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MiTAC 7521 PLUS/N Trouble Shooting, EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR

Models: 7521 PLUS/N

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7521Plus / N N/B MAINTENANCE

8.TROUBLE SHOOTING

8.1NO POWER

8.2NO DISPLAY

8.3VGA CONTROLLER FAILURE LCD NO DISPLAY

8.4EXTERNAL MONITOR NO DISPLAY

8.5MEMORY TEST ERROR

8.6KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR

8.7CD-ROM DRIVE TEST ERROR

8.8HARD DRIVE TEST ERROR

8.9USB PORT TEST ERROR

8.10AUDIO FAILURE

8.11SIO PORT TEST ERROR

8.12PIO PORT TEST ERROR

8.13PC-CARD SOCKET FAILURE

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MiTAC 7521 PLUS/N service manual Trouble Shooting, NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY

Contents

BY： Richard Wang SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFORTESTING TECHNOLOGY DEPARTMENT // TSSCTSSC 7521 Plus/NCONTENTS 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 1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP 7521Plus / N N/B MAINTENANCE1.2.2 CPU MODULE 1.2.3 SynthesizerSiS630S 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 MAINTENANCEIntegrated DMA Controller 7521Plus / N N/B MAINTENANCEAdvanced PCI H/W Audio & Modem Advanced Power Management Low Pin Count InterfaceIntegrated Keyboard Controller 7521Plus / N N/B MAINTENANCEIntegrated Interrupt Controller Three 8254 Compatible Programmable 16-bits countersI²C Bus/SMBus Series Interface 7521Plus / N N/B MAINTENANCENAND Tree for Ball Connectivity Testing 672-Balls BGA Package Universal Serial Bus Host Controller1.2.5 Super IO NS PC 97338VJG 7521Plus / N N/B MAINTENANCE1.2.6 PC CARD interface controller TI1225 7521Plus / N N/B MAINTENANCEMemory 7521Plus / N N/B MAINTENANCE1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS2206 1.2.8 Keyboard system H8 3434F universal keyboard controllerPWM timer 2 channels 7521Plus / N N/B MAINTENANCE16-bit free-running timer 8-bit timer 2 channelsFan control and LED indicator serial interface 100pin TQFP 7521Plus / N N/B MAINTENANCEPower-down modes Cover switch Battery charging control Smart Battery monitoring1.2.9 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 MAINTENANCESummary of Global Power States 7521Plus / N N/B MAINTENANCE1.2.10 POWER MANAGEMENT ACPI Power States2.Sleeping State S3 7521Plus / N N/B MAINTENANCESummary of Device Power Sates System States 1. Working S03.Hibernation S4 7521Plus / N N/B MAINTENANCE4.Soft Off State S5 Component Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5.Mechanical Off 2. Idle 7521Plus / N N/B MAINTENANCEPower State 1.Full Power APM Concept4.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 Suspend to DRAM 7521Plus / N N/B MAINTENANCEHDD & Video access Battery WarningBattery Low State 7521Plus / N N/B MAINTENANCECover Switch Battery Warning StateHard Disk Drive 1.5 Peripheral Components7521Plus / N N/B MAINTENANCE LCD PanelKeyboard 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 IO port 7521Plus / N N/B MAINTENANCELED Indicators CMOS BatterySerial Interface 7521Plus / N N/B MAINTENANCEPCMCIA Socket ‰ Rated power 0.6 W ‰ Static pressure 0.09 inch-H2O 7521Plus / N N/B MAINTENANCE‰ Dimension 25mmx25mmx10mm±0.5mm ‰ Operating temperature -10 - +70 degree C ‰ Weight 7g7521Plus / 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 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly 2 System View and Disassembly2.0 Tools introduction 7521Plus / N N/B MAINTENANCE2.1.1 Front View 2.1 System View7521Plus / N N/B MAINTENANCE 2 System View and Disassemblys RJ-45 Connector t VGA Port 7521Plus / N N/B MAINTENANCEn Battery Pack o CD-ROM/DVD-ROM Drive p IR Port n Power Connector o PS/2 Port2.1.6 Top-Open View 7521Plus / N N/B MAINTENANCEn CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack 2.1.5 Bottom View2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD Module 2.2 System Disassembly7521Plus / N N/B MAINTENANCE Modular Components NOTEBOOK LCD Assembly Components2.2.1 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 MAINTENANCEJ1 Inverter BD CONN J2 LCD panel LVDS connector 3. Definition & Location Of Connectors / Switches3.1 Mother Board-A 7521Plus / N N/B MAINTENANCESW3. CPU & SDRAM Frequency setting table 3.2 Mother Board Switch Table7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / SwitchesPJ501 Power jack AC adapter 3.3 Mother Board-B7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / SwitchesJ1 RJ-11 phone jack for internal modem J23 MDC jump wire connector 3.4 Daughter Board7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / SwitchesJ1Charger & Touch-Pad connector to M/B. PJ4Battery pack connector 3.5 Charger Board7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches7521Plus / N N/B MAINTENANCE 3.6 IQSB Board3.7 Easy Start Button Board Easy Start Button Boardside A Easy Start Button Boardside BU13 TPS2206 PCcard Power switch matrix 4. Definition & Location Of Major Components4.1 Main Board Side A 7521Plus / N N/B MAINTENANCEU502 PH163112 LAN Controller U503 Socket 370 CPU 4.2 Main Board SIDE B7521Plus / N N/B MAINTENANCE 4. Definition & Location Of Major ComponentsAlphabetical Signal Reference 5. Pin Descriptions Of Major Components5.1 Pentium III/Celeron FC-PGA2 CPU 7521Plus / N N/B MAINTENANCESignal Name 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal NameSignal Description 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal NamePWRGOOD Relationship at Power On 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference PWRGOOD Relationship at Power OnSignal Description 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal NameSignal Description 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal NamePower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCEPower 5. Pin Descriptions Of Major Components5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCEPower 5. Pin Descriptions Of Major Components5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower management Interface Power5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCEPower management Interface 5. Pin Descriptions Of Major ComponentsRTC Interface 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 MAINTENANCEPower andGroundSignals Legacy I/o and Miscellaneous Signals7521Plus / N N/B MAINTENANCE 6. System Block DiagramU2 SH5 PIO PORT 7. Maintenance Diagnostics7521Plus / N N/B MAINTENANCE 7.1 Introduction7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM SOFT BIOS CODE 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics SYSTEM SOFT BIOSOR P/N411904800001 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics PIO CONNECTOR8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR 8. TROUBLE SHOOTING8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROROUTLET 8.1 NO POWER7521Plus / N N/B MAINTENANCE 1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D+S5V 7521Plus / N N/B MAINTENANCE8.1 NO POWER POWER INPOWER IN 7521Plus / N N/B MAINTENANCE8.1 NO POWER SymptomNo power 7521Plus / N N/B MAINTENANCE8.1 NO POWER Symptom2. Check the power source from AC adapter. PJ501 7521Plus / N N/B MAINTENANCE8.1 NO POWER SymptomReboot and display OK? 8.2 NO DISPLAY7521Plus / N N/B MAINTENANCE 1. Check if power system is O.KU505SH14 TI1225 PCMCIA 7521Plus / N N/B MAINTENANCE8.2 NO DISPLAY System Clock Check8.2 NO DISPLAY 7521Plus / N N/B MAINTENANCEPower Good & Reset System 7521 Power ModuleThere is no display or picture abnormal on LCD SIS 630S8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 7521Plus / N N/B MAINTENANCEVGA CONTROLLER FAILURE 7521Plus / N N/B MAINTENANCE8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCDThere is no display or picture abnormal on CRT monitor U24 SIS 630S8.4 EXTERNAL MONITOR NO DISPLAY 7521Plus / N N/B MAINTENANCEVGA CONTROLLER FAILURE 7521Plus / N N/B MAINTENANCE8.4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitorClock Synthesizer 8.5 MEMORY TEST ERROR7521Plus / N N/B MAINTENANCE Either on board or extend SDRAM is failure or system hangs upCorrect it 7521Plus / N N/B MAINTENANCE8.5 MEMORY TEST ERROR Either on board or extend SDRAM is failure or system hangs upSIS 630S 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR Error message of keyboard failure is shown or any key doesn’t workReplace M/B or 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR Troubleshooting630S 8.7 CD-ROM DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE An error message is shown when reading data from CD-ROM driveReplace M/B or into board-level Troubleshooting 7521Plus / N N/B MAINTENANCE8.7 CD-ROM DRIVE TEST ERROR An error message is shown when reading data from CD-ROM drive+5VSHDD 8.8 HARD DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE 630SParts 7521Plus / N N/B MAINTENANCE8.8 HARD DRIVE TEST ERROR Replace mother BD or into board-level TroubleshootingU24 SIS 630S 8.9 USB PORT TEST ERROR7521Plus / N N/B MAINTENANCE An error occurs when a USB I/O device is installedBoard-level Troubleshooting for USB test error 7521Plus / N N/B MAINTENANCE8.9 USB PORT TEST ERROR An error occurs when a USB I/O device is installedNo sound from speaker after audio driver is installed 8.10 AUDIO FAILURESIS 630S 7521Plus / N N/B MAINTENANCEAUDIO OUT 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed 8.10 AUDIO FAILUREaudio test error 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed Troubleshooting forSUPER I/O 8.11 SIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE An error occurs when a mouse or other I/O device is installedBoard-level Troubleshooting for SIO test error 7521Plus / N N/B MAINTENANCE8.11 SIO PORT TEST ERROR An error occurs when a mouse or other I/O device is installedLO OPBACK CONNECTOR FOR PIO TEST 8.12 PIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE When a print command is issued, printer prints nothing or garbageBoard-level Troubleshooting for PIO test error 7521Plus / N N/B MAINTENANCE8.12 PIO PORT TEST ERROR When a print command is issued, printer prints nothing or garbageAD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME# 8.13 PC-CARD SOCKET FAILURE7521Plus / N N/B MAINTENANCE An error occurs when a PC card device is installedBoard-level Troubleshooting for PC CARD test error 7521Plus / N N/B MAINTENANCEAn error occurs when a PC card device is installed Change M/B or go into board-level TroubleshootingDescription 9. SPARE PARTS LIST-17521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-27521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-37521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-47521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-57521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-67521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-77521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-87521Plus / N N/B MAINTENANCE Part NumberDescription 9. SPARE PARTS LIST-97521Plus / N N/B MAINTENANCE Part NumberPage DESIGN CHECK ISSUES7521 plus R02 DRAWNCELERON PPGA 370-PIN SOCKET C P U630S-1 630S-5 VSS30 630S-2Page VSSA VSSB VSSC VSSD 630S-4mount even Default mount R48 if TV function requiredTest only NeverCLOCK 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 SERIAL IRQ/PARALLEL PCI INTERRUPT CONTENTS -- 64HIDSEL AD19 MULTIFUNCTION PINPCCARD SOCKET POWER SWITCH MATRIXAVSS1 AVSS2 DVSS1 DVSS2RLINE IN GND2 VCC3GND0 GND1RS232/SIO SUPER I/OHP FIR MODULE HSDL-3600#007 AVSS VCC1 VCC2AVCC VCCB VSS1 VSS2 VSS3 VSS4USB CONNECTOR Slave Address SYSTEM BIOSRESET# PREQ# PULL UP AT CPU Charger board connector7521 plusADINP & DISCHARGE 16.70V ABCDE16.60V 16.65V7521 plus S5VS3VS12V SENSE2+ 7521 plus 1.5V/1.8VSENSE1+ SENSE17521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR DESIGN ISSUES7521P HDD/FDD BD DRAWNDRAWN DESIGN CHECK ISSUES CHECK ISSUESDRAWN DESIGN9424 DRAWN DESIGN CHECK ISSUES1+60 545540-= -4$+1,511 DRAWN DESIGN CHECK ISSUES=904= Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR75217521Plulus/Ns/N Sponsoring Editor Shoestring Tsai Author Richard.Wang