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MiTAC 7521 PLUS/N 7521Plus / N N/B MAINTENANCE, No Power, Symptom, D/Vmain, Power In, H8/3434F

Models: 7521 PLUS/N

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Page 106

Symptom:

7521Plus / N N/B MAINTENANCE

8.1 NO POWER:

Symptom:

When the power button is pressed, nothing happens, no fan activity is heard and power indicatordicator isis notnot lightlight upup..

PU2

3

8

PF501

SI4835DY

7

ADINP

PL501

2

6

PD3

PJ501

120Z/100M

6.5A/32VDC

PR15

1

S

4

D

5

PR9

PL3

D/VMAIN

POWER IN

G

EC31QS04

PC2

PC509

PD501

470K

4.7K

120Z/100M

POWER BUTTON

0.1U

0.1U

PR14

SW2

RLZ24D

D

PQ5

G120K

PD4

POWERBTN#

PD1

PWR_VDDIN

EC10QS041M

2N7002

S

PR13

EC31QS04

R575

C588

1M

LEARNING

PD2

EC10QS041M

U14

D

VDD5

ADEN#_P

H8/3434F

F2

8

6

Q22

PR16

PQ12

IN

5VTAP

G

S

D

2

1

S

D

+S5V

226K

2N7002

D

R199

SENSE

OUT

7

F/B

ERR-

5

X C247

G

38

3

SHUTDN

GND

4

R195

G

3

3

S

G

S

47

VDD5_SW 0

U32

10U

100K

PQ6

BAT_V

FROM H8

LP2951-02BM

Q23

3

VDD5_SW#

2

1

2

DTC144WK VDD5S_P

RP7

1

3

DTC144WK

2

D/VMAIN

PR13

PR7

2

1

1

PR19

10K

100K

1.25V

+

BATT_ALARM

715K

Q509

-

PR18

PQ8

PU2B

100K

PC18

PR23

0.1U

33K

BATTERY IN

PJ4

	PF3	PL1		J1	J514		4	PR21
	6.5A/32VDC	120Z/100M			BATT	8		100K
	6	120Z/100M	BATT			8	1
	6		BATT			7	1
		PL2				6	2
	PC6	PL2				5	3
	PC6	120Z/100M		PR2			PU9
	0.1U			PR2	BAT_V
	0.1U			301K				BAT_V
		PC1		301K			SI4435DY	BAT_V
		PC1
		0.01U	PC5	PR1
			0.1U	PR1
			0.1U	100K
			50V	100K
	CHARGE B’D		50V
	CHARGE B’D

105

Image 106

MiTAC 7521 PLUS/N 7521Plus / N N/B MAINTENANCE, No Power, Symptom, D/Vmain, Power In, H8/3434F, Battery In, 1.25V

Contents

7521 Plus/N SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFORTESTING TECHNOLOGY DEPARTMENT // TSSCTSSC BY： Richard Wang7521Plus / N N/B MAINTENANCE CONTENTSCONTENTS 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 1.2.3 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 ControllerFast PCI IDE Master/Slave Controller 7521Plus / N N/B MAINTENANCEVirtual 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 TQFP1.2.9 System BIOS 7521Plus / N N/B MAINTENANCE1.2.9.1 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 S33.Hibernation S4 7521Plus / N N/B MAINTENANCE4.Soft Off State S5 Component Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5.Mechanical Off APM Concept 7521Plus / N N/B MAINTENANCEPower State 1.Full Power 2. Idle7521Plus / N N/B MAINTENANCE 4.SuspendComponent Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5. 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 FeaturesAdditional 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 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 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 CMOS Battery 7521Plus / N N/B MAINTENANCELED Indicators IO portSerial Interface 7521Plus / N N/B MAINTENANCEPCMCIA 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-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 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 Module2.2.1 Battery Pack Disassembly 7521Plus / N N/B MAINTENANCEReassembly 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 Disassembly2. 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 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 Power7521Plus / N N/B MAINTENANCE 6. System Block DiagramU2 SH5 7.1 Introduction 7. Maintenance Diagnostics7521Plus / N N/B MAINTENANCE PIO PORT7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM 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 GND2Slave address IDSELAD2000110001 SECONDARY IDE CONNECTOR PRIMARY IDE & FDD CONNECTOR0603B MULTIFUNCTION PIN CONTENTS -- 64HIDSEL AD19 SERIAL IRQ/PARALLEL PCI INTERRUPTPOWER SWITCH MATRIX PCCARD SOCKETDVSS1 DVSS2 AVSS1 AVSS2RLINE IN GND1 VCC3GND0 GND2RS232/SIO SUPER I/OHP 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 94240-= -4$+1,511 DRAWN DESIGN CHECK ISSUES=904= Sponsoring Editor Shoestring Tsai Author Richard.Wang SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR75217521Plulus/Ns/N Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP