Manuals / MiTAC / Computer Equipment / Laptop

MiTAC 7521 PLUS/N service manual Drawn Design Check Issues

Models: 7521 PLUS/N

1 180

Page 176


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FDD LED
FDD LED			1	/	'+	471
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SCROLL_LOCK LED
SCROLL_LOCK LED			1	/	',--.-,/+
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NUM_LOCK LED
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HDD LED
HDD LED			1	/	21+
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CDROM LED
CDROM LED			1	/ 21+

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REV	DESCRIPTION OF CHANGE	ECR	DATE
R00	1.Base on RACE QSB trans bd r01.		02/15/2000

7521	7321
QSB0#	KI1
QSB1#	KI2
QSB2#	KI3
QSB3#	KI4
QSB4#	KI5
SW_GND	KO0





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DRAWN DESIGN CHECK ISSUES




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Page 176

Image 176

MiTAC 7521 PLUS/N service manual Drawn Design Check Issues

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