MiTAC 7521 PLUS/N manuale d’uso

SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR 7521 Plus/N 7521 Plus/N AUG. 2001 AUG. 2001 BY BY ： ： Richard Wang Richard Wang TESTING TECHNOLOGY DEPARTMENT / TSSC TESTING TECHNOLOGY DEPARTMENT / TSSC[...]

1 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE CONTENTS CONTENTS 1. 1. Hardware Engineering Specification Hardware Engineering Specification ---------------------------------------------------------------- ---------------------------------------------------------------- --------------- --------------- 1.1 Introduction ------------- -[...]

2 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE CONTENTS CONTENTS 6. 6. System Block Diagram System Block Diagram ----------------------------------- ----------------------------- ----------------------------------- ----------------------------- --------------------------------- --------------------------------- 7. Maintenance Diagnos[...]

3 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1. Hardware Engineering Specification 1.1 Introduction 1.1.1 General Description This document desc ribes the engineering specificati on for 7521 plus portable notebook computer system. 1.1.2 System Overview The 7521 plus model motherboard will acce pt Intel Pentium III at FSB 133/100MHz[...]

4 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE The SiS900 is a single chip 10/100Mbps Fast Ethernet LAN solution, wh ich fully integrates both the Media Access Controller (MAC) with PCI bus master in terface and 802.3u compliant 10/100Mbps ph ysical layer interface into a 128 pins PQFP, 0.35um process chip. It is targ eted at low-cos[...]

5 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.2 CPU MODULE Intel Pentium III/Celeron Processors with 370 pins FC-PGA packag e. Pentium III 600/650/ 667/700/733 /750/800 MH z, 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 s ynthesizer : ICS9248-[...]

6 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE By integrating the UltraAGP TM technology and a dvanced 64-bit graphic display interf ace, 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 provide[...]

7 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Integrated DRAM Controller 3-DIMM/6-Bank of 3.3V SDR AM 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 Mana gement Memory Region Programmable Buffer St[...]

8 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 Si ze into Optimized Block Size Fast PCI IDE Master/Slave Controlle[...]

9 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 Ba ndwidth Supports Individual[...]

10 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Internal Full 32 Bits ARGB Format U ltra Pipelined Architecture for Ultra High Performance and High Rendering Quality 128-Bit 2D Engine with a Full Instruction Set Built-In 64x64x2 Bit-Ma pped Hardware Cursor Built-In 32x32x16, 32x 32x32 Bit-Mapped Co lor Hardware Cursor Maximum 64 MB F[...]

11 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Built-in Programmable 24-bit True-C olor RAMDAC up to 270 MHz Pi xel Clock RAMDAC Snoop Function Built-in Reference Voltage Genera tor and Monitor Sense Circuit Supports Down-L oadable RAMDAC for Gamma Correction in Hi gh Color and True Color Mode Built-in Dual-Clo ck Generator Supports[...]

12 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Low Pin Count Interface Forwards PCI I/O and Memo ry Cycles in to L PC bus Translates 8/16 bit DMA cy cles into PCI bus cycles Advanced PCI H/W Audio & Modem Advanced Power Management Meets ACPI 1.0 Re quirements Meets APM 1.2 Requirements ACPI Sleep States Include S1, S3, S4, S5 CP[...]

13 7521 7521 Plus / N N/B MAINTENANCE Plus / 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-routab le to Any IRQ channel Three 8254 Compatible Programmable 16-bits counters System timer interrupt Gene[...]

14 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Universal Serial Bus Host Controller Open HCI Host Contro ller with Root Hub Two USB Host Controllers Six USB Ports Supports Legacy Devices Over Current Detection I²C Bus/SMBus Seri es Interface Integrated Fast Ethernet Controller and MAC Interface Plug and Play Com patible High-Perfor[...]

15 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.5 Super IO: NS PC 97338VJG High speed PC16550A compatible UART with receive/transmit 16 Bytes FIFO programmable se rial baud rate generator Multi-mode parallel port support in cluding standard port, EPP/ECP (IE EE1284 compliant, 2 interrupt pins) Plug and Play module FDC, 100% IBM c[...]

16 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.6 PC CARD interface controller : TI1225 ACPI 1.0 Compliance PCI Power Manageme nt interfac e specification 1.0 Compliance Supports distributed DMA (DDMA) and PC/PCI DMA Advanced subm icron, low-power CMOS technology. Supports two I/O windows and two memory windows available to each [...]

17 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 Switchi ng for Dual-Slot PC Card Interface I2C 3-Lead Serial Interface Co mpatible With CardBus Controllers 3.3 V Low-Voltage Mode M[...]

18 7521 7521 Plus / N N/B MAINTENANCE Plus / 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-count er, two time constant registers PWM timer (2 channels) Resolution: 1/250 Duty cycle can be set from 0 to 100% I²C bus[...]

19 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 fo r external keyboard,[...]

20 7521 7521 Plus / N N/B MAINTENANCE Plus / 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, PO ST, 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 Bo[...]

21 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.9.2 BIOS Setup Feature Introduction Setup Utility allows you to ente r the system configuration information. This information is need ed by the system to identify the type of device installed an d to setup special features . Typical configuration information includes the data and ti[...]

22 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.10 POWER MANAGEMENT ACPI Introdution The system BIOS is conform with ACPI1.0B specification. Concept ACPI (Advanced Configurati on and Power Interface) repl aces APM and PnP functionality , it’s a Operating-System controlled Power Management and a subset of OnNow s ystem. The gene[...]

23 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Summary of Device Power Sates Device State Power Consumption Device Cont ext Retained Driver Restoration D0 – Fully On As needed for operation All None D1 D0>D1>D2>D3 >D2 <D2 D2 D0>D1>D2>D3 <D1 >D1 D3 – Off 0 None Full init and load System States 1. Wor[...]

24 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Events that can bring the plat form back to Working state : •. Pressing any ke y on the keyboard. •. Wake on LAN. •. Modem a nswering call. •. Pressing the power button less than 4 s econds. 3.Hibernation (S4) The S4 sleeping state is lowest power, longes t wake-up late ncy slee[...]

25 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.Mechanical Off No power supplied and consumption, ac hieved 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 Hibe rnation (S4), then sy stem returns to S4. Component Level Power Managemen[...]

26 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE APM Concept This platform supports Adva nced Power Ma nagement (APM1. 2) develope d by Microsoft a nd Intel. APM co nsists of one or more layers of software that support power management in comput ers with power m anageable hardware. Power State 1.Full Power Default mode. System activit[...]

27 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 4.Suspend System in not working and in a low power consumption state with maximum power sa vings . Most power managed devices are not powered. Includes stopping the CPU clock and s hutting down all peripherals. Detection restores full power state. System takes a relatively lo ng time to[...]

28 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Off System is not working, the po wer supply is off. Operational parameters are not saved. System rese ts and initializes when transitioning to the Full on State. Component Level Power Management Matrix[...]

29 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.11 Memory System HYUNDAI SD RAM 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 so ckets on M other Board for expansion Supports 3.3V SDRAM 2 banks on one socket. SDRAM accesse[...]

30 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.12 Interface Power Supply Jack. One Standard Parallel Po rt 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 Fo r COM1/COM2, The Other Fo r FIR/MIR/SIR/SHARP ASK. O[...]

31 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.2.13 Audio System: AC’97 CODEC CS4299 AC’97 CODEC CS4299 provides a complete high quality audio solution, Feat ure 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 I[...]

32 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 5.1 m[...]

33 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 so lution, which fully integrat es both the Media Access Controller (MAC) with PCI bus master interface and 802.3u compliant 10/100Mbps physical layer i[...]

34 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE SiS900 Features Integrated Fast Ethernet controller and 10/100 megabit pe r second (Mbps) Physical Lay er Transceivers for the PCI local bus PCI specification revision 2. 1 compliant 32-bit glueless PCI host interface Plug and Play comp atible Supports PCI clock frequency from DC to 33 [...]

35 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Power down of 10Base-T/100Ba se -TX sections when not in use Jabber control and auto-polarity correction for 10Base-T. User programmable LED function m apping Supports software, enhanced software, and automatic polli ng sche mes to internal PHY status m onitor and interrupt Supports 10B[...]

36 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 ci rcuit which provides a PC 99 compliant solution for TV output. It provides a univers al digital input port to accept a pixe l data stream from a compatible VGA controll[...]

37 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.3 Special Feature Function 1.3.1 Hot Key Function 1.3.2 Easy Start Button function[...]

38 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.3.3 Flash ROM (BIOS) 7521 plus system u tilizes the state-of-the-art F lash EEPROM technology. User can upgrade the syst em BIOS in the future just running the program from MiTAC. 1.3.4 LED Indicators System has ten status LED indica tors to display system activity which includ e abov[...]

39 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.3.5 COM port assignment  COM1 : MODEM / RS-232 / Dis able  COM2 : IR / RS-232 / Disable 1.4 SMM and System BIOS System Management Mode 7521 plus system has built in several powe r saving modes to pr olong the battery usage for mob ile purpose. User can enable and configure diffe[...]

40 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Suspend to DRAM: •C P U : o f f • SiS630 : Partial off •V G A : S u s p e n d •P C M C I A : S u s p e n d • Super IO : off • Audio : off • SDRAM: Self Refresh. Suspend to HDD: • All devices are stopped cloc k and power-down, • System status is sa ved in HDD. • All s[...]

41 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Cover Switch System automatically provides power savi ng on monitoring Cover Switch. It will save battery power and prolong the usage time when user closes the no tebook cover unintentionally but the system still in power on mode . There are two functions to be chosen. 1. Switch to CRT [...]

42 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.5 Peripheral Components  Hyundai 14X13 1024X768 XGA TFT Panel Display size (diagonal): 14.1 inch 262,144 colors displ ay 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[...]

43 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 Cons umption: 4.5W (Du[...]

44 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE  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.: -[...]

45 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 consum ption of 2.4W (maximum only 3. 2W).  MATSUSHITA: UJDA520L-SH 4X s[...]

46 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE  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) CMOS [...]

47 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE  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 ra[...]

48 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE  Dimension: (25mmx25mm x10mm) ± 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 temperatur e: -10 - +70 degree C.  Weight: 7g  Direction of rotat[...]

49 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 1.6 Appendix 1: GPIO definitions GPI DEFINITIONS Signal Function Description During After S1 S3 S4/S5 Remark Name PCIRST# PCIRST# GPIO [0] Panel ID switch1 Panel ID select In In Defined Off Off GPIO [1] Panel ID switch2 Panel ID select In In Defined Off Off GPIO [2] Panel ID switch3 Pan[...]

50 7521 7521 Plus / N N/B MAINTENANCE Plus / 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. CPU & SDRAM Frequency setting tab[...]

51 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2 System View and Disassembly 2.0 Tools introduction 1.Minus screw driver with bit size 3mm fo r CPU assemb ly & disassembly. 2. Auto screw driver for system assembly & disassem bly. Screw Size Toolin g Tor. Bit Size 1. M2.0 Auto-S crew driver 2.5-3.0 kg/cm2 #0 2. M2.6 Auto-Scre[...]

52 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 2.1.2 Left-Side View n Audio Input Connector o Microphone Connector p Audio Output Connector q Volume Control r PC Card Slots s Floppy Disk Drive[...]

53 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.1.3 Right-Side View n Battery Pack o CD-ROM/DVD-ROM Drive p IR Port 2.1.4 Rear View n Power Connector o PS/2 Port p USB Ports q Parallel Port r Serial Port s RJ-45 Connector t VGA Port u TV-Out Connector v RJ-11 Connector w Kensington Lock[...]

54 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.1.5 Bottom View n CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack 2.1.6 Top-Open View n LCD Screen o Power Button p Keyboard q Touchpad r Stereo Speaker Set s Easy Start Buttons[...]

55 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2 System Disassembly The section discusses a t length each major compone nt for disassembly/reassembly and show corresponding illustrations. Use the chart below to determine th e disassembly sequence for re moving compone nts from the notebook. NOTE: Before you start to install/replac[...]

56 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.1 Battery Pack Disassembly 1. Carefully put the no tebook upside down. 2. Turn the locking button to the "unlock” ( ) position ( n ), then slide and hol d the latch in the unlock position and pull the bat tery pack out of the compartment ( o ).(figure 2-1) Figure 2-1 Reassemb[...]

57 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.2 CPU Disassembly 1. Carefully put the no tebook upside down. 2. Remove two screws locking th e 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 heatsi[...]

58 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 4. Insert a minus screwdriver 101 (JIS st andard) into the “OPE N” hole of the socket, and push the screwdriver toward the CPU to fre e 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[...]

59 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.3 Modem Card Disassembly 1. Carefully put the no tebook 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 fastenin g the connector board and the grounding ca ble. (figure 2-6)[...]

60 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 4. Slightly lift up the connecto r board, and then remove one sc rew 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 mode m card into the system board a nd secure with two screws. 2. Hold the connect[...]

61 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.4 FDD/HDD Module Disassembly 1. Carefully put the no tebook upside down. 2. Remove one screw and slid e the FDD/ HDD module out of the compartment. (figure 2-8) Figure 2-8[...]

62 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. To take the hard disk drive ap art, 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 in[...]

63 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.5 CD-ROM Drive Disassembly 1. Carefully put the no tebook upside down. 2. Remove the battery pack. (S ee section 2.2.1 Disas sembly.) 3. Remove the modem card. (See section 2.2.3 Disassem bly.) 4. Remove the FDD/HDD module. (See st ep 2 in section 2.2.4 Disa ssembly.) 5. Remove one [...]

64 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 6. Hold the CD-ROM drive and slid e it outward carefully. (figure 2-12). Figure 2-12 Reassembly 1. Push the CD-ROM driv e into the compartment. 2. Replace the base unit frame and se cure with thirteen screws (incl udes one locking the CD-ROM drive). 3. Replace the FDD/HDD module. (See s[...]

65 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 an d disconnect the cable from t[...]

66 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.7 SO-DIMM Disassembly 1. Remove the keyboard to acces s the SO-D IMM sockets. (See section 2.2.6 Disas sembly.) 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 p[...]

67 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.8 LCD Assembly Disassembly 1. Open the top cover and remove the Easy St art pa nel. (See steps 1 to 2 in section 2.2.6 Disas sembly.) 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 [...]

68 7521 7521 Plus / N N/B MAINTENANCE Plus / 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.[...]

69 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.9 LCD Panel Disassembly 1. Remove the LCD as sembly. (S ee section 2.2.8 Disasse mbly.) 2. Remove the two rubber pads and two screws on the lower pa rt of the panel. (figure 2-18) Figure 2-18 Figure 2-19 3. Insert a flat screwdriver to the lower part of the fram e and gently pry the[...]

70 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.10 Inverter Board Disassembly 1. Remove the LCD as sembly and de tach the LCD frame (see instructions in prev ious 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 [...]

71 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.11 System Board Disassembly 1. Remove the Keyboard. (See section 2.2. 6 Disassembly.) 2. Remove the LCD as sembly. (S ee section 2.2.8 Disasse mbly.) 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 re[...]

72 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 6. Remove six screws a nd t wo hexnut screws fastening the meta l 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 asse mbly and disconnect the cable. (figure 2-24)[...]

73 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8. Remove four screws to take th e recharge board apart. (figure 2-25) Figure 2-25 Figure 2-26 9. Remove two screws fasteni ng the system board and dis conne ct the cable of the touc hpad. Now you can lift the syst em board up from the base unit. (figure 2-26) Reassembly 1. Fit the syst[...]

74 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 th e Easy Start board [...]

75 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 2.2.12 Touchpad Disassembly 1. Remove the system board. (S ee section 2.2.11 Disasse mbly.) 2. Remove the four screws to lift up the t ouchpad holder and touc hpad panel. (figure 2-27) Figure 2-27 Reassembly 1. Replace the touchpad holder and touchpad panel, and se cure with four screws[...]

76 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.1 Mother Board-A J6 J3 J4 SW2 J2 J1 SW1 J5 SW3 SW4 J6: 144 pins expansion SDRAM SO-DIMM socket. SW1: Cover Suspend Switch. SW2: Power button. SW3 : CPU FSB Select. SW4 : LCD Panel ID Select. J1: Inverter BD CONN. J2: LCD panel LVDS[...]

77 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.2 Mother Board Switch Table SW3. CPU & SDRAM Fr equency setting tabl e: 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 SW2 SW1 S[...]

78 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.3 Mother Board-B U501 PJ501 J502 J508 J505 J507 J504 J506 J503 J509 J510 VR501 J506 J516 J513 J512 J514 J515 BT501 J511 U502 U503 J501 PJ501: Power jack ( AC adapter). J502 : PS2 Mouse/keyboard. J503: Line in Jack. J504: RJ45 LAN c[...]

79 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.4 Daughter Board MDC/LAN transfer board J1 J23 JP1 U2 U1 JP3 JP1: MDC jump wire connector. JP3: Connector 2 for connected MDC/LAN transfer board to M/B. J1: RJ-11 phone jack fo r internal mode m. J23: MDC jump wire connector.[...]

80 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches 3.5 Charger Board Charge board(side B) J500 SW500 Charge board(side A) J1 PJ4 J2 J1:Charger & Touch-Pa d connector to M/B. PJ4:Battery pack connector. J2: Internal speaker connector. J500: Touch-Pad button connector. SW500: CMOS [...]

81 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 SW2 D8 SW3 SW3 SW2 SW1 SW4 SW5 Easy Start Button Board (side B) J500 IQSB board(side B) J501 SW1: Touch Pad Left Key. SW2: Touch Pad L[...]

82 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components 4.1 Main Board ( Side A ) U7 U6 U14 U2 U13 U31 U27 U28 U24 U15 U1 U5 U18 U19 U9 U16 U17 U11 U3 U21 PU10 U33 PU22 PU19,12,23 PU18 PU14 PU4 PU2 PU5 PU9 PU7 U22 U 23 U25 U 26 U29 U 30 U1: ADM3311ARU RS232/SIO. U2: DS90C363MTD VGA LVD control[...]

83 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components 4.2 Main Board ( SIDE B ) BT501 U502 U503 U505 U502: PH163112 LAN Controller. U503: Socket 370 CPU. U505: PCI1225PDV PC CARD interface controller.[...]

84 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signa l Reference Sign al Nam e I/O Sign al Des cript ion A[35: 3]# I/O GTL+ The A[35:3 ]# (Address) sign als defin e a 2 36 -b yte physi cal m emor y address s pace. W hen A DS# is acti ve, th ese [...]

85 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components Alphabetical Sig nal Reference Sign al Nam e I/O Sign al Desc ripti on BPRI# I GTL+ The BPRI # (Bus P riority Re quest) signal is us ed to arb itrate for ow nership of t he sy stem bus. I t must be co nnecte d t[...]

86 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components Alphabetical Sig nal Reference Sign al Nam e I/O Sign al Desc ripti on GHI# I 1.5V To l e r a n t The GHI # signal contro ls w hich ope rati ng mo de bus rat io is sel ected in a mo bile Pe ntium I II pro cess o[...]

87 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components Alphabetical Sig nal Reference Sign al Nam e I/O Sign al Desc ripti on PICCLK I 2.5V To l e r a n t The P I CC LK (AP IC Clock) sign al is an input c lock to th e proces sor and s ystem logic or I/O APIC th at i[...]

88 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components PWRGOOD Relation ship at Power On Sign al Nam e I/O Sign al Desc ripti on RSP# I GTL+ The R SP# ( Respon se Pa rity) si gn al is driven by the r espon se ag ent (the agent resp onsible for comp letion of th e cu[...]

89 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components PWRGOOD Relation ship at Power On Sign al Nam e I/O Sign al Desc ripti on VID[4:0] O - Open- drain The VID [4:0] (V o ltag e ID ) pins/b alls can be use d to s uppo rt autom atic se lectio n of pow er s upply v [...]

90 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 Inter face Name T oler ance Pow er Plane Ty p e Attr Descriptio n CPUCLK 3.3V/5V MA IN I Host Clock : ADS# 1.5V MAI N I /O GTL+ Address Strobe : A ddres s Strobe is driv en b[...]

91 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset DRAM Controller Name T olera nce Power Plane Ty p e Attr Descriptio n SDCLK 3.3V/ 5V MAIN I SDRA M Clo ck I nput MD[ 63:0] 3. 3V M AI N I/O Sy ste m Mem ory Data Bus MA[ 14:0] 3. 3V M[...]

92 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset PCI Inter face Name T olera nce Power Plane Ty p e Attr Descriptio n STOP# 3. 3V/5V MA IN I/O S top# : ST OP# indi cat es th at th e bus ma ster m ust sta rt term inating its cur rent[...]

93 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 T ol erance Pow er Plane Ty p e Attr Descriptio n VMA1 1 VGCLK 3.3V MAIN O O Display Me mory Address bi t 1 1 : When 128bit s DRA M inter face e nable , it repr ese[...]

94 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 I nterface Name T olera nce Power Plane Ty p e Attr Descriptio n THERM # 3.3V /5V MAI N I Thermal D etect : TH ERM# is co nnecte d to the inte rnal A CPI -co mpatible[...]

95 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset R TC Interface Name T oler ance Pow er Plane Ty p e Attr Descriptio n AUXOK 1.8V R T C I Aux iliar y Powe r OK : This s ign al is s uppl ied from the power source of resume well . It [...]

96 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset USB interfac e Name T olera nce Power Plane Ty p e Attr Descriptio n CLK48M 3.3V/5V MA IN I USB 48 MHz clock input : This s ignal prov ides the fund amenta l clock for th e USB Contro[...]

97 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE U503 Pentium III / Celeron CPU / FC-P GA SH2 U24 SIS630S SH3 U505 PCMCIA / CARDBUS CONTROLLER TI1225 PCMCIA/ CARDBUS SLOTS SH14 U13 TPS2216 Power Switch LCD PANEL CRT TV OUT S-VIDEO U7 CH7005C TV-Encoder SH7 SH5 SH11 J2 J501 U2 DS90C363 LVDS SH5 U21 SIS900 LAN Controller SH12 RJ45 AC97 [...]

98 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.1 7.1 Introduction Introduction Each time the computer is turned on, the system bios runs a seri Each time the computer is turned on, the system bios runs a seri es of internal es of internal checks on the hardware. This power checks on the hardware. This po[...]

99 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 SOF T BIO S: CODE DESCRIPTION 01h Start of boot loader sequence. 02h Initia lize chipset. 03h Memory Sizing. Perform conventiona l RAM(1st 640K) test with cr[...]

100 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 SOF T BIO S: CODE DESCRIPTION 37h P rotected mode ex it successfu l 38h Update ke yboard output po rt to disable gate of A20 39h S etup cache controller 3Ah[...]

101 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7.3 7.3 .1 .1 Diagnostic Tools : Diagnostic Tools : LED * 8 LED * 8 PIO CONNECTOR * 1 OR PIO CONNECTOR * 1 P/N:411904800001 DESCRIPTION :PWA;PWA -378PORT DEBUG BD Note:Order it from MIC/TSSC 7.3 7.3 .2 .2 CIRCUIT: CIRCUIT: PIO PIO CONNECTOR CONNECTOR LED LED [...]

102 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 FAI[...]

103 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.1 NO POWER: When the power button is pressed, nothing happens ,power indicator does not light up. Power Jack 22.5V 2.67A 1. Check AC Adaptor. 2. Check OUTLET. 3.Check Charge B’D OUTLET Charge B’D J514 J1 MOTHER BOARD[...]

104 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE POWER IN P25 PJ501 PL501, PF501 PD1 PWR_VDDIN P25 VDD5 P23 F2, U23 Q22 +S5V Q21 VDD5S P23 P23 PU2 ADINP P26 P25 PD3, PD4, PL3 D/VMAIN VMAIN P29 PQ502 PQ503,PU10 +S3V_P P27 JO3 +S3V P29 PQ10 S1.8V P29 PQ504 +3V P29 JO4 +S1.8V P29 PU14,PU5 1.8V P28 PQ13 2.5V P29 JO5 +2.5V P29 +S12V PU10,[...]

105 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Symptom: Symptom: When the power button is presse d, nothing happens, no fan activi When the power button is presse d, nothing happens, no fan activi ty is heard and power indicator is not light up ty is heard and power indicator is not light up . . 8.1 NO POWER: D/VMAIN PF501 6.5A/32V[...]

106 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Symptom: Symptom: When the power button is presse d, nothing happens, no fan activi When the power button is presse d, nothing happens, no fan activi ty is heard and power indicator is not light up ty is heard and power indicator is not light up . 8.1 NO POWER: . No power Is the notebo[...]

107 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE Symptom: Symptom: When the power button is presse d, nothing happens, no fan activi When the power button is presse d, nothing happens, no fan activi ty is heard and power indicator is not light up ty is heard and power indicator is not light up . 8.1 NO POWER: . CONTINUE 2. Check the [...]

108 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.2 NO DISPLAY There is no display on both LCD and monitor NO DISPLAY Connect the I/O device & cables to the system one at a time to find out the faulty parts then replace and end. YES NO Reboot and display OK? YES Replace motherboard or into board-level Troubleshooting. NO Reboot [...]

109 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.2 NO DISPLAY ******System Clock Check ****** U15 Clock Generator ICS9248-102 R93 APICCLK 45 48 U24 SIS 630S U27 Super I/O PC97338VJG 46 R83 R131 R124 R91 9 17 25 X3 C161 4 5 CPUCLK 630PC LK CLK14_VGA USB_48MHZ 5 20 R125 21 R126 28 R86 29 R85 SDRAMCLK2 SDRAMCLK3 26 R135 2 630SD CLK IO[...]

110 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.2 NO DISPLAY ******Power Good & Re set System ****** +2.5V U10 MAX809 VCC RESET# GND U24 SIS- 630S U14 H8/ 3434F U503 CPU FC-PGA H8_PWRON_SIS PWR_ON CPU_PWR_ON PWR_ON R78 R79 +3V +5V U16 CPURST# 18 14 U31 LPC TO ISA 14 PCIRST# U27 Super I/O PC97338VJG RSTDRY 77 100 U505 PCMCIA/CA[...]

111 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCD. U24 SIS 630S U2 LVDS DS90C363MTD R[2~7]_301 FA6,FA 8,FA10 FA7,FA 9,FA11 RP31,RP33,RP24 RP32,RP26,RP36 VBHSYNC VBVSYNC VBBLANK# VGCLK L537 L536 L534 L540 22 23 25 26 TXCLKOUT+ TXCLKOUT- TXOUT0+ TXO[...]

112 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE VGA CONTR OLLER 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. Display OK? Remove all the I/O device & cable from motherboard except LCD panel or extended monitor. Display OK? Replace faul[...]

113 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.4 EXTERNAL MONITOR NO DISPLAY There is no display or pict ure abnormal on CRT monitor. U24 SIS 630S G D S G D S BLUE DDCK Q502 Q501 L516 L515 L514 L519 L512 L513 R2 R518 R516 3 15 C505 R114 R112 SH5 SH11 L518 J506 1 RED 2 GREEN +12V +3V R630 HSYNC 13 14 VSYNC R3 12 DDDA CRT MONITOR +[...]

114 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE VGA CONTR OLLER FAILURE 1. Confirm monitor is good and check the cable are connecte d properly. 2. Try another known good monitor. Display OK? Remove all the I/O device & cable from motherboard except monitor. Display OK? Replace faulty monitor. Connect the I/O device & cable t[...]

115 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROR Either on board or extend SDRAM is failure or system hangs up. SH8 SMDATA, SM CLK MDR[0~63] MAB#[0~14] DQMA#[0~7] CS#[0~ 3] SRASA#,SCASA# CSA#[2,3] CSA#[0,1] U508 74LVC244 CKE R588 8.2K +S3V CKE[0, 1] CKE[2, 4] ON BOARD 64MB SDRAM U18,U22,U25, U29 U19,U23 ,U26,U30[...]

116 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROR Either on board or extend SDRAM is failure or system hangs up. MEMORY TEST ERROR 1. Check if on board SDRAM chip s are no cold solder. 2. Check the extend SDRAM module is installed properly. ( J6 ) 3. Confirm the SDRAM socket is ok, no band pins. Test OK? YES NO T[...]

117 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.6 KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR Error message of keyboa rd failure is shown or any key doesn’t work. U14 H8/3434F KEYBOARD CONTROLLER KI[0~7] KO[0~15] IOW# IOR# IRQ1 SD[0:7] H8_K BCS# +3V RP520 U31 LPC TO ISA W83626F KBD_US/JP# X2 16MHz SW2 SW3 U507 74CBTD 3384 97 9[...]

118 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 show n or any key doesn’t work. KEYBOARD TEST ERROR Try another known good K/B or T/P (Internal or external). Test OK? Replace M/B or into board-level Troubleshooting YES Replace the f[...]

119 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERROR An error message is shown wh en reading data from CD-ROM drive. CD-ROM U24 SIS 630S SDCS[1,3]# SDIOW# SDD[0~15] SIORDY RP50, RP51 RP52, RP58 J512 Q508 SDA[0:2] RSDDACK# RSDIOR # RIRQ15 RSDDR EQ RDDS[0~ 15] RSDIOW RDAS[0:2] 25 22 24 28 29 27 CD_RST# SIORDY +5[...]

120 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERROR An error message is shown wh en reading data from CD-ROM drive. Replace faulty parts then end. 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 instal led proper ly( J512 ). Test [...]

121 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERROR U24 SIS 630S PDCS[1,3]# PDIOW# PDD[0~15] RP46, RP4 7 RP45, RP58 J516 Q25 Q24 +5V PDA[0~2] RPDDACK# RPDIOR # RIRQ14 RPDDR EQ RCS[1, 3]P# RDDP[0~ 15] RPDIOW # RDAP[0~2] 22 24 20 16 14 R212 Either an error message is shown , or the driver motor continues spinning[...]

122 7521 7521 Plus / N N/B MAINTENANCE Plus / 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. Replace mother BD or into board-level Troubleshooting. Board-level Troubleshooting f or hard drive t[...]

123 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERROR An error occurs when a USB I/O device is inst alled. J508 U24 SIS 630S SH6 R143 R142 R140 R141 C14 C25 B1 A1 B3 B2 A3 A2 B4 A4 GND1 GND2 GND3 GND4 L504 L511 USB_GND SH21 L2 F502 USB_B1 C507 L6 +5V R20 C506 USB_OC0# R19 F503 USB_A1 +5V R22 USB_OC1# R23 RP21 L12 U[...]

124 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERROR An error occurs when a USB I/O device is inst alled. USB TEST ERROR 1. Check if the USB device is instal led proper ly. 2. Confirm USB drive r is insta lled ok. Test OK? Re-test OK? Change M/B or go into board-level Troubleshooting. YES NO Correct It. YES NO Cha[...]

125 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. ASDOUT ASYNC U5 CS4299 CDROM_R CDROM_L C63 C73 R35 CDROM_RIGHT CDROM_ LEFT U24 SIS 630S ASDIN0 C75 L13 J509 L10 L505 L506 + C59 R42 R41 C66 C64 R55 L26 VA 21 20 18 19 5 8 10 +12V U4 ADP3301AR-5 C321 D2 + + + C48 [...]

126 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. U5 U5 CS4299 CS4299 CODEC CODEC 20 21 4 5 AC97_SDOUT AC97_SDIN0 AC97_SYNC 5 8 10 AC’97 CODEC LINK 36 AOUT_R R64 R61 R52 R49 C81 C80 AOUT_L 35 R33 R34 R31 R45 C62 C71 RHP IN RLINE IN LLINE IN LHP IN ROUT+ ROUT- [...]

127 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURE No sound from speaker after audio driver is installed. Check the following par ts for cold solder or one of the fo llowing parts on the motherboard m ay be defective,use an osc illoscope to check the following signal or replace the parts one at a time and test after [...]

128 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERROR An error occurs when a mouse or other I/O device is installed. COM1CTS# J507 U1 ADM3311 D/RXD D/DTR# U27 SUPER I/O PC97338VJG RS232_OFF# ISA_IRQ4 U24 SIS630S COM1RXD COM1DCD# COM1RI# PIN 1: DCD…… DATA CARRIER DETECT PIN 6: DSR….. DATA SET READY PIN 2: RD?[...]

129 7521 7521 Plus / N N/B MAINTENANCE Plus / 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 1. Check if the mouse or others I/O device are instal led ( J507 ) prope rly. (Inclu ding driver ) 2. Check if CMOS COM port setting correctly. Test OK? Re-test OK? Change M/B or go i[...]

130 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERROR When a print command is issued, pr inter prints nothing or garbage. D/STB# P_STB# P_D/AFD# P_D/INIT# P_D/SLI N# P_D/ACK# P_D/BUSY P_D/PE P_D/SLCT P_D/ERR# D/AFD# D/INIT# D/SLIN# D/ACK# D/BUSY D/PE D/SLCT D/ERR# U27 PC97338VJG SUPER I/O P_LPD[ 0:7] J505 FA1 FA2 [...]

131 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERROR When a print command is issued, pr inter prints nothing or garbage. PIO TEST ERROR 1. Check the PIO device is installed proper ly.( J505 ) 2. Confirm CMOS LPT port and extended mode setting pro perly. Test OK? Re-test OK? Replace M/B or go into board-level Trou[...]

132 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.13 PC-CARD SOCKET FAILURE An error occurs when a PC card device is installed. U24 SIS 630S U505 PCI1225PDV PC-CARD Controller AD[0:31] C/BE[0:3] PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME# REQ0# GNT0# CLKRUN# U13 TPS2206 VPPAOUT CARD_VCCA VPPBOUT CARD_VCCB POWER SWITCH MA[...]

133 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 8.13 PC-CARD SOCKET FAILURE An error occurs when a PC card device is installed. PC CARD TEST ERROR 1. Check if the PC CARD device is instal led proper ly. 2. Confirm Pc card dr iver is i nstalled ok. Test OK? Re-test OK? Change M/B or go into board-level Troubleshooting. YES NO Correct[...]

134 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-1 P a r t Nu m b e r De s c r ip tion Loca ti on( s ) 4420512000 01 A C ADP T A S S Y ; 19V/ 3. 16A , DELT A 5416670000 31 A K;1 - EN , BOX,7521 MT C C T O 5416670000 01 A K;EN , 7521 - U T IL IT Y ON LY 4419999000 47 BAT T A S SY OP T ION ; L I- ION , 7521 I D2C 44[...]

135 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-2 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 2720752227 01 CAP ;220 0P , 50 V , +/ - 20% ,0603, X7R, SM T C107 2720752213 02 CAP ;220 P , 50V ,5 % , 0603, N P O,SM T C 23, C31,P C 76, P C 77 2720752207 01 CAP ;22P ,5 0V , + - 10% , 0603, N P O,SM T C 108, C[...]

136 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-3 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 2726254704 01 CP ; 47P *4 ,8P , 50V , 10% ,1206, N P O, S MT C A501, CA 502, CA7, CA8, C 3456696000 62 CUS HION ; CP U - 1, RACE 2910062144 11 DIMM S OCK ET ; 144P , .8 MM ,A MP 35387 0, S M T J6 2881000320 13 DI[...]

137 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-4 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 3456696000 06 GA S KET ; IO- P S 2,RA CE 3456696000 13 GA S KET ; L AN , RA CE 3456696000 41 GA S KET ; L VDS,9X6X10, RACE 3456696000 43 GA S KET ; MIC , 5X5X19,RA CE 3456696000 42 GA S KET ; U S B , 10X15X0. 3,R[...]

138 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-5 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 2861002020 01 IC;T P A 020 2,A U DIO A MP , 2W, T S S OP , 24P U6 2863022160 01 IC;T P S2216, CARDBUS P W M C T RL , SS OP 30P U13 2845836010 01 IC;W 83601R, I2C T O GP I O, S S OP 20P U11 2845836260 01 IC;W 8362[...]

139 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-6 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 4126700000 05 P WA ; P WA - 7521,CHA RGER T RA N S B D M T C 4126700000 01 P WA ;P W A - 7521,H DD/FDD BD,T /U MT C 4126700000 04 P WA ; P WA - 7521,I QSB T RA N S BD,T /U MT C 4126700000 02 P WA ; P WA - 7521, M[...]

140 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-7 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 2710713611 01 RES ;360 , 1/1 6W, 1% , 0603, S MT R 56 2710714531 11 RES ;4. 53K, 1/ 16W , 1% , 0603, SM T P R25 2710134783 01 RES ;4. 7 , 1/4W , 5% ,12 06, S M T L31, R21, R24 2710024723 01 RES ;4. 7K , 1/ 10W ,5[...]

141 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-8 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 3711020303 01 SC R EW; M2L3, FLT ( + ) ,N I B /N L K 3711020303 03 S CR EW; M2L3, K- HEAD(+),N IW /N L K 3711020303 03 S CR EW; M2L3, K- HEAD(+),N IW /N L K 3711020303 03 S CR EW; M2L3, K- HEAD(+),N IW /N L K 371[...]

142 7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-9 P a r t Nu m b e r De s c r ip tion Loca ti on (s ) 2882023010 01 T RAN S;S I2301DS,P - M OS FET ,SOT -23 P Q17,P Q501, Q21, Q22 ,Q 5 2882023020 01 T RAN S;S I2302DS,N - MOS F ET , SOT - 23 P Q10, P Q13 2882044160 01 T RAN S;S i 4416D Y ,N - MOS FET ,. 028 OHM,S O[...]

[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D REV DESCRIPTION OF CHANGE ECR APPROVAL DATE DRAWN DESIGN CHECK ISSUES R00 09/29/2000 7521 pl us R02 R0B 02/01/2001 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 10[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 SLP# 330 10K BREAKPOINT SIGNAL BPM[1:0]# SMI# 410 4.7K INIT# 330 1K TDI TAP INPUT IGNNE# 330 4.7K THERMTRIP# 2 20 NO ========================= ============== PWRGOOD 3 30 NO TDO TAP OUTPUT =========================== ============== INTR 330 4.7K PRDY# GTL+ OUTPUT TRST# TAP INPUT C P U TCK 150(UP) 1K(DOWN) TCK TAP[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D (Default 01) (Default 01) MD[57..56]: CPU DLL ER[1..0] (Default 01) MD36: Enable Ext-PLink MD33: Enable Video Bridge MD[59..58]: SDRAM DLL ER[1..0] MD[55..54]: PCI DLL ER[1..0] 630S-1 MD39:VGA ECLK and MCLK mode SD411670000002 02 7521 plus C 3 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Si[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 630S-2 630S-5 SD411670000002 02 7521 plus C 4 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Size Document Number Rev Date: Sheet of P_REQ2# P_REQ1# P_REQ0# P_GNT2# C/BE3# P_GNT0# C/BE2# C/BE1# C/BE0# PIRQB# PIRQA# PIRQC# PIRQD# IRDY# FRAME# STOP# TRDY# DEVSEL# PAR PCIRST# 630PCLK PLOCK# PDDR[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 630S-3 SD411670000002 02 7521 plus C 5 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Size Document Number Rev Date: Sheet of VBBLANK# G5 R1 B5 R1_301 G0_301 B5_301 B4_301 B7_301 R0_301 G4_301 R6_301 G2_301 R7_301 G5_301 G6_301 B0_301 B1_301 R3_301 B6_301 R2_301 G3_301 B3_301 B2_301 G1 G7 G1_[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D Place Near to AC'97 CODEC No Need Near the SiS630 630S -4 Signal During After S1 S3 S4/S5 Function Name PCIRST# PCIRST# GPIO0 In In Defined Off Off GPIO0 GPIO1 In In Defined Off Off GPIO1 GPIO2 In In Defined Off Off GPIO2 GPIO3 In In Defined Off Off GPIO3 GPIO4 In In Defined O ff Off KBD_US/JP# G[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D Default mount R48 if TV funct ion required. Test only. Never mount even TV function required. SIS630S GPIO 8 SD411670000002 02 7521 plus C 7 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Size Document Number Rev Date: Sheet of XTA LI ADDR TV_LUMA XTAL O XTAL O TV_DAT ADDR TV_CRMA XTA LI TV_C[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D CLOCK SYNTHESIZER AND DRIVER 5:RTM540-630 (Realtek) Near Target Chip (2.5V) 3:PLL52C72-31 (Phase Link) 4:W83194R-630 (Winbond) PLACE THESE RESISTORS (5 OPTIONS) 1:ICS9248-102 (ICS) SELECT CPU VOLTAGE NEAR CLOCK GENERATOR 2:ICW207 (IC Works) 1 (FS2) (MHz) 0 14.318 37.59 0 37.59 0 (MHz) (FS3) (FS1) 0 1 [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 144 PIN SODIMM SOCKET CLOSE TO RECEIVER SD411670000002 02 7521 plus C 9 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of DQMA#0 DQMA#4 DQMA#5 MAB#0 MAB#3 MAB#1 MAB#4 MAB#2 MAB#5 SRASA# WEA# CSA#0 CSA#1 MAB#6 MAB#8 MAB#9 MAB10 DQMA#2 DQMA#3 MDR[0..63] MDR[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 2M X 16 BITS X 4 BANK X 4 = 64M BYTES SD411670000002 02 7521 plus C 10 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of MAB10 MAB13 MAB#12 MAB#11 CKE4 SRASA# SCASA# WEA# CSA#2 CKE4 CKE4 SRASA# SRASA# SCASA# SCASA# WEA# WEA# CSA#2 CSA#2 MAB#0 MAB#1 MAB#2 [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D FROM VGA CHIP (+5VS) SiS630S GPIO 9 SD411670000002 02 7521 plus C 11 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of LID_OPEN# TV_CRMA TV_LUMA PANEL_VDD PANEL_VDD AVGND CRTGND CRTGND +12V CRTGND +5V CRTGND +5V GND +3V GND GND GND GND GND GND GND GND GND[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D IDSEL:AD20 Slave address 00110001 SD411670000002 02 7521 plus C 12 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Size Document Number Rev Date: Sheet of EECS EESK EEDI QSB0# QSB2# QSB1# QSB3# QSB4# PJRX+ TPI+ TPI- PJTX - PJRX- PJT X+ VADJ_2_P VADJ_1_P AD8 AD0 AD24 AD25 AD30 AD14 AD12 AD16 EE[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SECONDARY IDE CONNECTOR fdd pull high PRIMARY IDE & FDD CONNECTOR pd diag terminating resistors should be place close to SiS630 (+5VS) (+5VS) Add via to GND per inch 10k pull dn 10k pull dn EMI 60 OHM (+5VS) SD411670000002 02 7521 plus C 13 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D MULTIFUNCTION PIN: SERIAL IRQ/PARALLEL PCI INTERRUPT: INDEX -- 92h CONTENTS -- 64H TI 1225 IDSEL :AD19 PCIREQ#/GNT# : 0 PCIINT# : A,B MFUNC0:INTA# ; PCI INTERRUPT SIGNAL MFUNC1:INTB# ; PCI INTERRUPT SIGNAL MFUNC2:ZV_STAT ; ZOOM VIDEO STATUS OUTPUT MFUNC3:IRQ AND OPTIONAL PCI ; SERIAL INTERRUPT STREAM [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D PCCARD SOCKET POWER SWITCH MATRIX SD411670000002 02 7521 plus C 15 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of CARD_VCCA ACA25 ACA22 ACA9 AIORD# ACD6 BCA3 BCA25 BCA12 BCA19 BOE# BCD13 BCD12 BCD4 ACA17 ACD4 CARD_VCCB BCD9 BCA1 VPPBOUT BRDY BCE2# BCD1[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D AGND 273000130006 (+3VS) AGND AGND SD411670000002 02 7521 plus C 16 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of LINE_IN/L LINE_IN/R CODEC_XIN CDROM_R CDROM_L CDROM_GND LINE_IN/L LINE_IN/R CODEC_XIN CDROM_R CDROM_L CDROM_GND VA +3V GND CAGND GND GND [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D (+5VS) SD411670000002 02 7521 plus C 17 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of AOUT_R AOUT_L DECT_HP#/OPT DEVICE_DECT# AMP_DOWN AMP_SHUTDOWN DECT_HP#/OPT SPK_OFF# AMP_DOWN AMP_SHUTDOWN DEVICE_DECT# GND_C DEVICE_DECT# +5V GND +3V +3V +5V +5V VA [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D SD411670000002 02 7521 plus C 18 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP Title Size Document Number Rev Date: Sheet of LFRAME# LPC2ISACLK PCIRST# LDRQ# SA1 SA0 SA2 SA3 SA5 SA4 SA7 SA6 SA9 SA8 SA11 SA10 SA14 SA13 SA12 SA15 SA17 SA16 SA18 SA19 SD0 SD2 SD1 SD4 SD3 SD5 SD7 SD6 SD9 SD8 SD12 SD10 [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 16 BIT ADDRESS DECODE CFG0=LOW (DEFAULT): CFG1=HIGH (10K PULL-HIGH): 11-BIT ADDRESS/COM2 SUPER I /O IRTX HP FIR MODULE HSDL-3600#007 (+3VS) RS232/SIO (+3VS) IRRXA SD411670000002 02 7521 plus C 19 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of COM1RTS# [...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D 0 1 1 0 1 1 MODE1 MODE2 MODE3 expanded mode with expanded mode with on-chip ROM enable on-chip ROM disable single-chip mode ================================== MD0 MD1 MODE DESCRIPTION RESET pulse width : min 10 Tcyc RESET setup time :min 300ns at least 20ms PS2 PORT PULL-HIGH H8/3434F-ZTAT HD64F3434TF[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D CLR CLK A B QA L H X L ^ QA H H H H H H L L L L L L X X X X X X ^ ^ QB QAn QAn QAn QB QC ... QH L ... L QC ... QH QBn...QGn QBn...QGn QBn...QGn USB CONNECTOR SD411670000002 02 7521 plus C 21 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of NUM_LOCK# AC_P[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D input pin pull high SYSTEM BIOS (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+3VS) (+5VS) (+5VS) (+3VS) (+3VS) modem card bus audio card bus audio Slav e Address 0011000 ** NEAR CPU (+3VS) (+3VS) (+3VS) (+3VS) SD411670000002 02 7521 plus C 22 30 Tuesday, May 08,[...]

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D FULL ON POS STR MECH OFF STD(SOFT OFF) VDD3 +5V +5VS +3V +3VS CPU_IO CPU_CORE O O O O X O O O O O O O O O O O O O X X X X X X X X X X X X X X X X O +12V O O O X X VDD5 O O O O X O O O O X +5V51 X / ADIN BAT / (NO ACIN & NO BATT) (ACIN OR BATTERY IN) SUSTAT1# SUSTAT2# SUSA# SUSB# SUSC# O O O O O O [...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 Charger board connector PREQ# PULL UP AT CPU SD411670000002 02 7521 plus C 24 30 Tuesday, May 08, 2001 MITAC INTERNATIONAL CORP. Title Size Document Number Rev Date: Sheet of ADEN# VDD5S VTT VCC_CMOS VCC_CMOS GND VDD5S_P +5V GND GND GND GND +3V +S3V VDD5 GND GND1 VDD5S R512 1K 0603 1 2 R510 47 0603 1 2 R509 1K 06[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 SD411670000002 02 7521 plus_ADIN P & DISCHARGE C 25 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of A2 A4 A1 A5 A3 PWR_VDDIN GND GND GND GND GND GND GND D/VMAIN GND VDD5S PC2 0.1U 50V 0603B 1 2 PC57 0.01U 50V 10% 0603B 1 2 PR13 1M 0603 1 2 PD3 EC31QS04 DC2010 A K PD4 EC31QS04 DC2010 A K[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 VADJ_2_P VADJ_1_P 0 0 0 0 1 1 1 16.60V 16.65V 16.70V 16.75V 1 SD411670000002 02 7521 pl us_CHARGER C 26 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of 1.25V L6 REF 2IN+ L2 L1 L4 L3 2IN+ L5 LI_OVP 1.25V LI_OVP NiMH#/Li GND GND GND GND GND VDD5S_P GND GND GND GND1 GND D/VMAIN GND GND +5V GND[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 SD411670000002 02 7521 plus_ S5V_S3V_S12V C 27 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of 3V_1 12V_1 FB5 5V_1 DH5 DH3 CSL3 CSL5 5V_2 CSH3 3V_2 FB3 DL3 DL5 CSH5 D/VMAIN_1 VL5 12V_2 GND +S5V_P +S3V_P GND +S12V GND GND GND GND GND D/VMAIN GND PR28 10K 0603 1 2 + PC513 330U 6.3V 20% 1 2 PL[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 SD411670000002 02 7521 plus _1.5V/1.8V C 28 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of FB1.5V SENSE1+ SW1.5 1.5V_2 INTVCC TG1.5. FB1.5V SENSE1- 1.8V_2 SENSE1- SW1.8 BG1.8 BG1.5. FB1.8V SENSE2- BST1.8 SENSE2+ INTVCC SENSE1+ TG1.8 BST1.5 1.8V GND D/VMAIN GND GND GND D/VMAIN GND GND 1.5V [...]

A A B B C C D D E E 1 1 2 2 3 3 4 4 SD411670000002 02 7521 plus _+5V_+3V_+12V_S1.8V_2.5V C 29 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of OD12 OD5 OD12 OD3 OD5 OD3 GND +S5V_P S1.8V +S3V_P +3V GND +S12V +S5V_P +12V +S12V +5V GND GND GND +S12V GND 1.8V 1.5V 2.5V +1.8V VTT +2.5V D/VMAIN VMAIN +S1.8V +5V 2.5V GND GND GND +S5V[...]

A A B B C C D D E E 4 4 3 3 2 2 1 1 411670000002 02 7521 plus_CPU PWR C 30 30 Tuesday, May 08, 2001 Title Size Document Number Rev Date: Sheet of DH D/VID0 D/VID2 D/VID1 DL CP1 CORE_1 D/VID1 D/VID2 D/VID3 D/VID0 D/VID3 GND GND GND D/VMAIN VCC_CORE VCC_CORE +S5V_P GND GND GND GND GND GND GND GND GND GND GND PC118 0.01U 50V 10% 0603B 1 2 PC121 0.01U [...]

                        7521P HDD/FDD BD DRAWN DESIGN CHECK ISSUES          ![...]

                  FDD LED SCROLL_LOCK LED NUM_LOCK LED HDD LED CAP_LOCK LED CDROM LED DRAWN DESIGN CHECK ISSUES R00 DATE ECR 02/15/2000 DESCRIPTION OF CHANGE REV 7521 7321 QSB0# KI 1 QSB1# KI 2 QSB2# KI 3 QSB3# KI 4 QSB4# KI 5 SW_GND KO 0 1.Base on RACE QSB trans bd r01. [...]

                  DRAWN DESIGN CHECK ISSUES R0A ECR DESCRIPTION OF CHANGE 05/26/2000 DATE R00 REV 1.Relayout base on R00 2.Correcting J1 shape library. 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 06/16/2[...]

                  DRAWN DESIGN CHECK ISSUES R00 DATE R0A ECR 05/26/2000 DESCRIPTION OF CHANGE REV 07/04/2000 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 [...]

                  DRAWN DESIGN CHECK ISSUES 08/15/2000 ECR DATE REV DESCRIPTION OF CHANGE 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 R01 1.Relayout base on R0A 09/07/2000 [...]

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.tw SERVICE MANUAL & TROUBLES HOOTING GUIDE FOR 7521 Plus/N SER[...]