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MiTAC 7521 PLUS/N service manual No Power, 7521Plus / N N/B MAINTENANCE, Outlet

Models: 7521 PLUS/N

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Page 104

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7521Plus / N N/B MAINTENANCE

8.1 NO POWER:

When the power button is pressed, nothing happens ,power indicator does not light up.

1.Check AC Adaptor.

2.Check OUTLET. 3.Check Charge B’D

22.5V 2.67A

OUTLET

Power Jack

MOTHER BOARD

J514

Charge B’D

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Page 104

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MiTAC 7521 PLUS/N No Power, 7521Plus / N N/B MAINTENANCE, Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D, Outlet

Contents

SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC7521 Plus/N BY： Richard Wang7521Plus / N N/B MAINTENANCE CONTENTS11. 7521 Plus/N Schematics 7521Plus / N N/B MAINTENANCECONTENTS 7521Plus / N N/B MAINTENANCE 1. Hardware Engineering Specification1.1 Introduction 7521Plus / N N/B MAINTENANCE 1.2 Hardware System1.2.1 System parts 7521Plus / N N/B MAINTENANCE 1.2.2 CPU MODULE1.2.3 Synthesizer 1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP7521Plus / N N/B MAINTENANCE SiS630S Features7521Plus / N N/B MAINTENANCE Integrated DRAM ControllerVirtual PCI-to-PCI Bridge 7521Plus / N N/B MAINTENANCEFast PCI IDE Master/Slave Controller 7521Plus / N N/B MAINTENANCE Supports High Quality Dithering Supports Bump Mapping7521Plus / N N/B MAINTENANCE Built-In 64x64x2 Bit-Mapped Hardware Cursor7521Plus / N N/B MAINTENANCE Built-in Reference Voltage Generator and Monitor Sense Circuit7521Plus / N N/B MAINTENANCE Advanced PCI H/W Audio & Modem Advanced Power ManagementLow Pin Count Interface Integrated DMA Controller7521Plus / N N/B MAINTENANCE Integrated Interrupt ControllerThree 8254 Compatible Programmable 16-bits counters Integrated Keyboard Controller7521Plus / N N/B MAINTENANCE NAND Tree for Ball Connectivity Testing 672-Balls BGA PackageUniversal Serial Bus Host Controller I²C Bus/SMBus Series Interface7521Plus / N N/B MAINTENANCE 1.2.5 Super IO NS PC 97338VJG7521Plus / N N/B MAINTENANCE 1.2.6 PC CARD interface controller TI12257521Plus / N N/B MAINTENANCE 1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS22061.2.8 Keyboard system H8 3434F universal keyboard controller Memory7521Plus / N N/B MAINTENANCE 16-bit free-running timer8-bit timer 2 channels PWM timer 2 channels7521Plus / N N/B MAINTENANCE Power-down modesCover switch Battery charging control Smart Battery monitoring Fan control and LED indicator serial interface 100pin TQFP1.2.9.1 System BIOS and Software Features Overview 7521Plus / N N/B MAINTENANCE1.2.9 System BIOS 7521Plus / N N/B MAINTENANCE 1.2.9.2 BIOS Setup Feature Introduction7521Plus / N N/B MAINTENANCE 1.2.10 POWER MANAGEMENTACPI Power States Summary of Global Power States7521Plus / N N/B MAINTENANCE Summary of Device Power SatesSystem States 1. Working S0 2.Sleeping State S34.Soft Off State S5 7521Plus / N N/B MAINTENANCE3.Hibernation S4 5.Mechanical Off 7521Plus / N N/B MAINTENANCEComponent Level Power Management Matrix 7521Plus / N N/B MAINTENANCE Power State 1.Full PowerAPM Concept 2. Idle7521Plus / N N/B MAINTENANCE 4.Suspend5. Off 7521Plus / N N/B MAINTENANCEComponent Level Power Management Matrix 7521Plus / N N/B MAINTENANCE 1.2.11 Memory System7521Plus / N N/B MAINTENANCE 1.2.12 Interface7521Plus / N N/B MAINTENANCE 1.2.13 Audio System AC’97 CODEC CS42997521Plus / N N/B MAINTENANCE 1.2.14 IR MODULE HSDL-3600#0077521Plus / N N/B MAINTENANCE 7521Plus / N N/B MAINTENANCE SiS900 FeaturesSupports PC97, PC98, and Net PC requirements - Green PC compatible 7521Plus / N N/B MAINTENANCEAdditional features 1.2.16 CH7005C Digital PC to TV Encoder 7521Plus / N N/B MAINTENANCECH7005 Features 1.3.1 Hot Key Function 1.3.2 Easy Start Button function 1.3 Special Feature Function7521Plus / N N/B MAINTENANCE 1.3.4 LED Indicators 7521Plus / N N/B MAINTENANCE1.3.3 Flash ROM BIOS 1.3.5 COM port assignment 1.4 SMM and System BIOS7521Plus / N N/B MAINTENANCE 7521Plus / N N/B MAINTENANCE HDD & Video accessBattery Warning Suspend to DRAM7521Plus / N N/B MAINTENANCE Cover SwitchBattery Warning State Battery Low State1.5 Peripheral Components 7521Plus / N N/B MAINTENANCELCD Panel Hard Disk DriveFloppy Disk Drive 7521Plus / N N/B MAINTENANCEKeyboard 24X CD-ROM Drive 7521Plus / N N/B MAINTENANCETouch Pad CD-R/RW drive 7521Plus / N N/B MAINTENANCEDVD-ROM drive 7521Plus / N N/B MAINTENANCE LED IndicatorsCMOS Battery IO portPCMCIA Socket 7521Plus / N N/B MAINTENANCESerial Interface 7521Plus / N N/B MAINTENANCE ‰ Dimension 25mmx25mmx10mm±0.5mm‰ Operating temperature -10 - +70 degree C ‰ Weight 7g ‰ Rated power 0.6 W ‰ Static pressure 0.09 inch-H2OGPI DEFINITIONS 1.6 Appendix 1 GPIO definitions7521Plus / N N/B MAINTENANCE Note 1. LCD ID 7521Plus / N N/B MAINTENANCENote 3. CPU & SDRAM Frequency setting table 2 System View and Disassembly 2.0 Tools introduction7521Plus / N N/B MAINTENANCE 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly2.1 System View 7521Plus / N N/B MAINTENANCE2 System View and Disassembly 2.1.1 Front View7521Plus / N N/B MAINTENANCE n Battery Pack o CD-ROM/DVD-ROM Drive p IR Portn Power Connector o PS/2 Port s RJ-45 Connector t VGA Port7521Plus / N N/B MAINTENANCE n CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack2.1.5 Bottom View 2.1.6 Top-Open View2.2 System Disassembly 7521Plus / N N/B MAINTENANCEModular Components NOTEBOOK LCD Assembly Components 2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD ModuleReassembly 7521Plus / N N/B MAINTENANCE2.2.1 Battery Pack Disassembly 7521Plus / N N/B MAINTENANCE 2.2.2 CPU Disassembly7521Plus / N N/B MAINTENANCE 3. Replace the CPU compartment cover and secure with two screws7521Plus / N N/B MAINTENANCE 2.2.3 Modem Card Disassembly7521Plus / N N/B MAINTENANCE 3. Replace the compartment cover and secure with one screw7521Plus / N N/B MAINTENANCE 2.2.4 FDD/HDD Module Disassembly7521Plus / N N/B MAINTENANCE 3. To take the hard disk drive apart, remove two screws of the hard disk. Then lift the hard disk up and unplug the connector to remove it. figure7521Plus / N N/B MAINTENANCE 2.2.5 CD-ROM Drive Disassembly7521Plus / N N/B MAINTENANCE 6. Hold the CD-ROM drive and slide it outward carefully. figure7521Plus / N N/B MAINTENANCE 1. Open the top cover7521Plus / N N/B MAINTENANCE 1. Remove the keyboard to access the SO-DIMM sockets. See section 2.2.6 Disassembly7521Plus / N N/B MAINTENANCE 2.2.8 LCD Assembly Disassembly3. Replace the two hinge covers 4. Replace the Easy Start panel 7521Plus / N N/B MAINTENANCE2. Reconnect the LCD cable connectors to the system board 7521Plus / N N/B MAINTENANCE 1. Remove the LCD assembly. See section 2.2.8 Disassembly7521Plus / N N/B MAINTENANCE 1. Fit the inverter board back into place and secure with two screws7521Plus / N N/B MAINTENANCE 2.2.11 System Board Disassembly7521Plus / N N/B MAINTENANCE 7. Lift up the speaker assembly and disconnect the cable. figure7521Plus / N N/B MAINTENANCE 8. Remove four screws to take the recharge board apart. figure7521Plus / N N/B MAINTENANCE 6. Replace the base unit frame and secure with twelve screws7521Plus / N N/B MAINTENANCE 1. Remove the system board. See section 2.2.11 Disassembly3. Definition & Location Of Connectors / Switches 3.1 Mother Board-A7521Plus / N N/B MAINTENANCE J1 Inverter BD CONN J2 LCD panel LVDS connector3.2 Mother Board Switch Table 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches SW3. CPU & SDRAM Frequency setting table3.3 Mother Board-B 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches PJ501 Power jack AC adapter3.4 Daughter Board 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector3.5 Charger Board 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connector3.6 IQSB Board 3.7 Easy Start Button Board Easy Start Button Boardside AEasy Start Button Boardside B 7521Plus / N N/B MAINTENANCE4. Definition & Location Of Major Components 4.1 Main Board Side A7521Plus / N N/B MAINTENANCE U13 TPS2206 PCcard Power switch matrix4.2 Main Board SIDE B 7521Plus / N N/B MAINTENANCE4. Definition & Location Of Major Components U502 PH163112 LAN Controller U503 Socket 370 CPU5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU7521Plus / N N/B MAINTENANCE Alphabetical Signal Reference7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferenceSignal Name Signal Name7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferenceSignal Name Signal Description7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferencePWRGOOD Relationship at Power On PWRGOOD Relationship at Power On7521Plus / N N/B MAINTENANCE PWRGOOD Relationship at Power OnSignal Name Signal Description7521Plus / N N/B MAINTENANCE PWRGOOD Relationship at Power OnSignal Name Signal Description5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCEPower Power7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power management InterfacePower 5. Pin Descriptions Of Major Components7521Plus / N N/B MAINTENANCE Power management Interface5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset RTC Interface7521Plus / N N/B MAINTENANCE Power andGroundSignalsLegacy I/o and Miscellaneous Signals PowerU2 SH5 6. System Block Diagram7521Plus / N N/B MAINTENANCE 7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCE7.1 Introduction PIO PORTSYSTEM SOFT BIOS 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCE 7. Maintenance DiagnosticsSYSTEM SOFT BIOS CODE7521Plus / N N/B MAINTENANCE 7. Maintenance DiagnosticsPIO CONNECTOR OR P/N4119048000018. TROUBLE SHOOTING 8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR8.1 NO POWER 7521Plus / N N/B MAINTENANCE1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D OUTLET7521Plus / N N/B MAINTENANCE 8.1 NO POWERPOWER IN +S5V7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom POWER IN7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom No power7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom 2. Check the power source from AC adapter. PJ5018.2 NO DISPLAY 7521Plus / N N/B MAINTENANCE1. Check if power system is O.K Reboot and display OK?7521Plus / N N/B MAINTENANCE 8.2 NO DISPLAYSystem Clock Check U505SH14 TI1225 PCMCIA7521Plus / N N/B MAINTENANCE Power Good & Reset System7521 Power Module 8.2 NO DISPLAYSIS 630S 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on LCD7521Plus / N N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAYThere is no display or picture abnormal on LCD VGA CONTROLLER FAILUREU24 SIS 630S 8.4 EXTERNAL MONITOR NO DISPLAY7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on CRT monitor7521Plus / N N/B MAINTENANCE 8.4 EXTERNAL MONITOR NO DISPLAYThere is no display or picture abnormal on CRT monitor VGA CONTROLLER FAILURE8.5 MEMORY TEST ERROR 7521Plus / N N/B MAINTENANCEEither on board or extend SDRAM is failure or system hangs up Clock Synthesizer7521Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROREither on board or extend SDRAM is failure or system hangs up Correct it7521Plus / N N/B MAINTENANCE 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERRORError message of keyboard failure is shown or any key doesn’t work SIS 630S7521Plus / N N/B MAINTENANCE 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERRORTroubleshooting Replace M/B or8.7 CD-ROM DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCEAn error message is shown when reading data from CD-ROM drive 630S7521Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERRORAn error message is shown when reading data from CD-ROM drive Replace M/B or into board-level Troubleshooting8.8 HARD DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCE630S +5VSHDD7521Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERRORReplace mother BD or into board-level Troubleshooting Parts8.9 USB PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a USB I/O device is installed U24 SIS 630S7521Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERRORAn error occurs when a USB I/O device is installed Board-level Troubleshooting for USB test error8.10 AUDIO FAILURE SIS 630S7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installed7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installed8.10 AUDIO FAILURE AUDIO OUT7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installedTroubleshooting for audio test error8.11 SIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a mouse or other I/O device is installed SUPER I/O7521Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERRORAn error occurs when a mouse or other I/O device is installed Board-level Troubleshooting for SIO test error8.12 PIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEWhen a print command is issued, printer prints nothing or garbage LO OPBACK CONNECTOR FOR PIO TEST7521Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERRORWhen a print command is issued, printer prints nothing or garbage Board-level Troubleshooting for PIO test error8.13 PC-CARD SOCKET FAILURE 7521Plus / N N/B MAINTENANCEAn error occurs when a PC card device is installed AD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME#7521Plus / N N/B MAINTENANCE An error occurs when a PC card device is installedChange M/B or go into board-level Troubleshooting Board-level Troubleshooting for PC CARD test error9. SPARE PARTS LIST-1 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-2 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-3 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-4 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-5 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-6 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-7 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-8 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-9 7521Plus / N N/B MAINTENANCEPart Number DescriptionPage ISSUES 7521 plus R02DRAWN DESIGN CHECKC P U CELERON PPGA 370-PIN SOCKET630S-1 630S-2 630S-5 VSS30Page 630S-4 VSSA VSSB VSSC VSSDDefault mount R48 if TV function required Test onlyNever mount evenCLOCK SYNTHESIZER AND DRIVER 144 PIN SODIMM SOCKET CLOSE TO RECEIVER2M X 16 BITS X 4 BANK X 4 = 64M BYTES GND1 GND200110001 IDSELAD20Slave address 0603B PRIMARY IDE & FDD CONNECTORSECONDARY IDE CONNECTOR CONTENTS -- 64H IDSEL AD19MULTIFUNCTION PIN SERIAL IRQ/PARALLEL PCI INTERRUPTPOWER SWITCH MATRIX PCCARD SOCKETDVSS1 DVSS2 AVSS1 AVSS2RLINE IN VCC3 GND0GND1 GND2HP FIR MODULE HSDL-3600#007 SUPER I/ORS232/SIO VCC1 VCC2 AVCC VCCBVSS1 VSS2 VSS3 VSS4 AVSSUSB CONNECTOR SYSTEM BIOS Slave AddressRESET# Charger board connector PREQ# PULL UP AT CPU7521 plusADINP & DISCHARGE ABCDE 16.60V16.65V 16.70V7521 plus S5VS3VS12V 7521 plus 1.5V/1.8V SENSE1+SENSE1 SENSE2+7521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR ISSUES 7521P HDD/FDD BDDRAWN DESIGNDRAWN DESIGN CHECK ISSUES ISSUES DRAWNDESIGN CHECKDRAWN DESIGN CHECK ISSUES 1+6054554 9424=904= DRAWN DESIGN CHECK ISSUES0-= -4$+1,511 SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR 75217521Plulus/Ns/NSponsoring Editor Shoestring Tsai Author Richard.Wang Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP