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MiTAC 7521 PLUS/N service manual Service Manual & Troubleshootinggg Guideguideguide Forforfor

Models: 7521 PLUS/N

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SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR

7521 Plus/N

BY： Richard Wang

TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC

AUG. 2001

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MiTAC 7521 PLUS/N service manual Service Manual & Troubleshootinggg Guideguideguide Forforfor, Plus/N, BY： Richard Wang

Contents

TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR7521 Plus/N BY： Richard WangCONTENTS 7521Plus / N N/B MAINTENANCECONTENTS 7521Plus / N N/B MAINTENANCE11. 7521 Plus/N Schematics 1.1 Introduction 1. Hardware Engineering Specification7521Plus / N N/B MAINTENANCE 1.2.1 System parts 1.2 Hardware System7521Plus / N N/B MAINTENANCE 1.2.2 CPU MODULE 7521Plus / N N/B MAINTENANCE1.2.3 Synthesizer 1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGPSiS630S Features 7521Plus / N N/B MAINTENANCEIntegrated DRAM Controller 7521Plus / N N/B MAINTENANCEFast PCI IDE Master/Slave Controller 7521Plus / N N/B MAINTENANCEVirtual PCI-to-PCI Bridge Supports High Quality Dithering Supports Bump Mapping 7521Plus / N N/B MAINTENANCEBuilt-In 64x64x2 Bit-Mapped Hardware Cursor 7521Plus / N N/B MAINTENANCEBuilt-in Reference Voltage Generator and Monitor Sense Circuit 7521Plus / N N/B MAINTENANCEAdvanced PCI H/W Audio & Modem Advanced Power Management 7521Plus / N N/B MAINTENANCELow Pin Count Interface Integrated DMA ControllerIntegrated Interrupt Controller 7521Plus / N N/B MAINTENANCEThree 8254 Compatible Programmable 16-bits counters Integrated Keyboard ControllerNAND Tree for Ball Connectivity Testing 672-Balls BGA Package 7521Plus / N N/B MAINTENANCEUniversal Serial Bus Host Controller I²C Bus/SMBus Series Interface1.2.5 Super IO NS PC 97338VJG 7521Plus / N N/B MAINTENANCE1.2.6 PC CARD interface controller TI1225 7521Plus / N N/B MAINTENANCE1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS2206 7521Plus / N N/B MAINTENANCE1.2.8 Keyboard system H8 3434F universal keyboard controller Memory16-bit free-running timer 7521Plus / N N/B MAINTENANCE8-bit timer 2 channels PWM timer 2 channelsPower-down modes 7521Plus / N N/B MAINTENANCECover switch Battery charging control Smart Battery monitoring Fan control and LED indicator serial interface 100pin TQFP1.2.9 System BIOS 7521Plus / N N/B MAINTENANCE1.2.9.1 System BIOS and Software Features Overview 1.2.9.2 BIOS Setup Feature Introduction 7521Plus / N N/B MAINTENANCE1.2.10 POWER MANAGEMENT 7521Plus / N N/B MAINTENANCEACPI Power States Summary of Global Power StatesSummary of Device Power Sates 7521Plus / N N/B MAINTENANCESystem States 1. Working S0 2.Sleeping State S33.Hibernation S4 7521Plus / N N/B MAINTENANCE4.Soft Off State S5 Component Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5.Mechanical Off Power State 1.Full Power 7521Plus / N N/B MAINTENANCEAPM Concept 2. Idle4.Suspend 7521Plus / N N/B MAINTENANCEComponent Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5. Off 1.2.11 Memory System 7521Plus / N N/B MAINTENANCE1.2.12 Interface 7521Plus / N N/B MAINTENANCE1.2.13 Audio System AC’97 CODEC CS4299 7521Plus / N N/B MAINTENANCE1.2.14 IR MODULE HSDL-3600#007 7521Plus / N N/B MAINTENANCE7521Plus / N N/B MAINTENANCE SiS900 Features 7521Plus / N N/B MAINTENANCEAdditional features 7521Plus / N N/B MAINTENANCESupports PC97, PC98, and Net PC requirements - Green PC compatible CH7005 Features 7521Plus / N N/B MAINTENANCE1.2.16 CH7005C Digital PC to TV Encoder 7521Plus / N N/B MAINTENANCE 1.3 Special Feature Function1.3.1 Hot Key Function 1.3.2 Easy Start Button function 1.3.3 Flash ROM BIOS 7521Plus / N N/B MAINTENANCE1.3.4 LED Indicators 7521Plus / N N/B MAINTENANCE 1.4 SMM and System BIOS1.3.5 COM port assignment HDD & Video access 7521Plus / N N/B MAINTENANCEBattery Warning Suspend to DRAMCover Switch 7521Plus / N N/B MAINTENANCEBattery Warning State Battery Low State7521Plus / N N/B MAINTENANCE 1.5 Peripheral ComponentsLCD Panel Hard Disk DriveKeyboard 7521Plus / N N/B MAINTENANCEFloppy Disk Drive Touch Pad 7521Plus / N N/B MAINTENANCE24X CD-ROM Drive DVD-ROM drive 7521Plus / N N/B MAINTENANCECD-R/RW drive LED Indicators 7521Plus / N N/B MAINTENANCECMOS Battery IO portSerial Interface 7521Plus / N N/B MAINTENANCEPCMCIA Socket ‰ Dimension 25mmx25mmx10mm±0.5mm 7521Plus / N N/B MAINTENANCE‰ Operating temperature -10 - +70 degree C ‰ Weight 7g ‰ Rated power 0.6 W ‰ Static pressure 0.09 inch-H2O7521Plus / N N/B MAINTENANCE 1.6 Appendix 1 GPIO definitionsGPI DEFINITIONS Note 3. CPU & SDRAM Frequency setting table 7521Plus / N N/B MAINTENANCENote 1. LCD ID 2.0 Tools introduction 2 System View and Disassembly7521Plus / N N/B MAINTENANCE 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly7521Plus / N N/B MAINTENANCE 2.1 System View2 System View and Disassembly 2.1.1 Front Viewn Battery Pack o CD-ROM/DVD-ROM Drive p IR Port 7521Plus / N N/B MAINTENANCEn Power Connector o PS/2 Port s RJ-45 Connector t VGA Portn CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack 7521Plus / N N/B MAINTENANCE2.1.5 Bottom View 2.1.6 Top-Open View7521Plus / N N/B MAINTENANCE 2.2 System DisassemblyModular Components NOTEBOOK LCD Assembly Components 2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD Module2.2.1 Battery Pack Disassembly 7521Plus / N N/B MAINTENANCEReassembly 2.2.2 CPU Disassembly 7521Plus / N N/B MAINTENANCE3. Replace the CPU compartment cover and secure with two screws 7521Plus / N N/B MAINTENANCE2.2.3 Modem Card Disassembly 7521Plus / N N/B MAINTENANCE3. Replace the compartment cover and secure with one screw 7521Plus / N N/B MAINTENANCE2.2.4 FDD/HDD Module Disassembly 7521Plus / N N/B MAINTENANCE3. 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 7521Plus / N N/B MAINTENANCE2.2.5 CD-ROM Drive Disassembly 7521Plus / N N/B MAINTENANCE6. Hold the CD-ROM drive and slide it outward carefully. figure 7521Plus / N N/B MAINTENANCE1. Open the top cover 7521Plus / N N/B MAINTENANCE1. Remove the keyboard to access the SO-DIMM sockets. See section 2.2.6 Disassembly 7521Plus / N N/B MAINTENANCE2.2.8 LCD Assembly Disassembly 7521Plus / N N/B MAINTENANCE2. Reconnect the LCD cable connectors to the system board 7521Plus / N N/B MAINTENANCE3. Replace the two hinge covers 4. Replace the Easy Start panel 1. Remove the LCD assembly. See section 2.2.8 Disassembly 7521Plus / N N/B MAINTENANCE1. Fit the inverter board back into place and secure with two screws 7521Plus / N N/B MAINTENANCE2.2.11 System Board Disassembly 7521Plus / N N/B MAINTENANCE7. Lift up the speaker assembly and disconnect the cable. figure 7521Plus / N N/B MAINTENANCE8. Remove four screws to take the recharge board apart. figure 7521Plus / N N/B MAINTENANCE6. Replace the base unit frame and secure with twelve screws 7521Plus / N N/B MAINTENANCE1. Remove the system board. See section 2.2.11 Disassembly 7521Plus / N N/B MAINTENANCE3.1 Mother Board-A 3. Definition & Location Of Connectors / Switches7521Plus / N N/B MAINTENANCE J1 Inverter BD CONN J2 LCD panel LVDS connector7521Plus / N N/B MAINTENANCE 3.2 Mother Board Switch Table3. Definition & Location Of Connectors / Switches SW3. CPU & SDRAM Frequency setting table7521Plus / N N/B MAINTENANCE 3.3 Mother Board-B3. Definition & Location Of Connectors / Switches PJ501 Power jack AC adapter7521Plus / N N/B MAINTENANCE 3.4 Daughter Board3. Definition & Location Of Connectors / Switches J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector7521Plus / N N/B MAINTENANCE 3.5 Charger Board3. Definition & Location Of Connectors / Switches J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connector3.7 Easy Start Button Board Easy Start Button Boardside A 3.6 IQSB BoardEasy Start Button Boardside B 7521Plus / N N/B MAINTENANCE4.1 Main Board Side A 4. Definition & Location Of Major Components7521Plus / N N/B MAINTENANCE U13 TPS2206 PCcard Power switch matrix7521Plus / N N/B MAINTENANCE 4.2 Main Board SIDE B4. Definition & Location Of Major Components U502 PH163112 LAN Controller U503 Socket 370 CPU5.1 Pentium III/Celeron FC-PGA2 CPU 5. Pin Descriptions Of Major Components7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferenceAlphabetical Signal Reference 7521Plus / N N/B MAINTENANCESignal Name Signal NameAlphabetical Signal Reference 7521Plus / N N/B MAINTENANCESignal Name Signal DescriptionAlphabetical Signal Reference 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On PWRGOOD Relationship at Power OnPWRGOOD Relationship at Power On 7521Plus / N N/B MAINTENANCESignal Name Signal DescriptionPWRGOOD Relationship at Power On 7521Plus / N N/B MAINTENANCESignal Name Signal Description7521Plus / N N/B MAINTENANCE 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single ChipsetPower PowerPower 7521Plus / N N/B MAINTENANCE5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single ChipsetPower 7521Plus / N N/B MAINTENANCE5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single ChipsetPower management Interface 7521Plus / N N/B MAINTENANCEPower 5. Pin Descriptions Of Major ComponentsPower management Interface 7521Plus / N N/B MAINTENANCE5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCE5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset RTC InterfacePower andGroundSignals 7521Plus / N N/B MAINTENANCELegacy I/o and Miscellaneous Signals Power7521Plus / N N/B MAINTENANCE 6. System Block DiagramU2 SH5 7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics7.1 Introduction PIO PORT7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM SOFT BIOS 7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM SOFT BIOS CODE7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCEPIO CONNECTOR OR P/N4119048000018.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 8. TROUBLE SHOOTING8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR7521Plus / N N/B MAINTENANCE 8.1 NO POWER1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D OUTLET8.1 NO POWER 7521Plus / N N/B MAINTENANCEPOWER IN +S5V8.1 NO POWER 7521Plus / N N/B MAINTENANCESymptom POWER IN8.1 NO POWER 7521Plus / N N/B MAINTENANCESymptom No power8.1 NO POWER 7521Plus / N N/B MAINTENANCESymptom 2. Check the power source from AC adapter. PJ5017521Plus / N N/B MAINTENANCE 8.2 NO DISPLAY1. Check if power system is O.K Reboot and display OK?8.2 NO DISPLAY 7521Plus / N N/B MAINTENANCESystem Clock Check U505SH14 TI1225 PCMCIAPower Good & Reset System 7521Plus / N N/B MAINTENANCE7521 Power Module 8.2 NO DISPLAY8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY SIS 630S7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on LCD8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 7521Plus / N N/B MAINTENANCEThere is no display or picture abnormal on LCD VGA CONTROLLER FAILURE8.4 EXTERNAL MONITOR NO DISPLAY U24 SIS 630S7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on CRT monitor8.4 EXTERNAL MONITOR NO DISPLAY 7521Plus / N N/B MAINTENANCEThere is no display or picture abnormal on CRT monitor VGA CONTROLLER FAILURE7521Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROREither on board or extend SDRAM is failure or system hangs up Clock Synthesizer8.5 MEMORY TEST ERROR 7521Plus / N N/B MAINTENANCEEither on board or extend SDRAM is failure or system hangs up Correct it8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR 7521Plus / N N/B MAINTENANCEError message of keyboard failure is shown or any key doesn’t work SIS 630S8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR 7521Plus / N N/B MAINTENANCETroubleshooting Replace M/B or7521Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERRORAn error message is shown when reading data from CD-ROM drive 630S8.7 CD-ROM DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCEAn error message is shown when reading data from CD-ROM drive Replace M/B or into board-level Troubleshooting7521Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERROR630S +5VSHDD8.8 HARD DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCEReplace mother BD or into board-level Troubleshooting Parts7521Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERRORAn error occurs when a USB I/O device is installed U24 SIS 630S8.9 USB PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a USB I/O device is installed Board-level Troubleshooting for USB test errorSIS 630S 8.10 AUDIO FAILURE7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installedNo sound from speaker after audio driver is installed 7521Plus / N N/B MAINTENANCE8.10 AUDIO FAILURE AUDIO OUTNo sound from speaker after audio driver is installed 7521Plus / N N/B MAINTENANCETroubleshooting for audio test error7521Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERRORAn error occurs when a mouse or other I/O device is installed SUPER I/O8.11 SIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a mouse or other I/O device is installed Board-level Troubleshooting for SIO test error7521Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERRORWhen a print command is issued, printer prints nothing or garbage LO OPBACK CONNECTOR FOR PIO TEST8.12 PIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEWhen a print command is issued, printer prints nothing or garbage Board-level Troubleshooting for PIO test error7521Plus / N N/B MAINTENANCE 8.13 PC-CARD SOCKET FAILUREAn error occurs when a PC card device is installed AD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME#An error occurs when a PC card device is installed 7521Plus / N N/B MAINTENANCEChange M/B or go into board-level Troubleshooting Board-level Troubleshooting for PC CARD test error7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-1Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-2Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-3Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-4Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-5Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-6Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-7Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-8Part Number Description7521Plus / N N/B MAINTENANCE 9. SPARE PARTS LIST-9Part Number DescriptionPage 7521 plus R02 ISSUESDRAWN DESIGN CHECKCELERON PPGA 370-PIN SOCKET C P U630S-1 630S-5 VSS30 630S-2Page VSSA VSSB VSSC VSSD 630S-4Test only Default mount R48 if TV function requiredNever mount evenCLOCK SYNTHESIZER AND DRIVER CLOSE TO RECEIVER 144 PIN SODIMM SOCKET2M X 16 BITS X 4 BANK X 4 = 64M BYTES GND2 GND1Slave address IDSELAD2000110001 SECONDARY IDE CONNECTOR PRIMARY IDE & FDD CONNECTOR0603B IDSEL AD19 CONTENTS -- 64HMULTIFUNCTION PIN SERIAL IRQ/PARALLEL PCI INTERRUPTPCCARD SOCKET POWER SWITCH MATRIXAVSS1 AVSS2 DVSS1 DVSS2RLINE IN GND0 VCC3GND1 GND2RS232/SIO SUPER I/OHP FIR MODULE HSDL-3600#007 AVCC VCCB VCC1 VCC2VSS1 VSS2 VSS3 VSS4 AVSSUSB CONNECTOR Slave Address SYSTEM BIOSRESET# PREQ# PULL UP AT CPU Charger board connector7521 plusADINP & DISCHARGE 16.60V ABCDE16.65V 16.70V7521 plus S5VS3VS12V SENSE1+ 7521 plus 1.5V/1.8VSENSE1 SENSE2+7521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR 7521P HDD/FDD BD ISSUESDRAWN DESIGNDRAWN DESIGN CHECK ISSUES DRAWN ISSUESDESIGN CHECK1+60 DRAWN DESIGN CHECK ISSUES54554 94240-= -4$+1,511 DRAWN DESIGN CHECK ISSUES=904= 75217521Plulus/Ns/N SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFORSponsoring Editor Shoestring Tsai Author Richard.Wang Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP