Manuals / MiTAC / Computer Equipment / Laptop

MiTAC 7521 PLUS/N U24 SIS 630S, External Monitor No Display, 7521Plus / N N/B MAINTENANCE, J506

Models: 7521 PLUS/N

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Page 114

Image 114

7521Plus / N N/B MAINTENANCE

8.4 EXTERNAL MONITOR NO DISPLAY

There is no display or picture abnormal on CRT monitor.

SH5

U24

SIS 630S

RED

GREEN

BLUE

+3V

HSYNC

VSYNC

DDDA

DDCK

+3V

CRT_IN# R516

+12V

R630

G Q502

S D

Q501 G

S D

R518

C505

L518

L516

L515

R114 L514

R112 L519

L512

L513

SH11

J506

CRT MONITOR

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Image 114

MiTAC 7521 PLUS/N U24 SIS 630S, External Monitor No Display, 7521Plus / N N/B MAINTENANCE, J506, Crt Monitor, SH11

Contents

7521 Plus/N SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFORTESTING TECHNOLOGY DEPARTMENT // TSSCTSSC BY： Richard Wang7521Plus / N N/B MAINTENANCE CONTENTS7521Plus / N N/B MAINTENANCE CONTENTS11. 7521 Plus/N Schematics 1. Hardware Engineering Specification 1.1 Introduction7521Plus / N N/B MAINTENANCE 1.2 Hardware System 1.2.1 System parts7521Plus / N N/B MAINTENANCE 1.2.3 Synthesizer 7521Plus / N N/B MAINTENANCE1.2.2 CPU MODULE 1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP7521Plus / N N/B MAINTENANCE SiS630S Features7521Plus / N N/B MAINTENANCE Integrated DRAM Controller7521Plus / N N/B MAINTENANCE Fast PCI IDE Master/Slave ControllerVirtual PCI-to-PCI Bridge 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 CircuitLow Pin Count Interface 7521Plus / N N/B MAINTENANCEAdvanced PCI H/W Audio & Modem Advanced Power Management Integrated DMA ControllerThree 8254 Compatible Programmable 16-bits counters 7521Plus / N N/B MAINTENANCEIntegrated Interrupt Controller Integrated Keyboard ControllerUniversal Serial Bus Host Controller 7521Plus / N N/B MAINTENANCENAND Tree for Ball Connectivity Testing 672-Balls BGA Package 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 TI12251.2.8 Keyboard system H8 3434F universal keyboard controller 7521Plus / N N/B MAINTENANCE1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS2206 Memory8-bit timer 2 channels 7521Plus / N N/B MAINTENANCE16-bit free-running timer PWM timer 2 channelsCover switch Battery charging control Smart Battery monitoring 7521Plus / N N/B MAINTENANCEPower-down modes Fan control and LED indicator serial interface 100pin TQFP7521Plus / N N/B MAINTENANCE 1.2.9 System BIOS1.2.9.1 System BIOS and Software Features Overview 7521Plus / N N/B MAINTENANCE 1.2.9.2 BIOS Setup Feature IntroductionACPI Power States 7521Plus / N N/B MAINTENANCE1.2.10 POWER MANAGEMENT Summary of Global Power StatesSystem States 1. Working S0 7521Plus / N N/B MAINTENANCESummary of Device Power Sates 2.Sleeping State S37521Plus / N N/B MAINTENANCE 3.Hibernation S44.Soft Off State S5 7521Plus / N N/B MAINTENANCE Component Level Power Management Matrix5.Mechanical Off APM Concept 7521Plus / N N/B MAINTENANCEPower State 1.Full Power 2. Idle7521Plus / N N/B MAINTENANCE 4.Suspend7521Plus / N N/B MAINTENANCE Component Level Power Management Matrix5. Off 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 Features7521Plus / N N/B MAINTENANCE Additional featuresSupports PC97, PC98, and Net PC requirements - Green PC compatible 7521Plus / N N/B MAINTENANCE CH7005 Features1.2.16 CH7005C Digital PC to TV Encoder 1.3 Special Feature Function 7521Plus / N N/B MAINTENANCE1.3.1 Hot Key Function 1.3.2 Easy Start Button function 7521Plus / N N/B MAINTENANCE 1.3.3 Flash ROM BIOS1.3.4 LED Indicators 1.4 SMM and System BIOS 7521Plus / N N/B MAINTENANCE1.3.5 COM port assignment Battery Warning 7521Plus / N N/B MAINTENANCEHDD & Video access Suspend to DRAMBattery Warning State 7521Plus / N N/B MAINTENANCECover Switch Battery Low StateLCD Panel 1.5 Peripheral Components7521Plus / N N/B MAINTENANCE Hard Disk Drive7521Plus / N N/B MAINTENANCE KeyboardFloppy Disk Drive 7521Plus / N N/B MAINTENANCE Touch Pad24X CD-ROM Drive 7521Plus / N N/B MAINTENANCE DVD-ROM driveCD-R/RW drive CMOS Battery 7521Plus / N N/B MAINTENANCELED Indicators IO port7521Plus / N N/B MAINTENANCE Serial InterfacePCMCIA Socket ‰ Operating temperature -10 - +70 degree C ‰ Weight 7g 7521Plus / N N/B MAINTENANCE‰ Dimension 25mmx25mmx10mm±0.5mm ‰ Rated power 0.6 W ‰ Static pressure 0.09 inch-H2O1.6 Appendix 1 GPIO definitions 7521Plus / N N/B MAINTENANCEGPI DEFINITIONS 7521Plus / N N/B MAINTENANCE Note 3. CPU & SDRAM Frequency setting tableNote 1. LCD ID 7521Plus / N N/B MAINTENANCE 2 System View and Disassembly2.0 Tools introduction 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly2 System View and Disassembly 2.1 System View7521Plus / N N/B MAINTENANCE 2.1.1 Front Viewn Power Connector o PS/2 Port 7521Plus / N N/B MAINTENANCEn Battery Pack o CD-ROM/DVD-ROM Drive p IR Port s RJ-45 Connector t VGA Port2.1.5 Bottom View 7521Plus / N N/B MAINTENANCEn CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack 2.1.6 Top-Open ViewModular Components NOTEBOOK LCD Assembly Components 2.2 System Disassembly7521Plus / N N/B MAINTENANCE 2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD Module7521Plus / N N/B MAINTENANCE 2.2.1 Battery Pack DisassemblyReassembly 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 Disassembly7521Plus / N N/B MAINTENANCE 2. Reconnect the LCD cable connectors to the system board3. Replace the two hinge covers 4. Replace the Easy Start panel 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 Disassembly7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches3.1 Mother Board-A J1 Inverter BD CONN J2 LCD panel LVDS connector3. Definition & Location Of Connectors / Switches 3.2 Mother Board Switch Table7521Plus / N N/B MAINTENANCE SW3. CPU & SDRAM Frequency setting table3. Definition & Location Of Connectors / Switches 3.3 Mother Board-B7521Plus / N N/B MAINTENANCE PJ501 Power jack AC adapter3. Definition & Location Of Connectors / Switches 3.4 Daughter Board7521Plus / N N/B MAINTENANCE J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector3. Definition & Location Of Connectors / Switches 3.5 Charger Board7521Plus / N N/B MAINTENANCE J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connectorEasy Start Button Boardside B 3.6 IQSB Board3.7 Easy Start Button Board Easy Start Button Boardside A 7521Plus / N N/B MAINTENANCE7521Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components4.1 Main Board Side A U13 TPS2206 PCcard Power switch matrix4. Definition & Location Of Major Components 4.2 Main Board SIDE B7521Plus / N N/B MAINTENANCE U502 PH163112 LAN Controller U503 Socket 370 CPU7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal ReferenceSignal Name 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal NameSignal Name 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal DescriptionPWRGOOD Relationship at Power On 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference PWRGOOD Relationship at Power OnSignal Name 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal DescriptionSignal Name 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal DescriptionPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single ChipsetPower 7521Plus / N N/B MAINTENANCEPower management Interface 5. Pin Descriptions Of Major Components5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower management Interface 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCE5. Pin Descriptions Of Major Components RTC InterfaceLegacy I/o and Miscellaneous Signals 7521Plus / N N/B MAINTENANCEPower andGroundSignals Power6. System Block Diagram 7521Plus / N N/B MAINTENANCEU2 SH5 7.1 Introduction 7. Maintenance Diagnostics7521Plus / N N/B MAINTENANCE PIO PORT7521Plus / N N/B MAINTENANCE 7. Maintenance DiagnosticsSYSTEM SOFT BIOS SYSTEM SOFT BIOS 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics CODEPIO CONNECTOR 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics OR P/N4119048000018.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8. TROUBLE SHOOTING8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D 8.1 NO POWER7521Plus / N N/B MAINTENANCE OUTLETPOWER IN 7521Plus / N N/B MAINTENANCE8.1 NO POWER +S5VSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER POWER INSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER No powerSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER 2. Check the power source from AC adapter. PJ5011. Check if power system is O.K 8.2 NO DISPLAY7521Plus / N N/B MAINTENANCE Reboot and display OK?System Clock Check 7521Plus / N N/B MAINTENANCE8.2 NO DISPLAY U505SH14 TI1225 PCMCIA7521 Power Module 7521Plus / N N/B MAINTENANCEPower Good & Reset System 8.2 NO DISPLAY7521Plus / N N/B MAINTENANCE SIS 630S8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCDThere is no display or picture abnormal on LCD 7521Plus / N N/B MAINTENANCE8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY VGA CONTROLLER FAILURE7521Plus / N N/B MAINTENANCE U24 SIS 630S8.4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitorThere is no display or picture abnormal on CRT monitor 7521Plus / N N/B MAINTENANCE8.4 EXTERNAL MONITOR NO DISPLAY VGA CONTROLLER FAILUREEither on board or extend SDRAM is failure or system hangs up 8.5 MEMORY TEST ERROR7521Plus / N N/B MAINTENANCE Clock SynthesizerEither on board or extend SDRAM is failure or system hangs up 7521Plus / N N/B MAINTENANCE8.5 MEMORY TEST ERROR Correct itError message of keyboard failure is shown or any key doesn’t work 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR SIS 630STroubleshooting 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR Replace M/B orAn error message is shown when reading data from CD-ROM drive 8.7 CD-ROM DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE 630SAn error message is shown when reading data from CD-ROM drive 7521Plus / N N/B MAINTENANCE8.7 CD-ROM DRIVE TEST ERROR Replace M/B or into board-level Troubleshooting630S 8.8 HARD DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE +5VSHDDReplace mother BD or into board-level Troubleshooting 7521Plus / N N/B MAINTENANCE8.8 HARD DRIVE TEST ERROR PartsAn error occurs when a USB I/O device is installed 8.9 USB PORT TEST ERROR7521Plus / N N/B MAINTENANCE U24 SIS 630SAn error occurs when a USB I/O device is installed 7521Plus / N N/B MAINTENANCE8.9 USB PORT TEST ERROR Board-level Troubleshooting for USB test error7521Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURESIS 630S No sound from speaker after audio driver is installed8.10 AUDIO FAILURE 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed AUDIO OUTTroubleshooting for 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed audio test errorAn error occurs when a mouse or other I/O device is installed 8.11 SIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE SUPER I/OAn error occurs when a mouse or other I/O device is installed 7521Plus / N N/B MAINTENANCE8.11 SIO PORT TEST ERROR Board-level Troubleshooting for SIO test errorWhen a print command is issued, printer prints nothing or garbage 8.12 PIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE LO OPBACK CONNECTOR FOR PIO TESTWhen a print command is issued, printer prints nothing or garbage 7521Plus / N N/B MAINTENANCE8.12 PIO PORT TEST ERROR Board-level Troubleshooting for PIO test errorAn error occurs when a PC card device is installed 8.13 PC-CARD SOCKET FAILURE7521Plus / N N/B MAINTENANCE AD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME#Change M/B or go into board-level Troubleshooting 7521Plus / N N/B MAINTENANCEAn error occurs when a PC card device is installed Board-level Troubleshooting for PC CARD test errorPart Number 9. SPARE PARTS LIST-17521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-27521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-37521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-47521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-57521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-67521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-77521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-87521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-97521Plus / N N/B MAINTENANCE DescriptionPage DRAWN ISSUES7521 plus R02 DESIGN CHECKC P U CELERON PPGA 370-PIN SOCKET630S-1 630S-2 630S-5 VSS30Page 630S-4 VSSA VSSB VSSC VSSDNever Default mount R48 if TV function requiredTest only mount evenCLOCK SYNTHESIZER AND DRIVER 144 PIN SODIMM SOCKET CLOSE TO RECEIVER2M X 16 BITS X 4 BANK X 4 = 64M BYTES GND1 GND2IDSELAD20 Slave address00110001 PRIMARY IDE & FDD CONNECTOR SECONDARY IDE CONNECTOR0603B MULTIFUNCTION PIN CONTENTS -- 64HIDSEL AD19 SERIAL IRQ/PARALLEL PCI INTERRUPTPOWER SWITCH MATRIX PCCARD SOCKETDVSS1 DVSS2 AVSS1 AVSS2RLINE IN GND1 VCC3GND0 GND2SUPER I/O RS232/SIOHP FIR MODULE HSDL-3600#007 VSS1 VSS2 VSS3 VSS4 VCC1 VCC2AVCC VCCB AVSSUSB CONNECTOR SYSTEM BIOS Slave AddressRESET# Charger board connector PREQ# PULL UP AT CPU7521 plusADINP & DISCHARGE 16.65V ABCDE16.60V 16.70V7521 plus S5VS3VS12V SENSE1 7521 plus 1.5V/1.8VSENSE1+ SENSE2+7521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR DRAWN ISSUES7521P HDD/FDD BD DESIGNDRAWN DESIGN CHECK ISSUES DESIGN ISSUESDRAWN CHECK54554 DRAWN DESIGN CHECK ISSUES1+60 9424DRAWN DESIGN CHECK ISSUES 0-= -4$+1,511=904= Sponsoring Editor Shoestring Tsai Author Richard.Wang SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR75217521Plulus/Ns/N Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP