inverter should pass human body safety test. • Inverter should no smoking by any component open / short test • Transformer voltage stress should not be over 85% under any condition (turn on overshoot transient and line transient).

  • Page 86: Safety Protection

    JHT01 Service Manual DAC_BRIG Max. Current limit Power system return Power system return 4.5.2 Output Connector: CN2: JST_SM02B_BHSS-1 Symbol Description Connected to high voltage of LCD lamp Connected to low voltage of LCD lamp Note: Please mark “CAUTION HIGH VOLTAGE” around CN2 Safety Protection 4.6.1 Open lamp protection:...

  • Page 87: Reliability Requirements

    JHT01 Service Manual Reliability Requirements Mean Time Between Failures (MTBF) • 17,000 hours with 90% confidence level. Reference Document Electro-Static Discharge (ESD) Performance Criteria Soft error No soft error Allowable Level 3 Level2 Level 1 Air Discharge Contact Discharge 4-17...
  • Page 89 Chapter 5 Disassembly Guide...
  • Page 91 Contents Chapter 5 Disassembly Guide 1. Disassembling the Base Unit ..............5-1 Removing the Battery Pack ............5-2 Removing the HDD Module ............5-3 Removing the DDR RAM...............5-5 Disassembling the ODD (CD-ROM/DVD-ROM/CD-RW…) ...5-7 Removing the Keyboard ..............5-9 Removing the Power Board............5-12 Removing the Modem card............5-13 Removing the System Fan ............5-16 Removing the Thermal Module............5-17 1.10 Removing the CPU ..............5-18...

  • Page 93: Disassembling The Base Unit

    JHT01 Service Manual Disassembling the Base Unit These are the directions for disassembling the base unit. You will need a 5.5mm Nut Driver, a medium size screwdriver. These directions are to disassemble the complete unit and are cross-referenced to Chapter 6 for the replacement of component parts.

  • Page 94: Removing The Battery Pack

    JHT01 Service Manual Removing the Battery Pack To remove the battery pack from the battery bay, follow the steps below: 1. Turn the notebook upside down. 2. Slide the right battery release lock in the direction of the arrow to unlock the battery pack.

  • Page 95: Removing The Hdd Module

    JHT01 Service Manual Removing the HDD Module Follow the steps below to remove the HDD module: 1. Turn the notebook upside down. 2. Remove the two screws securing the HDD compartment cover. 3. Pull up the HDD compartment cover in the direction of the arrow.
  • Page 96 JHT01 Service Manual 4. Remove the two screws securing the HDD module in place. 5. Pull the tab to remove the HDD module in the direction of the arrow. 6. Remove the four silver screws to take off the HDD case.

  • Page 97: Removing The Ddr Ram

    JHT01 Service Manual Removing the DDR RAM Follow the steps below to remove the DDR RAM: 1. Turn the notebook upside down. 2. Remove one screw securing the RAM cover and then remove the cover. 3. Push the latches to release the RAM module. A spring will force one end of...
  • Page 98 JHT01 Service Manual 4. Grasp the module and pull it out.

  • Page 99: Disassembling The Odd (Cd-Rom/Dvd-Rom/Cd-Rw

    JHT01 Service Manual Disassembling the ODD (CD-ROM/DVD-ROM/CD-RW…) Follow the steps below to disassemble the optical drive (ODD): 1. Turn the notebook upside down. 2. Remove three screws securing the ODD. 3. Remove the screw and insert a flat screwdriver into the slot as shown and...
  • Page 100 JHT01 Service Manual 4. Remove two screws from the bracket plate, and then remove the bracket plate.

  • Page 101: Removing The Keyboard

    JHT01 Service Manual Removing the Keyboard Open the display panel and follow the steps below to remove the keyboard. 1. Turn the notebook upside down than remove three screws. 2. Insert a flat screwdriver into the slot as shown and turn the notebook.
  • Page 102 JHT01 Service Manual 3. Lift up the strip cover from the right side. 4. Disconnect the function board/power board cable from the underside of the strip cover and remove it. 5. Remove three screws securing the keyboard. 5-10...
  • Page 103 JHT01 Service Manual 6. Turn over the keyboard, revealing the keyboard cable underneath. 7. Use a thin tool such as a screwdriver to lever up the connector bracket and disconnect the keyboard cable from the motherboard. 8. Lift and remove the keyboard.

  • Page 104: Removing The Power Board

    JHT01 Service Manual Removing the Power Board To remove the LCD module, first remove the keyboard. Then follow the steps below: 1. Remove two screws securing the power board to the logic upper. 2. Disconnect the power board cable as shown and remove the power board.

  • Page 105: Removing The Modem Card

    JHT01 Service Manual Removing the Modem card To remove the Modem card, follow the steps below: 1. Turn the notebook over. Remove three screws securing the thermal cover. 2. Remove the cover. 5-13...
  • Page 106 JHT01 Service Manual 3. Disconnect two screws and remove from the Modem card. 4. Remove the Modem card. 5-14...
  • Page 107 JHT01 Service Manual 5. Remove the stand-off bracket. CAUTION: Do not touch the connectors on the Modem card or on the computer. Debris on the connectors may cause the unit to malfunction. 5-15...

  • Page 108: Removing The System Fan

    JHT01 Service Manual Removing the System Fan To remove the system fan. Then follow the steps below: 1. Turn the notebook over. Remove three screws securing the system fan. 2. Disconnect the fan and lift out the system fan. 5-16...

  • Page 109: Removing The Thermal Module

    JHT01 Service Manual Removing the Thermal Module To remove the thermal module, first remove the Modem card. Then follow the steps below: 1. Turn the notebook over. Remove four screws securing the thermal module to the motherboard. 2. Lift and remove the thermal module from the motherboard.

  • Page 110: Removing The Cpu

    JHT01 Service Manual 1.10 Removing the CPU To remove the CPU, first remove the Modem card, and thermal module. Then follow the steps below: 1. Turn the cam on the CPU socket with a flat-blade screwdriver so that the notch on the cam is aligned with the open side of the CPU socket to unlock the CPU.

  • Page 111: Removing The Bluetooth Module

    JHT01 Service Manual 1.11 Removing the Bluetooth Module To remove the Bluetooth module, first remove the keyboard. Then follow the steps below: 1. Remove one screws securing the Bluetooth module to the logic lower. 2. Disconnect the Bluetooth cable and remove the Bluetooth module.

  • Page 112: Removing The Lcd Module

    JHT01 Service Manual 1.12 Removing the LCD Module To remove the LCD module, first remove the keyboard. Then follow the steps below: 1. Disconnect the LCD power (LVDS), CMOS, and microphone cables and pull the wireless and TV tuner card antennas free from the laptop as shown.
  • Page 113 JHT01 Service Manual 3. Remove the LCD module. 5-21...

  • Page 114: Disassembling The Display And The Inverter Board

    JHT01 Service Manual 1.13 Disassembling the Display and the Inverter Board To disassemble the display and inverter board, first remove the keyboard. Then follow these steps: 1. Remove six screws pads as shown. 2. Remove the six screws securing the LCD bezel to the LCD module.
  • Page 115 JHT01 Service Manual 3. Carefully insert your fingers between the display and the LCD bezel as indicated by the arrow, and gently pry up the LCD bezel. 4. Remove the four screws mounting the display, inverter board, and LVDS/CMOS cable to the LCD cover.
  • Page 116 JHT01 Service Manual 5. Disconnect the two connectors on either side of the inverter board. Remove the inverter board. 6. Gently lift out the display. Remove eight screws securing the hinges to the display. 5-24...
  • Page 117 JHT01 Service Manual 7. Detach the LVDS cable from the back of the LCD panel. 5-25...

  • Page 118: Removing The Camera Module

    JHT01 Service Manual 1.14 Removing the Camera Module To remove the camera module, first remove the keyboard, LCD module, LCD display, and inverter board. Then follow these steps: 1. Disconnect the CMOS cable from the camera module. 2. Remove two screws securing the camera module to the LCD cover. Remove the camera module.

  • Page 119: Removing The Logic Upper

    JHT01 Service Manual 1.15 Removing the Logic Upper To remove the logic upper, first remove the battery pack, HDD, memory module, ODD, keyboard, power board, wireless LAN, system fan, thermal module, CPU, Bluetooth module, and LCD module as described in the preceding sections.
  • Page 120 JHT01 Service Manual 3. Lift off the logic upper. 5-28...

  • Page 121: Removing The Function Board

    JHT01 Service Manual 1.16 Removing the Function Board To remove the front board, first remove the logic upper as described in the preceding sections. Then follow the steps below: 1. Remove one screw securing the Function board to the logic lower.

  • Page 122: Removing The Motherboard

    JHT01 Service Manual 1.17 Removing the Motherboard To remove the motherboard, first remove the logic upper, and LED board as described in the preceding sections. Then follow the steps below: 1. Remove four screws securing the motherboard to the logic upper.

  • Page 123: Removing The Modem Cable Card

    JHT01 Service Manual 1.18 Removing the Modem cable card 1. Lift the Modem cable card from its housing and detach the cable to remove it from the logic upper. 5-31...

  • Page 124: Removing The Touch Pad

    JHT01 Service Manual 1.19 Removing the Touch Pad To remove the touch pad board, first remove the logic upper as described in the preceding sections. Then follow the steps below: 1. Remove one screw securing the touch pad to the rear side of the logic upper.
  • Page 125 Chapter 6 Testing and Troubleshooting...
  • Page 127 Contents Chapter 6 Testing and Troubleshooting 1. PERFORM VISUAL INSPECTION ............6-1 2. Troubleshooting Flowchart..............6-1 3. Power Supply Troubleshooting ............... 6-5 Procedure 1 Power Status Check ..........6-6 Procedure 2 Adaptor / battery replacement ........6-7 Procedure 3 Power supply connection check ........6-7 Procedure 4 Diagnostic check ............6-8 Procedure 5 Replacement check...........6-9 4.
  • Page 128 11.1 Procedure 1 Audio CD check............6-26 11.2 Procedure 2 Drive cleaning check ..........6-26 11.3 Procedure 3 Software check............6-26 11.4 Procedure 4 Diagnostic test............6-26 11.5 Procedure 5 Connection check and replacement check....6-26 12. Modem Troubleshooting ................6-28 12.1 Procedure 1 Telephone line connection check ......6-29 12.2 Procedure 2 Modem card connection check........6-29 12.3 Procedure 3 Modem replacement check ........6-29 13.

  • Page 129: Perform Visual Inspection

    JHT01 Service Manual The purpose of this chapter is to provide a systematic method of isolating problems you may have with the JHT01 series Notebook Computer. We assume that you have a basic understanding of DOS-based computer systems as well as knowledge of standard troubleshooting procedures.
  • Page 130 JHT01 Service Manual START Connect the AC adapter to the DC-IN socket Perform the Power Supply Troubleshooting procedures in Is the DC-IN LED on? section 6-2 Perform the Power Supply Troubleshooting procedures in Is the Battery LED on? section 6-2...
  • Page 131 JHT01 Service Manual Perform the keyboard Does typed characters appear correctly? Troubleshooting procedures in section 6-5 Insert the diagnostics disk into FDD. Then run the diagnostics test program. Perform the FDD Troubleshooting procedures Is the diagnostics test loaded? in section 6-4...
  • Page 132 JHT01 Service Manual If the diagnostics program cannot detect an error, the problem may be intermittent. The test program should be executed several times to isolate the problem. When a problem has been located, perform the appropriate troubleshooting procedures as follows: •...

  • Page 133: Power Supply Troubleshooting

    JHT01 Service Manual Power Supply Troubleshooting START Check Power Supply Status (Procedure 1) Replace adaptor / battery Are the DC-IN and (Procedure 2) Battery LEDs lit? Check power supply connections (Procedure 3) Run diagnostic program Can you turn the computer on?

  • Page 134: Procedure 1 Power Status Check

    JHT01 Service Manual The power supply controls many functions and components. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed. The flowchart in Figure 6-2 gives a summary of the process.
  • Page 135 JHT01 Service Manual Table 2-2 POWER LED Power supply status POWER LED System Power On (LED is solid blue). blue Solid on System Suspended Blue blinking System Power Off. To check the power supply status, install a battery pack and connect an AC adaptor to the DC-IN port on the computer and to a power supply.

  • Page 136: Procedure 4 Diagnostic Check

    JHT01 Service Manual Any of the connectors may be disconnected. Perform Check 1. Check 1 Disconnect the AC power cord from wall outlet. Check the power cable for breaks. • If the power cord is damaged, connect a new AC power cord.

  • Page 137: Procedure 5 Replacement Check

    JHT01 Service Manual Procedure 5 Replacement check The system board may be disconnected or damaged. Disassemble the computer following the steps described Replacement Procedures . Check the connection between the AC adaptor and the system board. After checking the connection,...

  • Page 138: Display Troubleshooting

    JHT01 Service Manual Display Troubleshooting START Perform external display cheek (Procedure 1) Does the external display function ok? Perform diagnostic check (Procedure 2) Display is not faulty. Continue Was a display problem troubleshooting detected? refer to Figure 2.1 Perform connector and...

  • Page 139: Procedure 1 External Display Check

    JHT01 Service Manual This section describes how to determine if the computer’s display is functioning properly. The process is outlined in Figure 6-3. Start with Procedure 1 and continue with the other procedures as instructed. • Procedure 1: External display check •...
  • Page 140 JHT01 Service Manual Check 3 Replace the LCD module with a new one and test display again. • If the problem still exists, perform Check 4. Check 4 Replace the LCD/FL cable with a new one and test display again.

  • Page 141: Keyboard Troubleshooting

    JHT01 Service Manual Keyboard Troubleshooting START Perform external keyboard cheek (Procedure 1) Does the external keyboard function Perform diagnostic check (Procedure 2) Keyboard is not faulty. Continue Was a keyboard problem troubleshooting detected? refer to Figure 2.1 Perform connector and...

  • Page 142: Procedure 1 External Keyboard Check

    JHT01 Service Manual To determine if the computer’s keyboard is functioning properly, perform the following procedures. Figure 6-5 outlines the process. Start with Procedure 1 and continue with the other procedures as instructed. • Procedure 1: External keyboard check • Procedure 2: Diagnostic check •...

  • Page 143: External Usb Devices Troubleshooting

    JHT01 Service Manual External USB Devices Troubleshooting START Perform external device and connection check (Procedure 1) Does the device function Check USB port when connected to a connection different USB port? Original USB Does an alternative USB device is faulty...

  • Page 144: Procedure 1 External Device And Connection Check

    JHT01 Service Manual To determine if the computer’s external USB devices are functioning properly, perform the following procedures. Figure 6-5 outlines the process. Start with Procedure 1 and continue as instructed. • Procedure 1: External device and connection check • Procedure 2:...

  • Page 145: Crt Troubleshooting

    JHT01 Service Manual CRT troubleshooting START Perform CRT connection check (Procedure 1) Replace CRT Does replace CRT cable cable function property? Perform CRT set check (Procedure 2) Use different CRT functioning CRT set Replace system board Figure 6-6 CRT troubleshooting process...

  • Page 146: Procedure 1 Crt Connection Check

    JHT01 Service Manual To determine if the computer’s CRT port is functioning properly, perform the following procedures. Figure 6-6 outlines the process. Start with Procedure 1 and continue as instructed. • Procedure 1: CRT connection check • Procedure 2: CRT set check...

  • Page 147: Hdmi Troubleshooting

    JHT01 Service Manual HDMI troubleshooting START Perform HDMI connection check (Procedure 1) Replace HDMI Does replace HDMI cable cable function property? Perform HDMI set check (Procedure 2) Use different HDMI functioning HDMI set Replace system board Figure 6-7 HDMI troubleshooting process...

  • Page 148: Procedure 1 Hdmi Connection Check

    JHT01 Service Manual To determine if the computer’s HDMI port is functioning properly, perform the following procedures. Figure 6-7 outlines the process. Start with Procedure 1 and continue as instructed. • Procedure 1: HDMI connection check • Procedure 2: HDMI set check...

  • Page 149: Touch Pad Troubleshooting

    JHT01 Service Manual Touch Pad Troubleshooting START Touch Pad connection check (Procedure 1) Touch Pad replacement check (Procedure 2) Replace system board Figure 6-8 Touch Pad troubleshooting process 6-21...

  • Page 150: Procedure 1 Touch Pad Connection Check

    JHT01 Service Manual To determine if the computer’s built-in Touch Pad is functioning properly, perform the following procedures. Figure 6-8 outlines the process. Start with Procedure 1 and continue as instructed. • Procedure 1: Touch Pad connection check • Procedure 2:...

  • Page 151: Speaker Troubleshooting

    JHT01 Service Manual 10. Speaker Troubleshooting START Perform audio source test (Procedure 1) Speakers are not faulty. Continue Do all sources have troubleshooting - same problem? see Figure 2-1 Perform earphone test (Procedure 2) Do earphones function correctly? Perform connection...

  • Page 152: Procedure 1 Audio Source Test

    JHT01 Service Manual To determine if the computer’s built-in speakers are functioning properly, perform the following procedures. Figure 6-9 outlines the process. First adjust the speaker volume to an appropriate level. Start with Procedure 1 and continue as instructed. • Procedure 1: Audio source test •...

  • Page 153: Cd-Rom/Dvd Troubleshooting

    JHT01 Service Manual 11. CD-ROM/DVD Troubleshooting START Perform audio CD check (Procedure I) Perform drive- cleaning check Audio CD functions ok? (Procedure 2) Perform software check (Procedure 3) Perform diagnostic test (Procedure 4) Perform connection and replacement check (Procedure 5)

  • Page 154: Procedure 1 Audio Cd Check

    JHT01 Service Manual This section describes how to determine if the computer’s internal DVD-ROM drive or CD-RW/DVD-ROM drive is functioning properly. Figure 6-10 outlines the process. Perform the steps below starting with Procedure 1 and continue with the other procedures as required.
  • Page 155 JHT01 Service Manual Check 2 The drive or drive cable may be defective or damaged. Replacement Procedures. • If the drive is still not functioning properly, perform Check 3. Check 3 The system board may be damaged. 6-27...

  • Page 156: Modem Troubleshooting

    JHT01 Service Manual 12. Modem Troubleshooting START Perform telephone line connection check (Procedure 1) Check / replace Computer unable to telephone line and detect telephone connections signal? Perform connection check (Procedure 2) Perform replacement check (Procedure 3) Replace system board...

  • Page 157: Procedure 1 Telephone Line Connection Check

    JHT01 Service Manual This section describes how to determine if the computer’s modem is functioning properly. Figure 6-11 outlines the process. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. • Procedure 1: Telephone line connection check •...

  • Page 158: Express Card Troubleshooting

    JHT01 Service Manual 13. Express card Troubleshooting START Perform express card test (procedure 1) Do errors occur Express card unit during express is not faulty card test? Perform express card socket replacement check (Procedure 2) Replace system board Figure 6-12 Express card troubleshooting process...

  • Page 159: Procedure 1 Express Card Test

    JHT01 Service Manual This section describes how to determine if the express card player is functioning properly. The process is summarized in Figure 6-12. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.

  • Page 160: Wireless Lan Troubleshooting

    JHT01 Service Manual 14. Wireless LAN Troubleshooting START Perform diagnostic test (Procedure 1) Wireless LAN Was an wireless LAN problem dejected? system is not faulty. Perform connector and replacement check (Procedure 2) Replace wireless LAN antenna/unit Replace system board Figure 6-13 Wireless LAN troubleshooting process...

  • Page 161: Procedure 1 Diagnostic Test

    JHT01 Service Manual The wireless LAN antenna wire, wireless LAN unit or system board may each be the source of a wireless LAN fault. Any of these components may be damaged. to determine if the computer’s wireless LAN system is functioning properly, perform the following procedures.
  • Page 162 JHT01 Service Manual Check 3 The wireless LAN unit may be damaged. Replace it with a new one following the instructions in Chapter 4. • If the problem still exists, perform Check 4. Check 4 The system board may be damaged. Replace it with a new one following the instructions in Chapter.

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