Laptop User Manual

ManualsBrandsMiTAC ManualsLaptop7521 PLUS/N

SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR

7521 Plus/N

AUG. 2001

：

Richard Wang

TESTING TECHNOLOGY DEPARTMENT / TSSC

Summary of content (180 pages)

PAGE 1
SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR 7521 Plus/N BY： Richard Wang TESTING TECHNOLOGY DEPARTMENT / TSSC AUG.
PAGE 2
7521Plus / N N/B MAINTENANCE CONTENTS 1. Hardware Engineering Specification ------------------------------------------------------------------------------- 3 1.1 1.2 1.3 1.4 1.5 1.
PAGE 3
7521Plus / N N/B MAINTENANCE CONTENTS 6. System Block Diagram ------------------------------------------------------------------------------------------------- 97 7. Maintenance Diagnostic ----------------------------------------------------------------------------------------------- 98 7.1 Introduction ----------------------------------------------------------------------------------------------------------------------------- 98 7.
PAGE 4
7521Plus / N N/B MAINTENANCE 1. Hardware Engineering Specification 1.1 Introduction 1.1.1 General Description This document describes the engineering specification for 7521 plus portable notebook computer system. 1.1.2 System Overview The 7521 plus model motherboard will accept Intel Pentium III at FSB 133/100MHz and Celeron at FSB 66MHz processor with FC-PGA packaged. Those are Pentium III 600/650/667/700/733/ 750/800/866 MHz, and Celeron 3/566/600/633/667/700/733/766 MHz.
PAGE 5
7521Plus / N N/B MAINTENANCE The SiS900 is a single chip 10/100Mbps Fast Ethernet LAN solution, which fully integrates both the Media Access Controller (MAC) with PCI bus master interface and 802.3u compliant 10/100Mbps physical layer interface into a 128 pins PQFP, 0.35um process chip. It is targeted at low-cost, low-power, high volume desktop PC motherboards, mobile PC module, adapter cards, and embedded systems.
PAGE 6
7521Plus / N N/B MAINTENANCE 1.2.2 CPU MODULE Intel Pentium III/Celeron Processors with 370 pins FC-PGA package. Pentium III 600/650/667/700/733/750/800 MHz, FC-PGA package at FSB 133/100Mhz. Celeron 600/633/667/700/733 MHz, FC-PGA package at FSB 66Mhz. 1.2.3 Synthesizer System frequency synthesizer : ICS9248-102 Maximized EMI suppression using Integrated Circuit System spread spectrum technology.
PAGE 7
521Plus / N N/B MAINTENANCE By integrating the UltraAGP TM technology and advanced 64-bit graphic display interface, SiS630S delivers AGP 4x performance and memory bandwidth of up to 1 GB/s. In addition, SiS also supports an extra AGP Slot that supports 4X and Fast Write transactions. Furthermore, SiS630S provides powerful hardware decoding DVD accelerator to improve the DVD playback performance.
PAGE 8
7521Plus / N N/B MAINTENANCE Integrated DRAM Controller 3-DIMM/6-Bank of 3.3V SDRAM Supports Memory Bus up to 133 MHz System Memory Size up to 1.5 GB Up to 512MB per Row Supports 16Mb, 64Mb, 128Mb, 256Mb, 512Mb SDRAM Technology Suspend-to-RAM (STR) Relocatable System Management Memory Region Programmable Buffer Strength for CS#, DQM[7:0], WE#, RAS#, CAS#, CKE, MA[14:0] and MD[63:0] Shadow RAM Size from 640KB to 1MB in 16KB increments Two Programmable PCI Hole Areas Integrated A.G.P.
PAGE 9
7521Plus / N N/B MAINTENANCE Integrated Host-to-PCI Bridge Zero Wait State Burst Cycles CPU-to-PCI Pipeline Access 256B to 4KB PCI Burst Length for PCI Masters PCI Master Initiated Graphical Texture Write Cycles Re-mapping Reassembles PCI Burst Data Size into Optimized Block Size Fast PCI IDE Master/Slave Controller Supports PCI Bus Mastering Native Mode and Compatibility Mode PIO Mode 0, 1, 2, 3, 4 Multiword DMA Mode 0, 1, 2 Ultra DMA 33/66/100 Two Independent IDE Channels Each with 16 DW FIFO Virtual PCI-
PAGE 10
7521Plus / N N/B MAINTENANCE 32-Bit VLIW Floating-Point Primitive Setup Engine Supports Flat and Gouraud Shading Supports High Quality Dithering Supports Bump Mapping Supports Z-Test, Stencil Test, Alpha Test and Scissors Clipping Test Supports Z Pre-Test for Reducing Texture Read DRAM Bandwidth Supports Individual Z-Buffer and Render Buffer at the Same Time Supports 16/24/32 BPP Z Buffer Integer/Floating Formats Supports 16/32 BPP Render Buffer Format Supports 1/2/4/8 Stencil Format Supports Per-Pixel Text
PAGE 11
7521Plus / N N/B MAINTENANCE Internal Full 32 Bits ARGB Format Ultra Pipelined Architecture for Ultra High Performance and High Rendering Quality 128-Bit 2D Engine with a Full Instruction Set Built-In 64x64x2 Bit-Mapped Hardware Cursor Built-In 32x32x16, 32x32x32 Bit-Mapped Color Hardware Cursor Maximum 64 MB Frame Buffer with Linear Addressing MPEG-2 ISO/IEC 13818-2 MP@ML and MPEG-1 ISO/IEC 11172-2 Standards Compliant Supports Hardware DVD Accelerator Direct DVD to TV Playback Supports Single Frame Buffer
PAGE 12
7521Plus / N N/B MAINTENANCE Built-in Programmable 24-bit True-Color RAMDAC up to 270 MHz Pixel Clock RAMDAC Snoop Function Built-in Reference Voltage Generator and Monitor Sense Circuit Supports Down-Loadable RAMDAC for Gamma Correction in High Color and True Color Mode Built-in Dual-Clock Generator Supports Multiple Adapters and Multiple Monitors Built-in PCI Multimedia Interface Supports Digital Flat Panel Port for Digital Monitor (LCD Panel) Built-in VESA Plug and Display for CH7003, PanelLink TM and LV
PAGE 13
7521Plus / N N/B MAINTENANCE Low Pin Count Interface Forwards PCI I/O and Memory Cycles into LPC bus Translates 8/16 bit DMA cycles into PCI bus cycles Advanced PCI H/W Audio & Modem Advanced Power Management Meets ACPI 1.0 Requirements Meets APM 1.
PAGE 14
7521Plus / N N/B MAINTENANCE Integrated Interrupt Controller Two 8237A Compatible DMA Controller Two 8259A Compatible Interrupt Controllers Level or Edge Triggered programmable Serial IRQ Interrupt Source Re-routable to Any IRQ channel Three 8254 Compatible Programmable 16-bits counters System timer interrupt Generate refresh request Speaker output Integrated Keyboard Controller Hardwired Logic Provides Instant Response Supports PS/2 Mouse Interface Password Security and Password Power-Up System Sleep and P
PAGE 15
7521Plus / N N/B MAINTENANCE Universal Serial Bus Host Controller Open HCI Host Controller with Root Hub Two USB Host Controllers Six USB Ports Supports Legacy Devices Over Current Detection I²C Bus/SMBus Series Interface Integrated Fast Ethernet Controller and MAC Interface Plug and Play Compatible High-Performance 32-Bit PCI Bus Master Architecture with Integrated Direct Memory Access (DMA) Controller for Low CPU and Bus Utilization Supports an Unlimited PCI Burst Length Supports Big Endian and Little End
PAGE 16
7521Plus / N N/B MAINTENANCE 1.2.5 Super IO: NS PC 97338VJG High speed PC16550A compatible UART with receive/transmit 16 Bytes FIFO programmable serial baud rate generator Multi-mode parallel port support including standard port, EPP/ECP (IEEE1284 compliant, 2 interrupt pins) Plug and Play module FDC, 100% IBM compatible, S/W & register compatible to 82077 with 16Bytes data FIFO Support 3-Mode FDD FIR/MIR/SIR/SHARP ASK for Infrared application. COM2 IrDA 1.0/ IrDA 1.1/ SHARP ASK Baud rate: max.
PAGE 17
7521Plus / N N/B MAINTENANCE 1.2.6 PC CARD interface controller : TI1225 ACPI 1.0 Compliance PCI Power Management interface specification 1.0 Compliance Supports distributed DMA (DDMA) and PC/PCI DMA Advanced submicron, low-power CMOS technology. Supports two I/O windows and two memory windows available to each cardbus socket. Supports five PCI memory windows and two I/O windows available to each PC CARD16 socket.
PAGE 18
7521Plus / N N/B MAINTENANCE Provides zoom video port function in socket B. 208-Pin LQFP package 1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH : TPS2206 Fully Integrated VCC and V pp Switching for Dual-Slot PC Card Interface I2C 3-Lead Serial Interface Compatible With CardBus Controllers 3.
PAGE 19
7521Plus / N N/B MAINTENANCE 16-bit free-running timer One 16-bit free-running counter Two output-compare lines Four input capture lines 8-bit timer (2 channels) Each channel has one 8-bit up-counter, two time constant registers PWM timer (2 channels) Resolution: 1/250 Duty cycle can be set from 0 to 100% I²C bus interface (one channel) Include single master mode and slave mode Host interface (HIF) 8-bit host interface port Three host interrupt requests (HIRQ1, 11,12) Regular and fast A20 gate output Keyboa
PAGE 20
7521Plus / N N/B MAINTENANCE Interrupts Nine external interrupt lines: NMI#, IRQ0 to 7# 26 on-chip interrupt sources Power-down modes Sleep mode Software standby mode Hardware standby mode A single chip microcomputer On-chip flash memory Maximum 64-kbyte address space Support three PS/2 port for external keyboard, mouse and internal track pad.
PAGE 21
7521Plus / N N/B MAINTENANCE 1.2.9 System BIOS See software BIOS specification 1.2.9.1 System BIOS and Software Features Overview Including System BIOS, VGA BIOS, POST, APM, PnP, ACPI and PXE BIOS Support Shadow RAM BIOS Feature Support APM 1.2 Support ACPI V1.0B Support DMI 2.3 Support SMBIOS 2.2 Support Quite Boot Support Extended Int14H function 50H (IR type switching) Support Hot-Plug for PS/2 keyboard and pointing devices.
PAGE 22
7521Plus / N N/B MAINTENANCE 1.2.9.2 BIOS Setup Feature Introduction Setup Utility allows you to enter the system configuration information. This information is needed by the system to identify the type of device installed and to setup special features. Typical configuration information includes the data and time, the type of disk drives, and the amount of memory; special features include Security and Power Saving.
PAGE 23
7521Plus / N N/B MAINTENANCE 1.2.10 POWER MANAGEMENT ACPI Introdution The system BIOS is conform with ACPI1.0B specification. Concept ACPI (Advanced Configuration and Power Interface) replaces APM and PnP functionality, it’s a Operating-System controlled Power Management and a subset of OnNow system. The general behavior of a PC with OnNow is as follows: Minimized or eliminated Startup and shutdown delays. Both hardware and software can be made to trigger wake-up events.
PAGE 24
7521Plus / N N/B MAINTENANCE Summary of Device Power Sates Device State D0 – Fully On Power Consumption Device Context Retained Driver Restoration As needed for operation All None D1 D0>D1>D2>D3 >D2 D1>D2>D3 D1 0 None Full init and load D3 – Off System States 1. Working (S0) System is fully usable. User can enter working state from S4 or S5 by pressing the power button or wake up from sleeping state. 2.
PAGE 25
7521Plus / N N/B MAINTENANCE Events that can bring the platform back to Working state : •. Pressing any key on the keyboard. •. Wake on LAN. •. Modem answering call. •. Pressing the power button less than 4 seconds. 3.Hibernation (S4) The S4 sleeping state is lowest power, longest wake-up latency sleeping state supported by ACPI. The platform context is maintained. For entering this state, users have to check “ Enable Hibernate ” in “ Power Management “of control panel.
PAGE 26
7521Plus / N N/B MAINTENANCE 5.Mechanical Off No power supplied and consumption, achieved by unplugging the machine and removing the battery. By definition, unit will return to Soft Off (S5) by restoration of power. If previous mode was Hibernation (S4), then system returns to S4.
PAGE 27
7521Plus / N N/B MAINTENANCE APM Concept This platform supports Advanced Power Management (APM1.2) developed by Microsoft and Intel. APM consists of one or more layers of software that support power management in computers with power manageable hardware. Power State 1.Full Power Default mode. System activity detected. This is the normal state of the system. If system power management is disabled, the system remains in this state until the power is turned off. 2.
PAGE 28
7521Plus / N N/B MAINTENANCE 4.Suspend System in not working and in a low power consumption state with maximum power savings . Most power managed devices are not powered. Includes stopping the CPU clock and shutting down all peripherals. Detection restores full power state. System takes a relatively long time to return to full on mode. Operational parameters are saved to be restored later when resuming. This state is attained by: • Triggered by the timeout timer of the suspend timer.
PAGE 29
7521Plus / N N/B MAINTENANCE 5. Off System is not working, the power supply is off. Operational parameters are not saved. System resets and initializes when transitioning to the Full on State.
PAGE 30
7521Plus / N N/B MAINTENANCE 1.2.11 Memory System HYUNDAI SDRAM cell on board13 One chip memory size : 4Banksx1Mx16bit SDRAM. Standard 54-pin TSOP-II package. Power supply : 3 ±0.3V Supports One JEDEC 144-pin SO-DIMM sockets on Mother Board for expansion Supports 3.3V SDRAM 2 banks on one socket. SDRAM accesses time from clock: 6ns Memory bus bandwidth: 64 bits 7521 plus Supports 64 MB SDRAM on board and one 144-pin DIMM socket for upgrading up to 320 MB of DRAM.
PAGE 31
7521Plus / N N/B MAINTENANCE 1.2.12 Interface Power Supply Jack. One Standard Parallel Port With ECP/EPP Functions Supports Two USB port for all USB devices. Supports Macrovision’s TV-OUT connector. Tunable volume by variable resistor. Two Serial Ports, One For COM1/COM2, The Other For FIR/MIR/SIR/SHARP ASK. One External CRT Connector For CRT Display. One PS/2 Interface For External KB, Mouse Or Other Devices. Two Cardbus Sockets. Cable For Connection Between M/B And Panel.
PAGE 32
7521Plus / N N/B MAINTENANCE 1.2.13 Audio System: AC’97 CODEC CS4299 AC’97 CODEC CS4299 provides a complete high quality audio solution, Feature Include : MPU-401 interface FM synthesizer Game Port MIDI port. MODEM CD-ROM Volume Control: Rotary VR Stereo BTL 2x1 W amplifiers (TPA0202) with 8-Ohm Load. CD-ROM IDE interface. 18-bit stereo ADC & 20-bit stereo DAC for record and play back. Programmable sample rates from 20Hz to 20kHz for record and playback.
PAGE 33
7521Plus / N N/B MAINTENANCE 1.2.14 IR MODULE: HSDL-3600#007 Fully Compliant to IrDA 1.1 Specifications 115.2 kb/s to 4 Mb/s operation Excellent nose-to-nose operation Compatible with ASK, HP-SIR, and TV Remote IEC825-Class 1 Eye Safe Wide Operating Voltage Range 2.7 V to 5.25 V Small Module Size 4.0 x 12.2 x 5.
PAGE 34
7521Plus / N N/B MAINTENANCE 1.2.15 SiS900 Fast Ethernet PCI Bus 10/100Mbps LAN Single Chip with OnNow Support SiS900 is a single chip 10/100Mbps Fast Ethernet LAN solution, which fully integrates both the Media Access Controller (MAC) with PCI bus master interface and 802.3u compliant 10/100Mbps physical layer interface into a 128 pins PQFP, 0.35um process chip. It is targeted at low-cost, low-power, high volume desktop PC motherboards, mobile PC module, adapter cards, and embedded systems.
PAGE 35
7521Plus / N N/B MAINTENANCE SiS900 Features Integrated Fast Ethernet controller and 10/100 megabit per second (Mbps) Physical Layer Transceivers for the PCI local bus PCI specification revision 2.1 compliant 32-bit glueless PCI host interface Plug and Play compatible Supports PCI clock frequency from DC to 33 MHz independent of network clock Supports network operation with PCI clock from 25Mhz to 33Mhz Supports both +3.
PAGE 36
7521Plus / N N/B MAINTENANCE Power down of 10Base-T/100Base-TX sections when not in use Jabber control and auto-polarity correction for 10Base-T. User programmable LED function mapping Supports software, enhanced software, and automatic polling schemes to internal PHY status monitor and interrupt Supports 10BASE-T, 100BASE-TX, and any future Supports PC97, PC98, and Net PC requirements - Green PC compatible Supports Advanced Configuration and Power Interface Specification (ACPI) Revision 1.
PAGE 37
7521Plus / N N/B MAINTENANCE 1.2.16 CH7005C Digital PC to TV Encoder The Chrontel’s CH7005 digital PC to TV encoder is a standalone integrated circuit which provides a PC 99 compliant solution for TV output. It provides a universal digital input port to accept a pixel data stream from a compatible VGA controller (or equivalent) and converts this directly into NTSC or PAL TV format.
PAGE 38
7521Plus / N N/B MAINTENANCE 1.3 Special Feature Function 1.3.1 Hot Key Function 1.3.
PAGE 39
7521Plus / N N/B MAINTENANCE 1.3.3 Flash ROM (BIOS) 7521 plus system utilizes the state-of-the-art Flash EEPROM technology. User can upgrade the system BIOS in the future just running the program from MiTAC. 1.3.
PAGE 40
7521Plus / N N/B MAINTENANCE 1.3.5 COM port assignment COM1 : MODEM / RS-232 / Disable COM2 : IR / RS-232 / Disable 1.4 SMM and System BIOS System Management Mode 7521 plus system has built in several power saving modes to prolong the battery usage for mobile purpose. User can enable and configure different degrees of power management modes via ROM CMOS setup (booting by pressing F2 key). Following are the descriptions of the SMM and power management modes supported.
PAGE 41
7521Plus / N N/B MAINTENANCE Suspend to DRAM: • CPU : off • SiS630 : Partial off • VGA : Suspend • PCMCIA : Suspend • Super IO : off • Audio : off • SDRAM: Self Refresh. Suspend to HDD: • All devices are stopped clock and power-down, • System status is saved in HDD. • All system status will be restored when powered on again. Other power management functions HDD & Video access System has the ability to monitor video and hard disk activity.
PAGE 42
7521Plus / N N/B MAINTENANCE Cover Switch System automatically provides power saving on monitoring Cover Switch. It will save battery power and prolong the usage time when user closes the notebook cover unintentionally but the system still in power on mode. There are two functions to be chosen. 1. Switch to CRT 2. Panel Off 3. Suspend to DRAM or Suspend to Disk by CMOS setup Battery Warning State 7521 plus system provides battery management function and gives warning while battery is in its low power state.
PAGE 43
7521Plus / N N/B MAINTENANCE 1.5 Peripheral Components LCD Panel Hyundai 14X13 1024X768 XGA TFT Panel Display size (diagonal): 14.1 inch 262,144 colors display 1 channel LVDS Interface (Flat Link, Ti) Display Mode: Normal White Back-light unit: CCFL, 1 tube DC for Panel: 3.3V+-0.3V Pixel pitch: 0.279(H) X0.279 (V) Power supply current: 320 mA (Typ) Lamp start Voltage : 1500Vrms (25 ℃) Hard Disk Drive FUJITSU MHK2120AT: 12 GB Capacity 12.
PAGE 44
7521Plus / N N/B MAINTENANCE Rotational Speed: 4,200 rpm +-1% Average Latency: 7.14 ms Interface: ATA-5 (Max. Cable length: 0.46 m) Data transfer rate: To/From Media: 12.5 to 22.3 MB/s To/From Host: 66.6 MB/s Max (Ultra-DMA mode 4) Data Buffer Size: 512 KB Spin up current: 0.9Arms Max. Power Consumption: 4.5W (During spin up) Physical Dimensions (H X W X D): 9.5 mm X 100.0 mm X 70.0 mm 15GB, 20GB, 24GB HDD To Be Defined.
PAGE 45
7521Plus / N N/B MAINTENANCE Touch Pad Logic Tech: 904255-0002 Vcc: 5V +- 0.5 Icc (max): 15 mA Interface: PS/2 X/Y position resolution: 480+-50 CPI Dimension: 66mm x 50mm x 5.0mm Effective area: 55mm x 39 mm Operating Temp. : 0 - 50 degree C Storage humidity: 5 - 90 %, Storage Temp.
PAGE 46
7521Plus / N N/B MAINTENANCE XM-1802B: Average data transfer rate of 3,600 KB/s Average random seek time of 100ms Random access time of 110ms. Small size (only 12.7(H) x 128(W) x 129(D) mm) Extremely low weight of 230g Low average power consumption of 2.4W (maximum only 3.2W). DVD-ROM drive MATSUSHITA: UJDA520L-SH 4X speed Fast 170 ms Random Access Time (DVD) Max. 4X (DVD)/Max. 24X (CD) Max. 5,408 Kbytes/s (DVD)/Max. 3,600 Kbytes/s (CD) Sustained Transfer Rate. PIO mode-4 ATAPI Drive (16.
PAGE 47
7521Plus / N N/B MAINTENANCE LED Indicators Lower ICON LEDs on M/B Mail Received status (left 1) AC POWER (left2) BATTERY POWER (right 2) BATTERY STATUS (right 1) Upper ICON LEDs on M/B CD-ROM/MO (left 1) HARD DISK DRIVE (left 2) FLOPPY DISK DRIVE (left 3) NUM LOCK (right 3) CAPS LOCK (right 2) SCROLL LOCK (right 1) IO port HP HSDL-3600#007 FIR Module Meet IrDA Physical Layer Specification 1 cm to 1 Meter Operating Distance 30 degree Viewing Angle Support Two Channels - 2.4 Kb/s to 115.2Kb/s and 1.
PAGE 48
7521Plus / N N/B MAINTENANCE Serial Interface Using ADM3311ARU chip ESD rating: ±3KV Lead TEMP. (Soldering 10sec): +300 ℃ Number of RS-232 drivers: 3 Number of RS-232 receivers: 5 28 pin SSOP package Support shutdown mode (pin 23). -40 ℃ - +85 ℃ operating TEMP. range Operating voltage range : 3V ±0.3V MAX. data rate: 460 kbps Shutdown supply current: 15(TYP) uA- 50(MAX) uA PCMCIA Socket Operating temperature range: -55 ℃- +85 ℃ Insertion force: 39.
PAGE 49
7521Plus / N N/B MAINTENANCE FAN Dimension: (25mmx25mmx10mm)±0.5mm Made by Sunonwealth Electric Machine Industry Co. Ltd. Model number: KD0502PEB2-8 DC brushless fan Operating speed: 8000 rpm. Input voltage: 5V Operating temperature: -10 - +70 degree C. Weight: 7g Direction of rotation: C.C.W. Noise level: 27 dB (A) Rated power: 0.6 W Static pressure: 0.09 inch-H2O Air delivery: 2.
PAGE 50
7521Plus / N N/B MAINTENANCE 1.
PAGE 51
7521Plus / N N/B MAINTENANCE Note 1. LCD ID LCD_SW4 LCD_SW3 LCD_SW2 LCD_SW1 Vendor PANEL Description 0 0 0 0 HannStar HSD141PX11 14.1” 0 0 0 1 Unipac UP141X01-2 14.1” 0 0 1 0 Hyundai 14X13-101 14.1” 1 0 0 0 Hyundai HT15X31 15” 1 0 0 1 Hitachi TX38D85VC1CAA 15” Note 3.
PAGE 52
7521Plus / N N/B MAINTENANCE 2 System View and Disassembly 2.0 Tools introduction 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly. 3mm 2. Auto screw driver for system assembly & disassembly. Bit Size #0 #1 5mm Screw Size Tooling Tor. Bit Size 1. M2.0 Auto-Screw driver 2.5-3.0 kg/cm2 #0 2. M2.6 Auto-Screw driver 3.0-3.5kg/cm2 #1 3. M3.0 Auto-Screw driver 3.0-3.5kg/cm2 #1 4. Standoff 4mm Auto-Screw driver 2.5-3.
PAGE 53
7521Plus / N N/B MAINTENANCE 2 System View and Disassembly 2.1 System View 2.1.1 Front View n Mail-Received Button/Indicator o Power Indicators p Top Cover Latch 2.1.
PAGE 54
7521Plus / N N/B MAINTENANCE 2.1.3 Right-Side View n Battery Pack o CD-ROM/DVD-ROM Drive p IR Port 2.1.
PAGE 55
7521Plus / N N/B MAINTENANCE 2.1.5 Bottom View n o p q CPU Cover Modem Card Cover FDD/HDD Module Battery Pack 2.1.
PAGE 56
7521Plus / N N/B MAINTENANCE 2.2 System Disassembly The section discusses at length each major component for disassembly/reassembly and show corresponding illustrations. Use the chart below to determine the disassembly sequence for removing components from the notebook. NOTE: Before you start to install/replace these modules, disconnect all peripheral devices and make sure the notebook is not turned on or connected to AC power. 2.2.1 Battery Pack 2.2.2 CPU Modular Components 2.2.3 Modem Card 2.2.
PAGE 57
7521Plus / N N/B MAINTENANCE 2.2.1 Battery Pack Disassembly 1. Carefully put the notebook upside down. 2. Turn the locking button to the "unlock” ( ) position (n), then slide and hold the latch in the unlock position and pull the battery pack out of the compartment (o).(figure 2-1) Figure 2-1 Reassembly 1. Push the battery pack into the compartment. The battery pack should be correctly connected when you hear a clicking sound. 2. Turn the locking button to the "lock” ( ) position.
PAGE 58
7521Plus / N N/B MAINTENANCE 2.2.2 CPU Disassembly 1. Carefully put the notebook upside down. 2. Remove two screws locking the CPU compartment cover, and then lift the cover up. (figure 2-2) Figure 2-2 Figure 2-3 3. Remove four screws fastening the heatsink and disconnect the fan’s power cord to free the heatsink from the CPU module.
PAGE 59
7521Plus / N N/B MAINTENANCE 4. Insert a minus screwdriver 101 (JIS standard) into the “OPEN” hole of the socket, and push the screwdriver toward the CPU to free the CPU. Now you can take out the CPU from the socket. (figure 2-4) Figure 2-4 Reassembly 1. Align the arrowhead corner of the CPU with the beveled corner of the socket, and insert the CPU pins into the holes. Insert the flat screwdriver into the “CLOSE” hole of the socket, and push the screwdriver toward the CPU to secure the CPU in place. 2.
PAGE 60
7521Plus / N N/B MAINTENANCE 2.2.3 Modem Card Disassembly 1. Carefully put the notebook upside down. 2. Remove one screw locking the modem card compartment cover, and then lift the cover up. (figure 2-5) Figure 2-5 Figure 2-6 3. Remove one screw fastening the connector board and the grounding cable.
PAGE 61
7521Plus / N N/B MAINTENANCE 4. Slightly lift up the connector board, and then remove one screw fastening the modem card. Now you can take out the modem card from the compartment. (figure 2-7) Figure 2-7 Reassembly 1. Reconnect the modem card into the system board and secure with two screws. 2. Hold the connector board an angle so that the phone line connector is pointed towards the opening on the notebook.
PAGE 62
7521Plus / N N/B MAINTENANCE 2.2.4 FDD/HDD Module Disassembly 1. Carefully put the notebook upside down. 2. Remove one screw and slide the FDD/HDD module out of the compartment.
PAGE 63
7521Plus / N N/B MAINTENANCE 3. To take the hard disk drive apart, remove two screws of the hard disk. Then lift the hard disk up and unplug the connector to remove it. (figure 2-9) Figure 2-9 Figure 2-10 4. Remove four screws to separate the hard disk drive from the metal shield. (figure 2-10) Reassembly 1. To install the hard disk drive, place it in the bracket and secure with four screws. 2. Connect the hard disk to the connector on the FDD/HDD module and secure with two screws. 3.
PAGE 64
7521Plus / N N/B MAINTENANCE 2.2.5 CD-ROM Drive Disassembly 1. Carefully put the notebook upside down. 2. Remove the battery pack. (See section 2.2.1 Disassembly.) 3. Remove the modem card. (See section 2.2.3 Disassembly.) 4. Remove the FDD/HDD module. (See step 2 in section 2.2.4 Disassembly.) 5. Remove one screw locking the CD-ROM (n), and then the other twelve screws locking the base unit frame. (figure 2-11) Now you can lift the base unit frame up.
PAGE 65
7521Plus / N N/B MAINTENANCE 6. Hold the CD-ROM drive and slide it outward carefully. (figure 2-12). Figure 2-12 Reassembly 1. Push the CD-ROM drive into the compartment. 2. Replace the base unit frame and secure with thirteen screws (includes one locking the CD-ROM drive). 3. Replace the FDD/HDD module. (See section 2.2.4 Reassembly.) 4. Replace the modem card. (See section 2.2.3 Reassembly.) 5. Replace the modem card. (See section 2.2.3 Reassembly.) 6. Replace the battery pack. (See section 2.2.
PAGE 66
7521Plus / N N/B MAINTENANCE 2.2.6 Keyboard Disassembly 1. Open the top cover. 2. Press the locking latch downward to unlatch the Easy Start panel (n) , push it leftward and lift it up from the left side (o). (figure 2-13) Figure 2-13 Figure 2-14 3. Slightly lift up the keyboard and disconnect the cable from the system board to detach the keyboard. Reassembly 1. Reconnect the keyboard cable and fit the keyboard back into place. 2. Replace the Easy Start panel.
PAGE 67
7521Plus / N N/B MAINTENANCE 2.2.7 SO-DIMM Disassembly 1. Remove the keyboard to access the SO-DIMM sockets. (See section 2.2.6 Disassembly.) 2. Pull the retaining clips outwards (n) and remove the SO-DIMM (o). (figure 2-15) Figure 2-15 Reassembly 1. To install the SO-DIMM, match the SO-DIMM's notched part with the socket's projected part and firmly insert the SO-DIMM into the socket at 20-degree angle. Then push down until the retaining clips lock the SO-DIMM into position. 2.
PAGE 68
7521Plus / N N/B MAINTENANCE 2.2.8 LCD Assembly Disassembly 1. Open the top cover and remove the Easy Start panel. (See steps 1 to 2 in section 2.2.6 Disassembly.) 2. Remove the two hinge covers by inserting a flat screwdriver to the rear of the cover and pry the cover out. (figure 2-16) Figure 2-16 Figure 2-17 3. Open the top cover. Unplug the three cable connectors coming from the LCD assembly, and remove four screws of the hinges. Now you can separate the LCD assembly from the base unit.
PAGE 69
7521Plus / N N/B MAINTENANCE Reassembly 1. Attach the LCD assembly to the base unit and secure with four screws on the hinges. 2. Reconnect the LCD cable connectors to the system board. 3. Replace the two hinge covers. 4. Replace the Easy Start panel.
PAGE 70
7521Plus / N N/B MAINTENANCE 2.2.9 LCD Panel Disassembly 1. Remove the LCD assembly. (See section 2.2.8 Disassembly.) 2. Remove the two rubber pads and two screws on the lower part of the panel. (figure 2-18) Figure 2-18 Figure 2-19 3. Insert a flat screwdriver to the lower part of the frame and gently pry the frame out. Repeat the process until the frame is completely separated from the housing. 4. Remove the four screws on the two sides of the LCD panel, and unplug the cable from the inverter board.
PAGE 71
7521Plus / N N/B MAINTENANCE 2.2.10 Inverter Board Disassembly 1. Remove the LCD assembly and detach the LCD frame (see instructions in previous two sections). 2. To remove the inverter board at the bottom side of the LCD assembly, unplug the cable and remove the two screws. (figure 2-20) Figure 2-20 Reassembly 1. Fit the inverter board back into place and secure with two screws. 2. Reconnect the cables. 3. Replace the LCD frame. (See section 2.2.9 Reassembly.) 4. Replace the LCD assembly. (See section 2.
PAGE 72
7521Plus / N N/B MAINTENANCE 2.2.11 System Board Disassembly 1. Remove the Keyboard. (See section 2.2.6 Disassembly.) 2. Remove the LCD assembly. (See section 2.2.8 Disassembly.) 3. Remove seven screws, and then take out the Easy Start board. (figure 2-21) Figure 2-21 Figure 2-22 4. Remove four screws on the rear side of the notebook. (figure 2-22) 5. Remove the battery pack, heatsink, modem card, FDD/HDD module, and CD-ROM drive. (See section 2.2.1 to 2.2.5 Disassembly.
PAGE 73
7521Plus / N N/B MAINTENANCE 6. Remove six screws and two hexnut screws fastening the metal shield, and then lift the shield up from the system board carefully. (figure 2-23) Figure 2-23 Figure 2-24 7. Lift up the speaker assembly and disconnect the cable.
PAGE 74
7521Plus / N N/B MAINTENANCE 8. Remove four screws to take the recharge board apart. (figure 2-25) Figure 2-25 Figure 2-26 9. Remove two screws fastening the system board and disconnect the cable of the touchpad. Now you can lift the system board up from the base unit. (figure 2-26) Reassembly 1. Fit the system board into place and secure with two screws. 2. Reconnect the touchpad’s cable. 3. Replace the metal shield and secure with six screws and two hexnut screws. 4.
PAGE 75
21Plus / N N/B MAINTENANCE 6. Replace the base unit frame and secure with twelve screws. 7. Replace the battery pack, heatsink, modem card, FDD/HDD module, and CD-ROM drive. 8. Secure the four screws on the rear side of the notebook. 9. Put the notebook back to the upright position. Replace the Easy Start board into the housing, then secure with seven screws. 10. Replace the LCD assembly. 11. Replace the keyboard and Easy Start panel.
PAGE 76
7521Plus / N N/B MAINTENANCE 2.2.12 Touchpad Disassembly 1. Remove the system board. (See section 2.2.11 Disassembly.) 2. Remove the four screws to lift up the touchpad holder and touchpad panel. (figure 2-27) Figure 2-27 Reassembly 1. Replace the touchpad holder and touchpad panel, and secure with four screws. 2. Replace the system board and assemble the notebook. (See section 2.2.11 Reassembly.
PAGE 77
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.1 Mother Board-A J2 J4 SW2 J5 SW1 J3 J1 SW3 J6 SW4 J1: Inverter BD CONN. J6: 144 pins expansion SDRAM SO-DIMM socket. J2: LCD panel LVDS connector. SW1: Cover Suspend Switch. J3: ESB Board connector. SW2: Power button. J4: External MIC-in connector. SW3 : CPU FSB Select. J5: Internal keyboard connector. SW4 : LCD Panel ID Select.
PAGE 78
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.2 Mother Board Switch Table SW3. CPU & SDRAM Frequency setting table: SW_FS3 SW_FS2 SW_FS1 SW_FS0 CPU SDRAM 0 0 0 0 66 100 0 0 0 1 100 100 0 0 1 1 133 100 0 1 0 0 66 133 0 1 0 1 100 133 0 1 1 1 133 133 1 0 0 0 66 66 SW1 SW2 SW3 SW4 SW4. LCD Panel ID Select LCD_SW4 LCD_SW3 LCD_SW2 LCD_SW1 Vendor PANEL Description 0 0 0 0 HannStar HSD141PX11 14.
PAGE 79
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.3 Mother Board-B PJ501 J502 J508 J505 J507 J506 J504 J501 J503 U501 U502 J509 BT501 J510 J511 U503 VR501 J506 J512 J513 J514 J516 J515 PJ501: Power jack ( AC adapter). J507: VGA Connector. J516 :HDD/FDD Connector. J502 : PS2 Mouse/keyboard. J508: USB connector. J512: CD-ROM drive connector. J503: Line in Jack. J509: Phone Jack Connector. J514: Charger & Touch-Pad connector. J504: RJ45 LAN connect.
PAGE 80
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.4 Daughter Board MDC/LAN transfer board J23 J1 J1: RJ-11 phone jack for internal modem. J23: MDC jump wire connector. JP1 U2 U1 JP3 JP1: MDC jump wire connector. JP3: Connector 2 for connected MDC/LAN transfer board to M/B.
PAGE 81
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.5 Charger Board Charge board(side B) Charge board(side A) J1 PJ4 J2 SW500 J500 J1:Charger & Touch-Pad connector to M/B. J500: Touch-Pad button connector. PJ4:Battery pack connector. SW500: CMOS Reset J2: Internal speaker connector.
PAGE 82
7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.6 IQSB Board 3.7 Easy Start Button Board Easy Start Button Board(side A) IQSB board(side A) SW1 D8 SW2 SW1 SW2 SW3 SW4 SW5 SW3 Easy Start Button Board(side B) IQSB board(side B) J501 J500 SW1: Touch Pad Left Key. J501: Easy Start Button Board to MB Connector . SW2: Touch Pad Left Key. SW1,SW2,SW3,SW4,SW5,SW6: SW3: E-Mail Function key. Programmable Easy Start Button function key. D8: E-Mail Indicator LED.
PAGE 83
7521Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components 4.1 Main Board ( Side A ) U1 U2 PU2 U3 U6 U5 U33 U7 PU4 PU22 PU10 U9 U11 U16 U17 U15 U13 PU9 PU14 PU19,12,23 U14 PU5 PU18 U24 U21 U31 U27 U28 PU7 U18 U19 U22 U23 U25 U26 U29 U30 U1: ADM3311ARU RS232/SIO. U13: TPS2206 PCcard Power switch matrix. U31:W83626F LPC to ISA. U2: DS90C363MTD VGA LVD controller. U15: ICS9248-102 Frequency Synthesizer. U5: CS4299 AC’97 CODE. U24: SiS630S single chipset.
PAGE 84
7521Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components 4.2 Main Board ( SIDE B ) U502 BT501 U503 U505 U502: PH163112 LAN Controller. U503: Socket 370 CPU. U505: PCI1225PDV PC CARD interface controller.
PAGE 85
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal Reference Signal Name A[35:3]# A20M# ADS# AERR# AP[1:0]# BCLK I/O Signal Description I/O The A[35:3]# (Address) signals define a 2 36 -byte physical memory GTL+ address space. When ADS# is active, these signals transmit the address of a transaction; when ADS# is inactive, these signals transmit transaction information.
PAGE 86
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal Reference Signal Name BPRI# BREQ0# BSEL[1:0] CLKREF CMOSREF D[63:0]# I/O Signal Description I The BPRI# (Bus Priority Request) signal is used to arbitrate for GTL+ ownership of the system bus. It must be connected to the appropriate pins/balls on both agents on the system bus.
PAGE 87
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal Reference Signal Name GHI# HIT#, HITM# IERR# IGNNE# INIT# I/O Signal Description I The GHI# signal controls which operating mode bus ratio is selected 1.5V in a mobile Pentium III processor featuring Intel SpeedStep Tolerant technology.
PAGE 88
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal Reference Signal Name PICCLK PICD[1:0] PLL1, PLL2 PRDY# PREQ# PWRGOOD I/O Signal Description The PICCLK (APIC Clock) signal is an input clock to the processor and system logic or I/O APIC that is required for operation of the processor, system logic, and I/O APIC components on the APIC bus.
PAGE 89
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU PWRGOOD Relationship at Power On Signal Name RSP# RSVD RTTIMPEDP SLP# SMI# STPCLK# TCK I/O Signal Description I The RSP# (Response Parity) signal is driven by the response agent GTL+ (the agent responsible for completion of the current transaction) during assertion of RS[2:0]#. RSP# provides parity protection for RS[2:0]#.
PAGE 90
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU PWRGOOD Relationship at Power On Signal Name VID[4:0] I/O Signal Description O - The VID[4:0] (Voltage ID) pins/balls can be used to support Open- automatic selection of power supply voltages. These pins/balls are not drain signals, they are either an open circuit or a short to VSS on the processor substrate. The combination of opens and shorts encodes the voltage required by the processor.
PAGE 91
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset Host Bus Interface Name CPUCLK ADS# Tolerance 3.3V/5V 1.5V HREQ[4:0]# 1.5V BREQ0# 1.5V BNR# 1.5V HLOCK# 1.5V HIT# 1.5V HITM# 1.5V DEFER# 1.5V RS[2:0]# 1.5V HTRDY# 1.5V DRDY# 1.5V DBSY# 1.5V Power Type Description Plane Attr MAIN I Host Clock : MAIN I/O Address Strobe : Address Strobe is driven by CPU to GTL+ indicate the start of a CPU bus cycle.
PAGE 92
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset Host Bus Interface Name Tolerance INIT# 1.5V~5V A20M# 1.5V~5V Power Type Description Plane Attr MAIN OD Initialization : INIT is used to re-start the CPU without flushing its internal caches and registers. In Pentium II platform it is active high. This signal requires an external pull-up resistor tied to 3.3V.
PAGE 93
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset PCI Interface Name Tolerance STOP# 3.3V/5V DEVSEL# 3.3V/5V PLOCK# 3.3V/5V PREQ[2:0]# PGNT[2:0]# INT[A:D]# 3.3V/5V 3.3V 3.3V/5V PCIRST# SERR# 3.3V 3.3V/5V Power Type Description Plane Attr MAIN I/O Stop# : STOP# indicates that the bus master must start terminating its current PCI bus cycle at the next clock edge and release control of the PCI bus.
PAGE 94
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset VGA Interface Name VMA11 VGCLK Tolerance 3.3V VMA10 VBHCLK 3.3V VMD[63:60] VMD[59:52] VBRGB[7:0] VMD[51:49] VBRGB[18:16] VMD[48:44] VBRGB[19:23] VMD[43:42] VBRGB[10:11] VMD[41:40] VBRGB[9:8]] VMD[39:38] VBRGB[13:12] VMD[37:36] VBRGB[14:15] VMD35 VBBLANKN VMD[34:33] TVCTL[0:1] VMD32 VBCAD VMD31 VBHSYNC VMD30 VBVSYNC VMD29 DDC2CLK VMD28 DDC2DATA VMD[27:0] 3.3V 3.3V 3.3V 3.
PAGE 95
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset Power management Interface Name THERM# GPIO[6:4] Tolerance 3.3V/5V 3.3V/5V Power Plane MAIN AUX Type Description Attr I Thermal Detect : THERM# is connected to the internal ACPI-compatible power management unit as an indication of outstanding thermal event. An active THERM# event can be used to generate SCI/SMI#/GPEIRQ.
PAGE 96
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset Fast Ethernet and Homenetworking interface RTC Interface Name AUXOK Tolerance 1.8V Power Plane RTC BATOK 1.8V RTC OSC32KHI 1.8V RTC OSC32KHO <1.8V RTC PWROK 1.8V RTC Type Description Attr I Auxiliary Power OK : This signal is supplied from the power source of resume well. It is also used to reset the logic in resume power well.
PAGE 97
7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset USB interface Name Tolerance CLK48M 3.3V/5V Power Plane MAIN OC0# PCIREQ3# GPIO0 3.3V/5V MAIN OC1# PCIGNT3# GPIO1 3.3V/5V MAIN OC3# LDRQ1# GPIO2 3.3V/5V MAIN 3.3V 3.3V AUX AUX USBP[4:0]P USBP[4:0]N Type Attr I Description USB 48 MHz clock input : This signal provides the fundamental clock for the USB Controller.
PAGE 98
7521Plus / N N/B MAINTENANCE 6. System Block Diagram SH5 SH11 TV OUT S-VIDEO SH11 U2 J2 LCD PANEL ON BOARD SDRAM SH5 TMDS DS90C363 LVDS J6 CH7005C TV-Encoder J506 CRT J506 PCMCIA/ CARDBUS SLOTS J504 U24 SIS630S U505 SH14 SH15 PCMCIA / CARDBUS CONTROLLER TI1225 U13 TPS2216 Power Switch SH12 RJ45 HDD J516 CDROM J512 Line In SH16 Internal SPK.
PAGE 99
7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.1 Introduction Each time the computer is turned on, the system bios runs a series of internal checks on the hardware. This power-on self test (post) allows the computer to detect problems as early as the power-on stage. Error messages of post can alert you to the problems of your computer. If an error is detected during these tests, you will see an error message displayed on the screen.
PAGE 100
7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.2 Error Codes : Following is a list of error codes in sequent display on the PIO debug board. SYSTEM SOFT BIOS: CODE 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Fh 10h 11h 12h 13h 14h 15h 16h 18h 19h 1Ah 1Bh 1Ch DESCRIPTION Start of boot loader sequence. Initialize chipset. Memory Sizing. Perform conventional RAM(1st 640K) test with crossedpattern R/W Move boot loader to the RAM. Start point of execution of boot loader in RAM.
PAGE 101
7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.2 Error Codes : Following is a list of error codes in sequent display on the PIO debug board. SYSTEM SOFT BIOS: CODE 37h 38h 39h 3Ah 3Bh 3Ch 3Dh 3Eh 3Fh 40h 41h 42h 43h 44h 45h 46h 47h 48h 49h 4Ah DESCRIPTION Protected mode exit successful Update keyboard output port to disable gate of A20 Setup cache controller Test if 18.2Hz periodic working Initialize BIOS data area at 40:0.
PAGE 102
7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.3.1 Diagnostic Tools : LED * 8 PIO CONNECTOR * 1 P/N:411904800001 DESCRIPTION :PWA;PWA-378PORT DEBUG BD Note:Order it from MIC/TSSC 7.3.
PAGE 103
7521Plus / N N/B MAINTENANCE 8. TROUBLE SHOOTING 8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8.6 KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR 8.7 CD-ROM DRIVE TEST ERROR 8.8 HARD DRIVE TEST ERROR 8.9 USB PORT TEST ERROR 8.10 AUDIO FAILURE 8.11 SIO PORT TEST ERROR 8.12 PIO PORT TEST ERROR 8.
PAGE 104
7521Plus / N N/B MAINTENANCE 8.1 NO POWER: When the power button is pressed, nothing happens ,power indicator does not light up. 1. Check AC Adaptor. 2. Check OUTLET. 3.Check Charge B’D 22.5V 2.
PAGE 105
7521Plus / N N/B MAINTENANCE 8.1 NO POWER: When the power button is pressed, nothing happens ,power indicator does not light up. P25 PJ501 PL501, PF501 PD1 POWER IN PU2 P25 F2, U23 PWR_VDDIN P26 ADINP PD3, PD4, PL3 P23 VDD5 Q22 P23 +S5V Q21 P23 VDD5S P29 VMAIN P25 D/VMAIN PQ502 PQ503,PU10 PU10,PQ7,PQ9 PL503,PU501 P27 +S3V_P P27 PQ501 +S12V PL12,PU18,PU12,PU19, PU20,PU22,PU23,PL11 Note: P25 :Page 25 on circuit diagram. PU14,PU5 PD1, PD2, PL3 :Through by parts PD1,PD2,PL3.
PAGE 106
7521Plus / N N/B MAINTENANCE 8.1 NO POWER: Symptom: When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. PJ501 POWER IN PU2 SI4835DY PF501 PL501 120Z/100M 6.5A/32VDC PC2 0.1U PR15 470K PC509 0.1U PD501 RLZ24D PQ5 D G 2N7002 PD1 EC10QS041M PWR_VDDIN 3 2 1 S 8 7 6 5 D PR9 4.
PAGE 107
7521Plus / N N/B MAINTENANCE 8.1 NO POWER: Symptom: When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. No power Is the notebook power source O.K? (Either AC adapter or battery) No Board level troubleshooting for no power Connect AC adapter or battery BATTERY PACK WHERE FROM POWER SOURCE PROBLEM ? Yes Try another known good battery, charger board or AC adapter. Yes Power O.
PAGE 108
7521Plus / N N/B MAINTENANCE 8.1 NO POWER: Symptom: When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. CONTINUE 2. Check the power source from AC adapter. (PJ501) SIGNAL: ADINP LEARING PARTS: PL501 PC509 PR15 PR16 PF501 PD501 PR14 PD3 PU2 PR13 …….. PC2 If “D/VMAIN” failure. CHECK: PD3,PD4,PL3,PR20,PR21,PQ12, PU9,PR23,PC58,PC57……. If “VDD5” failure. CHECK : PD1,PD2,F2,U32,C247,Q22.... If “VCC_CORE” (CPUVCC) failure.
PAGE 109
7521Plus / N N/B MAINTENANCE 8.2 NO DISPLAY There is no display on both LCD and monitor NO DISPLAY Plug PIO debug board to PIO port and get the 378h error code. 1. Check if power system is O.K . 2. Remove all the I/O device from system. Reboot and display OK? YES NO Connect the I/O device & cables to the system one at a time to find out the faulty parts then replace and end. YES Refer to the error code description and find out the error.
PAGE 110
7521Plus / N N/B MAINTENANCE 8.2 NO DISPLAY ******System Clock Check ****** SH2 U503 SH3 CPU FC-PGA CPUCLK 630PCLK R93 APICCLK USB_48MHZ CLK14_VGA R84 HCLK_CPU 48 R83 SIS 630S R124 46 9 17 R91 25 R135 2 R131 32.
PAGE 111
7521Plus / N N/B MAINTENANCE 8.2 NO DISPLAY ******Power Good & Reset System ****** +2.5V +S12V +S5V_P +3V_P 1.5V 1.
PAGE 112
7521Plus / N N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCD.
PAGE 113
7521Plus / N N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCD. VGA CONTROLLER FAILURE 1. Confirm LCD panel or monitor is good and check the cable are connected properly. 2. Try another known good monitor or LCD module. YES Replace motherboard or into board-level Troubleshooting. Replace faulty LCD or monitor. Display OK? Remove all the I/O device & cable from motherboard except LCD panel or extended monitor. YES NO Re-soldering.
PAGE 114
7521Plus / N N/B MAINTENANCE 8.4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitor.
PAGE 115
7521Plus / N N/B MAINTENANCE 8.4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitor. VGA CONTROLLER FAILURE Replace motherboard or into board-level Troubleshooting. 1. Confirm monitor is good and check the cable are connected properly. 2. Try another known good monitor. YES Display OK? One of the following parts on the mother-board may be defective, use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement.
PAGE 116
7521Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROR Either on board or extend SDRAM is failure or system hangs up. SH8 U15 ICS9248-102 Clock Synthesizer RP20,RP22,RP23,RP25 RP41,RP44,RP54,RP53 MDR[0~63] R124 SH3 SDRAMCLK[2~3] SDRAMCLK[0~3] CKE[2,4] ON BOARD 64MB SDRAM SH10 U18,U22,U25,U29 U19,U23,U26,U30 MD[0~63] MAB#[0~14] DQMA#[0~7] SDCLK CS#[0~3] 630SDCLK RP40 CSA#[0~3] SRASA#,SCASA# CSA#[2,3] R162,R154 SMDATA, SMCLK WEA# U24 SIS 630S R163 +S3V R588 8.
PAGE 117
7521Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROR Either on board or extend SDRAM is failure or system hangs up. MEMORY TEST ERROR Board-level Troubleshooting for Memory test error. 1. Check if on board SDRAM chips are no cold solder. 2. Check the extend SDRAM module is installed properly. ( J6) 3. Confirm the SDRAM socket is ok, no band pins. YES Test OK? Correct it. NO Try another known good SDRAM modules. NO Test OK? YES Replace mother board or into board level Troubleshooting.
PAGE 118
7521Plus / N N/B MAINTENANCE 8.6 KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR Error message of keyboard failure is shown or any key doesn’t work.
PAGE 119
7521Plus / N N/B MAINTENANCE 8.6 KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR Error message of keyboard or touch pad failure is shown or any key doesn’t work. Board-level Troubleshooting for K/B or T/P test error. KEYBOARD TEST ERROR Check if K/B or T/P cable installed properly. Check if U14, J5, J515 and J502 are cold solder or not.
PAGE 120
7521Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERROR An error message is shown when reading data from CD-ROM drive.
PAGE 121
7521Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERROR An error message is shown when reading data from CD-ROM drive. CD-ROM DRIVE TEST ERROR Board-level Troubleshooting for CD-ROM drive test error. 1. Try another known good transfer board. 2. Try another known good compact disk. 3. Check if CD-ROM is installed properly( J512 ). YES Test OK? Correct it then end. NO Try another known good CD-ROM drive. YES Test OK? NO Replace M/B or into board-level Troubleshooting. Replace faulty parts then end.
PAGE 122
7521Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERROR Either an error message is shown , or the driver motor continues spinning , while reading data is from or writing data is to hard drive.
PAGE 123
7521Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERROR Either an error message is shown , or the driver motor continues spinning , while reading data is from or writing data is to hard drive. HARD DRIVE TEST ERROR. Board-level Troubleshooting for hard drive test error. Check if HDD’s cable installed to HDD and system properly (J516) YES Re-boot OK? Correct it then end. NO 1. Try another known good HDD. 2. Try another known good HDD’s Transulation cable.
PAGE 124
7521Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERROR An error occurs when a USB I/O device is installed.
PAGE 125
7521Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERROR An error occurs when a USB I/O device is installed. USB TEST ERROR Board-level Troubleshooting for USB test error 1. Check if the USB device is installed properly. 2. Confirm USB driver is installed ok. YES Test OK? Correct It. NO Try another known good USB device. Parts: YES Re-test OK? NO Change M/B or go into board-level Troubleshooting.
PAGE 126
7521Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. AUDIO IN R27 VA C39 L26 + C321 R50 D2 +12V J4 L13 L10 U4 ADP3301AR-5 + INTERNAL MIC1 SH16 J509 C59 + C48 R42 + R41 EXT MIC.
PAGE 127
7521Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. AUDIO OUT U31 SH18 W83626F R179 L51 R75 24.
PAGE 128
7521Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. Board-level Troubleshooting for audio test error. AUDIO DRIVE FAILURE 1. Check if speaker cables are connected properly. 2. Make sure all the drivers are installed properly. YES Test OK? NO 1.Try another known good speaker, CD-ROM. 2. Exchange another known good charger board. YES End.
PAGE 129
7521Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERROR An error occurs when a mouse or other I/O device is installed.
PAGE 130
7521Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERROR An error occurs when a mouse or other I/O device is installed. SIO TEST ERROR Board-level Troubleshooting for SIO test error. 1. Check if the mouse or others I/O device are installed (J507) properly. (Including driver) 2. Check if CMOS COM port setting correctly. YES Test OK? Correct it and end. NO Try another known good I/O device. YES Re-test OK? NO Change M/B or go into board-level Troubleshooting. Change the faulty part and end.
PAGE 131
7521Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERROR When a print command is issued, printer prints nothing or garbage.
PAGE 132
7521Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERROR When a print command is issued, printer prints nothing or garbage. PIO TEST ERROR Board-level Troubleshooting for PIO test error. 1. Check the PIO device is installed properly.(J505) 2. Confirm CMOS LPT port and extended mode setting properly. YES Test OK? Correct it and end. NO Try another known good PIO device. (Such as printer) YES Change the faulty device then end. Re-test OK? NO Replace M/B or go into board-level Troubleshooting.
PAGE 133
7521Plus / N N/B MAINTENANCE 8.13 PC-CARD SOCKET FAILURE An error occurs when a PC card device is installed.
PAGE 134
7521Plus / N N/B MAINTENANCE 8.13 PC-CARD SOCKET FAILURE An error occurs when a PC card device is installed. PC CARD TEST ERROR Board-level Troubleshooting for PC CARD test error 1. Check if the PC CARD device is installed properly. 2. Confirm Pc card driver is installed ok. YES Test OK? Correct It. NO Parts: Try another known Good PC card device. YES Re-test OK? NO Change M/B or go into board-level Troubleshooting.
PAGE 135
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-1 Part Number Description Location(s) Part Number Description Location(s) 442051200001 AC ADPT ASSY;19V/3.16A,DELTA 272073104501 CAP;.1U ,25V,+80-20%,0603,Y5V,SMT C525,C540,C549,C559,C5 541667000031 AK;1-EN,BOX,7521 MTC CTO 272075104701 CAP;.1U ,50V,+80-20%,0603,SMT C143,C149,C160,C165,C1 541667000001 AK;EN,7521-UTILITY ONLY 272072104402 CAP;.
PAGE 136
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-2 Part Number Description Location(s) Part Number Description Location(s) 272075222701 CAP;2200P,50V ,+/-20%,0603,X7R,SMT C107 291000010604 CON;HDR,FM,6P*1,1.25MM,ST,SMT J1 272075221302 CAP;220P ,50V ,5% ,0603,NPO,SMT C23,C31,PC76,PC77 291000012011 CON;HDR,MA,10P*2,1.0MM,ST,SMT J2 272075220701 CAP;22P ,50V ,+ -10%,0603,NPO,SMT C108,C128 331040060003 CON;HDR,MA,20P*3,.
PAGE 137
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-3 Part Number Description 272625470401 CP;47P*4 ,8P,50V ,10%,1206,NPO,SMT Location(s) CA501,CA502,CA7,CA8,C Part Number Description Location(s) 227670000002 END CAP;MANUAL,7521 227670000010 END CAP;W/CARRING BAG,7521 345669600062 CUSHION;CPU-1,RACE 291006214411 DIMM SOCKET;144P,.
PAGE 138
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-4 Part Number Description Location(s) Part Number Description Location(s) 345669600006 GASKET;IO-PS2,RACE 286303301001 IC;ADP3301AR-5,.8%,REG.,SO,8P U4 345669600013 GASKET;LAN,RACE 284507005001 IC;CH7005C,TV ENCODER,3/5V,PQFP,44P U7 345669600041 GASKET;LVDS,9X6X10,RACE 324180786043 IC;CPU,P-III,800MHZ,EB,FCPGA,370P 345669600043 GASKET;MIC,5X5X19,RACE 284504299001 IC;CS4299-JQ,AC97 CODEC,TQFP,48P U5 345669600042 GASKET;USB,10X15X0.
PAGE 139
7521Plus / N N/B MAINTENANCE 9.
PAGE 140
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-6 Part Number Description Location(s) Part Number Description Location(s) 412670000005 PWA;PWA-7521,CHARGER TRANS BD MTC 271071143701 RES;14K ,1/16W,0.
PAGE 141
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-7 Part Number Description Location(s) Part Number Description Location(s) 271071361101 RES;360 ,1/16W,1% ,0603,SMT R56 271071750101 RES;75 ,1/16W,1% ,0603,SMT R12,R13,R14,R15,R536,R 271071453111 RES;4.53K,1/16W,1% ,0603,SMT PR25 271071822301 RES;8.2K ,1/16W,5% ,0603,SMT R177,R588 271013478301 RES;4.7 ,1/4W,5% ,1206,SMT L31,R21,R24 271071909101 RES;9.09K,1/16W,1% ,0603,SMT PR41 271002472301 RES;4.
PAGE 142
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-8 Part Number Description Location(s) Part Number Description Location(s) 371102030301 SCREW;M2L3,FLT(+),NIB/NLK 370102010604 SPC-SCREW;M2L6,K-HD(+),NIW/NLK,HEAT 371102030303 SCREW;M2L3,K-HEAD(+),NIW/NLK 370103010405 SPC-SCREW;M3L4,NIW,K-HD,T0.
PAGE 143
7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-9 Part Number Description Location(s) 288202301001 TRANS;SI2301DS,P-MOSFET,SOT-23 PQ17,PQ501,Q21,Q22,Q5 288202302001 TRANS;SI2302DS,N-MOSFET,SOT-23 PQ10,PQ13 288204416001 TRANS;Si4416DY,N-MOSFET,.028OHM,SO8 PQ3,PQ502,PQ504,PQ7 288204435001 TRANS;SI4435DY,P-MOSFET,.035OHM,SO8 PQ22,PU2,PU9 288204832001 TRANS;SI4832DY,N-MOSFET,.028OHM,SO8 PQ503,9 288204920001 TRANS;SI4920DY,NCH-DUAL,5.
PAGE 144
PAGE 145
1 2 3 4 5 6 7 REV 8 DESCRIPTION OF CHANGE ECR R00 A 7521 plus R02 DATE APPROVAL 09/29/2000 R0B 1.Add 10K ohm pull high resistor between +3v and DS90363 pin 14. 2.Add frequency select resistor. 3.Add ESD solution on PCMCIA socket. 4.Change test pin resistor of SiS900 form 4.7K to 10K ohm. 5.Correct autoload pin of SiS900 power form +5V to +S5V. 6.Add 0 ohm pull high resistor between +S5V and EEPROM pin 6. 7.Modify Vcc_RTC circuit. 8.Modify Vmain_PWROK circuit. 9.Modify Vcc_CORE circuit. 10.
PAGE 146
A B C D PREQ# 24 PRDY# PRDY# 2 2 1 R525 470 0603B 1 VTT AD4 AA3 Z4 AK6 AA1 Y3 AF6 AB4 AB6 AE3 AJ1 AC3 AG3 Z6 AE1 AN7 AL5 AK14 AL7 AN5 AK10 AH6 AL9 AH10 AL15 AN9 AH8 AH12 AK8 A31 A30 A29 A28 A27 A26 A25 A24 A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 R536 75 0603 1% 1 AM4 AK34 AF34 AD32 AB34 Z32 AA37 X34 Y35 P34 V32 T34 R32 R36 M32 K34 H36 K32 H32 V36 B34 B30 B26 B22 B18 B14 B6 B10 F22 F26 F30 F34 E9 E5 E17 E13 D6 D20 D24 D28 D32 D36 C3 F14 K2 N5 J5 F4 F2 W5
PAGE 147
1 2 3 4 5 6 7 8 VTT 1 1 VTT 1 CS#0 CS#1 CS#2 CS#3 GTLREFA MDR[0..63] 9 2 2 C635 0.
PAGE 148
1 2 3 4 5 6 7 8 2 C675 10U 1206 10V AD31 AD30 AD29 AD28 AD27 AD26 AD25 AD24 AD23 AD22 AD21 AD20 AD19 AD18 AD17 AD16 AD15 AD14 AD13 AD12 AD11 AD10 AD9 AD8 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 2 C677 0.1U 0603 50V 2 C678 1000P 0603 1 0 0603 1 1 12,14 AD[0..
PAGE 149
7 1 2 3 4 1 2 3 4 8 7 6 5 8 7 6 5 G1_301 G7_301 G6_301 G5_301 G2_301 R7_301 R6_301 G4_301 8 7 6 5 8 7 6 5 FA7 120OHM/100MHZ R4_301 R5_301 G0_301 R0_301 B7_301 B4_301 B5_301 R1_301 G1_301 G7_301 G6_301 G5_301 G2_301 R7_301 R6_301 G4_301 7 7 7 7 7 7 7 7 R4_301 R5_301 G0_301 R0_301 B7_301 B4_301 B5_301 R1_301 7 7 7 7 7 7 7 7 ICVCC C631 10U 1206 16V FA10 120OHM/100MHZ C15 0.01U 0603 L22 2 2 GND L7 BEAD_120Z/100M 0805C FA9 120OHM/100MHZ LVDSVCC A C36 4.7U 0805 +80-20% 1 1 PLLVCC C33 0.
PAGE 150
1 2 3 4 5 6 7 8 +3V ASDIN1 ASDIN0 ASDOUT ASYNC U24D SMCLK SMBDAT GP15/SMBALT# GP0/PREQ#3/TXD0# GP1/PGNT#3/TXD1# GP2/LDRQ1#/TXD2# GP3/RXER GP4/TXCLK GP5/COL GP6/CRS GP7/SPDIF GP8/MDC GP9/RXCLK 2 2 AH3 AG3 A8 SMBCLK SMBDATA CARD_ACT F10 D6 USB_OC0# USB_OC1# SMBCLK 8,9 SMBDATA 8,9 CARD_ACT 14,22 USB_OC0# 21 USB_OC1# 21 USBP0USBP0+ USBP1USBP1+ USBP2USBP2+ USBP3USBP3+ USBP4USBP4+ USBP5USBP5+ USB_48MHZ GND 1 C178 10P 0603 LM393A C285 SO8 4.7U 0805 +80-20% GND R587 1 2 0603 4.
PAGE 151
1 2 3 4 5 6 7 8 A A 2 2 +5V 16V C95 10U 1206 2 0.1U 0603 16V GND GND L30 0805C 7 9 G6_301 G7_301 39 TXCLKIN 2 1 B TXIN18 TXIN19 40 41 5 5 5 5 5 5 5 5 G5_301 G4_301 G3_301 B7_301 B6_301 B5_301 B4_301 B3_301 6 4 3 2 1 44 43 42 29 ADDR CVBS Y XCLK C HS VS CSYNC BCO P-OUT D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0] ADDR XTALO XTALI 1 C99 0.1U 0603 16V 2 1 C70 0.1U 0603 16V 2 1 2 1 C543 0.
PAGE 152
1 2 3 4 5 6 7 8 CLOCK SYNTHESIZER AND DRIVER L39 2 C172 0.01U 0603 C184 4.7U 0805 +80-20% 2 C126 1000P 0603 2 C174 0.01U 0805 1 1 1 C137 0.1U 0603 16V 2 2 1 1 1 C177 0.1U 0603 16V 2 2 C201 10U 1206 16V VDDPCI 2 BEAD_130Z/100M 2 1 +3V 1 A VDDSDR1 2 1 1 L47 BEAD_130Z/100M C112 10U 1206 16V 2 1 +3V C173 4.7U 0805 +80-20% A SELECT CPU VOLTAGE (2.
PAGE 153
1 2 3 4 5 6 7 8 144 PIN SODIMM SOCKET MD[0..63] A A +S3V +S3V J6 CLOSE TO RECEIVER 3 MDR[0..63] RP20 RP10*8 RP_16P8R_4016 RP22 RP10*8 RP_16P8R_4016 RP23 RP10*8 RP_16P8R_4016 RP25 RP10*8 RP_16P8R_4016 B RP41 RP10*8 RP_16P8R_4016 RP44 RP10*8 RP_16P8R_4016 RP54 RP10*8 RP_16P8R_4016 RP53 RP10*8 RP_16P8R_4016 MDR[0..63] MD[0..
PAGE 154
1 2 3 4 5 6 7 8 2M X 16 BITS X 4 BANK X 4 = 64M BYTES MD[0..63] MD[0..63] 9 MD[0..
PAGE 155
1 2 3 4 5 6 7 8 +3V +12V D Q3 2N7002 1 A S 2 3 D S G FPVCC S 5 5 6 7 8 2 1 1 1 1 2 2 1 R72 75 0603 1% Q2 NDS9410 SO8 D G 4 GND AVGND L4 GND GND GND BEAD_120Z/100M 0805C 1 1 1 1 R69 75 0603 1% 2 0 0805C 1 C101 100P 0603B R7 470K 0603 R5 4.
PAGE 156
1 2 3 4 5 6 7 8 +S3V 1 C281 0.1U 0603 50V GP17/INT GP26/INT IQSB0# ALARM# 1 2 2 2 24 20 L44 Slave address 00110001 BEAD_120Z/100M C166 0805C 0.1U 0603 50V GND 21 21 13 13 +S5V 2 GND SCROLL_LOCK# CAP_LOCK# PIDEACTS# SIDEACTS# C160 0.1U 0603 50V 1 2 1 2 3 4 5 6 7 8 GND1 GND2 GND3 GND4 GND1 GND2 GND3 GND4 2 8PX1/1.
PAGE 157
1 2 3 4 5 6 7 8 terminating resistors should be place close to SiS630 PDIOR# PDDACK# PDD1 PDIOW# PDD2 PDD13 PDD14 PDD0 PDD1 PDD2 PDD13 PDD14 PDD0 1 2 3 4 5 6 7 8 PRIMARY IDE & FDD CONNECTOR RP46 RPDIOR# RPDDACK# RDDP1 RPDIOW# RDDP2 RDDP13 RDDP14 RDDP0 16 15 14 13 12 11 10 9 (+5VS) +5V 2 4 4 4 4 4 4 4 4 JS11 SHORT-SMT4 1 0*8 RP_16P8R_4016 +5VS_FDD RP45 GND RDDP7 RDDP6 RDDP5 RDDP4 RDDP3 RDDP2 RDDP1 RDDP0 +5VS_HDD RP47 PDD15 PDDREQ 1 4 R616 5.
PAGE 158
1 2 3 4 5 6 7 8 +3V 1 2 3 4 5 10 9 A_CD1# 8 A_CD2# 7 AVS2 6 AVS1 RP43KX8 RPSOE_10 A CARD_VCCB RP511 BCA19 BCA21 BCA23 BCA22 10 9 8 7 6 BCA14 BCA15 BWP BCA20 A BCD[0..15] BCD[0..15] 15 BCA[0..25] BCA[0..
PAGE 159
1 2 3 4 5 6 CARD_VCCA 7 8 CARD_VCCB U506 GND 14 14 ACE1# ACE2# 14 14 14 AVS1 AOE# AIORD# 14 AIOWR# 14 AWE# 14 ARDY ACD7 ACD15 ACE1# ACE2# ACA10 AVS1 AOE# AIORD# ACA11 AIOWR# ACA9 ACA17 ACA8 ACA18 ACA13 ACA19 ACA14 ACA20 AWE# ACA21 ARDY VPPAOUT VPPAOUT 1 ACA22 2 B 1 R566 2 47 0603 ACA16 C275 0.1U 0603 50V ACA23 ACA15 ACA24 ACA12 ACA25 ACA7 AVS2 ACA6 ARESET ACA5 AWAIT# ACA4 AINPACK# GND 14 ACA[0..25] ACA[0..
PAGE 160
4 5 6 7 8 L503 BEAD_600Z/100M 1 2 J503 1 2 4 5 3 VA 2 R505 6.8K 0603 5% ADP3301AR-5 SO8 A 1 1 8 7 6 5 C35 0.1U 0603 CAGND A GND 1 2 1 2 L13 1 L10 1 4.7K 0603B C66 1U 0603B 273000130006 2 BEAD_600Z/100M 2 BEAD_600Z/100M 0603B 0603B 1 2 C29 47P/NA 0603B J4 HIROSE MA/2P/ST DF13B-2P-1.25V 2 2 1 4.7K 0603B 1 1 R503 6.8K 0603 5% 2 BEAD_600Z/100M 0603B IN0 IN1 ERR SD OUT0 OUT1 NR GND 1 K 2 2 1 2 2 LINE_IN/R R41 1 C48 0.1U 0603B 2 1 1 2 1 2 C59 0.
PAGE 161
1 2 3 4 5 6 7 8 C93 1 C81 1 R52 2 1 10K 0603B 4.7U 16V 1206 1 AOUT_R AOUT_R 1 2 15K 0603B C90 C52 16 2 5P/NA 0603B R64 2 1 2 2 C80 A 1 4.7U 16V 1206 R49 2 1 5P/NA 0603B 2 0.1U 0603B 10K 0603B C71 R45 R61 1 A 2 0603 33K 5 VR501 10K 8 7 3 4 2 1 GND C65 16 AOUT_L AOUT_L 1 2 4.7U 16V 1206 C58 1 1 2 1 0.1U 0603B 2 5P/NA 0603B 2 10K 0603B R34 1 2 0603 33K B B C57 1 R31 2 1 10K 0603B 4.
PAGE 162
1 2 3 4 5 6 7 8 +3V +5V A 1 L48 BEAD_120Z/100M 0805C C226 1 1210 2 1 C246 0.
PAGE 163
1 2 3 4 5 6 7 8 +5V HP FIR MODULE HSDL-3600#007 D1 SUPER I/O +3V 16 BIT ADDRESS DECODE 11-BIT ADDRESS/COM2 1 2 4.7U 1206 C12 0.47U 0805 2 RPSOA_8 RP4.7KX4 5 6 7 8 JP_NET JP_SMT4_DFS JL509 U501 A +3VS_FIR 3V_FIR 1 2 3 4 5 6 7 8 9 10 FIR_GND U27 PC97338VJG PQFP100_0.
PAGE 164
2 3 4 5 6 7 8 VMAIN H8_VDDA D15 RLZ5.6B LP2951-02BM SO8 L530 C175 4.7U 1206 10% GND C176 0.
PAGE 165
1 2 3 4 5 6 7 8 USB CONNECTOR +5V J508 J1 L9 1 +5V 5 2 BEAD_120Z/100M 0805C 20 BLADJ 2 1 1 C30 1000P 0603B C28 1000P 0603B C31 220P 0603B 1 1 1 1 1 L504 C23 220P 0603B A DF13-6P-1.
PAGE 166
1 2 3 4 5 6 7 8 SD[0..7] 18,19,20 SD[0..7] SYSTEM BIOS 10 9 8 7 6 1 2 3 4 5 P_GNT2# P_GNT1# IRDY# THRM# audio IRDY# SD[0..15] SA[0..
PAGE 167
1 2 3 4 5 6 7 8 pull high at d/d bd R78 1 4.7K 20 H8_PWRON 2 0603 PWR_ON 24 +5V A 1 A R79 100K 0603 D9 2 Q21 VDD5 VDD5S S G D R77 47K 0603 1 24 1 1 CPU_PWR_ON G 1 D S C115 1U 0603 R188 470K SI2301DS SOT23_FET 2 2 BAV99 2 pull low at PQ510 2 3 C233 0.1U/NA 0603 50V D19 GND A K ADEN# 20,24 RLS4148 MLL34B 3 GND +S3V 1 Q20 DTC144WK 2 SOT23AN_1 GND JL21 4,5,12,18 PCIRST# PCIRSTNS# 14,15 JP_NET JP_NET15 B B VDD5 +3V R80 4.
PAGE 168
A B C VDD5S D E VDD5 4 4 J514 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 21 TP_R 20 GREEN_LIGHT 12 IQSB0# 21 AC_POWER# 21 BATT_R# 17 ROUT+ 17 ROUT- TP_L 21 YELLOW_LIGHT 20 IQSB1# 12 BATT_LED# 21 BATT_G# 21 LOUT+ 17 LOUT17 RESET_SW# 20,21 BAT_C 12,20 BAT_V 20 JS2 23 PWR_ON 1 2 D/PWR_ON 27 SHORT-SMT1 1 26 NiMH/Li# 12,20 BAT_D 20 BAT_T 25,26 BATT 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 2 1 HDR/FM/16PX2/1.27MM S-200-0100-321 2 C252 0.1U 0603 50V JS3 C680 0.
PAGE 169
A B C D E 4 4 ADINP PU2 SI4835DY SO8 PR2 0.02 1 3 2 1 A4 2 PR15 470K 0603 PC9 0.1U_NA 0603B 50V PR16 226K 0603B 1% 2 PD501 RLZ24D MLL34B PR9 4.7K 0805C 1 2012 2 D/VMAIN BEAD_120Z/100M 1 2 PR21 100K 0603 1 2 3 1 2 PR10 4.7K_NA 0603 A5 K PD4 EC31QS04 DC2010 1 1 K PL3 A 2 PC509 0.1U 0603B 50V A 2 PC2 0.1U 0603B 50V 2512 1% 4 1 1 2 6.5A/32VDC G BEAD_120Z/100M 8 7 6 5 PD3 EC31QS04 DC2010 A K 2 A3 1 1206 2 2 PF501 A2 1 1 2012 1 D JACK-3P/D2.5/H9.
PAGE 170
K 2 2 1 A 4 2 1 1 1 4 RLZ20C MLL34B 2 GND 1 R202 976K 0603 1% R203 576K 0603 1% D PR60 4.99K 0603 0.1% 1 1 1 PR62 23.2K_NA 0603 0.1% PU3A LMV393M SSOP8 6 PD5 2 GND A PR508 PQ506 D S 2N7002 SOT23_FET NiMH#/Li G LI_OVP 2 1 CHARGING 20 S - 2 1 1 2 R30 14K 0603 .1% PC20 0.
PAGE 171
A B C D E 4 4 24 D/PWR_ON PL504 1 PC516 10U 1210 25V PC1 1000P 0603 2 100U 25V 20% 1 PC503 + 2 1 PR20 100K_NA 0603 2 2 1 1 D/VMAIN_1 2 BEAD_120Z/100M 2012 2 1 D/VMAIN PC511 10U 1210 25V PU501 HA178L12UA SOT89N 2 CSH5 CSL5 14 PC513 + 330U 6.3V 20% PC10 + 150U 7343 6.3V 1 2 K 1 PC12 0.1U 0603 50V PR504 0 0603 PD503 PC7 10U 1210 10V RLZ5.
PAGE 172
A B C D E 1 7 8 INTVCC PU4A SI4920DY SO8 D PQ16 2N7002 SOT23_FET PR48 100K 0603 TG1.5. 2 G PL6 10UH 20% THA02P63B 1 2 1 2 PC14 10U 1210 25V 20% PC21 0.01U 50V 10% 0603B 4 GND 1 S PC15 10U_NA 1210 25V 20% 2 PC22 1000P 0603 25V 10% 2 4 1 1 D/VMAIN PD14 BAS32L MLL34B 1 2 2 1 2 A 1 2 1 1 1 1 K 5 6 3 1 BST1.8 1 2 GND GND PC36 10U_NA 1210 25V 20% 3 PC35 10U 1210 25V 20% D A TG1.8 2 G 1 S PC49 0.1U 50V 0603 PU5A SI4920DY SO8 GND PL8 10UH 20% THA02P63B SW1.
PAGE 173
A B 1 D 2 OPEN-SMT4 1 PQ10 SI2302DS SOT23_FET 2 +S3V_P PL1 BEAD_120Z/100M 0805C S1.8V S +5V 3 1 2 G 1 2 1 3 1 2 PC42 1U 0805 10V PC34 0.1U 0603 50V PR26 10K 0603 1% PR17 100K/NA 0603 2 D 2 2 PC39 1U 0805 10V 2 2 PQ11 SCK431LCSK-0 SOT23N 1 1 PR25 4.53K 0603 1% 2 1000P 0603 10%,X7R 2 1 PC37 1U 0805 10V 2 1 PC17 0.
PAGE 174
B C D E VCC_CORE 1 PC546 + 150U 7343 4V 20% 2 1 PC545 + 150U 7343 4V 20% 2 1 PC543 + 150U 7343 4V 20% 2 1 PC125 + 150U 7343 4V 20% 2 2 PC124 0.01U 50V 10% 0603B 2 4 1 1 A PC126 + 150U 7343 4V 20% 4 GND PL12 120Z/100M 2012 1 PC131 0.01U 50V 10% 0603B 2 1 PC130 10U 1210 25V 20% 2 1 2 PC129 10U 1210 25V 20% 2 1 1210 25V 20% 5 6 7 8 PC128 10U PC132 1000P 0603 25V 10% 5 6 7 8 5 6 7 8 +S5V_P 1 PC127 + 22U EW6.
PAGE 175
7521P HDD/FDD BD ; <%2 ? ; <%2 8 = 7 > !< 3 %6 5 5 ! 3 5 % #3 ! 3 4 !" 3 !6 3 45 3 4 3 % 3 2 " ! ! ! ! ! ! ! ! 2!% 3 ' & 8 ! ! 9 ! "43 ! "!3 "! : ! 63 ! !9 & ! ! ! % 3 3 ' 7 ' & &7 &' && & & 87 8' 8& 8 8 7 ' & 7 ' & 7 ' & 5 5 4 3 45 3 45 3 %6 5 !< 3 @3 ! 3 !3 !3 ! ! ! ! ! ! ! ! !6 3 !6 3 = 7 > 4 !" 3 4 !" 3 ! 3 ! 3
PAGE 176
REV DESCRIPTION OF CHANGE ECR R00 1.Base on RACE QSB trans bd r01. /, 3 4 ' FDD LED 1 ' + / 47 1 9 91 3 4 ' 1 / ',--.-, /+ 3 4 ': 1 / %0 .-, /+ / 8 / / / 47 1 9 91 -9 : 5 8 47 1 9 91 -9 : 5 NUM_LOCK LED / -9 : 5 SCROLL_LOCK LED 8 DATE 02/15/2000 8 47 1 9 91 3 4 ' CAP_LOCK LED 1 / 1 .
PAGE 177
REV 8 8 : -*!' ; < 8 )< A* ( ' : ; < 8 4! + "* '* : *+ : / /< 11 : ; < 8 DATE 05/26/2000 R0A 1.Relayout base on R00 2.Correcting J1 shape library. 06/16/2000 R0B 1.Relayout base on R0A 2.Add SW1 for H8_RESET function 3.Add PL3 & PL4 for EMI issue 4.Add capacitors for Power issue 07/04/2000 R01 1.Relayout base on R0b 2.Remove one of VDD5S circuit 3.Change PF2 from 6.5A/32V to 125V/5A 08/15/2000 R02 1.
PAGE 178
REV 8 8 ' DESCRIPTION OF CHANGE ECR DATE R00 05/26/2000 R0A 1.Relayout base on R00 2.Remove SW3 & SW4 pin 4 3.Remove 74164 blanking circuit 4.Reverse BATT_G# & BATT_R# pin assignment error 5.Change power source from VDD5 to VDD5S for LEDs 6.Remove the reserved circuit 07/04/2000 R01 1.Relayout base on R0A 2.Change Batt LED from BRPG1201W to 19-22SRVGC/TR8 3.Change Batt LED RES to fix orange color 4.
PAGE 179
REV DESCRIPTION OF CHANGE ECR DATE R00 R0A 1.Relayout base on R00 2.Change PF1 from MINISMDC110 to MINISMD0C14-2 3.Change J2 from DF1.3B-2P-1.25v to DF1.3-2P-1.25H 4.ADD C1,C2 for MDC safety 08/15/2000 1.Relayout base on R0A 09/07/2000 R01 % . 0$, 7 /0 /1 )$ )$ .
PAGE 180
SERVICE SERVICE MANUAL MANUAL & & TROUBLESHOOTING TROUBLESHOOTING GUIDE GUIDE FOR FOR 7521 7521 Plus/N Plus/N Sponsoring Editor : Shoestring Tsai Author : Richard.Wang Assistant Editor : Kelly Chiang Publisher : MITAC INTERNATIONAL CORP. Address : 4F, NO.18, PU-DING ROAD, HSINCHU, TAIWAN, R.O.C. TEL : 886-3- 5645850 Fax : 886-3- 5781245 First Edition : Aug. 2001 E-mail : Jesse.Jan @ mic.com.